CN103271039B - A kind of synergistic herbicidal compositions - Google Patents
A kind of synergistic herbicidal compositions Download PDFInfo
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- CN103271039B CN103271039B CN201310221509.4A CN201310221509A CN103271039B CN 103271039 B CN103271039 B CN 103271039B CN 201310221509 A CN201310221509 A CN 201310221509A CN 103271039 B CN103271039 B CN 103271039B
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Abstract
What the present invention relates to is a kind of synergistic herbicidal compositions, and said composition contains herbicidal active component pyribenzoxim and methoxone or derivatives thereof, is applicable to the weeds in selectivity control useful crop plants such as rice.Synergistic herbicidal compositions, comprise herbicidal active ingredient pyribenzoxim and methoxone or derivatives thereof, wherein the weight proportion of pyribenzoxim and methoxone or derivatives thereof is 100:1 to 1:100.The present invention also can contain safener.The present invention, by pyribenzoxim and methoxone or derivatives thereof are carried out binary built, makes obtained new compositions can effectively solve the defect being used alone pyribenzoxim, expands and compose the herbicide of weeds, delay drug-fast generation simultaneously.Once use substantially can solve paddy field weed, saving of labor, save time, laborsaving, tool is increased income to increasing production of rice simultaneously and has certain effect.The control of paddy field broad leaved weed, grassy weed and sedge weed achieves gain effect.
Description
Technical field
What the present invention relates to is a kind of synergistic herbicidal compositions, and said composition contains herbicidal active component pyribenzoxim and methoxone or derivatives thereof, is applicable to the weeds in selectivity control useful crop plants such as rice.
Background technology
Paddy rice is one of world's staple food crop, and nearly half population, comprises the population in almost whole East Asia and Southeast Asia in the world, is all food with rice, produces throughout each continent except the South Pole.Eighties of last century late period, View of World Rice annual production average out to about 4,000 hundred million kilograms, cultivated area about 1.45 hundred million hectares.Also be most important cereal crops in China paddy rice.China's rice growing face accounts for 1/4 of national cereal crops, and every year about more than 3,500 ten thousand hectares, output then accounts for over half.No matter cultivated area and output, all ranks first in China cereal crops.
The rice field of all rice workspaces of China, always has a large amount of weeds to occur.Paddy rice all has plantation in China various places, and weeds in paddy field kind is a lot, and various places are because of the factor such as weather, soil weeds kind difference.According to statistics, the weeds that national rice field can form harm have more than 200 to plant, wherein the most common, occur general, endanger and serious have more than 40 to plant.According to investigations, crop smothering area of (2 ~ 5 grades) crop smothering more than medium in national rice field reaches 1546.7 ten thousand hm
2, account for more than 46% of total cultivated area, (4 ~ 5 grades) area of wherein seriously causing harm is 3,800,000 hm
2, account for more than 11.5% of Monitoring of Paddy Rice Plant Area.Maximum with harm with barnyard grass occurring area in these weeds, also have the hazard area pole orders of severity such as difformed galingale herb, Monochoria vaginalis, flat stalk Fischer grass, moleplant seed, pondweed, Monochoria korsakowii to take second place, what various places were common also has water silk floss, duckweed, Chinese scholartree leaf duckweed, little najas marina, short arrowhead, eel grass, bent grass, Herba Cyperi Glomerati, firefly Lin, water pepper, alternanthera philoxeroides, water three-coloured amaranth, hornwort, Eclipta prostrata, Sculellaria barbata etc.
Along with the development of agricultural cience and farming techniques and the enforcement of mechanization, live field (water direct seeding and direct-sowing dry) reduces planting patterns that the is artificial and amount of lightening one's labor, but more rely on the chemical weed control in later stage; The simultaneously propagation and employment of chemical herbicide, as saving of labor, save time, enforcement that one of the strong well stimulation that reduces costs supports new mode of heavily planting.
Pyribenzoxim chemical name is O-(2; two (4, the 6-dimethoxypyridin-2-base oxygen base) benzoyl of 6-) oxime benzophenone or be O-[2,6-couples (4; 6-dimethoxy-2-pyrimidine radicals) oxygen base] benzoylbenzophenone oxime, its structural formula is
Pyribenzoxim belongs to novel oxime ester compound, is wide spectrum selective post-emergence herbicide.It is similar that mechanism of action and sulfonylurea and imidazoles stay type herbicides, all belongs to acetolactate synthestase (ALS) inhibitor.To paddy rice, common wheat, Korea lawn grass, there is activity of weeding after selectivity super-high-efficient bud, without activity of weeding before bud, for preventing and kill off the various grassy weed such as barnyard grass, large fringe amur foxtail, polygonum flaccidum and the assorted effect of drawing of broad-leaved is distinguished.
Pyribenzoxim is the broad-spectrum herbicide that can be used for transplanting rice, direct seading rice, rice transplanting paddy rice, to rice safety.Effectively can prevent and kill off the grassy weed such as barnyard grass (comprising the barnyard grass to Stam F-34, dichloro quinolinic acid and anti-acetyl-CoA carboxylase tool resistance), agrostis stolonifera, rice Leersia Sw, lady's-grass, moleplant seed, and annual sedge weed and part broad leaved weed.Pyribenzoxim is pyrimidine salicylic acid inner-adsorption conduction-type herbicide, absorb through cauline leaf, conduct in plant corpus, suppress the amino acid whose synthesis of sensitive plant, after susceptible weeds absorbs medicament, young shoot and root stop growing, the lobus cardiacus jaundice of tender tissue, whole strain is withered subsequently, annual weed 5 to 15 days, and perennial weed will grow.
Methoxone, English name 2-Methyl-4-chlorophenoxyacetic acid, chemical formula: CH3 (Cl) C6H3OCH2COOH; Methoxone is widely used for, on the crops such as paddy rice, corn, wheat, for preventing and kill off broad leaved weed, having good safety to crop.
