CN104872147B - Weeding composition containing pentoxazone and mefenacet - Google Patents
Weeding composition containing pentoxazone and mefenacet Download PDFInfo
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- CN104872147B CN104872147B CN201510349893.5A CN201510349893A CN104872147B CN 104872147 B CN104872147 B CN 104872147B CN 201510349893 A CN201510349893 A CN 201510349893A CN 104872147 B CN104872147 B CN 104872147B
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Abstract
The invention discloses a weeding composition containing pentoxazone and mefenacet and an application of the weeding composition. The weeding composition is composed of first active ingredients, namely, oxaziclomefone, second active ingredients, namely, mefenacet, and promoters, wherein the weight ratio of the first active ingredients to the second active ingredients is 0.1-100 to 10-120. Water suspension, dispersible oil suspension, wettable powder, water dispersible granules and granules which are agriculturally allowable can be prepared from the weeding composition. The weeding composition is reasonable in component, good in weeding effect and low in pesticide cost, activity and the weeding effect of the weeding composition are not obtained by simply overlapping activity of all the components, and compared with an existing single preparation, besides the remarkable weeding effect, the weeding composition has the remarkable synergism, is high in safety and meets the safety requirement for pesticide preparations. The weeding composition is used for early-stage weed killing processing of rice transplantation fields, direct seeding fields and the like, and has high biological activity for weeds in rice fields.
Description
Technical field
The present invention relates to a kind of Herbicidal composition for rice field, by active component ring penta oxadiazon and mefenacet and auxiliary agent
Composition, belongs to technical field of compounded pesticide.
Background technology
Ring penta oxadiazon, English name pentoxazone, trade name Wechser, Kusabue, Shokinel, Kusa
Punch, The One, Starbo, Utopia, chemical name: 3-(4-chloro-5-cyclopentyloxy-2-fluorophenyl)-5-isopropyl alkene-
1,3-azoles-2,4-diketone, belong to oxazoline dione herbicides.The mechanism of action be suppression chlcrophyll biosynthesis during former
The oxidasic activity of porphyrinogen ix, is proporphyrinogen oxidase inhibitor.Protoporphyrin IX in the presence of light, the nascent state of generation
The lipid of the raw body film component of oxygen oxidation Decomposition, occurs the destruction (peroxidation) of film, the chlorophyll of photosynthetic pigment and class recklessly
Radix Raphani element escapes, and plant is the most withered.Ring penta oxadiazon has strong adsorption by soil and low water-soluble, pacifies Oryza sativa L.
Full property is high, can use, prevent and kill off barnyard grass, broad leaved weed, dried tuber in any period before rice transplanting, after rice transplanting or when planting
Etc. multiple annual and perennial weeds.The highest in weeds 0 leaf phase activity, weed size becomes big, and dosage increases.
Mefenacet, is again Herba Dendrobii amine, English name mefenacet, chemical name: 2-[4-morpholinodithio-2-base oxygen-N-first
Base acetanilide.It is a kind of selectivity inner-adsorption conduction-type herbicide, main by bud scale and root absorption, through xylem and phloem
Conduct the plumelet to weeds and tender leaf, stop the elongation of weed growth point cell division, ultimately cause plant dead.When grass family is miscellaneous
Grass (barnyard grass) is quickly gathered at growing point after contacting this medicine, can effectively prevent and kill off grassy weed, to barnyard grass in rudiment to 2 leaf phases
There is specially good effect, to Semen Euphorbiae, Herba Eleocharitis acicularis, Herba Euphorbiae Helioscopiae, Herba monochoriae vaginalis, mexicana, abnormity dried tuber, flat dried tuber, cyperus iria and the most aquatic
Dried tuber also has certain preventive effect.But exist and be used alone cost height, be unfavorable for that spread uses, part broad leaved weed is prevented
Imitate poor.
