CN108289445A - Aclonifen contains purposes of the Herbicidal combination of aclonifen in root crop plant with some - Google Patents

Aclonifen contains purposes of the Herbicidal combination of aclonifen in root crop plant with some Download PDF

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CN108289445A
CN108289445A CN201680059507.1A CN201680059507A CN108289445A CN 108289445 A CN108289445 A CN 108289445A CN 201680059507 A CN201680059507 A CN 201680059507A CN 108289445 A CN108289445 A CN 108289445A
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grass
plant
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belong
aclonifen
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CN108289445B (en
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M·埃尔舍瑞夫
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Bayer CropScience AG
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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N33/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic nitrogen compounds
    • A01N33/16—Biocides, pest repellants or attractants, or plant growth regulators containing organic nitrogen compounds containing nitrogen-to-oxygen bonds
    • A01N33/18—Nitro compounds
    • A01N33/20—Nitro compounds containing oxygen or sulfur attached to the carbon skeleton containing the nitro group
    • A01N33/22—Nitro compounds containing oxygen or sulfur attached to the carbon skeleton containing the nitro group having at least one oxygen or sulfur atom and at least one nitro group directly attached to the same aromatic ring system

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  • Life Sciences & Earth Sciences (AREA)
  • Agronomy & Crop Science (AREA)
  • Pest Control & Pesticides (AREA)
  • Plant Pathology (AREA)
  • Health & Medical Sciences (AREA)
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  • General Health & Medical Sciences (AREA)
  • Wood Science & Technology (AREA)
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Abstract

The purposes of the composition of specific Herbicidal combination the invention mainly relates to aclonifen, containing aclonifen or the specific Herbicidal combination comprising aclonifen or containing aclonifen, for preventing the noxious plant in root tuber (tuberous root) crop plants, preferably cassava.The composition of specific Herbicidal combination the invention further relates to aclonifen, containing aclonifen or the specific Herbicidal combination comprising aclonifen or containing aclonifen, as the plant growth regulator of root crop plant, preferably as the purposes of the plant growth regulator of cassava.In addition, the present invention relates in root crop plant prevent noxious plant correlation method, and in root crop plant coordinate plant growth correlation method.

Description

Aclonifen contains the Herbicidal combination of aclonifen in root crop plant with some Purposes
Specific Herbicidal combination the invention mainly relates to aclonifen, containing aclonifen comprising aclonifen or contains The purposes of the composition of the specific Herbicidal combination of aclonifen, be used to prevent root tuber (tuberous root) crop plants, It is preferred that the noxious plant in cassava.Specific Herbicidal combination the invention further relates to aclonifen, containing aclonifen includes benzene The composition of careless ether or specific Herbicidal combination containing aclonifen, plant growth regulator as root crop plant Purposes, preferably as the purposes of the plant growth regulator of cassava.Prevent in root crop plant in addition, the present invention relates to one kind Control the corresponding method of noxious plant and a kind of corresponding method of the coordinate plant growth in root crop plant.
Cassava (Manihot esculenta Crantz) is several hundred million populations --- it is mainly distributed on Africa, in Asia and drawing Also there is a degree of distribution in fourth America --- carbohydrate main source.In Africa, cassava production is generally relatively low, this It is largely due to the influence of weed competition or weed growth that is not preventing or not preventing fully.Uproot weeding still It is the practices well of cassava peasant.
The meeting note for the 11st ISRTC-AB that 4 to 8 October in 2010 holds in Democratic Republic of the Congo Kinshasa Record the 269-275 pages (Proceedings of the 11th ISRTC-AB, Kinshasa, Democratic Republic Congo, 4-8October 2010, pages 269-275) commercially available herbicide is reported for control of weeds in cassava Assessment.Processing therein includes using herbicide before seedling stage, such as chloroacetanilide (chloroacetanilide), prometryn (prometryn) or S- isopropyl methoxalamines (S-metolachlor).
In #17 crops recommendation (the Crop recommendation#17of the of the Ministry of Agriculture of Barbados Ministry of Agriculture of Barbados) in be referred to following herbicide for control of weeds in cassava：Hundred Careless withered (paraquat) (optionally being mixed with diquat dibromide (diquat)), glyphosate (glyphosate), sulphosate (sulfosate), Pendimethalin (pendimethalin), isopropyl methoxalamine (metolachlor), fluazifop-P-butyl (fluazifop-butyl), sethoxydim (sethoxydim) or propaquizafop (propaquizafop).
Cassava field after CN102428919A teaches one kind using mesotrione (mesotrion) as the seedling of active component Between herbicide.
CN103392724A suggestions use a kind of ternary herbicidal composition, and as cassava field weedicide, the composition contains Active component halosulfuronmethyl (halosulfuron), Oxyfluorfen (oxyfluorfen) and be selected from butachlor (butachlor), the amide herbicide of propisochlor (propisochlor) and isopropyl methoxalamine (metolachlor).
GB 1,028,976 discloses a kind of plant (such as cassava, potato or Chinese yam) of the processing with storage organ Method comprising in the specific time range before harvesting, spray plant using substituted benzoic acid herbicides.Wherein, preferably Herbicide such as (being optionally further substituted with) dichlorobenzoic acid, trichlorobenzoic acid or tetrachloro-benzoic acid.
African crop science magazine 1994,519-530 (African Crop Science Journal 1994,519- 530) weeds and its prevention in cassava are reported.Wherein, following herbicide is mainly tested：Metobromuron (metobromuron), fluometuron (fluometuron), prometryn (prometryn) (are optionally tied with ametryn (ametryne) Close), terbutryn (terbutryn), paraquat and diuron (diuron).
Planata Daninha, 2010,28 (4), 807-816 is described to the weeds in cassava, using different weedings Agent.Two kinds of cassavas for wherein especially reporting the Parana state (Paran á, Brazil) for being grown in Brazil plant kind, remove Careless agent --- such as diuron, metribuzin (metribuzin), isoxaflutole (isoxaflutole), atrazine (atrazine), ametryn --- and the influence of several conjugates comprising the herbicide.
It is hitherto known for preventing noxious plant in root crop plant or undesired plant in its application Weeding crop protection agents (herbicide) have the shortcomings that：(a) for some specific noxious plants, they live without weeding Property or activity of weeding it is insufficient, (b) can with herbicide prevent noxious plant spectrum it is not wide enough, and/or (c) herbicide to root tuber The selectivity of crop plants and too low with the compatibility of root crop plant；To produce undesirable damage to root crop Harmful and/or undesirable underproduction.
In general, currently used for the herbicide in root crop plant, activity of weeding (above aspect (a) and (b)) and/or selectivity/compatibility (above aspect (c)) still has much room for improvement.
For these reasons, it is still desirable to which alternative, high activity herbicide or Herbicidal combinations are used for selective application To prevent noxious plant or the undesired plant in root crop plant.
Unexpectedly, it has been found that aclonifen, the specific Herbicidal combination containing aclonifen include aclonifen Or the composition of the specific Herbicidal combination containing aclonifen shows required activity of weeding, and can selectively prevent Noxious plant in root crop plant or undesired plant.
The purposes of composition the invention mainly relates to aclonifen or comprising (i) aclonifen
For preventing the noxious plant in root crop plant,
And/or
The plant growth regulator being used as in root crop plant.
Conjugate the invention further relates to the conjugate of a variety of herbicides (combinations of herbicides) or comprising a variety of herbicides (removes Careless agent combination) composition purposes,
For preventing the noxious plant in root crop plant,
And/or
The plant growth regulator being used as in root crop plant,
The wherein described Herbicidal combination includes or is made of (i) aclonifen and (ii) isoxaflutole.
The invention further relates to the purposes of the composition as defined in the context of the invention, the composition extraly wraps Containing one or more other components, described group is selected from formulation auxiliary agents, crop protection common additive and other chemurgies It learns reactive compound and (is different from aclonifen or the agricultural chemical activity chemical combination different from component (i) as defined above and (ii) Object, i.e. the agricultural chemical activity compound in addition to (i) aclonifen and (ii) isoxaflutole).
In a preferred embodiment of the invention, aclonifen is the herbicide uniquely used.Therefore, the present invention's In one preferred embodiment, in the composition used in the context of the present invention, aclonifen is unique existing herbicide, i.e., Other herbicidal active components are not present in the composition.
In another preferred embodiment of the present invention, aclonifen is the agricultural chemical activity compound uniquely used. Therefore, in a preferred embodiment of the invention, in the composition used in the context of the present invention, aclonifen is unique Other agrochemically active compounds are not present in existing agricultural chemical activity compound in the composition.
When the Herbicidal combination used in the context of the present invention is by herbicide (i) aclonifen and (ii) isoxaflutole When composition, this means the Herbicidal combination in this case, used in the context of the present invention or the context of the invention The middle composition comprising the Herbicidal combination used do not contain the activity of weeding of any other (i.e. not additional) at Point, and preferably do not contain any other agricultural chemical activity compound.
Herein, term " other herbicidal active components " and " other agrochemical reactive compounds " refer respectively to, row In " pesticide manual (The Pesticide Manual) ", the 16th edition, the Britain crop protection committee (the British Crop Protection Council) and the chemical meeting (the Royal Soc.of Chemistry) of imperial family, in 2012, in addition to aclonifen Or the herbicide other than aclonifen and isoxaflutole and agricultural chemical activity compound (pesticide).
Aclonifen used according to the invention, herbicide (i) used according to the invention and (ii) conjugate or according to The composition (conjugate for preferably comprising herbicide (i) and (ii)) that the present invention uses is not only in preventing root crop plant In terms of noxious plant or undesired plant, excellent activity of weeding is shown, but also show compatible with root crop Property, i.e., the described herbicide not will produce root crop significantly damages and/or undesirable underproduction.
It has furthermore been found that the selectivity of the herbicide used in the prior art can be improved.Benzene used according to the invention Careless ether, the conjugate of herbicide (i) used according to the invention and (ii) or composition used according to the invention (preferably comprise The conjugate of herbicide (i) and (ii)), agriculturally acceptable level can be in the damage for root crop plant On, it realizes well to excellent (total) control of weeds.In addition, compared with many herbicides used in the prior art, using Aclonifen used according to the invention, the conjugate of herbicide (i) used according to the invention and (ii) or according to the present invention When composition (conjugate for preferably comprising herbicide (i) and (ii)) used, observe damage type harmfulness it is smaller and/ Or severity is relatively low, and impacted root crop plant be able to it is largely or entirely extensive from the damage type It is multiple.