Methoxone is phenoxy acetic acid class selectivity Uptake and translocation hormone herbicide, and Yi Weigen and leaf portion absorb and conduction, can destroy the conducting tissue of dicotyledon, make to grow and be interfered, cauline leaf distortion, basal part of stem expands thicker or cracking, and swollen splitting is gone rotten and dead.Applicable paddy rice can prevent and kill off most of sedge weed and broad leaved weed.Methoxone derivative is methoxone isopropyl acid, tetra chloro-butyric acid of dimethyl, tetra chloro-butyric acid of dimethyl butyl ester, the different monooctyl ester of methoxone, methoxone second thioesters, methoxone thioethyl ester, mcpa sodium, methoxone sylvite, methoxone isopropyl amine salt.
In actual use, pyribenzoxim is low to part perennial nutgrass flatsedge activity, is used alone rear section perennial weed for many years continuously and causes harm seriously, as flat stalk Fischer grass, needle spikesedge herb, Japanese Fischer grass etc.Need again to prevent and treat to above weeds, take a lot of work, time-consuming, effort.In addition, the speed of its weeding is comparatively slow, although can suppress the growth of weeds after dispenser, generally needs weeds after 2 weeks just can death.
Summary of the invention
The present invention seeks to, for above-mentioned weak point, to provide a kind of synergistic herbicidal compositions, pyribenzoxim, methoxone or derivatives thereof carry out composite by said composition.Disposablely can prevent and kill off all weeds in field, expand the restriction of herbicide spectrum of pyribenzoxim, methoxone derivative, improve pyribenzoxim and the methoxone derivative herbicide speed to grass family, sedge family and broad-leaved section weeds.The discovery that the present invention is surprised, the new compositions obtained achieves gain effect on the malignant weed of water prevention rice field, significantly reduces the amount of active component needed for control of weeds, and does not produce unacceptable toxicity to the phytotoxicity of crop.
In order to solve the problems of the technologies described above, the invention provides a kind of synergistic herbicidal compositions, said composition is by carrying out binary built by pyribenzoxim and methoxone or derivatives thereof, obtained composition is made to achieve gain effect in the control of paddy field broad leaved weed, grassy weed and sedge weed, especially there is special efficacy, to succession crop safety to the weeds developed immunity to drugs in Long-Time Service sulfonylureas weed killer herbicide area.
A kind of synergistic herbicidal compositions, comprise (a) pyribenzoxim and (b) methoxone or derivatives thereof of herbicidally effective amount, wherein the weight proportion of pyribenzoxim and methoxone or derivatives thereof is 100:1 to 1:100.
As a further improvement on the present invention, described two kinds of active component weight proportions are 50:1 to 1:50, are more preferably 20:1 to 1:20.
Described methoxone derivative is methoxone isopropyl acid, tetra chloro-butyric acid of dimethyl, tetra chloro-butyric acid of dimethyl butyl ester, the different monooctyl ester of methoxone, methoxone second thioesters, methoxone thioethyl ester, mcpa sodium, methoxone sylvite, methoxone isopropyl amine salt.
Described a kind of synergistic herbicidal compositions, also comprise safener, safener is selected from benoxacor, fenclorim, dichlormide, mefenpyrdiethyl, and wherein said safener is 1:100 to 20:1 relative to the mixture weight proportioning of pyribenzoxim and methoxone or derivatives thereof.
Described a kind of synergistic herbicidal compositions can be mixed with any formulation agriculturally allowed.
Described synergistic herbicidal compositions can be mixed with any formulation agriculturally allowed.Preferred liquor, wetting powder, missible oil, suspending agent, oil-suspending agent, microcapsules, microemulsion, aqueous emulsion, suspended emulsion, water dispersible granules, ZC, ultra low volume liquids, seed coat agent.
The present invention also provides a kind of synergistic herbicidal compositions, and the active compound comprising described cooperative effective quantity mixes with at least one preparation technique usual auxiliaries.
The present invention also provides the method for the undesirable plant of a kind of collaborative control, comprise described synergistic herbicidal compositions is applied to undesirable plant growth place or leaf or stem on.Described undesirable plant is grassy weed, broad leaved weed and sedge weed.As Stellaria, bean cotyledon Lepidium, Agrostis, knotgrass, Avena, setaria, Europe sinapsis alba genus, Lolium, Solanum, Brome, amur foxtail genus, Matricaria, Tong fiber crops genus, chrysanthemum harvest spp, Xanthium, Amaranthus, Chenopodium, Ipomoea, crowndaisy chrysanthemum genus, Bedstraw, Viola and Veronica.
Described undesirable plant is flat bar rattan grass, needle spikesedge herb, Japanese Fischer grass, Herba Cyperi Glomerati, cyperus iria, difformed galingale herb, barnyard grass, lady's-grass, eleusine indica, moleplant seed, green foxtail, annual bluegrass, needle spikesedge herb, firefly Lin, Monochoria vaginalis, mexicana, water starwort, dragon's tongue, cyperus iria L. rhizoma scirpi, angustifolia arrowhead herb, pondweed, clearvers, shepherd's purse, field thistle, Siberian cocklebur, the rhizome of nutgrass flatsedge, acalypha copperleaf, lamb's-quarters, thorn amaranth and branch amaranth, hold back blue dish, grass of meadow rue, kitchen garden etc.
The present invention also provides the method for the undesirable plant of a kind of collaborative control, comprises and being used under the seed of useful crop plants plant, useful crop plants or other reproductive part of useful crop plants exist by described synergistic herbicidal compositions.Wherein said useful crop plants is paddy rice, wheat, corn.
The present invention also provides the method for the undesirable plant of a kind of collaborative control, comprises pyribenzoxim, methoxone or derivatives thereof with herbicidally effective amount, and safener process useful plants, its seed of herbicide antagonism effective dose or transplant, or its cultivation area.Safener is optional from benoxacor, fenclorim, dichlormide and mefenpyrdiethyl.Cereal, cotton, soybean, sugar beet, sugar sugarcane, long-term cropping, rape, corn, rice, wheat can not considered especially by the crop of above-mentioned herbicide damage by the protection of safener benoxacor, fenclorim, dichlormide and mefenpyrdiethyl.
