CN1207018A - Herbicidal composition and method of weed control - Google Patents

Abstract

The invention relates to a herbicidal composition, comprising a compound of formula (I) and a compound of formula (II) and/or of formula (III) or an agriculturally acceptable salt of the compound of formula (II) and/or (III) in admixture.

Description

Herbicidal combinations and control method for weed

The present invention relates to a kind of herbicide composition, its combination contains and is suitable in raise crop, be typically cereal class, rape, sugar beet, sugar with crop such as sugarcane, plantation, paddy rice, cotton and preferred in corn and soybean crops the weed killer herbicides of Selective Control weeds.

The invention still further relates to a kind of control method for weed and application in this respect of described new compositions in raise crop.

The following formula I compound has herbicide effect.This is especially open in EP-A-0 273 417.

Following formula II and III compound with and agricultural go up acceptable salt, especially alkali metal salt, ammonium salt and amine salt also are known as weed killer herbicide (careless ammonium phosphine and glyphosate) and especially are described in " agricultural chemicals handbook (The Pesticide Handbook), the tenth edition, 1994, Crop ProtectionPublications, and they are also on sale in market.

With

Surprisingly, one of above-mentioned weed killer herbicide that has now found that formula I reactive compound and formula II and/or III demonstrates herbicidal effect with the variable proportion combination, can control the most of weeds that especially in raise crop, occur in the preceding and preferred back of emerging of emerging, and significantly not damage cultivated plant.

Therefore, the invention provides a kind of new compositions that is used for the Selective Control weeds, it comprises formula I compound as active component with form of mixtures

With formula II compound

And/or formula III compound

Or acceptable salt on the agricultural of formula II and/or III compound.

The suitable salify body that is used for formula II and III compound is an amine, ammonium hydroxide and alkali metal hydroxide and alkaline earth metal hydroxide.

The illustrative examples that is suitable for the amine of salify is primary, the second month in a season and uncle's aliphatic series and aromatic amine, is typically methylamine, ethamine, propylamine, isopropylamine, the butylamine of four kinds of isomeries, dimethylamine, diethylamine, diethanol amine, di-n-propylamine, diisopropylamine, di-n-butylamine, pyrrolidines, piperidines, morpholine, trimethylamine, triethylamine, tripropyl amine (TPA), quinuclidine, pyridine, quinoline and isoquinolin, especially ethamine, propylamine, diethylamine or triethylamine, preferred isopropylamine and diethanol amine.

The representative instance of quaternary ammonium base is generally halogen ammonium salt cation, is typically the tetramethylammonium cation, benzyl trimethyl ammonium cation, triethyl group benzyl ammonium cation, tetraethylammonium cation, trimethyl ethyl ammonium cation and ammonium cation.

This herbicide composition is used in the raise crop, especially controls important weeds on many kind agriculturals in corn and soybean crops, comprises Veronica, Bedstraw, papaver, Solanum, Chenopodium, Amaranthus, Xanthium, abutilon, Ambrosia, arrowhead belongs to, Ipomoea, Cassia tora (Cassiastora), datura, Sesbania exaltata and Sida spinosa.

This new compositions be suitable for be useful on standard application process in the agricultural, be typically and use before emerging, use after emerging and dress seed, optimize postemergence application.

This herbicide composition preferably is applicable to raise crop, is typically cereal class, rape, sugar beet, sugar with sugarcane, plantation, paddy rice, controls weeds in cotton and preferred corn and the soybean crops.

Crop is interpreted as the crop that refers to that also those have had tolerance by conventional breeding and gene engineering method to weed killer herbicide or combinations of herbicides, the crop that glyphosate or careless ammonium phosphine are had tolerance for example, especially soybean and the corn crop that careless ammonium phosphine and glyphosate are had tolerance.