Ring penta oxadiazon and mefenacet all differ in chemical classes and the mechanism of action, at preventing and treating paddy field weed
Upper widely different.By literature search, the relevant report that ring penta oxadiazon and mefenacet are compounding the most not yet it is found to have.Invention
People, through the screening of substantial amounts of formula indoor and field control effectiveness test, finds ring penta oxadiazon and mefenacet in certain limit
Inside carry out compounding after, the weeds in early days such as transplanted rice field, live field are closed down high treating effect, miscellaneous to rice terrace barnyard grass, broad-leaved
Grass and sedge weed etc. are annual and perennial weeds has obvious potentiation, it is possible to decrease use cost, delaying drug resistance,
High to crop safety.
Summary of the invention
It is an object of the invention to provide a kind of component reasonable, potentiation is notable, and herbicidal effect is good, and drug cost is low,
Energy delaying drug resistance, and the Herbicidal combinations to rice safety.
Another object of the present invention is to provide containing ring penta oxadiazon and the Herbicidal combinations preparation agent of mefenacet
Type.
It is still another object of the present invention to provide above-mentioned composition in the application preventing and kill off on paddy field weed.
In order to overcome the defect of existing unitary agent, the technical scheme is that so solution, a kind of containing ring penta
Oxadiazon and the Herbicidal combinations of mefenacet, it is characterised in that including:
A) the first active component ring penta oxadiazon；
B) the second active component mefenacet；
The weight ratio of the first active component and the second active component is (0.1～100): (10～120), be preferably (0.2～
70): (15～80).
The Herbicidal combinations of ring penta oxadiazon of the present invention and mefenacet is according to well known to those skilled in the art of the present technique
The preparation formulation that can prepare of method be aqueous suspension agent, dispersible oil-suspending agent, wettable powder, water dispersible granules, granule
Agent.
To aqueous suspension agent, spendable auxiliary agent has: emulsifying agent such as calcium dodecyl benzene sulfonate (agriculture breast 500#), agriculture breast
700#, agriculture breast 2201, this dish-60#, emulsifying agent T-60(common name: anhydrous sorbitol single-hard ester acid ester polyoxyethylene ether), TX-
10(common name: octyl phenol polyoxyethylene (10) ether), agriculture breast 1601#, agriculture breast 600#, agriculture breast 400#；Dispersant such as polycarboxylate,
One or more in lignosulfonates, alkylnaphthalene sulfonate；Wetting agent such as alkyl sulfate, alkylsulfonate, LOMAR PWA EINECS 246-676-2
One or more in salt；One or many in antifreezing agent such as ethylene glycol, propylene glycol, glycerol, carbamide, inorganic salts such as sodium chloride
Kind；In thickening agent such as white carbon, polyvinyl alcohol, bentonite, aluminium-magnesium silicate one or more；Defoamer is as such as silicone oil, silicone
One or more in compound, C10-20 saturated fat acid compounds, C8-10 aliphatic alcohols, hexanol, butanol, capryl alcohol；Collapse
Solve one or more in agent such as ammonium sulfate, carbamide, sucrose, glucose；Stabilizer such as triphenyl phosphite, epoxychloropropane, vinegar
Acid anhydride.