The combination of active principles of different agricultural chemicals is made agricultural chemicals, is current development novel pesticide and the one of preventing and treating agriculturally resistant weed effectively and efficiently mode.After the pestsides synthesis of different cultivars, usually show three kinds of type of action: summation action, synergistic effect and antagonism.But be specially which kind of effect, unpredictable, only have and just can be known by great many of experiments.Compound synergic is good formula, owing to significantly improving actual control efficiency, reduces the usage amount of agricultural chemicals, thus has delayed drug-fast generation speed widely, is the important means of integrated control disease.
The invention provides a kind of synergistic herbicidal compositions, comprise pyribenzoxim and the methoxone or derivatives thereof of herbicidally effective amount.
Above-mentioned two kinds of herbicide components weight proportions are 100:1 to 1:100.Be preferably 50:1 to 1:50, be more preferably 20:1 to 1:20.
The combination of pyribenzoxim and methoxone or derivatives thereof has exceeded the addition to controlling weeds of expecting in principle, therefore in following two, the sphere of action of two kinds of active components has particularly been widened: first, reduce the consumption of individualized compound, maintain good exposure level simultaneously; Secondly, when single material becomes invalid from the viewpoint of agricultural under low amount ranges, the present composition also can obtain high control of weeds level.Result has significantly widened weeds spectrum, adds the selectivity to useful plants crop in addition, and this is required and expectation when being not intended to excessive use active component just.The present composition, while keeping preventing and treating the weeds in useful plants well, also has larger adaptability to succession crop.
The present invention also provides a kind of synergistic herbicidal compositions, and the active compound comprising described cooperative effective quantity mixes with at least one preparation technique usual auxiliaries.
The auxiliary agent used in synergistic herbicidal compositions of the present invention comprises liquid-carrier, solid carrier, dispersant, emulsifier, stabilizing agent, antifreezing agent, thickener etc. and other is of value to the known substance that active ingredient is stablized in the formulation and drug effect plays, all various compositions that are conventional in agricultural chemicals or permission use, be not particularly limited, concrete composition and consumption are determined by simple experiment according to recipe requirements.
The liquid-carrier being applicable to preparation synergistic herbicidal compositions of the present invention comprises aromatic hydrocarbons, aliphatic hydrocarbon.Particularly suitable be polar solvent, as alcohols and their ether and ester.In addition vegetable oil and the molten fiber of methyl is also had.Meanwhile, the mixture of different liquids is also applicable.
The solid carrier being applicable to synergistic herbicidal compositions of the present invention is diatomite, Magnesiumaluminumsilicate, atlapulgite, kaolin, clay, gypsum, bentonite, white carbon, precipitated calcium carbonate, lime stone, wood chip, corn starch, soluble starch etc.
The emulsifier being applicable to preparation synergistic herbicidal compositions of the present invention can be anion and/or non-example type emulsifier, such as alkylphenol polyoxyethylene, alkylphenol-polyethenoxy polyethenoxy ether, Ben-zylphenol Polyoxyethyl Ether, polyoxyethylene fatty acid ester, polyoxyethylene aliphatic alcohol ether, polyoxyethylene fatty amine, alkyl phenol polyglycol ether etc.
The dispersant being applicable to preparation synergistic herbicidal compositions of the present invention can be alkylnaphthalene sulfonate, two (alkyl) naphthalenesulfonate formaldehyde condensation compound, naphthalene sulfonic acid-formaldehyde condensation product, alkylphenol-polyethenoxy based phosphates, alkylphenol-polyethenoxy base ether formaldehyde condensation products sulphate, alkylphenol polyoxyethylene phosphate, alkylphenol polyoxyethylene, castor oil ethylene oxide adduct, oxirane-propylene oxide block copolymer, alkylphenol polyoxyethylene formaldehyde condensation is dirty, octylphenol polyethylene oxyethylene group ether sulfate and methylcellulose.Such as sodium lignin sulfonate, calcium lignosulfonate, methyl naphthalene sulfonate formaldehyde condensate, naphthalene sulfonate formaldehyde condensation dirt, methanonaphthalene sodium sulfonate etc.
Other additive, can enumerate when preparation usually with the carboxymethyl cellulose that auxiliary agent form uses, ethylene glycol and propane diols etc.
Synergistic herbicidal compositions in the present invention can also contain colouring agent, such as inorganic pigment iron oxide, titanium oxide or Prussian blue; Organic dyestuff alizarin, azo dyes, metal phthalocyanine orchid or kiton colors etc.
Any conventional form can use composition of the present invention.The blade face Exemplary dosage forms of premix composition is:
GR: granule
WP: wetting powder
WG: water dispersibles granula
SG: soluble granule
SL: soluble concentrate
EC: missible oil
EW: emulsion, aqueous emulsion
ME: microemulsion
SC: suspending agent
CS: microcapsule suspending agent
OD: oil-based suspension
SE: suspension emulsion
FS: seed coat agent
The preferred formulation of the present invention can be liquor, wetting powder, missible oil, suspending agent, oil-suspending agent, microcapsules, microemulsion, aqueous emulsion, suspended emulsion, water dispersible granules, ZC, ultra low volume liquids, seed coat agent.
For water dispersible granules, those skilled in the art are familiar with the corresponding auxiliary agent of use and complete the present invention very much.Dispersant is selected from polycarboxylate, lignosulfonates, alkylnaphthalene sulfonate, alkylphenol polyoxyethylene, EO/PO block polyether; Wetting agent is selected from alkyl sulfate, alkylsulfonate, naphthalene sulfonate, sodium lignin sulfonate, fatty alcohol-polyoxyethylene ether, alkylphenol polyoxyethylene; Disintegrant is selected from ammonium sulfate, sodium sulphate, sodium chloride, ammonium chloride, urea, sucrose, glucose, carboxymethyl cellulose, soluble starch, polyvinylpyrrolidone; Binding agent is selected from polyvinyl alcohol, soluble starch, dextrin, xanthans, carboxymethyl (ethyl) cellulose family; Filler is selected from diatomite, kaolin, white carbon, precipitated calcium carbonate, talcum powder, attapulgite, potter's clay.