In addition, the conjugate of aclonifen used according to the invention, herbicide (i) used according to the invention and (ii) or Composition (conjugate for preferably comprising herbicide (i) and (ii)) used according to the invention can be used as the plant of root crop plant Object growth regulator, preferably as the plant growth regulator of cassava, to improve the harvesting yield of root crop plant (especially It is the weight of root tuber) and/or the plant growth (the especially growth of the leaf of root crop plant) of root crop plant is made to add Speed, at each occurrence compared with the root crop plant of unused herbicide treatment (untreated control group).
Present invention is preferably related to aclonifen used according to the invention, herbicide (i) used according to the invention and (ii) Conjugate or composition used according to the invention (conjugate for preferably comprising herbicide (i) and (ii)) purposes, Described in root crop plant be selected from sweet potato (Ipomoea batatas), cassava (Manihot esculenta) and Chinese yam (potato Floristics in Chinese yam category (Dioscorea)), more preferably wherein root crop plant is cassava.
The herbicide (i) and optional (ii) used in the context of the present invention is known per se, and especially It is documented in " pesticide manual ", the 16th edition, the chemical meeting of the Britain crop protection committee and imperial family, 2012 and document cited therein In.Illustrate the herbicide (i) used in the context of the present invention and (ii) more fully below.
Use in the context of the present invention and in herbicide (i) as defined herein and (ii), comprising herbicide (i) and (ii) it conjugate and uses in the context of the present invention certain comprising herbicide (i) and (ii) or weeding conjugate Composition is known per se.The herbicide (i) that uses in the context of the present invention and (ii), Herbicidal combination and at this Upper and lower certain compositions used herein comprising Herbicidal combination of invention are commercially available.
Root tuber (tuberous root, also referred to as root tuber (root tuber)) is in the period of plant is unable to active growth The perennating organ that inside reserves nutrient, increased, to make plant from survival in this year to next year.
Stem tuber and root tuber should not be obscured.Stem tuber is abnormal stem, and root tuber is abnormal root.
Root tuber is abnormal lateral root, is increased for use as storage organ.The increase region of root tuber or storage root can be in root End or intermediate generation, or it is related to entire root.Therefore, it is different in growth starting point (origin) with stem tuber, but Function and similar with stem tuber in appearance.The example of plant with apparent root tuber includes sweet potato, cassava, Chinese yam and dahlia (dahlia)。
Cassava, as annual crop in the torrid zone due to root tuber of its edible starch (main source of carbohydrate) It is cultivated extensively with subtropical zone, the cassava is also referred to as cassava (manioc), yuca, balinghoy or kamoteng Kahoy (in Philippine), tabolchu (in Northeastern India), mogo (in Africa), tapioca (mandioca), Tapioca starch (one kind originates in for root (tapioca-root), manioc root (kappa) (mainly in India) and Tapioca starch root (manioc root) The woody brush of the Euphorbiaceae (Euphorbiaceae) (Euphorbia (spurge)) of South America).When cassava is dried powdering When (or pearl shape) extract, cassava is referred to as tapioca starch；Its fermented sheet form is referred to as Gary (garri).
Cassava is the third-largest edible carbohydrate source that torrid areas is only second to rice and corn.In development China Family.Cassava is main staple food, and basic diet is provided for more than half of 1,000,000,000 populations..It is most drought-enduring one of crop, It can be grown on dead soil.Nigeria is maximum cassava producing country in the world, and Thailand is the largest dry cassava Exported country.
Cassava upgrowth situation in weeds field is poor, therefore generates less, smaller storage root.
Chinese yam is the adopted name of some plant species in the Dioscorea (Dioscoreaceae) for be formed edibility stem tuber.Africa, Asia, Latin America, the Caribbean and Oceania, they are planted to consume the herbaceous perennial vine that its starch stem tuber is cultivated Object.There are many Chinese yam cultivars.Although in some areas of America ＆ Canada, certain kinds of sweet potato are also known as potato Chinese yam, but it is not a part for Dioscoreaceae.
Chinese yam is monocotyledon, related to lily and careless class.Originate in Africa and Asia Chinese yam stem tuber size from Small potato change in size is to 60 kilograms or more.Chinese yam has a kind more than 600, the 95% of these crops is grown on Africa.
According to the present invention, statement " composition " includes the herbicide knot for including herbicide (i) as defined herein and (ii) The composition for closing object, and can be used in various acceptable or agronomically typical form and preparation, such as single " pre- It is mixed " in form.
What is used in the Herbicidal combination and the context of the invention that use in the context of the present invention includes herbicide In the composition of conjugate, what herbicide (i) used can be made of with (ii) the independent preparation of single-activity compound Spraying mixture is combined, such as " tank mix " or the composition can be that single active ingredient is being applied in a sequential manner When combined use, i.e., (be preferably less than 24 hours) in such as a few hours within rationally short time and apply one by one.
In the Herbicidal combination used in the context of the present invention, herbicide (i) used and (ii) include all (vertical Body) isomers and its mixture.
In the context of the present specification, if the simple format of the adopted name using reactive compound, every This includes all conventional derivatives (such as ester and salt) and isomers, especially one or more commercial forms in the case of kind. If adopted name indicates ester or salt, it also includes every other conventional derivatives in each case, such as other Ester and salt, free acid and neutral compound and isomers, especially optical isomer, especially one or more commercially available shapes Formula.Given compound name indicates at least one compound covered by adopted name, usually preferred compound.
The salt of the compound used in the context of the present invention can be used with following form：Respective alkali metal salt, alkali The form of the form of earth metal salt or ammonium salt, the form of preferably respective alkali metal salt, more preferable respective sodium or sylvite, it is optimal Select the form of respective sodium salt.
Aclonifen (IUPAC- titles：2- chloro-6-nitro-3-phenoxyanilines, CAS registration number 74070-46-5) it is known And be recorded in such as 007 482 A1 of EP or US 4,394,159.
Isoxaflutole (IUPAC titles：5- cyclopropyl -1,2- azoles -4- bases) (the fluoro- 2- mesyls-of α, α, α-three are to first Phenyl) ketone, CAS registration number 141112-29-0) it is for example recorded in 0 527 036 A1 of EP.
According to the present invention, Herbicidal combination as defined herein or composition used according to the invention (preferably comprise The conjugate of herbicide (i) and (ii)) include the aclonifen of herbicidally effective amount or the Herbicidal combination, and can include Routine in other components, such as different types of agricultural chemical activity compound and/or formulation auxiliary agents and/or crop protection adds Add agent or they that can be used together with these components.
According to the present invention, Herbicidal combination as defined herein or the group for including Herbicidal combination as defined herein Closing object can be applied in a manner of applying (split application) in batches at any time.Another possibility is individually to remove Careless agent (i) and (ii) or Herbicidal combination apply (sequentially applying) in the form of more parts, such as are going out the laggard of preemergence application Row goes out postemergence application, or early stage after emergence after application, the mid-term after emergence or later stage application.
It is preferred that simultaneously or almost simultaneously applying the conjugate of herbicide (i) as defined herein and (ii).Hereinafter, several It refers to by herbicide (i) aclonifen and herbicide that herbicide (i) as defined herein and (ii) isoxaflutole, which is administered simultaneously, (ii) isoxaflutole is all applied in 24 hours, is preferably applied in 12 hours, more preferably in 6 hours, even more preferably In 3 hours.
In particularly preferred embodiments, herbicide (i) as defined herein is used together with (ii) (i.e. in same a period of time Between).Therefore, in particularly preferred embodiments, using the composition for including herbicide (i) and (ii) as defined herein.
In preferred embodiments, aclonifen used according to the invention, herbicide (i) used according to the invention and (ii) conjugate or composition used according to the invention (conjugate for preferably comprising herbicide (i) and (ii)) every season is only applied With primary.It has been found that the primary aclonifen used according to the invention of every season application, herbicide (i) used according to the invention and (ii) conjugate or composition used according to the invention (preferably comprising herbicide (i) and (ii) conjugate) sufficiently achieves this Invention effect described herein up and down, especially with regard to activity of weeding (above aspect (a) and (b)) and/or selectivity/compatible Property (above aspect (c)).
In a preferred embodiment, aclonifen used according to the invention, herbicide used according to the invention (i) it is pressed with the conjugate of (ii) or composition used according to the invention (conjugate for preferably comprising herbicide (i) and (ii)) It is primary according to (Gregorian) in every lattice application over the years, twice or thrice, i.e., according to Gregorian calendar, applied once, twice is carried out every year Using or apply three times.
In a preferred embodiment, aclonifen used according to the invention, herbicide used according to the invention (i) it is pressed with the conjugate of (ii) or composition used according to the invention (conjugate for preferably comprising herbicide (i) and (ii)) According to (Gregorian) in every lattice, application is primary over the years, i.e., according to Gregorian calendar, carries out applied once every year.
In preferred embodiments, aclonifen used according to the invention, herbicide (i) used according to the invention and (ii) conjugate or composition used according to the invention (conjugate for preferably comprising herbicide (i) and (ii)) is at about 12 Application is primary in month, i.e., applied once is carried out in about 12 months.
When using herbicide (i) as defined herein and (ii) conjugate or it is as defined herein include herbicide (i) When the composition of the conjugate of (ii), observed effect shows as more effective herbicide effect, and prevention is so far not It is the species (active blank) that can prevent, extended using the phase and/or the number of the required single administration of reduction, and therefore for For user, the more favorable control of weeds system from the point of view of economy and ecological view.
As described above, the conjugate of herbicide (i) as defined herein and (ii) or it is as defined herein include herbicide (i) and the composition of the conjugate of (ii) can be in preemergence application and/or postemergence application.
Preferably, the conjugate of herbicide (i) as defined herein and (ii) or it is as defined herein include herbicide (i) The composition of the conjugate of (ii) uses in preemergence application.
Preferably, comprising herbicide in Herbicidal combination used according to the invention and used according to the invention In the composition of conjugate, amount higher of component (i) the i.e. total amount of aclonifen (by weight) than component (ii) isoxaflutole.
Therefore, comprising herbicide knot in Herbicidal combination used according to the invention and used according to the invention In the composition for closing object, (i) weight ratio of the total amount of the total amount of aclonifen and (ii) isoxaflutole be preferred ＞ 1 (be more than 1: 1), more preferable ＞ 2 is more than 2: 1, even more preferably ＞ 3, that is, be more than 3: 1.
Comprising Herbicidal combination in Herbicidal combination according to the present invention and/or used according to the invention In composition, (i) weight ratio of the total amount of the total amount of aclonifen and (ii) isoxaflutole preferably 2: 1 to 15: 1 range It is interior, more preferably in the range of 3: 1 to 12: 1.