To dispersibling oil-suspending agent, spendable auxiliary agent has: dispersant such as polycarboxylate, lignosulfonates, alkylnaphthalene
Sulfonate (dispersing agent NNO), Huntsman Corporation of TERSPERSE 2020(U.S. HUNTSMAN produce, alkyl naphthalene sulfonic acid salt) in
One or more；Emulsifying agent such as BY(castor oil polyoxyethylene ether) series emulsifying agent (BY-110, BY-125, BY-140), agriculture breast
700#(common name: alkyl phenol formaldehyde resin polyoxyethylene ether), agriculture breast 2201, this dish-60#(common name: sorbitol anhydride list is stearic
Acid esters), Tween-60 #(common name: sorbitan monostearate polyoxyethylene ether), agriculture breast 1601#(common name: phenethyl
Phenol polyoxyethylene poly-oxygen propylene aether), Huntsman Corporation of the TERSPERSE 4894(U.S. produces) in one or more；Moistening
Agent such as alkylphenol-polyethenoxy base ether formaldehyde condensation products sulfate, alkylphenol polyoxyethylene phosphate ester, phenethyl phenol polyoxy second
Alkene ether phosphate ester, alkyl sulfate, alkylsulfonate, naphthalene sulfonate, Huntsman Corporation of the TERSPERSE 2500(U.S. go out
Product) in one or more；In thickening agent such as white carbon, polyvinyl alcohol, bentonite, aluminium-magnesium silicate one or more；Antifreezing agent is such as
In ethylene glycol, propylene glycol, glycerol, carbamide, inorganic salts such as sodium chloride one or more；Disperse medium such as soybean oil, Oleum Brassicae campestris,
Oleum Gossypii semen, Oryza sativa L. oil, Oleum Ricini, Petiolus Trachycarpi oil, epoxy soybean oil, methyl oleate and esterification oils, diesel oil, machine oil, mineral
In oil, and esters solvent such as dimethyl phthalate, dibutyl phthalate, ethyl acetate, essence of Niobe a kind of or
Multiple.
To wettable powder, spendable auxiliary agent has: dispersant such as polycarboxylate, lignosulfonates, polyoxyethylene gather
Oxypropylene group ether block copolymers, alkyl naphthalene formaldehyde condensate sulfonates, alkylphenol-polyethenoxy base ether phosphate, poly alkyl alcohol
In oxygen vinyl Ether phosphate ester, alkylphenol-polyethenoxy base ether sulfonate one or more；Wetting agent such as alkyl sulfate, alkyl sulphur
In hydrochlorate, naphthalene sulfonate one or more；Filler such as ammonium sulfate, carbamide, sucrose, glucose, kieselguhr, Kaolin, white carbon,
Fine particle calcium carbonate, Pulvis Talci, attapulgite, potter's clay one or more.
To water dispersible granules, spendable auxiliary agent has: dispersant such as polycarboxylate, lignosulfonates, alkyl naphthalene sulfonic acid
In salt one or more；In wetting agent such as alkyl sulfate, alkylsulfonate, naphthalene sulfonate one or more；Disintegrating agent such as sulfur
In acid ammonium, sodium sulfate, polyvinylpyrrolidone, starch and derivant, bentonite one or more；Binding agent such as starch, Portugal
One or more in grape sugar, polyvinyl alcohol (PVA), Polyethylene Glycol, sodium carboxymethyl cellulose, sucrose；Filler such as kieselguhr, height
Ridge soil, white carbon, fine particle calcium carbonate, Pulvis Talci, attapulgite, potter's clay one or more.
To granule, spendable auxiliary agent has: carrier such as clay, Kaolin, Talcum, calcium carbonate, corn starch, aluminium silicate
In one or more；One or more in dispersant such as polycarboxylate, lignosulfonates, alkylnaphthalene sulfonate；Moistening
One or more in agent such as alkyl sulfate, alkylsulfonate, naphthalene sulfonate；Binding agent such as polyvinyl alcohol, dextrin, polyethylene
One or more in ketopyrrolidine.
Instant component is reasonable, and preventive effect is better than activity when each component is administered alone, and has potentiation, expands weeds and prevents
Controlling spectrum, reduce spraying times, reduce cost accounting, delaying drug resistance, good to crop safety, the safety meeting pesticidal preparations is wanted
Ask.The present invention can be used for the weeds in early days such as transplanted rice field, live field and closes down process, to rice terrace barnyard grass, broad leaved weed and Sha
Grass section weeds etc. are annual and perennial weeds has significant prevention effect.
Detailed description of the invention
Illustrate that to paddy field weed whether ring penta oxadiazon and mefenacet compounding below by Toxicity Determination
There is potentiation.