To wetting powder, spendable auxiliary agent has: dispersant is selected from polycarboxylate, lignosulfonates, alkylnaphthalene sulfonate; Wetting agent is selected from alkyl sulfate, alkylsulfonate, naphthalene sulfonate; Filler is selected from ammonium sulfate, urea, sucrose, glucose, diatomite, kaolin, white carbon, precipitated calcium carbonate, talcum powder, attapulgite, potter's clay.
To suspending agent, spendable auxiliary agent has: dispersant is selected from polycarboxylate, lignosulfonates, alkylnaphthalene sulfonate, TERSPERSE 2425 (Huntsman Corporation of the U.S. produces, alkyl naphthalene sulfonic acid salt); Emulsifier is selected from Nongru-700 # (common name: alkyl phenol formaldehyde resin polyoxyethylene ether), agriculture breast 2201, this dish-60# (common name: sorbitan monostearate), emulsifier T-60 (common name: sorbitan monostearate APEO), agriculture breast 1601# (common name: phenethyl phenol polyoxyethylene poly-oxygen propylene aether), TERSPERSE 4894 (Huntsman Corporation of U.S. product); Wetting agent is selected from alkylphenol-polyethenoxy base ether formaldehyde condensation products sulphate, alkylphenol-polyethenoxy base ether phosphate, phenethyl phenol polyethenoxy base ether phosphate, alkyl sulfate, alkylsulfonate, naphthalene sulfonate, TERSPERSE2500 (Huntsman Corporation of U.S. product); Thickener is selected from xanthans, polyvinyl alcohol, bentonite, aluminium-magnesium silicate; Preservative is selected from formaldehyde, benzoic acid, Sodium Benzoate; Defoamer is silicone based defoamer; Antifreezing agent is selected from ethylene glycol, propane diols, glycerine, urea, inorganic salts (as sodium chloride).
To dispersibling oil-suspending agent, spendable auxiliary agent has: dispersant is selected from polycarboxylate, lignosulfonates, alkylnaphthalene sulfonate (dispersing agent NNO), TERSPERSE 2425, emulsifier is selected from the serial emulsifier (BY-110 of BY (castor oil polyoxyethylene ether), BY-125, BY-140) Nongru-700 # (common name: alkyl phenol formaldehyde resin polyoxyethylene ether), agriculture breast 2201, this dish-60# (common name: sorbitan monostearate), Tween-60 # (common name: sorbitan monostearate APEO), agriculture breast 1601# (common name: phenethyl phenol polyoxyethylene poly-oxygen propylene aether), TERSPERSE4894, wetting agent is selected from alkylphenol-polyethenoxy base ether formaldehyde condensation products sulphate, alkylphenol polyoxyethylene phosphate, phenethyl phenol polyethenoxy base ether phosphate, alkyl sulfate, alkylsulfonate, naphthalene sulfonate, TERSPERSE 2500, thickener is selected from white carbon, polyvinyl alcohol, bentonite, aluminium-magnesium silicate, antifreezing agent is selected from ethylene glycol, propane diols, glycerine, urea, inorganic salts (as sodium chloride), stabilizing agent is selected from epoxidized soybean oil, epoxychloropropane, triphenyl phosphate, dispersion medium is selected from soybean oil, rapeseed oil, corn oil, methyl oleate, diesel oil, machine oil, mineral oil.
The Exemplary dosage forms being applicable to bucket mixing composition is solution, dilution emulsion, suspending agent or its mixing and pulvis.
Usually, bucket mixing composition be with solvent (as water) dilution containing different agricultural chemicals, and one or more premix compositions of optionally auxiliary agent further.
Generally, blade face bucket mixture comprises 0.1-20%, the particularly reactive compound of 0.1-15%, and 99.9%-80%, the particularly solid-state or liquid flux (comprising ratio of solvent as water) of 99.9-85%, wherein auxiliary agent can be based on bucket mixture, the surfactant of content 0-20%, particularly 0.1-15%.
The pre-mixing agent of usual foliage applying comprises 0.1-99.9%, the particularly active compound component of 1-95%, and 99.9-0.1%, the particularly solid-state or liquid flux (comprising if ratio of solvent is as water) of 99-5%, wherein auxiliary agent can be based on pre-mixing agent, the surfactant of content 0-50%, particularly 0.5-40%.
Composition through preparation of the present invention comprises 0.5-99.9%, particularly 1-95%, the advantageously active compound component of 1-50%, and 99.5-0.1%, the particularly solid of 99-5% quality or liquid adjuvants (comprising if solvent is as water), wherein said auxiliary agent (or assistant agent) can be the surfactant of 0-50%, particularly 0.5-40% based on pre-mixing agent quality.
The present invention also provides the method for the undesirable plant of a kind of collaborative control, comprise described synergistic herbicidal compositions is applied to undesirable plant growth place or leaf or stem on.Described undesirable plant is grassy weed, broad leaved weed and sedge weed.As Stellaria, bean cotyledon Lepidium, Agrostis, knotgrass, Avena, setaria, Europe sinapsis alba genus, Lolium, Solanum, Brome, amur foxtail genus, Matricaria, Tong fiber crops genus, chrysanthemum harvest spp, Xanthium, Amaranthus, Chenopodium, Ipomoea, crowndaisy chrysanthemum genus, Bedstraw, Viola and Veronica.Preferred flat bar rattan grass, needle spikesedge herb, Japanese Fischer grass, Herba Cyperi Glomerati, cyperus iria, difformed galingale herb, barnyard grass, lady's-grass, eleusine indica, moleplant seed, green foxtail, annual bluegrass, needle spikesedge herb, firefly Lin, Monochoria vaginalis, mexicana, water starwort, dragon's tongue, cyperus iria L. rhizoma scirpi, angustifolia arrowhead herb, pondweed, clearvers, shepherd's purse, field thistle, Siberian cocklebur, the rhizome of nutgrass flatsedge, acalypha copperleaf, lamb's-quarters, thorn amaranth and branch amaranth, hold back blue dish, grass of meadow rue, kitchen garden etc.