It is combined comprising herbicide in Herbicidal combination used according to the invention and/or used according to the invention In the composition of object, (i) weight ratio of the total amount of aclonifen and the total amount of (ii) isoxaflutole is particularly preferably 4: 1 to 12: 1 In the range of, most preferably in the range of 5: 1 to 8: 1.
As defined herein, herbicide (i) aclonifen and optional (ii) isoxazole used in the context of the present invention The preferred rate of application [being indicated with g ai./ha, i.e. the grams of per hectare active constituent] of humulone is as follows：
If aclonifen be in the context of the invention unique herbicidal active component or unique agriculture chemistry live Property compound, then aclonifen preferably with 100 to 3000g ai./ha ratio apply, more preferably with 200 to 2500g ai./ha Ratio application, particularly preferably with 400 to 2000g ai./ha ratio apply, most preferably with 500 to 1800g ai./ha's Ratio is applied.
If use in the context of the present invention herbicide (i) as defined herein and (ii) conjugate or comprising except The composition of the conjugate of careless agent (i) and (ii), then (i) aclonifen and the preferred amounts of (ii) isoxaflutole are as follows：
(i) aclonifen is preferably applied with 100 to 1000g a.i./ha ratio, more preferably with 200 to 900g g a.i./ The ratio of ha is applied, and is particularly preferably applied with 400 to 800g a.i./ha ratio, and most preferably with 500 to 700g The ratio of a.i./ha is applied, and
(ii) isoxaflutole is preferably applied with 10 to 250g a.i./ha ratio, more preferably with 25 to 200g a.i./ The ratio of ha is applied, and is particularly preferably applied with 40 to 150g a.i./ha ratio, and most preferably with 50 to 125g a.i./ The ratio of ha is applied.
The conjugate of herbicide (i) as defined herein and (ii) more preferably with more preferably ratio as defined above (such as Defined in after term " more preferable ") application, and particularly preferably with particularly preferred ratio (such as term as defined above Defined in after " particularly preferred ") application.
In addition, the conjugate of herbicide (i) and (ii) as defined herein can be with other agricultural chemical activity compounds (such as safener, fungicide, insecticide, other herbicides and other plant growth regulator) or with formulation auxiliary agents and Conventional additives in crop protection are used together.Additive is such as fertilizer and colorant.In each case, preferably above-mentioned The weight of the rate of application or rate of application range and above-mentioned aclonifen and isoxaflutole of above-mentioned aclonifen and isoxaflutole Than.
In the cassava field of the Colombia of report, most important and most harmful weeds type is (African Crop Science Journal 1994,519-530)：Fern (Pteridium aquilinum L.Kuhn), cogongrass (Imperata Cylindrica L.Beauv.), molasses grass (Melinis ninutiflora Beauv.), bur (Sida acuta Burm F.), the rhizome of nutgrass flatsedge (Cyperus rotundus L.), Drilgrass (Commelina diffusa Burm F.), subspecies Diffuse J.K.Morton, Ageratum conyzoides (Ageratum conyzoides L.) and purslane (Portulaca oleraceae L.), the rhizome of nutgrass flatsedge (purple robe spiral nutgrass flatsedge (purple nutsedge), Rottboellia exaltata L. F (Rottboellia exaltata (Lour) Clayton) (Rottboellia exaltata (Raoul grass)), Sorghum halepense (Sorghum halepense L.Pers) (Johnson grass (Johnson grass)) and Ipomoea kind (Ipomoea sp.) (morning glory (morning glory)).
In Nigeria, broad-leaved species are the most common weeds of all regions, averagely account for the 71- of the whole species recorded 78%.It is dogstail that existing weed species, which only have 17-19%, and 4-7% is nutgrass flatsedge.In entire survey area, exist Five kinds of weed species, that is, Ageratum conyzoides (Ageratum conyzoides L.), alternanthera (Alternenthera sessilis L.R.Br.ex Roth), Brazilian sensitive plant (Mimosa invisa Mart), lady's-grass (Digitaria horizontalis ) and big broomcorn millet (Panicum maximum Jacq) Willd.
In the Nigeria west and south, observe that annual grassy weeds (especially broad leaved weed) is most common in cassava, and And most common species are hairy euphorbia (Euphorbia hirta L.) and Talinum triangulate Willd.
African Crop Science Journal the 4th phases of of volume 1994,2, the 519-530 pages summarizes in Buddhist nun day Most common ten kinds of weed species in the cassava field of the Umuahia in Leah south：
Ageratum conyzoides (Ageratum conyzoide), the climing beans of hair (Calopogonium mucunoides), Alternenthera sessilis, Boreiria ocymoides, upright Commeline communis (Commelina erecta), poolroot (Chromolaena odorata), Brazilian sensitive plant (Mimosa invisa), match end (Commelina Benghalansis), plumage awns chrysanthemum (Tridax procumbens), Brachiaria delfexa, Platostoma Africanum, digitaria ciliaris (Digitaria adscendens), golden waist arrow (Synedrella nodiflora), big broomcorn millet (Panicum maximum), the rhizome of nutgrass flatsedge (Cyperus rotundus), cyperue esculentus (Cyperus esculentus).
Other relevant weed species present in the cassava field of Nigeria are that (dogstail, nutgrass flatsedge and broad-leaved are miscellaneous Grass)：Cogongrass (Imperata cylindrica), Bermuda grass (Cynodon dactylon), more fringe Chinese pennisetums (Pennisetumpolystachion), Mariscus alternifolius, painted euphorbia (Euphorbia Heterophylla), Talinum crassifolium (Talinum triangulare).
The associated parasitic weed species present in cassava field (such as in Nigeria) are Cuscuta australis (Cuscuta australis)。
Aclonifen, Herbicidal combination as defined herein or as defined herein according to the present invention as defined herein Composition plants the economically important harmful unifacial leaf and dicotyledonous harmful of the wide spectrum in root crop plant, particularly cassava Object has activity of weeding outstanding.
In the context of the present invention, " prevention " refers to compared with untreated noxious plant, one or more to have The growth of evil plant significantly reduces.Preferably, the growth of one or more noxious plants substantially reduces (60-79%), more excellent The growth of one or more noxious plants is selected largely or entirely to be suppressed (80-100%), especially one or more harmful plants The growth of object is nearly completely or completely suppressed (90-100%).
Preferably, the present invention relates to respectively freely defined in of the invention context, benzene used according to the invention grass The purposes of ether, Herbicidal combination used according to the invention or composition used according to the invention, one of which, Shuo Zhonghuo Whole noxious plants are selected from following weed species：Ageratum kind (Ageratum spp.), the climing Macroptilium kind of hair (Calopogonium spp.), Alternanthera kind (Alternanthera spp.), Borreria kind (Boreiria spp.), Commeline communis belongs to kind of (a Commelina spp.), perfumed hair cream or oil Cymbidium kind (Chromolaena spp.), Mimosa kind (Mimosa Spp.), plumage awns Chrysanthemum kind (Tridax spp.), Brachiaria kind (Brachiaria spp.), celestial grass belong to kind an of (Platostoma Spp.), knotgrass kind (Digitaria spp.), golden waist arrow belong to kind of (a Synedrella spp.), Panicum kind (Panicum Spp.), Cyperus kind (Cyperus spp.), cogon kind (Imperata spp.), Cynodon kind (Cynodon Spp.), Pennisetum kind (Pennisetum spp.), Mariscus Gaertn kind (Mariscus spp.), Euphorbia kind (Euphorbia spp.), Fameflower's kind (Talinum spp.), Cyclosorus kind (Pteridium spp.), molasses grass belong to kind (Melinis spp.), chrysanthemum harvest spp kind (Sida spp.), Portulaca kind (Portulaca spp.), Rottboellia exaltata L. F belong to kind (Rottboellia spp.), sorghum kind (Sorghum spp.), Mexician scammony belong to kind of (an Ipomea spp.), talon eria kind (Dactyloctenium spp.), Spigelia kind (Spigelia spp.), punarnava belong to kind of (a Boerhaavia spp.), Aspilia belongs to kind, Aneilima belongs to kind, luxuriant thatch belongs to kind (a Hyparrhenia spp.), Andropogon kind (Andropogon Spp.), Paspalum kind (Paspalum spp.), nakedflower murdannia herb belong to kind of (a Rhynchelytrum spp.), eleusine indica belongs to kind (Eleusine spp.), setaria kind (Setaria spp.), thorn capsule fiber crops belong to kind of (a Triumfetta spp.), false horsewhip category Kind (Stachytarpheta spp.), beggar-ticks kind (Desmodium spp.), Gomphrena kind (Gomphrena Spp.), Acacia kind (Tephrosia spp.), thorn bud fruit belong to kind of (an Acanthospermum spp.), bee saage belongs to kind (Hyptis spp.), Cenchrus kind (Cenchrus spp.), smallpox of ancient India belong to kind of (a Urena spp.), Vernonia kind (Vernonia spp.), spiderflower belong to kind of (a Cleome spp.), Crotalaria kind (Crotalaria spp.), Kyllinga Kind (Kyllinga spp.), Corchorus kind (Corchorus spp.), Ipomoea kind (Ipomoea spp.), Mitraearpus kind (Mitracarpus spp.), prostrate wedelia herb belong to kind of (a Melanthera spp.), Centrosema belongs to kind of (a Centrosema spp.), one The red category kind (Emilia spp.) of point, crotons belong to kind of (a Croton spp.), Leafflower kind (Phyllanthus spp.), west kind Nelumbo kind (Passiflora spp.), carpetweed belong to kind of (an Axonopus spp.), oldenlandia diffusa belongs to kind an of (Oldenlandia Spp.), Schwenckia belong to kind, Acalypha kind (Acalypha spp.), Coleus kind (Solenostemon spp.), Feather cockscomb belongs to kind (a Celosia spp.), anil kind (Indigofera spp.), Heterotis categories kind, golden button and belongs to kind (Acmella spp.), Leucaen kind (Leucaena spp.), punarnava belong to kind of (a Boerhavia spp.), Borreria Kind (Spermacoce spp.), ball spartina belong to kind of (Oplismenus spp.) and genus fimbristylis kind (Fimbristylis spp.)。
It is used according to the invention in a preferred aspect, the present invention relates to respectively freely defined in of the invention context Aclonifen, Herbicidal combination used according to the invention or composition used according to the invention purposes, one of which, Several or whole noxious plants are selected from following weed species：Ageratum kind (Ageratum spp.), the climing Macroptilium kind of hair (Calopogonium spp.), Alternanthera kind (Alternanthera spp.), Borreria kind (Boreiria spp.), Commeline communis belongs to kind of (a Commelina spp.), perfumed hair cream or oil Cymbidium kind (Chromolaena spp.), Mimosa kind (Mimosa Spp.), plumage awns Chrysanthemum kind (Tridax spp.), Brachiaria kind (Brachiaria spp.), celestial grass belong to kind an of (Platostoma Spp.), knotgrass kind (Digitaria spp.), golden waist arrow belong to kind of (a Synedrella spp.), Panicum kind (Panicum Spp.), Cyperus kind (Cyperus spp.), cogon kind (Imperata spp.), Cynodon kind (Cynodon Spp.), Pennisetum kind (Pennisetum spp.), Mariscus Gaertn kind (Mariscus spp.), Euphorbia kind (Euphorbia spp.), Fameflower's kind (Talinum spp.), Cyclosorus kind (Pteridium spp.), molasses grass belong to kind (Melinis spp.), chrysanthemum harvest spp kind (Sida spp.), Portulaca kind (Portulaca spp.), Rottboellia exaltata L. F belong to kind (Rottboellia spp.), sorghum kind (Sorghum spp.), Mexician scammony belong to kind of (an Ipomea spp.), talon eria kind (Dactyloctenium spp.), Spigelia kind (Spigelia spp.), punarnava belong to kind of (a Boerhaavia spp.), Aspilia belongs to kind, Aneilima belongs to kind, luxuriant thatch belongs to kind (a Hyparrhenia spp.), Andropogon kind (Andropogon Spp.), Paspalum kind (Paspalum spp.), nakedflower murdannia herb belong to kind of (a Rhynchelytrum spp.), eleusine indica belongs to kind (Eleusine spp.), setaria kind (Setaria spp.), thorn capsule fiber crops belong to kind of (a Triumfetta spp.), false horsewhip category Kind (Stachytarpheta spp.), beggar-ticks kind (Desmodium spp.), Gomphrena kind (Gomphrena Spp.), Acacia kind (Tephrosia spp.), thorn bud fruit belong to kind of (an Acanthospermum spp.), bee saage belongs to kind (Hyptis spp.), Cenchrus kind (Cenchrus spp.), smallpox of ancient India belong to kind of (a Urena spp.), Vernonia kind (Vernonia spp.) and spiderflower belong to kind of (a Cleome spp.).