The raise crop that formula II and/or III component is had tolerance is preferably made by the bioprocess technology method.Prepare this class to formula II and/method that the formula III compound has a plant of tolerance is described in detail in International Application No. WO 86/02097 and WO 87/05627, European application EP-A-242236, EP-A-242 246, EP-A-257 542 and EP-A-275957 and US-A-5 188 642 constitute a part of the present invention among US-A-4 971 908 and the US-A-5 145783 (EPSP synthase) and as reference.

This herbicide composition comprises formula I compound and formula II and/or formula III compound with any mixing ratio, and a kind of component surpasses another component usually.Preferred mixing ratio between formula I compound and formula II and/or the III component is generally 1: 20-1: 5.

This new compositions preferably comprises formula I compound and formula II or III compound.

Amount of application can change in wide range, and depends on soil property, and (after emerging preceding or emerging, seed dressing imposes on and retouches ditch to use type; Non-cultivating used etc.), cultivated plant, weeds to be controlled, corresponding popular weather conditions; And by other factors of using type, time of application and target crop control.This herbicide composition usually can 250-2500g/ha, and the amount of application of preferred 500-1000g/ha is used.

Formula I compound and formula II and/or the weight ratio of III compound in this new formulation are 1: 100-1: 0.001.

The Herbicidal combinations of the weed killer herbicide of formula I compound and formula II and/or III can unmodified form use, promptly use with the synthetic form that obtains, but preferably they are processed into directly sprayable or dilutable solution in a usual manner with auxiliary agent commonly used in the formula technique, dilute emulsion, wetting powder, soluble powder, pulvis, granule or microcapsules.The same with types of compositions, according to the purpose that is intended to and popular situation select application process such as spraying, atomizing, dusting, wetting, scatter or pour.

Preparation, promptly contain formula I and II and/or III compound and usually the composition of one or more solids or liquid dosage auxiliary agent prepare by known way, for example evenly mix and/or grind weed killer herbicide and described formulation aid, be generally solvent or solid-state carrier.In addition, also surface active cpd (surfactant) can be used to prepare preparation.

Suitable solvent is typically: aromatic hydrocarbons, preferred C ₈-C ₁₂Cut as alkylbenzene mixture, is generally xylene mixture or alkylated naphthalene; Aliphatic series or cycloaliphatic hydrocarbon, as paraffin, cyclohexane or tetrahydronaphthalene; Pure as ethanol, propyl alcohol or butanols; Glycol and ether thereof and ester are as propane diols or dipropylene glycol; Ketone such as cyclohexanone, isophorone or diacetone alcohol; Intensive polar solvent such as N-N-methyl-2-2-pyrrolidone N-, methyl-sulfoxide or water; Vegetable oil and ester thereof, as rapeseed oil, castor oil or soybean oil; And also has silicone oil in some cases.

But the solid-state carrier that is usually used in pulvis and dispersion powder is generally the natural minerals filler, as calcite, and talcum, kaolin, imvite or Attagel.For improving physical property, also can add the silicic acid of high degree of dispersion or the adsorbability polymer of high degree of dispersion.Suitable granular adsorptive support is a porous type, comprises float stone, brickbat, sepiolite or bentonite; And suitable non-adsorptive support is the material such as calcite or sand.In addition, can use inorganic or organic material, especially dolomite or the efflorescence plant residue of a lot of pre-granulations.

Depend on formula I type of compounds to be prepared, suitable surface active cpd is a nonionic, the surfactant of cationic and/or anionic property, and they have good emulsifying, dispersion and wettability.Surfactant also is understood to include surfactant mixture.

Suitable anion surfactant can be water-soluble soap and water-soluble synthetic surface reactive compound.

Suitable soap is higher fatty acid (C ₁₀-C ₂₂) or alkali metal salt, alkali salt, ammonium salt or the substituted ammonium salt of the natural acid mixture that especially can obtain from cocoa butter or fatty oil, for example oleic acid or stearic sodium or sylvite.Other suitable soaps also have fatty acid methyl taurate (fatty acid methyl taurin salts).