The present invention also provides the method for the undesirable plant of a kind of collaborative control, comprises and being used under the seed of useful crop plants plant, useful crop plants or other reproductive part of useful crop plants exist by synergistic herbicidal compositions.Wherein said useful crop plants is paddy rice, corn, wheat.
The present invention also provides the method for the undesirable plant of a kind of collaborative control, comprises pyribenzoxim, methoxone or derivatives thereof with herbicidally effective amount, and safener process useful plants, its seed of herbicide antagonism effective dose or transplant, or its cultivation area.Safener is optional from benoxacor, fenclorim, dichlormide and mefenpyrdiethyl.Can do not considered that cereal, cotton, soybean, sugar beet, sugar use sugarcane, long-term cropping, rape, corn and rice especially by the crop of above-mentioned herbicide damage by the protection of safener benoxacor, fenclorim, dichlormide and mefenpyrdiethyl.
Cultivation area be cultivated plant in the soil that growth or the seed of those cultivated plants have been sowed, and intend the soil of the above-mentioned cultivated plant of cultivation.
According to the application of expection, the safener being selected from benoxacor, fenclorim, dichlormide and mefenpyrdiethyl can be used for anticipating cultivated plant seed material (seed dressing or dressing are transplanted) or can prior to seeding or after mix in soil.But, also can after plant germination separately or use together with weed killer herbicide.Dimension, is not subject to the impact of herbicide application time in principle with safener process plant or seed.And, the process of plant is also carried out by using weed killer herbicide and safener (such as mixing the form of thing with bucket) simultaneously.Safener depends primarily on application process relative to the consumption of weed killer herbicide.When field processes, thing is mixed or safener is used in distribution and weed killer herbicide processes by using the bucket containing the composition of safener and weed killer herbicide, the ratio normally 100:1 to 1:20 of weed killer herbicide and safener, preferred 20:1 to 1:10. is when field processes, usually 0.001-1.0kg safener/ha is used, preferred 0.001-0.25 kg safener/ha.
The cooperative effective quantity being applicable to the combination of composition of the present invention can according to condition at that time as changes such as the kinds of weed pressure, time of application, method of application, weather, soil regime, features of terrain, target crop.In practicing, enough provide about 0.001kg/ha-1.00kg/ha, preferably the rate of application of the active component of about 0.01 kg/ha-0.075 kg/ha is suitable.
For seed dressing, usually use 0.001-10g safener/kg seed, preferred 0.05-2g safener/kg seed.If safener is used by seed soaking prior to seeding soon in liquid form, it is favourable for so using containing concentration 1-10000ppm, the preferably safener solutions of the active component of 100-1000 ppm.
In order to use conveniently, be mixed with preparation with the composition of methoxone or derivatives thereof with pyribenzoxim by being selected from benoxacor, fenclorim, the safener of dichlormide and mefenpyrdiethyl or these safeners together with auxiliary agent conventional in formulation technology.
According to formulation properties, application process can be selected from according to expection object and popular environment, as blade face, soak into, spray, dust, scattering selects.
The inventive method most preferably maybe will be used for the weeds in the region of long-term cropping for preventing and treating plant growth district.When for plant growth district, amount of application should be enough to control weed growth but can not produce serious permanent injury to crop.
Herbicidal combinations of the present invention can also can at postemergence application at preemergence application, and preferred postemergence application, particularly weed growth is early stage.Also be one of feature of the inventive method with Herbicidal combinations early time treatment before planting (particularly soil surface is used).
The present invention compared with prior art has following beneficial effect:
The combination of pyribenzoxim and methoxone or derivatives thereof has exceeded the addition to controlling weeds of expecting in principle, therefore in following two, the sphere of action of two kinds of active components has particularly been widened: first, reduce the consumption of individualized compound, maintain good exposure level simultaneously; Secondly, when single material becomes invalid from the viewpoint of agricultural under low amount ranges, the present composition also can obtain high control of weeds level.Result has significantly widened weeds spectrum, adds the selectivity to useful plants crop in addition, and this is required and expectation when being not intended to excessive use active component just.The present composition, while keeping preventing and treating the weeds in useful plants well, also has larger adaptability to succession crop.
From the following embodiments can be seen that, herbicide composition of the present invention shows good activity of weeding, and the activity of weeding of single reactive compound or binary activity of weeding more weak, the activity of combination of the present invention exceed simply adding of each single compound activity and binary combination activity and.
When the activity of weeding of active compound exceedes active sum when each reactive compound is used alone, then always there is synergy.
The present invention compared with prior art has following beneficial effect:
The invention provides a kind of synergistic herbicidal compositions, said composition is by carrying out binary built by pyribenzoxim and methoxone or derivatives thereof, obtained new compositions is made can effectively to solve the defect being used alone pyribenzoxim, there is synergistic function, expand and the herbicide of weeds is composed, delay drug-fast generation simultaneously.Once use and substantially can solve paddy field weed, saving of labor, save time, laborsaving, can the situation of partial rcsponse rural area recruitment anxiety, tool is increased income to increasing production of rice simultaneously and has certain effect.The control of paddy field broad leaved weed, grassy weed and sedge weed achieves gain effect.
Embodiment
From the following embodiments can be seen that, herbicide composition of the present invention shows good activity of weeding, and the activity of weeding of single reactive compound or binary activity of weeding more weak, the activity of combination of the present invention exceed simply adding of each single compound activity and binary combination activity and.