In order to prevent and kill off paddy field weed, we have carried out the most compounding potentiation with ring penta oxadiazon and mefenacet and have ground
Studying carefully, test method is with reference to " People's Republic of China's agricultural industry criteria NY/T1155.3 2006 farm-chemical indoor determination examination
Test criterion herbicide third portion: active determination test soil nebulization " and " People's Republic of China's agricultural industry criteria
NY/T1155.7 2006 farm-chemical indoor determination test rule herbicide the 7th part: the synergy of mixture measures ".
Subjects be rice terrace barnyard grass (Echinochloa crusgalli), Semen Euphorbiae
(Leptochloa chinensis), Herba monochoriae vaginalis (Monochoria vaginalis), special-shaped Sha
Grass (Cyperus difformis).
Test uses the air-dried sandy loam that sieves that the content of organic matter is 2%, pH is 6.8, permeability is good.Selection is prone to training
Support, the consistent barnyard grass of period of duration, Semen Euphorbiae, Herba monochoriae vaginalis, Herba Cyperi Difformis seed, germination percentage is all more than 80%.
Test soil is quantitatively filled at the 4/5 of basin alms bowl, uses infiltrating irrigation mode bottom basin alms bowl, make soil complete wetting to full
And state.By barnyard grass, Herba monochoriae vaginalis, Semen Euphorbiae, Herba Cyperi Difformis seed uniform broadcasting in soil surface, earthing 1.0cm, sow 24h
After carry out soil spraying treatment.
Single dose and each Mixed Pharmacy arrange 5 variable concentrations gradients and (on the basis of pilot study result, join according to medicament
Than difference, Concentraton gradient arranges the most different, and rate of preventing and kill off is set by geometric progression in the range of 5%～90%).If clear water pair
According to, it is repeated 4 times.Weeds are in germination period, carry out spraying treatment from low dosage to high dose respectively.Process is trained in being placed on greenhouse
Support and observe, with infiltrating irrigation mode moisturizing bottom basin alms bowl.
Process the rear fresh weight preventive effect calculating each chemicals treatment for 21 days, by probit value and the logarithm value of series concentration of preventive effect
Between linear regression analysis, obtain the ED of each medicament50 Value, calculates the co-toxicity coefficient (CTC) of mixture, with this by the abundant method of Sun Yun
Evaluate the reagent agent activity to weeds.
The co-toxicity coefficient (CTC) >=120 of complex preparation shows as potentiation；CTC≤80 show as antagonism；80 ＜
CTC ＜ 120 shows as summation action.
Table 1 ring penta oxadiazon and the mefenacet combination Toxicity Determination to barnyard grass
Table 2 ring penta oxadiazon and the mefenacet combination Toxicity Determination to Semen Euphorbiae
Table 3 ring penta oxadiazon and the mefenacet combination Toxicity Determination to Herba monochoriae vaginalis
Table 4 ring penta oxadiazon and the mefenacet combination Toxicity Determination to Herba Cyperi Difformis
Toxicity Determination result shows: ring penta oxadiazon and mefenacet are with weight ratio for (0.1～100): (10～
120) mixed all have preferable potentiation to barnyard grass, Semen Euphorbiae, Herba monochoriae vaginalis, Herba Cyperi Difformis, and weight ratio is (0.2～70): (15
～80) time, potentiation is the most notable.
In order to the present invention is better described, below in conjunction with embodiment, present invention is described further, in formula
Percentage ratio is all weight percentage.
Example of formulations 1
Weigh 0.5% ring penta oxadiazon, 19.5% mefenacet, 2% agriculture breast 600#, 2% polycarboxylic acids sodium, 1% sodium naphthalene sulfonate,
2% glycerol, 3% bentonite, 0.5% silicone oil, 1% ammonium sulfate, 1% epoxychloropropane, deionized water adds to 100% weight portion.Above-mentioned former
Material mixing after in high speed shear, Desert Sand grinding machine sand milling, in aqueous dispersion formed high dispersive, stable suspension system, system
Obtain 20% ring penta oxadiazon mefenacet aqueous suspension agent.