Yet the so-called synthetic surfactant of more normal use, especially fatty sulfonate, fat sulphate, sulphonated benzimidazole derivative or alkylaryl sulfonates.

Fatty alcohol sulfonate or sulphate often are alkali metal salt, alkali salt, ammonium salt or substituted ammonium salt form, and they contain C ₈-C ₂₂Alkyl (moieties that also comprises acyl group), for example sodium of lignosulphonic acid or calcium salt, the sodium of dodecyl sulphate or calcium salt, or the sodium or the calcium salt of the fatty alcohol sulphuric acid admixture that obtains by natural acid.These compounds also comprise the salt of sulphation or sulfonated aliphatic alcohol/ethylene oxide adduct.Sulphonated benzimidazole derivative preferably contains 2 sulfonic groups and 1 C ₈-C ₂₂Fatty acid group.The illustrative example of alkylaryl sulfonates is sodium, calcium or the triethanolamine salt of the condensation product of DBSA, dibutyl naphthalene sulfonic acids or naphthalene sulfonic acids and formaldehyde.

Corresponding phosphate, the salt or the phosphatide that are typically the phosphate of the adduct of nonyl phenol and 4-14mol oxirane also are suitable.

Non-ionic surface active agent is preferably the polyglycol ether derivative of aliphatic series or cycloaliphatic alcohol, or polyglycol ether derivative saturated or unsaturated fatty acid and alkyl phenol, described derivative contains 3-30 ethylene glycol ether group and partly contains 8-20 carbon atom at (aliphatic series) hydrocarbon, and contains 6-18 carbon atom at the moieties of alkyl phenol.

Other suitable non-ionic surface active agents are polyoxyethylene and polypropylene glycol, the amino polypropylene glycol of ethylene and the water-soluble poly adduct (polyadduct) that contains the alkyl polypropylene glycol of 1-10 carbon atom in alkyl chain, and polyadduct contains 20-250 ethylene glycol ether group and 10-100 propylene glycol group.These compounds contain 1-5 ethylene glycol unit/propane diols unit usually.

The illustrative example of non-ionic surface active agent is the nonyl phenol polyethoxylate, GREMAPHOR GS32, polyoxypropylene and polyoxyethylated polyadduct, tributyl phenol polyethoxylate, polyethylene glycol and octylphenol polyethylene ethoxylate.

The fatty acid ester of polyoxyethylene sorbitan also is suitable non-ionic surface active agent, is typically the polyethenoxy sorbitan trioleate.

Cationic surfactant is preferably and has at least one C ₈-C ₂₂Alkyl is made low alkyl group, benzyl or the hydroxy lower alkyl of N-substituting group and arbitrariness halogenation and is made other substituent quaternary ammonium salts.These salt are preferably halide, Methylsulfate or ethyl sulfuric acid salt form, for example stearyl trimethyl ammonium chloride, or benzyl two (2-chloroethyl) ethyl ammonium bromide.

Be usually used in surfactant in the formulation art especially at " Mc Cutcheon washing agent and emulsifier yearbook (Mc Cutcheon ' s Detergents and Emulsifiers Annual) " (McPublishing Corp., Ridgewood, New Jersey, 1981), " Tensid-Taschenbuch " of H.Stache (surfactant handbook) (Carl Hanser Verlag, Munich/Vienna, 1981) and M. and J.Ash " surfactant complete works (Encyclopediaof Surfactants) ", Vol I-III (Chemical Publishing Co., New York has explanation in 1980-81).

Herbicidal combinations contains 0.1-99wt% usually, preferred 0.1-95wt% formula I compound and formula II and/or III combination of compounds, the solid-state or liquid flux of 1-99.9wt%, and 0-25wt%, the surfactant of preferred 0.1-25wt%.

Although preferably commercial product is made into concentrate, the end user uses the dilution preparation usually.