When the activity of weeding of active compound exceedes active sum when each reactive compound is used alone, then always there is synergy.
Embodiment 1:60% pyribenzoxim+3% methoxone sodium oil-suspending agent
Pyribenzoxim 60%
Methoxone sodium 3%
Methyl naphthalene sulfonate formaldehyde condensate 10%
Bentonite 1%
Glycerine 5%
Corn oil complements to 100%
Active component, dispersant, wetting agent and each component of the corn wet goods ratio according to formula is mixed, after grinding and/or high speed shear, obtains 60% pyribenzoxim+3% methoxone sodium oil-suspending agent.
Embodiment 2 2% pyribenzoxim+10% methoxone potassium wetting powder
Pyribenzoxim 2%
Methoxone potassium 10%
Lauryl sodium sulfate 10%
Sodium lignin sulfonate 5%
White carbon 10%
Kaolin complements to 100%
By the proportional components mixing by formula such as active component, various auxiliary agent and filler, after ultra-fine pulverizer disintegrating, namely obtain 2% pyribenzoxim+10% methoxone potassium wetting powder.
Embodiment 3 2% pyribenzoxim+60% methoxone sodium wetting powder
Pyribenzoxim 2%
Methoxone sodium 60%
Calcium dodecyl benzene sulfonate 1%
Sodium lignin sulfonate 2%
White carbon complements to 100%
By the proportional components mixing by formula such as active component, various auxiliary agent and filler, after ultra-fine pulverizer disintegrating, namely obtain 2% pyribenzoxim+60% methoxone sodium wetting powder.
Embodiment 4 5% pyribenzoxim+50% methoxone isopropyl amine salt water dispersible granules
Pyribenzoxim 5%
Methoxone isopropyl amine salt 50%
Sodium lignin sulfonate 4%
Lauryl sodium sulfate 5%
Urea 5%
Kaolin complements to 100%
Active component, dispersant, wetting agent, disintegrant and the filler ratio in formula is mixed, becomes wetting powder through air-flow crushing, then add a certain amount of water mixing extruding and make material.5% pyribenzoxim+50% methoxone isopropyl amine salt water dispersible granules is obtained after drying screening.
The different monooctyl ester missible oil of embodiment 5 50% pyribenzoxim+5% methoxone
Pyribenzoxim 50%
The different monooctyl ester 0.1% of methoxone
Ethoxylated castor oil 5%
Calcium dodecyl benzene sulfonate 3%
Dimethyl sulfoxide (DMSO) complements to 100%
Mentioned component is proportionally prepared, stirs and obtain homogeneous phase.
Embodiment 6 50% pyribenzoxim+0.5% methoxone isopropyl acid oil suspension emulsion
Pyribenzoxim 50%
Methoxone isopropyl acid 0.5%
Methyl naphthalene sulfonate formaldehyde condensate 5%
Ethoxylated castor oil 3%
Bentonite 1%
Aromatic solvent 100 20%
Soybean oil complements to 100%
Pyribenzoxim, methyl naphthalene sulfonate formaldehyde condensate are obtained pyribenzoxim oil-suspending agent after grinding and/or high speed shear; Methoxone isopropyl acid, aromatic solvent 100, ethoxylated castor oil mixing and stirring are obtained the missible oil of methoxone isopropyl acid; The methoxone isopropyl acid missible oil obtained is joined in pyribenzoxim oil-suspending agent, obtains 50% pyribenzoxim+0.5% methoxone isopropyl acid suspension emulsion.
Embodiment 7 0.5% pyribenzoxim+50% mcpa sodium wetting powder
Pyribenzoxim 0.5%
Mcpa sodium 50%
Lauryl sodium sulfate 10%
Sodium lignin sulfonate 5%
White carbon 10%
Kaolin complements to 100%
Said components is mixed in proportion, and grinds, pulverize, be prepared into wetting powder.
Embodiment 8 4% pyribenzoxim+80% tetra chloro-butyric acid of dimethyl butyl ester water dispersible granules
Pyribenzoxim 4%
Tetra chloro-butyric acid of dimethyl butyl ester 80%
MODIFIED LIGNOSULPHONATE 5%
Lauryl sodium sulfate 5%
Urea 5%
Kaolin complements to 100%
Pyribenzoxim active component, dispersant, wetting agent, disintegrant and the filler ratio in formula is mixed, becomes wetting powder through air-flow crushing; Add tetra chloro-butyric acid of dimethyl butyl ester again to mix; Add a certain amount of water mixing extruding again and make material.4% pyribenzoxim+80% tetra chloro-butyric acid of dimethyl butyl ester water dispersible granules is obtained after drying screening.
Embodiment 9 1% pyribenzoxim+50% methoxone sodium aqueous emulsion
Oil phase:
Pyribenzoxim 1%
Methyl oleate 10%
Ethoxylated castor oil 5%
Aqueous phase:
Methoxone sodium 50%
The sodium salt 1% of the naphthalene sulfonic acids-formaldehyde condensation products of sulfonation
Water complements to 100%
Pyribenzoxim is dissolved in methyl oleate, adds ethoxylated castor oil and obtain oil phase; According to the sodium salt of formula by the naphthalene sulfonic acids-formaldehyde condensation products of mcpa sodium and sulfonation, water, mix and obtain aqueous phase; Under agitation oil phase is added aqueous phase and obtain aqueous emulsion.
Embodiment 10 20% pyribenzoxim+40% methoxone sodium wetting powder
Pyribenzoxim 20%
Methoxone sodium 40%
Sodium lignin sulfonate 1%
NaLS 2%
The silicic acid 1% of high degree of dispersion
Kaolin complements to 100%
Said components is mixed in proportion, and grinds, pulverize, be prepared into wetting powder.
Embodiment 11 50% pyribenzoxim+1% methoxone sodium coated granule
Pyribenzoxim 50%
Methoxone sodium 1%
Polyethylene glycol 3%
The silicic acid 1% of high degree of dispersion
Calcium carbonate complements to 100%
In a mixer, by levigate active component even spread on the carrier soaked by polyethylene glycol.Dust-free coated granules agent can be obtained in this way.