Particularly, respectively freely defined in of the invention context, aclonifen used according to the invention, according to this hair The purposes of the bright Herbicidal combination used or composition used according to the invention, for preventing a kind of, several or all choosings From the noxious plant of following weed species：Ageratum kind (Ageratum spp.), the climing Macroptilium kind (Calopogonium of hair Spp.), Alternanthera kind (Alternanthera spp.), Borreria kind (Boreiria spp.), Commeline communis belong to kind (Commelina spp.), perfumed hair cream or oil Cymbidium kind (Chromolaena spp.), Mimosa kind (Mimosa spp.), plumage awns chrysanthemum Belong to kind of (a Tridax spp.), Brachiaria kind (Brachiaria spp.), celestial grass category kind (a Platostoma spp.), lady's-grass Belong to kind of (a Digitaria spp.), golden waist arrow belongs to kind of (a Synedrella spp.), Panicum kind (Panicum spp.), Cyperus Kind (Cyperus spp.), cogon kind (Imperata spp.), Cynodon kind (Cynodon spp.), Pennisetum kind (Pennisetum spp.), Mariscus Gaertn kind (Mariscus spp.), Euphorbia kind (Euphorbia spp.), Fameflower Kind (Talinum spp.), Cyclosorus kind (Pteridium spp.), molasses grass belong to kind of (a Melinis spp.), chrysanthemum harvest spp kind (Sida spp.), Portulaca kind (Portulaca spp.), Rottboellia exaltata L. F belong to kind of (a Rottboellia spp.), sorghum kind (Sorghum spp.), Mexician scammony belong to kind of (an Ipomea spp.), talon eria kind (Dactyloctenium spp.), Spigelia Kind of (Spigelia spp.), punarnava belong to kind of (a Boerhaavia spp.), beggar-ticks kind (Desmodium spp.), thousand days Red category kind (Gomphrena spp.), Acacia kind (Tephrosia spp.), thorn bud fruit belong to kind an of (Acanthospermum Spp.), bee saage belong to kind of (a Hyptis spp.), Cenchrus kind (Cenchrus spp.), smallpox of ancient India belong to kind of (a Urena spp.), Vernonia kind (Vernonia spp.) and spiderflower belong to kind of (a Cleome spp.).
More particularly, respectively freely defined in of the invention context, aclonifen used according to the invention, according to this The purposes of the Herbicidal combination or composition used according to the invention that use is invented, it is a kind of, several or whole for preventing Noxious plant selected from following weed species：Ageratum kind (Ageratum spp.), the climing Macroptilium kind (Calopogonium of hair Spp.), Alternanthera kind (Alternanthera spp.), Borreria kind (Boreiria spp.), Commeline communis belong to kind (Commelina spp.), perfumed hair cream or oil Cymbidium kind (Chromolaena spp.), Mimosa kind (Mimosa spp.), plumage awns chrysanthemum Belong to kind of (a Tridax spp.), Brachiaria kind (Brachiaria spp.), celestial grass category kind (a Platostoma spp.), lady's-grass Belong to kind of (a Digitaria spp.), golden waist arrow belongs to kind of (a Synedrella spp.), Panicum kind (Panicum spp.), Cyperus Kind (Cyperus spp.), cogon kind (Imperata spp.), Cynodon kind (Cynodon spp.), Pennisetum kind (Pennisetum spp.), Mariscus Gaertn kind (Mariscus spp.), Euphorbia kind (Euphorbia spp.), Fameflower Kind (Talinum spp.), Cyclosorus kind (Pteridium spp.), molasses grass belong to kind of (a Melinis spp.), chrysanthemum harvest spp kind (Sida spp.), Portulaca kind (Portulaca spp.), Rottboellia exaltata L. F belong to kind of (a Rottboellia spp.), sorghum kind (Sorghum spp.), Mexician scammony belong to kind of (an Ipomea spp.), talon eria kind (Dactyloctenium spp.), Spigelia Kind (Spigelia spp.) and punarnava belong to kind of (a Boerhaavia spp.).
Particularly, the example that can be mentioned that is some representative unifacial leaves of conjugate prevention that can be through the invention and double Cotyledon ruderal plant group.
At more specific aspect, the present invention relates to respectively freely defined in context of the invention, made according to the present invention The purposes of aclonifen, Herbicidal combination used according to the invention or composition used according to the invention, wherein one Kind, several or whole noxious plants are selected from：Ageratum conyzoides (Ageratum conyzoides), the climing beans (Calopogonium of hair Mucunoides), alternanthera (Alternanthera sessilis), Boreiria ocymoides, upright Commeline communis (Commelina erecta), poolroot (Chromolaena odorata), Brazilian sensitive plant (Mimosa invisa), match Head (Commelina benghalensis), plumage awns chrysanthemum (Tridax procumbens), Brachiaria delfexa, Platostoma africanum, digitaria ciliaris (Digitaria adscendens), lady's-grass (Digitaria Horizontalis), golden waist arrow (Synedrella nodiflora), big broomcorn millet (Panicum maximum), the rhizome of nutgrass flatsedge (Cyperus rotundus), cyperue esculentus (Cyperus esculentus), cogongrass (Imperata cylindrica), dog tooth Root (Cynodon dactylon), more fringe Chinese pennisetums (Pennisetum polystachion), napier grass (Pennisetum Purpureum), purple Chinese pennisetum (Pennisetum violaceum), Mariscus alternifolius, painted euphorbia (Euphorbia heterophylla), hairy euphorbia (Euphorbia hirta), Talinum crassifolium (Talinum triangulare), Fern (Pteridium aquilinum), molasses grass (Melinis ninutiflora), bur (Sida acuta), the white back of the body are yellow Flower harvest (Sida rhombifolia), Drilgrass (Commelina diffusa), purslane (Portulaca oleraceae), Rottboellia exaltata L. F (Rottboellia exaltata), Rottboellia exaltata L. F (Rottboellia cochinchinensis), Sorghum halepense (Sorghum halepense), trilobated leaf potato (Ipomea triloba), Egyptian grass (Dactyloctenium Aegyptium), Brachiara lata, zygostyle flower flowering shrubs (Spigelia anthemia), upright punarnava (Boerhaavia Erecta), Aspilia africana, Aneilima beniniense, tool involucre bud thatch (Hyparrhenia Involucrate), Guyana bluestem grass (Andropogon gayanus), Paspalum conjugatum (Paspalum conjugatum), circle Fruit ditch millet (Paspalum orbiculatum), nakedflower murdannia herb (Rhynchelytrum repens), yard grass (Eleusine Indica), half lotus of green bristlegrass branch (Setaria barbata), great Ye green bristlegrass (Setaria megaphylla), Triumfetta cordifolia, blue butterfly ape tail tree (Stachytarpheta cayennensis), scorpion tail beggarweed (Desmodium scorpiurus), Herba Gomphrenae celosioidis (Gomphrena celosioides), Tephrosia bracteolata, thorn Luxuriant fruit (Acanthospermum hispidum), bee saage (Hyptis suaveolens), Cenchrus biflorus, peach Flower (Urena lobata), Mongolian ringdove chrysanthemum (Vernonia ambigua), sweet vernal grass (Cleome viscosa), Tu, south Sub (Cuscuta australis), corchorus olitorius (Corchorus olitorius), lid dehiscent fruit (Mitracarpus Villosus), Melanthera scandens, Centrosema (Centrosema pubescens), suede tassel chrysanthemum (Emilia Coccinea), bristle crotons (Croton hirtus), phyllanthus amatusniruri (Phyllanthus amarus), three Room jutes (Corchorus trilocularis), passion plant (Passiflora foetida), enveloping sweet potato (Ipomoea Involucrate), carpetweed (Axonopus compressus), Herba Hedyotidis Corymbosae (Oldenlandia corymbosa), Acalypha ciliata, Schwenckia americana, purple boots careless (Solenostemon monostachyus), sequence Feather cockscomb (Celosia trigyna), hair wood blue (Indigofera hirsute), tendril tomonea (Heterotis Rotundifolia), short tongue flower Herba Cancriniae lasiocarpae (Acmella brachyglossa), white popinac (Leucaenaleucocephala), punarnava (Boerhavia diffusa), sweet basil spermacoce latifolia (Spermacoce Ocymoides), must awns bamboo grass (Oplismenus burmannii), beach louse grass (Fimbristylis littoralis), Cyperus iria (Cyperus iris) and setting kyllinga brevifolia (Kyllinga erecta).