Example of formulations 2
Weigh 1% ring penta oxadiazon, 14% mefenacet, 2% agriculture breast 2201,2% polycarboxylic acids sodium, 1% sodium naphthalene sulfonate, 2% the third
Glycol, 3% polyvinyl alcohol, 0.5% capryl alcohol, 1% sucrose, 1% acetic anhydride, deionized water adds to 100% weight portion.After above-mentioned raw materials mixing
Sand milling in high speed shear, Desert Sand grinding machine, forms high dispersive, stable suspension system in aqueous dispersion, prepares 15% ring penta
Oxadiazon mefenacet aqueous suspension agent.
Example of formulations 3
Weigh 2% ring penta oxadiazon, 22% mefenacet, 2% agriculture breast 2201,2% polycarboxylic acids sodium, 1% sodium naphthalene sulfonate, 2% second
Glycol, 3% aluminium-magnesium silicate, 0.5% butanol, 1% glucose, 1% epoxychloropropane, deionized water adds to 100% weight portion.Above-mentioned former
Material mixing after in high speed shear, Desert Sand grinding machine sand milling, in aqueous dispersion formed high dispersive, stable suspension system, system
Obtain 24% ring penta oxadiazon mefenacet aqueous suspension agent.
Example of formulations 4
Weigh 2.5% ring penta oxadiazon, 22.5% mefenacet, Huntsman Corporation of the 2%TERSPERSE 2020(U.S. go out
Product), 4% this dish-60#, 3% agriculture breast 1601#, 4% agriculture breast 2201#, 1% alkylphenol polyoxyethylene phosphate ester, 0.5% white carbon, 5%
Ethylene glycol, little wheat oil adds to 100% weight portion.Above-mentioned raw materials is blended, high speed shear dispersion 30min, makes with after sand mill sand milling
Obtain 25% ring penta oxadiazon mefenacet and dispersible oil-suspending agent.
Example of formulations 5
Weigh 20% ring penta oxadiazon, 10% mefenacet, 2% dispersing agent NNO, 3% Nongru-700 #, 10% BY-125,1%
Huntsman Corporation of the TERSPERSE 2500(U.S. produces), 1% aluminium-magnesium silicate, 3% propylene glycol, mineral oil adds to 100% weight portion.
Above-mentioned raw materials is blended, high speed shear dispersion 30min, with preparing 30% ring penta oxadiazon mefenacet after sand mill sand milling
Dispersible oil-suspending agent.
Example of formulations 6
Weigh 3% ring penta oxadiazon, 17% mefenacet, 2% sodium lignin sulfonate, 3% Nongru-700 #, 10% BY-110,
1% sodium naphthalene sulfonate, 1% bentonite, 3% glycerol epoxy soybean oil add to 100% weight portion.Above-mentioned raw materials is blended, and high speed shear is divided
Dissipate 30min, dispersible oil-suspending agent with preparing 20% ring penta oxadiazon mefenacet after sand mill sand milling.
Example of formulations 7
Weigh 5% ring penta oxadiazon, 40% mefenacet, 4% polyoxyethylene polyoxypropylene base ether block copolymers, 2%
Nekal BX (nekal), 2% dodecyl sodium sulfate, 3% Pulvis Talci, fine particle calcium carbonate adds to 100% weight portion.Above-mentioned
Raw material is blended, prepares 45% ring penta oxadiazon mefenacet wettable powder after comminution by gas stream.
Example of formulations 8
Weigh 30% ring penta oxadiazon, 20% mefenacet, 4% polycarboxylic acids calcium, 2% fatty alcohol-polyoxyethylene ether phosphoric acid
Ester, 2% sodium lauryl sulphate, 3% White Carbon black, kieselguhr adds to 100% weight portion.Above-mentioned raw materials is blended, after comminution by gas stream
Prepare 50% ring penta oxadiazon mefenacet wettable powder.
Example of formulations 9
Weigh 40% ring penta oxadiazon, 15% mefenacet, 5% calcium lignosulfonate, 2% alkylphenol-polyethenoxy base
Ether sulfonic acid sodium, 2% dodecylbenzene sodium sulfonate, 5% attapulgite, Kaolin adds to 100% weight portion.Above-mentioned raw materials is blended,
55% ring penta oxadiazon mefenacet wettable powder is prepared after comminution by gas stream.