Preparation also can contain other compositions such as stabilizing agent, vegetable oil or epoxidized vegetable oil (epoxidation cocoa butter, rapeseed oil or soybean oil), and defoamer is typically silicone oil, preservative, viscosity modifier, adhesive, tackifier and fertilizer or other chemical reagent.

Especially preferred preparation is pressed following preparation (in full, percentage is by weight): But emulsifying concentrated solution:Weeding combination 1-90%, preferred 5-20% surfactant 1-30%, preferred 10-20% liquid carrier 5-94%, preferred 70-85% pulvis: weeding combination 0.1-10%, preferred 0.1-5% solid-state carrier 99.9-90%, preferred 99.9-99% suspending concentrate weeding combination 5-75%, preferred 10-50% water 94-24%, preferred 88-30% surfactant 1-40%, preferred 2-30% Wetting powderWeeding combination 0.5-90%, preferred 1-80% surfactant 0.5-20%, preferred 1-15% solid-state carrier 5-95%, preferred 15-90% GranuleWeeding combination 0.1-30%, preferred 0.1-15% solid-state carrier 99.5-70%, preferred 97-85%

Following examples explanation the present invention, but do not limit the present invention.

Formulation Example:

Formula I and II and/III combination of compounds (in full in percentage by weight) But emulsifying concentrated solution F1.A) b) c) d) combination of formula I compound and formula II and/or III herbicide 5% 10% 25% 50% calcium dodecyl benzene sulfonates 6% 8% 6% 8% GREMAPHOR GS32 4%-4% 4% (36mol EO) octylphenol polyethylene ethoxylate-4%-2% (7-8mol EO) cyclohexanone--10% 20%C₉-C ₁₂Aromatic hydrocarbons mixture 85% 78% 55% 16%

The emulsion that can prepare any desired concn by this concentrate of dilute with water. F2. solutionA) d c b))) combination of formula I compound and formula II and/or III weed killer herbicide 5% 10% 50% 90%1-methoxyl group-3-(3-methoxy propoxyl group) propane-20% 20%-PEG400s 20% 10%--N-N-methyl-2-2-pyrrolidone N---30% 10%C ₉-C ₁₂Aromatic hydrocarbons mixture 75% 60%--

This solution is suitable for use as droplet. F3. wetting powderA) b) c) d) silica of the combination of formula I compound and formula II and/or III herbicide 5% 25% 50% 80% sodium lignosulfonate 4%-3%-NaLS 2% 3%-4% diisobutyl sodium naphthalene sulfonates-6% 5% 6% octylphenol polyethylene ethoxylate-1% 2%-(7-8mol EO) high degree of dispersion 1% 3% 5% 10% kaolin 88% 62% 35%-

Compound mixture is thoroughly mixed with auxiliary agent, in suitable grinding machine, grind this mixture, obtain dilutable water and obtain the wetting powder of the suspension of any desired concn. F4. coated granuleA) c b)) silica of the combination of formula I compound and formula II and/or III weed killer herbicide 0.1% 5% 15% high degree of dispersion 0.9% 2% 2% inorganic carriers (φ 0.1-1mm) 99.0% 93% 83% are as CaCO ₃Or SiO ₂

Compound mixture is dissolved in carrene, is sprayed onto solution on the carrier and under vacuum, removes and desolvate. F5. coated granuleA) c b)) silica of the combination of formula I compound and formula II and/or III weed killer herbicide 0.1% 5% 15% Macrogol 200s 1.0% 2% 3% high degree of dispersion 0.9% 1% 2% inorganic carriers (φ 0.1-1mm) 98.0% 92% 80% are as CaCO ₃Or SiO ₂

Compound mixture in small, broken bits is evenly imposed in mixer on the wetting kaolin of polyethylene glycol.Obtain dustless coated granule in this way. F6. extrude granuleA) d c b))) combination of formula I compound and formula II and/or III weed killer herbicide 0.1% 3% 5% 15% sodium lignosulfonates 1.5% 2% 3% 4% carboxymethyl celluloses 1.4% 2% 2% 2% kaolin 97.0% 93% 90% 79%