At preferred aspect, the present invention relates to aclonifen as defined herein, herbicides as defined herein to combine The purposes of the composition of object or the conjugate comprising aclonifen or herbicide as defined herein, it is one of which, several or whole Noxious plant is selected from：Ageratum conyzoides (Ageratum conyzoides), the climing beans of hair (Calopogonium mucunoides), lotus seeds Careless (Alternanthera sessilis), Boreiria ocymoides, upright Commeline communis (Commelina erecta), perfume Herba Lycopi (Chromolaena odorata), Brazilian sensitive plant (Mimosa invisa), match end (Commelina Benghalensis), plumage awns chrysanthemum (Tridax procumbens), Brachiaria delfexa, Platostomaafricanum, digitaria ciliaris (Digitaria adscendens), lady's-grass (Digitaria Horizontalis), golden waist arrow (Synedrella nodiflora), big broomcorn millet (Panicum maximum), the rhizome of nutgrass flatsedge (Cyperus rotundus), cyperue esculentus (Cyperus esculentus), cogongrass (Imperata cylindrica), dog tooth Root (Cynodon dactylon), more fringe Chinese pennisetums (Pennisetum polystachion), napier grass (Pennisetum Purpureum), purple Chinese pennisetum (Pennisetum violaceum), Mariscus alternifolius, painted euphorbia (Euphorbia heterophylla), hairy euphorbia (Euphorbia hirta), Talinum crassifolium (Talinum triangulare), Fern (Pteridium aquilinum), molasses grass (Melinis ninutiflora), bur (Sida acuta), the white back of the body are yellow Flower harvest (Sida rhombifolia), Drilgrass (Commelina diffusa), purslane (Portulaca oleraceae), Rottboellia exaltata L. F (Rottboellia exaltata), Rottboellia exaltata L. F (Rottboellia cochinchinensis), Sorghum halepense (Sorghum halepense), trilobated leaf potato (Ipomea triloba), Egyptian grass (Dactyloctenium Aegyptium), Brachiara lata, zygostyle flower flowering shrubs (Spigelia anthemia), upright punarnava (Boerhaavia Erecta), Aspilia africana, Aneilima beniniense, tool involucre bud thatch (Hyparrhenia Involucrate), Guyana bluestem grass (Andropogon gayanus), Paspalum conjugatum (Paspalum conjugatum), circle Fruit ditch millet (Paspalum orbiculatum), nakedflower murdannia herb (Rhynchelytrum repens), yard grass (Eleusine Indica), half lotus of green bristlegrass branch (Setaria barbara), great Ye green bristlegrass (Setaria megaphylla), Triumfetta cordifolia, blue butterfly ape tail tree (Stachytarpheta cayennensis), scorpion tail beggarweed (Desmodium scorpiurus), Herba Gomphrenae celosioidis (Gomphrena celosioides), Tephrosia bracteolata, thorn Luxuriant fruit (Acanthospermum hispidum), bee saage (Hyptis suaveolens), Cenchrus biflorus, peach Flower (Urena lobata), Mongolian ringdove chrysanthemum (Vernonia ambigua), sweet vernal grass (Cleome viscosa) and south Tu Silk is sub (Cuscuta australis).
Particularly, by respectively freely defined in of the invention context, aclonifen used according to the invention, according to this It is a kind of, several or all selected from following for preventing to invent the Herbicidal combination that uses or composition used according to the invention Noxious plant：Ageratum conyzoides (Ageratum conyzoides), the climing beans of hair (Calopogonium mucunoides), alternanthera (Alternanthera sessilis), Boreiria ocymoides, upright Commeline communis (Commelina erecta), perfumed hair cream or oil Blue (Chromolaena odorata), Brazilian sensitive plant (Mimosa invisa), match end (Commelina Benghalensis), plumage awns chrysanthemum (Tridax procumbens), Brachiaria delfexa, Platostoma Africanum, digitaria ciliaris (Digitaria adscendens), lady's-grass (Digitaria horizontalis), golden waist arrow (Synedrella nodiflora), big broomcorn millet (Panicum maximum), the rhizome of nutgrass flatsedge (Cyperus rotundus), cyperue esculentus (Cyperus esculentus), cogongrass (Imperata cylindrica), Bermuda grass (Cynodon dactylon), more fringes Chinese pennisetum (Pennisetum polystachion), Mariscus alternifolius, painted euphorbia (Euphorbia Heterophylla), hairy euphorbia (Euphorbia hirta), Talinum crassifolium (Talinum triangulare), fern (Pteridium aquilinum), molasses grass (Melinis ninutiflora), bur (Sida acuta), Drilgrass (Commelina diffusa), purslane (Portulaca oleraceae), Rottboellia exaltata L. F (Rottboellia exaltata), Sorghum halepense (Sorghum halepense), trilobated leaf potato (Ipomea triloba), Egyptian grass (Dactyloctenium Aegyptium), Brachiara lata, zygostyle flower flowering shrubs (Spigelia anthemia), upright punarnava (Boerhaavia Erecta), scorpion tail beggarweed (Desmodium scorpiurus), Herba Gomphrenae celosioidis (Gomphrena celosioides), Tephrosia bracteolata, thorn bud fruit (Acanthospermum hispidum), bee saage (Hyptis Suaveolens), Cenchrus biflorus, Rose Mallow Root (Urenalobata), Mongolian ringdove chrysanthemum (Vernonia Ambigua), sweet vernal grass (Cleome viscosa) and Cuscuta australis (Cuscuta australis).
More particularly, by respectively freely defined in of the invention context, aclonifen used according to the invention, basis The Herbicidal combination or composition used according to the invention that the present invention uses for prevent it is a kind of, several or all selected from Under noxious plant：Ageratum conyzoides (Ageratum conyzoides), the climing beans of hair (Calopogonium mucunoides), lotus seeds Careless (Alternanthera sessilis), Boreiria ocymoides, upright Commeline communis (Commelina erecta), perfume Herba Lycopi (Chromolaena odorata), Brazilian sensitive plant (Mimosa invisa), match end (Commelina Benghalensis), plumage awns chrysanthemum (Tridax procumbens), Brachiaria delfexa, Platostoma Africanum, digitaria ciliaris (Digitaria adscendens), lady's-grass (Digitaria horizontalis), golden waist arrow (Synedrella nodiflora), big broomcorn millet (Panicum maximum), the rhizome of nutgrass flatsedge (Cyperus rotundus), cyperue esculentus (Cyperus esculentus), cogongrass (Imperata cylindrica), Bermuda grass (Cynodon dactylon), more fringes Chinese pennisetum (Pennisetum polystachion), Mariscus alternifolius, painted euphorbia (Euphorbia Heterophylla), hairy euphorbia (Euphorbia hirta), Talinum crassifolium (Talinum triangulare), fern (Pteridium aquilinum), molasses grass (Melinis ninutiflora), bur (Sida acuta), Drilgrass (Commelina diffusa), purslane (Portulaca oleraceae), Rottboellia exaltata L. F (Rottboellia exaltata), Sorghum halepense (Sorghum halepense), trilobated leaf potato (Ipomea triloba), seven pawls dragon (Ipomoea Mauritiana), Egyptian grass (Dactyloctenium aegyptium), Brachiara lata, zygostyle spend flowering shrubs (Spigelia anthemia), upright punarnava (Boerhaavia erecta) and Cuscuta australis (Cuscuta australis)。
Before germination, if by respectively freely defined in of the invention context, aclonifen used according to the invention, Herbicidal combination used according to the invention or if composition used according to the invention is applied to soil surface, it is miscellaneous Careless seedling be completely blocked emergence or weed growth until its reach cotyledon period, then just stop growing, and finally three To four weeks, they are completely dead.
After emergence, if by respectively freely defined in of the invention context, herbicide used according to the invention Conjugate or if composition used according to the invention to be applied to the green parts of plant, after treatment very short Growth also can drastically stop in time, and ruderal plant rests on the growth phase of administration time point, or in a period of time It is completely dead afterwards, to be eliminated by this method to the harmful weeds of crop plants at very early time point and in a manner of lasting Competition.
It is aclonifen used according to the invention, used according to the invention respectively freely defined in of the invention context Herbicidal combination or composition used according to the invention be characterized in that quickly start and lasting herbicide effect.
Particularly, defined in each context of the present invention freely of application, aclonifen used according to the invention, root When the Herbicidal combination used according to the present invention or composition used according to the invention, rate of application can be reduced, can be prevented more extensively The broad leaved weed of spectrum and grassy weed, can occur more quickly herbicide effect, effect duration can it is longer, can be preferably Prevention noxious plant and only carry out it is primary or seldom time application and administration period can extend.
Above-mentioned characteristics and advantages are beneficial to control of weeds practice, to keep crops from undesirable competitive plant It influences, and therefore ensures and/or improve yield from the perspective of qualitative and quantitative.From the point of view of the characteristic, these new knots Close the state of the art that object has obviously surmounted this field.
Although respectively freely defined in of the invention context, aclonifen used according to the invention, according to the present invention The Herbicidal combination or composition used according to the invention used all has excellent remove to unifacial leaf and broadleaf weed Careless activity, but crop plants are only by lesser degree of damage, if any.
In addition, some compositions according to the present invention have excellent growth regulating characteristic for crop plants.They with The mode of regulation and control participates in the metabolism of plant, so as to for exciting the direct effect to plant component, and for example, by drawing Dehydration and stunted growth are sent out to promote to harvest.In addition, they are further adapted for general prevention and inhibit undesirable nutrient growth, Do not destroy plant simultaneously.In most of unifacial leaves and dicotyledonous crops, nutrient growth is inhibited to be very important, because in this way It can reduce or avoid completely the production loss caused by lodging.
Due to its weeding characteristic and plant growth regulating characteristic, composition of the invention can be used for preventing genetic modification and make Noxious plant in object plant or the crop plants for passing through mutation/selection acquisition.In general, these crop plants be by it is specific, have What the characteristic of profit was distinguish, such as the resistance to Herbicidal combinations or the pathogen (example to plant disease or plant disease Such as specific insect or microorganism such as fungi, bacterium or virus) resistance.Other concrete properties are related to the number of such as harvested material Amount, quality, storability, composition and specific ingredient.Thus, for example, it is known that genetically modified plants are those of content of starch increases Or those of starch quality change, or wherein harvested material has different those of aliphatic acid compositions.