Embodiment 12 2% pyribenzoxim+40% methoxone potassium wetting powder
Pyribenzoxim 2%
Methoxone potassium 40%
Lauryl sodium sulfate 1%
Sodium lignin sulfonate 1%
Kaolin complements to 100%
Said components is mixed in proportion, and grinds, pulverize, be prepared into wetting powder.
Embodiment 13 30% pyribenzoxim+6% mcpa sodium extrudes granule
Pyribenzoxim 5%
Methoxone sodium 30%
Sodium lignin sulfonate 4%
Carboxymethyl cellulose 2%
Kaolin complements to 100%
Active component is mixed with auxiliary agent and grinds, mixture water-wet.This mixture is extruded, then dry in the air stream.
Embodiment 14 10% pyribenzoxim++ 10% methoxone sodium seed coat agent
Pyribenzoxim 10%
Methoxone sodium 10%
Fatty alcohol-polyoxyethylene ether sulfosuccinic acid monoesters disodium 10%
MODIFIED LIGNOSULPHONATE 5%
Xanthans 1%
Bentonite 1%
Glycerine 5%
PVP-K30 1%
Water complements to 100%
Above-mentioned each component is mixed in proportion, and through sand milling, is prepared into seed coat agent.
Embodiment 15 2% pyribenzoxim+48% methoxone thioethyl ester ZC
Atlox 4913 4%
Citric acid 0.05%
Catalyzer 0.1%
Water 13%
Methoxone thioethyl ester 48%
PAPI 1.35%
Solvesso 200 10%
Atlox4913 16%
Dispersant LFH 0.3%
Defoamer 0.16%
Urea 8.4%
Pyribenzoxim 2%
Water complements to 100%
The oil phase that PAPI, methoxone thioethyl ester, Solvesso 100 are formed is added in the aqueous solution containing Atlox4913, forms emulsion.Then heat and be incubated and add catalyst reaction 2 hours under 50oC.The microcapsules of methoxone thioethyl ester is obtained after cooling.
Atlox 4913, dispersant LFH, defoamer, urea, pyribenzoxim and water mix in proportion, and through sand milling, are prepared into suspending agent.
The methoxone thioethyl ester microcapsules obtained is added in the suspending agent of pyribenzoxim, stirs and obtain 2% pyribenzoxim+48% methoxone thioethyl ester ZC.
Embodiment 16 5% pyribenzoxim+30% tetra chloro-butyric acid of dimethyl suspended emulsion
Pyribenzoxim 5%
Tetra chloro-butyric acid of dimethyl 30%
Solvesso 200 10%
Ethoxylated castor oil 4%
Fatty alcohol-polyoxyethylene ether sulfosuccinic acid monoesters disodium 5%
MODIFIED LIGNOSULPHONATE 5%
Xanthans 1%
Bentonite 1%
Glycerine 5%
Water complements to 100%
Tetra chloro-butyric acid of dimethyl is dissolved in Solvesso 200, adds ethoxylated castor oil, obtain the missible oil of tetra chloro-butyric acid of dimethyl;
By pyribenzoxim, fatty alcohol-polyoxyethylene ether sulfosuccinic acid monoesters disodium, above-mentioned each component mixes in proportion, and through sand milling, is prepared into suspending agent.
Oil phase containing tetra chloro-butyric acid of dimethyl is joined containing in pyribenzoxim suspending agent, obtains suspended emulsion.
Embodiment 17 6% pyribenzoxim+20% methoxone second thioesters missible oil
Pyribenzoxim 6%
Methoxone second thioesters 20%
Ethoxylated castor oil 5%
Calcium dodecyl benzene sulfonate 3%
Solvesso100 complements to 100%
By above-mentioned each component mixing, be stirred to and obtain transparent homogeneous phase.
Embodiment 19 20% pyribenzoxim+80% methoxone sodium
Pyribenzoxim 20%
Methoxone sodium 80%
Pyribenzoxim, methoxone sodium are proportionally mixed.
Embodiment 20 20% pyribenzoxim+60% methoxone sodium+20% benoxacor
Pyribenzoxim 20%
Methoxone sodium 60%
Benoxacor 20%
Embodiment 21 49% pyribenzoxim+50% methoxone sodium+1% fenclorim
Pyribenzoxim 49%
Methoxone sodium 50%
Fenclorim 1%
Embodiment 22 2% pyribenzoxim+2.8% methoxone sodium+95.2% dichlormide
Pyribenzoxim 2%
Methoxone sodium 2.8%
Dichlormide 95.2%
Embodiment 23 40% pyribenzoxim+58% methoxone sodium+2% mefenpyrdiethyl
Pyribenzoxim 40%
Methoxone sodium 58%
Mefenpyrdiethyl 2%
In above embodiment, proportioning is weight per distribution ratio.
biological test example
When the effect of active compound combinations exceedes the summation of the effect when each reactive compound is used separately, there is synergistic function.The predictive role of the particular combination of two kinds of reactive compounds can use so-called " Colby formula " (see S.R. Colby, " Calculating Synergistic and Antagonistic Responses of Herbicide Combinations ", Weeds 1967,15,20-22) calculate as follows: if
X is the activity when using the reactive compound A that consumption is mppm for mg/ha or concentration;
Y is the activity when using the reactive compound B that consumption is nppm for ng/ha or concentration, is expressed as the percentage accounting for untreated control;
E is when using consumption for activity during m and n g/ha or the concentration reactive compound A and B that is m and n ppm,
So
If the activity of actual observation (O) is greater than expection active (E), so said composition super add and, namely there is synergistic effect.