Compound mixture mixed with auxiliary agent and with the mixture water-wet.Extrude this mixture, dry in air flow then. F7. pulvisA) c b)) combination of formula I compound and formula II and/or III weed killer herbicide 0.1% 1% 5% talcums 39.9% 49% 35% kaolin 60.0% 50% 60%

Obtain instant available pulvis by mixing cpd mixture and carrier on suitable grinding machine. F8. suspending concentrateA) b) c) d) combination of formula I compound and formula II and/or III herbicide 3% 10% 25% 50% ethylene glycol 5% 5% 5% 5% nonyl phenol polyethoxylate (15mol EO)-1% 2%-sodium lignosulfonates 3% 3% 4% 5% carboxymethyl celluloses 1% 1% 1% 1%37% formalins 0.2% 0.2% 0.2% 0.2% silicone oil emulsions 0.8% 0.8% 0.8% 0.8% water 87% 79% 62% 38%

Compound mixture in small, broken bits is evenly mixed with auxiliary agent, obtain suspending concentrate, can prepare the suspension of any desired concn by dilute with water by it.

Usually more advantageously prepare the component of compound and formula II and/or the III of formula I separately, and only before using, in applicator, mix them with the mixed thing form of bucket in water immediately with required mixing ratio.

Biological Examples:

Embodiment B 1: the back test of emerging

In the greenhouse, plantation unifacial leaf and dicotyledonous test plant in the plastic basin of band standard soil.Use in 4 to 6 leaf stages that (dosage of 500l water/ha) is sprayed to it with 2000g a.i./ha by the aqueous suspension of the substances of 25% wetting powder (embodiment F 3, b)) preparation.And then under optimum condition in the greenhouse culture experiment plant.In about 18 days experimental period post-evaluation test (100%=thoroughly damages, and 0%=does not have effect).The evaluation of estimate of 100-70% (especially 100-80%) shows good in excellent herbicide effect.

This new compositions shows strong herbicide effect in this test.By having obtained identical result with F4-F8 preparation new compositions by embodiment F 1-F2.

Claims (11)

1. Herbicidal combinations, it comprises formula I compound with form of mixtures With formula II compound And/or formula III compound

Or acceptable salt on the agricultural of formula II and/or III compound.

2. according to the Herbicidal combinations of claim 1, comprise formula I compound and formula II or III compound.

3. according to the Herbicidal combinations of claim 1, the weight ratio of its Chinese style I compound and formula II and/or III compound is 1: 100 to 1: 0.001.

4. the method for the undesirable plant growing of control in cultivated plant comprises the described plant of the desired compositions-treated of claim 1 or its growth place with herbicidally effective amount.

5. according to the method for claim 4, wherein carrying the cultivation thing is the cereal class, rape, and sugar beet, sugar is used sugarcane, plantation, paddy rice, cotton, corn or soybean.

6. according to the method for claim 5, wherein cultivated plant is corn or soybean.

7. according to the method for claim 4, comprise with composition required for protection and handle cultivated plant with amount of application corresponding to 0.25-2.5kg gross activity composition/ha.

8. according to the method for claim 4, be used in the undesirable plant growing of back control of emerging of corn and soybean crops.

Effective dose according to the composition of claim 1 cereal class, rape, sugar beet, sugar with sugarcane, plantation, paddy rice, cotton, corn and soybean crops in the purposes of Selective Control weeds.

10. the purposes of control weeds after optionally emerging in corn and soybean crops according to the effective dose composition of claim 9.

11. the method for the undesirable plant growing of control in the cultivated plant that formula II and/or III compound is had tolerance comprises the described plant of the desired compositions-treated of claim 1 or its growth place with herbicidally effective amount.