Root crop plant is alternatively genetically modified or is obtained by Catastrophic selection.Such as 97/44473 A1 of WO It is related to converting and producing cassava plant (protoplast).92/05259 A1 of WO are described with improved carbohydrate content Genetically modified plants, especially cassava plant.
The invention further relates to it is a kind of prevention root crop plant in unwanted vegetation (such as noxious plant) method, It include for example by method before method after method, seedling in front of seedling or seedling and after seedling, will be respectively freely defined in context of the invention , aclonifen, Herbicidal combination used according to the invention or combination used according to the invention used according to the invention Object, the region for being applied to plant (such as noxious plant), the position of these plants, vegetable seeds or plant growth (such as are cultivated Region).
Therefore, on the other hand, the present invention relates to a kind of methods, are used for：
Undesired plant growth is prevented,
And/or
The noxious plant in root crop plant is prevented,
And/or
The plant growth in root tuber crop plants is adjusted,
The method includes following step：By aclonifen respectively as defined above, used according to the invention, according to this It invents the Herbicidal combination used or composition used according to the invention is applied to root crop plant, root crop plant Position, the seed of root crop plant, the region of root crop plant growth or be intended to make the area of root crop plant growth Domain.
Preferably, in the method for the present invention as defined above, root crop plant is selected from sweet potato, cassava and Chinese yam (plant species in Dioscorea), more preferable root crop plant are cassava.
On the other hand, the present invention relates to a kind of methods of the present invention as defined above, wherein preventing as described above one Kind, several or whole noxious plants.
On the other hand, the present invention relates to a kind of methods of the present invention as defined above, wherein root crop plant By genetic modification, the preferably described root crop plant is genetically modified plants or is obtained by mutation/selection.
As already mentioned above, the Herbicidal combination as defined in the context of the present invention serves not only as mixing Preparation (if appropriate, together with other agricultural chemical activity compound, additive and/or conventional formulation auxiliaries), conduct Aqueous dilution is applied in a usual manner；It can also be by making the separately formulated group of separately formulated component or part with water Divide and dilutes together and the Herbicidal combination defined in the context such as the present invention is used as so-called tank mix.
Can by defined in the context such as the present invention Herbicidal combination and comprising as defined in context of the invention The composition of Herbicidal combination prepared in various ways, this depends on main biological parameter and/or Chemical Physics Parameter.It is usual feasible formulation examples below：Wettable powder (WP), water-soluble concentrating agents, emulsifiable concentrating agents (EC), water Property solution (SL), emulsion (EW) such as oil in water emulsion and water-in-oil emulsion, sprayable solution agent or sprayable emulsion, suspend it is dense Contracting agent (SC), oil dispersant (OD), oil base or aqueous dispersion agent, pulvis (DP), seed dressing material, are used for soil application at suspension emulsion Or the granule for disseminating or water-dispersible granules (WG), ULV preparations, microcapsule formulations or cerate.
Each dosage form is known in principle, and is recorded in for example：Winnacker-K ü chler, " Chemische Technologie ", volume 7, C.Hauser Verlag Munich, the 4th edition, 1986；Van Valkenburg, " Pesticide Formulations ", Marcel Dekker N.Y., 1973；K.Martens, " Spray Drying Handbook ", the 3rd edition, 1979, G.Goodwin Ltd.London.
Required formulation auxiliary agents, such as inert substance, surfactant, solvent and other additives are also known, and It is recorded in for example：Watkins, " Handbook of Insecticide Dust Diluents and Carriers ", the 2nd Version, Darland Books, Caldwell N.J.；H.v.Olphen, " Introduction to Clay Colloid Chemistry”；Second edition, J.Wiley＆Sons, N.Y.Marsden, " Solvents Guide ", second edition, Interscience, N.Y.1950；McCutcheon ' s, " Detergents and Emulsifiers Annual ", MC Publ.Corp., Ridgewood N.J.；Sisley and Wood, " Encyclopedia of Surface Active Agents ", Chem.Publ.Co.Inc., N.Y.1964；“”[Surface-active ethylene oxide Adducts], Wiss.Verlagsgesellschaft, Stuttgart 1976, Winnacker-Kiichler, " Chemische Technologie ", volume 7, C.Hauser Verlag Munich, the 4th edition, in 1986.
Based on these preparations, can also prepare containing other agrochemical active ingredients (such as be not belonging to as the present invention Other herbicides of component (i) and (ii) defined in context), fungicide or insecticide, and contain safener, fertilizer And/or the conjugate of growth regulator, such as in the form of pre-composition or tank mix.
Wettable powder (sprayable powder) is the product that can be dispersed in water, in addition to reactive compound it Outside, also contain diluent or inert substance and ion or nonionic surfactant (wetting agent, dispersant), such as poly- second Oxygroup alkyl phenol, polyethoxylated fatty alcohols or polyethoxylated fatty amines, alkylsulfonate, alkylbenzene sulfonate, lignin Sodium sulfonate, 2,2 '-dinaphthylmethane -6,6 '-sodium disulfonates, nekal or oleoyl methyl sodium taurocholate.
Emulsifiable concentrating agents is prepared by the following method：Reactive compound is dissolved in organic solvent (such as butanol, hexamethylene Ketone, dimethylformamide, dimethylbenzene or higher boiling aromatic compounds or hydro carbons) in, and add one or more ions or it is non-from Sub- surfactant (emulsifier).The example of workable emulsifier is：The calcium salt of alkyl aryl sulphonic acid, such as detergent alkylate Sulfoacid calcium；Or nonionic emulsifier, such as fatty acid polyethylene glycol ester, alkylaryl polyglycol ether, poly alkyl alcohol ethylene glycol Ether, propylene oxide/ethylene oxide condensate, alkyl, polyether, sorbitan fatty acid ester, polyoxyethylene sorbitol acid anhydride fat Acid esters or polyoxyethylene sorbitol ester.
For pulvis by the way that reactive compound is ground acquisition together with finely divided solid matter, the solid matter is for example sliding Stone, natural clay such as kaolin, bentonite and pyrophyllite or diatomite.
Suspension concentrating agents (SC) can be water base or oil base.They can be for example, by by commercially available ball mill and such as Fruit is properly added other surfactant and carries out wet grinding and prepare, and the surfactant is as example above in other agent Those of in the case of type it has been mentioned that cross.
Emulsion can be used for example by blender, colloid mill and/or static mixer aqueous such as oil in water emulsion (EW) Organic solvent is prepared with other surfactant if appropriate, and the surfactant is for example above in other dosage forms In the case of it has been mentioned that cross those of.
Granule can be by the way that reactive compound to be sprayed on the granulating inert material of adsorptivity, or by binder Under the auxiliary of (such as polyvinyl alcohol, Sodium Polyacrylate or mineral oil) by reactive compound concentrate be applied to carrier (such as sand, Kaolin or particulate inert material) surface and prepare.The mode that fertiliser granulates can also be usually used in preparing will suitable activity Compound is granulated, if it is desired, is mixed with fertilizer.In general, water-dispersible granules pass through following conventional method system It is standby：For example, spray drying process, fluidized bed prilling method, disk granulation method, using the mixing method of super mixer and without using solid The extrusion molding of body inert substance.About disk particle, fluid bed granulate, squeeze out particle and spraying granule preparation, see, for example, " Spray-Drying Handbook " the 3rd edition 1979, G.Goodwin Ltd., London；J.E.Browning, " Agglomeration ", Chemical and Engineering pages 1967,147 and hereinafter；“Perry’s Chemical Engineer ' s Handbook ", the method in the 5th edition, McGraw-Hill, New York 1973, the 8-57 pages.
About the other details for preparing crop protection products, see, for example, G.C.Klingmam, " Weed Control as A Science ", John Wiley and Sons, Inc., New York, 1961,81-96 pages and J.D.Freyer, S.A.Evans, " Weed Control Handbook ", the 5th edition, Blackwell Scientific Publications, Oxford, 1968, the 101-103 pages.
In general, agrochemical formulations include the reactive compound of 1 to 95 weight %, according to dosage form, usually following concentration：
A concentration of for example, about 10 to the 95 weight % of reactive compound in wettable powder, until the surplus of 100 weight % It is made of customary formulation components.In the case of emulsifiable concentrating agents, the concentration of reactive compound can amount to such as 5 to 80 weights Measure %.In most cases, the preparation of powder form includes the reactive compound of 5 to 20 weight %, sprayable solution agent packet Reactive compound containing about 0.2 to 25 weight %.In the case of granule such as dispersion-ness particle agent, the content of reactive compound It is to exist with liquid or solid form, and used which granulation aid and filled out to be partly dependent on the reactive compound Material.In general, in the case of water-dispersible granules, content adds up to 10 to 90 weight %.
In addition, if suitable, above-mentioned active agent preparations may include conventional adhesive, wetting agent, dispersant, emulsification Agent, preservative, antifreeze, solvent, filler, colorant, carrier, antifoaming agent, volatilization inhibitor and pH adjusting agent or viscosity-adjusting agent Agent.
For example, by surfactant, this hair preferably can be improved by the wetting agent selected from fatty alcohol polyglycol ether The herbicide effect of bright Herbicidal combination.Preferably, fatty alcohol polyglycol ether contains 10-18 carbon in fatty alcohol group Atom, and contain 2-20 ethylene oxide unit in polyethylene glycol ether moiety.Fatty alcohol polyglycol ether can be nonionic Type or ionic, for example, form of fatty alcohol polyglycol ether sulfate, such as can be with alkali metal salt (such as sodium salt Or sylvite) or ammonium salt form use, can also be used in the form of alkali salt such as magnesium salts, such as C12/C14Fatty alcohol two Glycol ether sodium sulfate (LRO, Clariant)；See, for example, EP-A-0476555, EP-A-0048436, EP- A-0336151 or US-A-4,400,196 and Proc.EWRS Symp. " Factors Affecting Herbicidal Activity and Selectivity ", 227-232 (1988).Nonionic fatty alcohols polyglycol ether is, for example, to contain 2-20 A, preferably 3-15 ethylene oxide unit (C10-C18)-, preferably (C10-C14)-fatty alcohol polyglycol ether (such as different 13 Alkanol polyglycol ether), such as fromSeries, such as X-030、 X- 060、X-080 orX-150 (is all from Clariant GmbH).