Inventor is by a large amount of screening tests, the different ratio of pyribenzoxim and methoxone or derivatives thereof test and preventive effect analysis have been carried out a large amount of, find in certain ratio range, the Herbicidal combinations obtained has synergistic effect, and be not only the simple addition of two kinds of medicaments, be illustrated with following biologicall test example.
test before seedling:
Under greenhouse experiment, test plant is seeded in tank.Use standard soil as cultivation matrix.In the seedling last stage, weed killer herbicide is administered to soil surface separately or as a mixture.Consumption depends on determined optium concentration under field or greenhouse experiment.In 2-4 week post-evaluation test, (100% effect=plant is completely dead; 0% effect=plant-less toxicity effect).The mixture used in this test shows than using separately good result.
test after seedling:
As long as when the effect of the combination of pyribenzoxim and methoxone or derivatives thereof is greater than the summation of effect when each active component is used respectively, just there is synergistic effect.
Field trial has on the water saturated soil of about 5cm water (saturation conditions) thereon carries out.At seedling after-stage (2-to 3-leaf phase), in the test plants using back type sprayer to be administered to separately or as a mixture by weed killer herbicide to be under water saturation soil condition.Consumption depends on determined optium concentration under field condition.In post-evaluation in 30-50 days test, (100% effect=plant is completely dead; 0% effect=plant-less toxicity effect).The mixture used in this test shows good result.
Table 1: the postemergence weed control effect containing the present composition of pyribenzoxim and methoxone sodium after dispenser when 49 days:
safety effect
Under greenhouse experiment, test plant is grown to the 4-leaf phase in plastic tank.In this stage, by independent pyribenzoxim, the composition of pyribenzoxim and safener, and the mixture of pyribenzoxim and methoxone or derivatives thereof, or pyribenzoxim is administered to test plant with the mixture of methoxone or derivatives thereof together with the material tested as safener.Use using with the aqueous solution of test substances, described solution is prepared by embodiment 18 14% pyribenzoxim+22% methoxone or derivatives thereof water dispersible granules, and per hectare uses 500 premium on currency.After using 3 weeks, use percentage to measure and evaluate weed killer herbicide to the phytotoxicity of crop as corn and cereal.100% represents that test plant is completely dead, and 0% represents plant-less toxicity effect.
Unexpected discovery, specific safener is applicable to synergistic composition of the present invention mixing.Therefore; the invention still further relates to a kind of selective herbicidal composition for the weeds in selectivity control useful plants particularly rice crops; said composition contains pyribenzoxim, methoxone or derivatives thereof; with the safener being selected from benoxacor, fenclorim, dichlormide and mefenpyrdiethyl; said composition can protect useful plants (but not weeds) to avoid the phytotoxic effects of weed killer herbicide, also relates to the application of the weeds of described composition in control useful plants crop.
Safener is selected from benoxacor, fenclorim, dichlormide, mefenpyrdiethyl, and wherein said safener is 1:100 to 20:1 relative to the mixture weight proportioning of pyribenzoxim and methoxone or derivatives thereof.
Claims (11)
1. a synergistic herbicidal compositions, comprise herbicidal active ingredient pyribenzoxim and methoxone or derivatives thereof, wherein the weight proportion of pyribenzoxim and methoxone or derivatives thereof is 100:1 to 1:100, it is characterized in that, described weed killer herbicide also comprises safener, safener is selected from benoxacor, fenclorim, dichlormide, mefenpyrdiethyl, wherein said safener is 1:100 to 20:1 relative to the mixture weight proportioning of pyribenzoxim and methoxone or derivatives thereof, described methoxone derivative is methoxone isopropyl acid, tetra chloro-butyric acid of dimethyl, tetra chloro-butyric acid of dimethyl pyridine ester, the different monooctyl ester of methoxone, methoxone second thioesters, methoxone thioethyl ester, mcpa sodium, methoxone sylvite, methoxone isopropyl amine salt.
2. Herbicidal combinations according to claim 1, is characterized in that: described two kinds of active component pyribenzoxims and methoxone or derivatives thereof weight proportion are 50:1 to 1:50.
3. synergistic herbicidal compositions according to claim 1, is characterized in that: described two kinds of active component pyribenzoxims and methoxone or derivatives thereof weight proportion are 20:1 to 1:20.
4. synergistic herbicidal compositions according to claim 1, is characterized in that: described collaborative Herbicidal combinations can be mixed with any formulation agriculturally allowed.
5. synergistic herbicidal compositions according to claim 1, it is characterized in that: the formulation of described synergistic herbicidal compositions is wetting powder, missible oil, suspending agent, oil-suspending agent, microcapsules, microemulsion, aqueous emulsion, suspended emulsion, water dispersible granules, ZC, ultra low volume liquids, seed coat agent.
6. a synergistic herbicidal compositions, is characterized in that: the synergistic herbicidal compositions comprising claim 1 mixes with at least one preparation technique usual auxiliaries.
7. a method for the undesirable plant of collaborative control, is characterized in that: comprise the growth place or leaf or stem or seed that the synergistic herbicidal compositions of claim 1 are applied to undesirable plant.
8. method according to claim 7, is characterized in that: undesirable plant is grassy weed, broad leaved weed and sedge weed.
9. method according to claim 7, is characterized in that: comprise and being used under the seed of useful crop plants plant, useful crop plants or other reproductive part of useful crop plants exist by the synergistic herbicidal compositions of claim 1.
10. method according to claim 9, is characterized in that: wherein said useful crop plants is cereal, cotton, soybean, sugar beet, sugar sugarcane, rape, corn.
11. methods according to claim 10, is characterized in that: wherein said useful crop plants is rice.
12.method according to claim 7, is characterized in that: undesirable plant is moleplant seed, barnyard grass, broadleaved herb, nutgrass flatsedge.
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| US20040171488A1 (en) * | 1999-12-03 | 2004-09-02 | Dieter Feucht | N-aryl-uracils based Herbicides |
| CN1725952A (en) * | 2002-11-21 | 2006-01-25 | 辛根塔参与股份公司 | Herbicidal composition |
| CN101420852A (en) * | 2006-04-10 | 2009-04-29 | 杜邦公司 | Herbicidal mixtures |
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