Example of formulations 10
Weigh 2% ring penta oxadiazon, 38% mefenacet, 2% sodium lignin sulfonate, 2% dispersing agent NNO (alkylnaphthalene
Sulfonate and formaldehyde condensation substance), 1% Nekal BX (nekal), 1% sodium alkyl sulfonate, 1% Polyethylene Glycol, kieselguhr
Add to 100% weight portion.The method of above-mentioned raw materials frequent regulation water intaking dispersible granule i.e. mixes, ultra micro comminution by gas stream, mix, make
Grain step produces 40% ring penta oxadiazon mefenacet water dispersible granules.
Example of formulations 11
Weigh 50% ring penta oxadiazon, 15% mefenacet, 2% TERSPERSE 2700(polycarboxylate, U.S.'s Hensel
Step company produce), 2% dispersing agent NNO (alkylnaphthalene sulfonate formaldehyde condensation products), 1% Nekal BX (nekal),
1% sodium alkyl sulfonate, 1% glucose, Pulvis Talci adds to 100% weight portion.The side of above-mentioned raw materials frequent regulation water intaking dispersible granule
Method i.e. mixes, ultra micro comminution by gas stream, mixing, granulation step produce 65% ring penta oxadiazon mefenacet water dispersible granules.
Example of formulations 12
Weigh 10% ring penta oxadiazon, 60% mefenacet, 4% Negel, 2% sodium lignin sulfonate, 2%
Sodium alkyl sulfonate, 2%K-12(sodium lauryl sulphate), 3% sodium sulfate, 5% sulfur ammonium, Kaolin adds to 100% weight portion.Above-mentioned
The method of raw material frequent regulation water intaking dispersible granule i.e. mixes, ultra micro comminution by gas stream, mixing, granulation step produce 70% ring penta
Oxadiazon mefenacet water dispersible granules.
Example of formulations 13
Weigh 0.1% ring penta oxadiazon, 4.9% mefenacet, 5% Negel, 3% polycarboxylic acids sodium, 3% paste
Essence, calcium carbonate adds to 100% weight portion.Above-mentioned raw materials is mix homogeneously in mixed cylinder, through extruding, pelletize, is dried, and through sieve
Prepare 5% ring penta oxadiazon mefenacet granule step by step.
Example of formulations 14
Weigh 0.3% ring penta oxadiazon, 3.7% mefenacet, 5% sodium lignin sulfonate, 3% sodium alkyl sulfonate, 3% gather
Vinyl alcohol, clay adds to 100% weight portion.Above-mentioned raw materials is mix homogeneously in mixed cylinder, through extruding, pelletize, is dried, and warp
Screening step prepares 4% ring penta oxadiazon mefenacet granule.
Example of formulations 15
Weigh 0.5% ring penta oxadiazon, 2.5% mefenacet, 5% polycarboxylic acids sodium, 3% sodium naphthalene sulfonate, 3% polyethylene pyrrole
Pyrrolidone, Kaolin adds to 100% weight portion.Above-mentioned raw materials is mix homogeneously in mixed cylinder, through extruding, pelletize, is dried, and
Screened step prepares 3% ring penta oxadiazon mefenacet granule.
Biological Examples 1: preventing and treating paddy field weed field control effectiveness test.
Inventor has carried out example of formulations 1(20% ring penta oxadiazon benzene in 2014 in Junichiro Koizumi village of xiangtan, hunan province county
Thiophene acyl grass aqueous amine suspending agent), example of formulations 4(25% ring penta oxadiazon mefenacet dispersible oil-suspending agent), preparation real
Execute example 7(45% ring penta oxadiazon mefenacet wettable powder), example of formulations 10(40% ring penta oxadiazon benzene thiophene acyl
Grass aqueous amine dispersible granule) preventing and treating paddy field weed field control effectiveness test, demonstrate this medicament prevention effect to paddy field weed
And the safety to Oryza sativa L..