Present invention also contemplates that herbicide (i) and (ii) as defined above and the above-mentioned profit selected from fatty alcohol polyglycol ether The conjugate of humectant, the preferably described fatty alcohol polyglycol ether is in fatty alcohol group containing 10-18 carbon atom and in poly- second Contain 2-20 ethylene oxide unit in glycol ether moiety, and the fatty alcohol polyglycol ether can be with nonionic or ion shape There is (such as in the form of fatty alcohol polyglycol ether sulfate) in formula.It is preferred that C12/C14Fatty alcohol diethylene glycol ethers sodium sulphate (LRO, Clariant)；With the different tridecanol polyglycol ether with 3-15 ethylene oxide unit, such as From Genapol X series, such as X-030、 X-060、X-080 orX-150 (all is from Clariant GmbH).It is known that fatty alcohol polyglycol ether such as nonionic or from Sub- fatty alcohol polyglycol ether (such as fatty alcohol polyglycol ether sulfate) is also suitable for many other herbicides, especially The bleeding agent and active reinforcing agent of herbicide selected from imidazolone (see, for example, EP-A-0502014).
Furthermore it is known that fatty alcohol polyglycol ether such as nonionic or ion fatty alcohol polyglycol ether (such as poly alkyl alcohol Glycol ether sulfate) be also suitable for many other herbicides, particularly the herbicide selected from imidazolone bleeding agent and Synergist (see, for example, EP-A-0502014).
The herbicidal effect of the Herbicidal combination of the present invention can also be enhanced using vegetable oil.Term vegetable oil should be understood that To mean the oil from oilseed plant species, for example, soybean oil, rapeseed oil, corn oil, sunflower oil, cottonseed oil, linseed oil, Coconut oil, palm oil, safflower oil or castor oil, especially rapeseed oil and its transesterification product, such as Arrcostab, such as rapeseed oil Methyl esters or rapeseed oil ethyl ester.
Vegetable oil is preferably C10-C22, preferably C12-C20The ester of aliphatic acid.C10-C22Aliphatic ester is for example unsaturated Or saturation C10-C22The ester of aliphatic acid, the especially ester of the aliphatic acid with even number of carbon atoms, such as erucic acid, lauric acid, palm fibre Palmitic acid acid, particularly, C18Aliphatic acid such as stearic acid, oleic acid, linoleic acid or linolenic ester.
Preferred C1-C20Alkyl-C10-C22Aliphatic ester is methyl esters, ethyl ester, propyl ester, butyl ester, 2- ethylhexyls and ten Dialkyl ester.Preferred ethylene glycol and glycerine-C10-C22Aliphatic ester is C10-C22The glycol ester and glycerine of aliphatic acid The uniform object or mixture of ester, the C10-C22Aliphatic acid especially has those of even number of carbon atoms aliphatic acid, such as mustard Acid, lauric acid, palmitic acid, especially C18Aliphatic acid such as stearic acid, oleic acid, linoleic acid or leukotrienes.
Vegetable oil can be for example present in the form of commercially available oil-including formulation additive in the Herbicidal combinations of the present invention, It is based particularly on those of rapeseed oil, such as(Victorian Chemical Company, Australia, under Referred to herein as Hasten, main component：Rapeseed oil ethyl ester),B (Novance, France, hereinafter referred to as ActirobB, main component：Rapeseed methylester), Rako-(Bayer AG, Germany, hereinafter referred to as Rako- Binol, main component：Rapeseed oil),(Stefes, Germany, hereinafter referred to as Renol, plant oil component： Rapeseed methylester) or Stefes(Stefes, Germany, hereinafter referred to as Mero, main component：Rapeseed oil Methyl esters).
In another embodiment, the present invention cover as the present invention context defined in Herbicidal combination with it is upper State the conjugate of vegetable oil.Therefore, in another embodiment, the present invention cover comprising containing above-mentioned vegetable oil such as this hair The purposes of the composition of Herbicidal combination defined in bright context, the vegetable oil are such as rapeseed oil, preferably city The form for the oil-including formulation additive sold is based particularly on those of rapeseed oil, such as(Victorian Chemical Company, Australia, hereinafter referred to as Hasten, main component：Rapeseed oil ethyl ester), B (Novance, France, hereinafter referred to as ActirobB, main component：Rapeseed methylester), Rako-(Bayer AG, Germany, hereinafter referred to as Rako-Binol, main component：Rapeseed oil),(Stefes, Germany, Hereinafter referred to Renol, plant oil component：Rapeseed methylester) or Stefes(Stefes, Germany, below In be known as Mero, main component：Rapeseed methylester).
In order to use, optionally will in a usual manner be diluted with preparation existing for commercial form, for example, wettable powder, Water is used in the case of emulsifiable concentrating agents, dispersant and water-dispersible granules.Pulvis, soil particle agent, for what is disseminated Granule and the preparation of sprayable solution dosage form formula are usually further diluted without other inert substances using preceding.
Reactive compound can be applied to plant, the position of plant, the seed of plant or cultivation region (soil in field), It is preferably applied to the position of green plants and plant, and if appropriate, the soil in field can also be applied to.
Including the composition of the upper and lower Herbicidal combination used herein of the present invention has the advantage for being easy to application, and Advantageously, the amount of component exists with correct ratio each other.In addition, adjuvant in preparation can each other most preferably Match.
Embodiment
1. the product used
(all products can be obtained from Bayer CropScience for the following commercially available herbicide of test and Herbicidal combination To)：
Product P1 contains 600g/L aclonifens
Product P2 contains 500g/L aclonifens and 75g/L isoxaflutoles
2. biologic test
In the experimental plot (Research Farm) of Nigeria, cassava plant is tested.
Table 1 shows before emergence, the product P1 and P2 tested after treatment 6 weeks when the prevention of respective total weed Rate.In each case, total weed prevention will all be taken into account broad-leaved species, grassy weed and the prevention of nutgrass flatsedge.
Especially evaluate the prevention to following weeds：Acalypha ciliate, sequence feather cockscomb (Celosia Trigyna), ear is spent in three Room jutes (Corchorus trilocularis), hair wood blue (Indigofera hirsute), umbrella room Careless (Oldenlandia corymbosa), painted euphorbia (Euphorbia heterophylla), phyllanthus amatusniruri (Phyllanthus amarus), lid dehiscent fruit (Mitracarpus villosus), zygostyle flower flowering shrubs (Spigelia Anthemia), plumage awns chrysanthemum (Tridax procumbens), Talinum crassifolium (Talinum triangulare), Triumfetta Cordifolia, short tongue flower Herba Cancriniae lasiocarpae (Acmella brachyglossa), passion plant (Passiflora foetida), sweet basil Spermacoce latifolia (Spermacoce ocymoides), white popinac (Leucaena leucocephala), Centrosema (Centrosema Pubescens), curved boom grain (Brachiaria deflexa), big broomcorn millet (Panicum maximum), suede tassel chrysanthemum (Emilia Coccinea), bristle crotons (Croton hirtus), enveloping sweet potato (Ipomoea involucrate), poolroot (Chromolaena odorata), the climing beans of hair (Calopogonium mucunoides), Brazilian sensitive plant (Mimosa Invisa), Aspilia africana, the rhizome of nutgrass flatsedge (Cyperus rotundus), Mariscus alternifolius, purple boots Careless (Solenostemon monostachyus), tendril tomonea (Heterotis rotundifolia), palpus awns bamboo grass (Oplismenus burmannii), green bristlegrass half lotus branch (Setaria barbata) and close colored ditch millet (Paspalum scrobiculatum)。
Especially observe has very good extremely excellent effect to the prevention of following weeds：Acalypha ciliate、 Centrosema (Centrosema pubescens), purple boots careless (Solenostemon monostachyus), tendril tomonea (Heterotis rotundifolia), green bristlegrass half lotus branch (Setaria barbara), corchorus olitorius (Corchorus Olitorius), three Room jutes (Corchorus trilocularis), Rose Mallow Root (Urena lobata), thorn bud fruit (Acanthospermum hispidum), lid dehiscent fruit (Mitracarpus villosus), painted euphorbia (Euphorbia Heterophylla), match end (Commelina benghalensis), Herba Gomphrenae celosioidis (Gomphrena celosioides), Tephrosia bracteolata, green bristlegrass half lotus branch (Setaria barbata), lady's-grass (Digitaria Horizontalis), Rottboellia exaltata L. F (Rottboellia cochinchinensis), yard grass (Eleusine indica), Cenchrus biflorus, close colored ditch millet (Paspalum scrobiculatum), the rhizome of nutgrass flatsedge (Cyperus rotundus), Cyperus iria (Cyperus iris), sweet vernal grass (Cleome viscosa), painted euphorbia (Euphorbia heterophylla), Hairy euphorbia (Euphorbia hirta), phyllanthus amatusniruri (Phyllanthus amarus), Melanthera scandens, Schwenckia Americana, Aspilia africana and Baptisia (Tephrosia brateolata).
Table 2 is shown after harvesting, compared with the cassava crop plants (as reference) of hoe weeding, product P1 and P2 (herbicidal composition used according to the invention) is to the plant growth regulation of cassava crop plants.Plant growth regulating is made It is weighed to respective fresh quench cassava production, in each case, with the cassava crop plants with hoe weeding as reference Fresh quench cassava production (the being defined as 100%) percentage compared indicate.
Table 1：Before the seedling for using product P1 and P2 respectively in processing plot, the total weed control rate after processing at 6 weeks
Product The amount of products applied Total weed prevents, in terms of %
P1 2.5L/ha 72
P2 1.0L/ha 78
Table 2：Product P1 and P2 to the plant growth regulation of root crop plant, are indicated respectively with fresh quench yield
In the further field trial of the several different locations of Nigeria, following effect is observed.
In field trials, product P2 does not have any negative effect to cassava population, not negative to the vigorous growth of cassava Face is rung, and is had no adverse effect to the height on Manihot Esculenta ground.
It is 75-100%'s to be provided to the total weed prophylactic-therapeutic effect of weeds and broad-leaved with the field plots of product P2 processing Prevention is up to 82 days, this depends on weeds existing for place and each place.
Product P2 is shown to Ageratum conyzoides (Ageratum conyzoides), the climing beans (Calopogonium of hair Mucunoides), Centrosema (Centrosema pubescens), Chromoleana odorata, Corchorus Tricularia, Desmodium scorpirus, phyllanthus amatusniruri (Phyllanthus amarus), nightshade (Solanum sp), sweet basil spermacoce latifolia (Spermacoce ocymoides) and expelling parasite careless (Spigelia anthelmia) have The well prevention of (80-90%) to excellent (90-100%).
Product P2 provides good extremely excellent prevention to the main weeds of different location, especially to Acalypha Ciliata, Ageratum conyzoides (Ageratum conyzoides), upright punarnava (Boerhavia erecta), curved boom grain (Brachiaria deflexa), rice packet grass (Commelina bengalensis), the rhizome of nutgrass flatsedge (Cyperus rotundus), Lady's-grass (Digitaria horiontalis), painted euphorbia (Euphobia heterophylla), genus fimbristylis kind (Fimbristylis sp), Rottboellia exaltata L. F (Rottboellia cochinchinensis), plumage awns chrysanthemum (Tridax ) and Mongolian ringdove chrysanthemum (Vernonia amabigua) procumbens.
In some places, passion plant (Passiflora foetida) and the palm leaf lead a cow (Ipomoea mauritiana) be It is most difficult to the weeds of prevention.Product P2 provides both weeds for being difficult to prevent the prevention of ＞ 90%, especially in Crop Species Under conditions of good site preparation before plant.

Claims (15)

1. the purposes of aclonifen or the composition comprising (i) aclonifen
For preventing the noxious plant in root crop plant,
And/or
The plant growth regulator being used as in root crop plant.
2. purposes according to claim 1, wherein Herbicidal combination or composition comprising Herbicidal combination are used for,
The noxious plant in root crop plant is prevented,
And/or
As the plant growth regulator in root crop plant,
The wherein described Herbicidal combination includes or is made of (i) aclonifen and (ii) isoxaflutole.
3. according to the purposes of claims 1 or 2, wherein aclonifen is applied with 100 to 3000g ai./ha ratio.
4. according to the purposes of Claims 2 or 3, wherein in Herbicidal combination or in the composition comprising Herbicidal combination In, (i) weight ratio of the total amount of aclonifen and the total amount of (ii) isoxaflutole is in the range of 2: 1 to 15: 1, preferably 3: 1 To in the range of 12: 1.
5. according to the purposes of any one of Claims 1-4, wherein the composition used also includes one or more other groups Point, described group is selected from common additive and other agricultural chemical activity compound in formulation auxiliary agents, crop protection.
6. according to the purposes of any one of claim 1 to 5, wherein root crop plant is selected from sweet potato, cassava and Chinese yam (Dioscorea In plant variety), preferably wherein root crop plant be cassava.
7. according to the purposes of any one of claim 1 to 6, one of which, several or whole noxious plants are selected from following weeds object Kind：The climing Macroptilium kind of ageratum kind, hair, Alternanthera kind, Borreria kind, Commeline communis belong to kind, perfumed hair cream or oil Cymbidium kind, Mimosa Kind, plumage awns Chrysanthemum kind, Brachiaria kind, celestial grass belong to kind, knotgrass kind, golden waist arrow and belong to kind, Panicum kind, Cyperus kind, cogon Kind, Cynodon kind, Pennisetum kind, Mariscus Gaertn kind, Euphorbia kind, Fameflower's kind, Cyclosorus kind, molasses grass belong to kind, Huang Flower, which is harvested, belongs to kind, Portulaca kind, Rottboellia exaltata L. F category kind, sorghum kind, Mexician scammony category kind, talon eria kind, Spigelia kind, punarnava Belong to kind, Aspilia categories kind, Aneilima categories kind, bud thatch category kind, Andropogon kind, Paspalum kind, nakedflower murdannia herb category kind, eleusine indica Belong to kind, setaria kind, thorn capsule fiber crops category kind, false horsewhip and belongs to kind, beggar-ticks kind, Gomphrena kind, Acacia kind, thorn bud fruit Belong to kind, bee saage belongs to kind, Cenchrus kind, smallpox of ancient India belong to kind, Vernonia kind, spiderflower and belong to kind, Crotalaria kind, Kyllinga Kind, Corchorus kind, Ipomoea kind, Mitraearpus kind, prostrate wedelia herb belong to kind, Centrosema belongs to kind, tassel flower category kind, crotons category kind, leaf Lower pearl belongs to kind, Passiflora kind, carpetweed belong to kind, oldenlandia diffusa belongs to kind, Schwenckia belongs to kind, Acalypha kind, sheath stamen Flower belongs to kind, feather cockscomb category kind, anil kind, Heterotis category kind, golden button category kind, Leucaen kind, punarnava category kind, Feng Hua Grass belongs to kind, ball spartina belongs to kind and genus fimbristylis kind.
8. purposes according to any one of claims 1 to 7, one of which, several or whole noxious plants are selected from following weeds object Kind：The climing Macroptilium kind of ageratum kind, hair, Alternanthera kind, Borreria kind, Commeline communis belong to kind, perfumed hair cream or oil Cymbidium kind, Mimosa Kind, plumage awns Chrysanthemum kind, Brachiaria kind, celestial grass belong to kind, knotgrass kind, golden waist arrow and belong to kind, Panicum kind, Cyperus kind, cogon Kind, Cynodon kind, Pennisetum kind, Mariscus Gaertn kind, Euphorbia kind, Fameflower's kind, Cyclosorus kind, molasses grass belong to kind, Huang Flower, which is harvested, belongs to kind, Portulaca kind, Rottboellia exaltata L. F category kind, sorghum kind, Mexician scammony category kind, talon eria kind, Spigelia kind, punarnava Belong to kind, Aspilia categories kind, Aneilima categories kind, bud thatch category kind, Andropogon kind, Paspalum kind, nakedflower murdannia herb category kind, eleusine indica Belong to kind (an Eleusine spp.), setaria kind, thorn capsule fiber crops and belongs to kind, false horsewhip category kind, beggar-ticks kind, Gomphrena kind, gold Albizzia kind, thorn bud fruit belong to kind, bee saage category kind, Cenchrus kind, smallpox category kind of ancient India, Vernonia kind and spiderflower category kind.
9. according to the purposes of any one of claim 1 to 8, a kind of wherein, several or whole noxious plants are selected from：Ageratum conyzoides, The climing beans of hair, alternanthera, Boreiria ocymoides, upright Commeline communis, poolroot, Brazilian sensitive plant, match end, plumage awns chrysanthemum, Brachiaria delfexa, Platostoma africanum, digitaria ciliaris, lady's-grass, golden waist arrow, big broomcorn millet, the rhizome of nutgrass flatsedge, oily Sha Beans, Bermuda grass, more fringe Chinese pennisetums, napier grass, purple Chinese pennisetum, Mariscus alternifolius, painted euphorbia, are flown upward at cogongrass Grass, fern, molasses grass, bur, carries on the back bur, Drilgrass, purslane, Rottboellia exaltata L. F (Rottboellia at Talinum crassifolium in vain Exaltata), Rottboellia exaltata L. F (Rottboellia cochinchinensis), Sorghum halepense, trilobated leaf potato, seven pawl dragons, Egyptian grass, Brachiara lata, zygostyle flower flowering shrubs, upright punarnava, Aspilia africana, Aneilima beniniense, tool Involucre bud thatch, Guyana bluestem grass, Paspalum conjugatum, Herba Paspali orbicularis, nakedflower murdannia herb, yard grass, half lotus of green bristlegrass branch, great Ye green bristlegrass, Triumfetta cordifolia, blue butterfly ape tail tree, scorpion tail beggarweed, Herba Gomphrenae celosioidis, Tephrosia bracteolata, thorn bud Fruit, bee saage, Cenchrus biflorus, Rose Mallow Root, Mongolian ringdove chrysanthemum, sweet vernal grass, Cuscuta australis, corchorus olitorius, lid are split Fruit, Melanthera scandens, Centrosema, suede tassel chrysanthemum, bristle crotons, phyllanthus amatusniruri, three Room jutes, passion plant, tool are total The sweet potato of bud, carpetweed, Herba Hedyotidis Corymbosae, Acalypha ciliata, Schwenckia americana, purple boots grass, sequence Feather cockscomb, Mao Mulan, tendril tomonea, short tongue flower Herba Cancriniae lasiocarpae, white popinac, punarnava, sweet basil spermacoce latifolia, palpus awns bamboo grass, beach louse Grass, cyperus iria and setting kyllinga brevifolia.
10. according to the purposes of any one of claim 1 to 9, one of which, several or whole noxious plants are selected from：Ageratum conyzoides, hair Climing beans, alternanthera, Boreiria ocymoides, upright Commeline communis, poolroot, Brazilian sensitive plant, match end, plumage awns chrysanthemum, Brachiaria delfexa, Platostoma africanum, digitaria ciliaris, lady's-grass, golden waist arrow, big broomcorn millet, the rhizome of nutgrass flatsedge, oily Sha Beans, Bermuda grass, more fringe Chinese pennisetums, napier grass, purple Chinese pennisetum, Mariscus alternifolius, painted euphorbia, are flown upward at cogongrass Grass, fern, molasses grass, bur, carries on the back bur, Drilgrass, purslane, Rottboellia exaltata L. F (Rottboellia at Talinum crassifolium in vain Exaltata), Rottboellia exaltata L. F (Rottboellia cochinchinensis), Sorghum halepense, trilobated leaf potato, seven pawl dragons, Egyptian grass, Brachiaralata, zygostyle spend flowering shrubs), upright punarnava, Aspilia africana, Aneilima beniniense, tool Involucre bud thatch, Guyana bluestem grass, Paspalum conjugatum, Herba Paspali orbicularis, nakedflower murdannia herb, yard grass, green bristlegrass half lotus branch, great Ye green bristlegrass, Triumfetta cordifolia, blue butterfly ape tail tree, scorpion tail beggarweed, Herba Gomphrenae celosioidis, Tephrosia bracteolata, thorn bud Fruit, bee saage, Cenchrus biflorus, Rose Mallow Root, Mongolian ringdove chrysanthemum, sweet vernal grass and Cuscuta australis.
11. a kind of method, is used for：
Undesired plant growth is prevented,
And/or
The noxious plant in root crop plant is prevented,
And/or
The plant growth in root tuber crop plants is adjusted,
The method includes following step：By aclonifen, Herbicidal combination or the group of the definition of any one of such as claim 1 to 5 It closes object and is applied to root crop plant, the position of root crop plant, the seed of root crop plant, root crop plant growth Region or be intended to make the region of root crop plant growth.
12. method according to claim 11, wherein the root crop plant is selected from sweet potato, cassava and Chinese yam (in Dioscorea Plant species).
13. according to the method for claim 11 or 12, wherein the root crop plant is cassava.
14. according to the method for any one of claim 11 or 13, wherein the one of prevention any one of such as claim 7 to 10 definition Kind, several or whole noxious plants.
15. according to the method for claim 11 or any one of 14, wherein the root crop plant is by genetic modification, preferably The root crop plant is genetically modified plants or is obtained by mutation/selection.
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