Trial crops is Oryza sativa L., and controlling object is rice terrace annual gramineous weed, broad leaved weed and dried tuber: barnyard grass
(Echinochloa crusgalli), Semen Euphorbiae (Leptochloa chinensis), duck
SHECAO (Monochoria vaginalis), Herba Cyperi Difformis (Cyperus difformis), execute
During medicine, Oryza sativa L. is broadcast latter 3 days, is in for 1 leaf 1 heart stage, and weeds are in germination period.Experimental plot physical features is smooth, and soil fertility is medium, pH value
7.1.Test medicine and dosage refer to table 5.Separately set blank, often process 4 times and repeat, every community 30, Gong28Ge community, little
The group arrangement of random district of district.Use conventional nebulization, mu dispenser liquid 45kg.
30d investigation each process weeds strain preventive effect after medicine.Investigation method is that 2 points, every some 0.25m are investigated in every community2(0.5m ×
0.5m).Drug effect computational methods are:
Wherein: CK is blank district grass alive number；PT is treatment region remaining grass number.
Paddy field weed field control effectiveness test result prevented and treated by table 5
Field test results shows, 20% ring penta oxadiazon mefenacet aqueous suspension agent, 25% ring penta oxadiazon benzene
Thiophene acyl grass amine dispersibles oil-suspending agent, 45% ring penta oxadiazon mefenacet wettable powder, 40% ring penta oxadiazon benzene
Thiophene acyl grass aqueous amine dispersible granule, has good prevention effect to paddy field weed, and after medicine, the average preventive effect of 30 days is significantly better than that
90g/L ring penta oxadiazon suspending agent 30g a.i./mu, the preventive effect of 50% mefenacet cream 30g a.i./mu.By to medicine
Significance of difference analysis in latter 30 days, it is notable that ring penta oxadiazon and mefenacet combination and other single dose process preventive effect diversity.
Security survey: after medicine, 7d, 15d estimate each process safety to rice seedlings.Observed result is, all for reagent
Agent, to paddy growth safety, occurs without the poisoning phenomenon such as chlorisis, dwarfing.
In sum, the compositions of the present invention is to use two kinds of active component compound schemes, and its activity and herbicidal effect are not
It is the simple superposition of each composition activity, compared with existing unitary agent, in addition to there is significant herbicidal effect, and has notable
Potentiation, pollution-free to crop, safety is good, meets the security requirement of pesticidal preparations.
Claims (5)
1. one kind contains ring penta oxadiazon and the Herbicidal combinations of mefenacet, it is characterised in that: by the first active component ring penta
Oxadiazon and the second active component mefenacet and auxiliary agent form, and the weight ratio of the first active component and the second active component is
(0.1～100): (10～120).
The most according to claim 1 containing ring penta oxadiazon and the Herbicidal combinations of mefenacet, it is characterised in that: first lives
The weight ratio of property composition and the second active component is (0.2～70): (15～80).
The most according to claim 1 containing ring penta oxadiazon and the Herbicidal combinations of mefenacet, it is characterised in that: described group
Compound dosage form is aqueous suspension agent, dispersible oil-suspending agent, wettable powder, water dispersible granules, granule.
The most according to claim 1, the Herbicidal combinations containing ring penta oxadiazon and mefenacet is annual at preventing and treating rice terrace
Application on grassy weed, broad leaved weed and sedge weed.
The most according to claim 4, apply, rice terrace annual gramineous weed is barnyard grass, Semen Euphorbiae, and broad leaved weed is duck
SHECAO, sedge weed is Herba Cyperi Difformis.
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| JP2008201693A (en) * | 2007-02-19 | 2008-09-04 | Bayer Cropscience Ag | Mixed herbicidal composition for paddy field |
| CN103749480B (en) * | 2014-02-12 | 2017-04-12 | 中国中化股份有限公司 | Paddy field herbicide composition and application |
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