CN111919850A - Weeding composition containing acetochlor and isoxaflutole - Google Patents

Weeding composition containing acetochlor and isoxaflutole Download PDF

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Publication number
CN111919850A
CN111919850A CN202010853437.5A CN202010853437A CN111919850A CN 111919850 A CN111919850 A CN 111919850A CN 202010853437 A CN202010853437 A CN 202010853437A CN 111919850 A CN111919850 A CN 111919850A
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China
Prior art keywords
isoxaflutole
acetochlor
composition
herbicidal composition
mass ratio
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CN202010853437.5A
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Chinese (zh)
Inventor
韩曙东
任新峰
许映蓉
朱艳梅
杨煜
李璟
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Nantong Jiangshan Agrochemical And Chemicals Co ltd
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Nantong Jiangshan Agrochemical And Chemicals Co ltd
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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
    • A01N43/72—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with nitrogen atoms and oxygen or sulfur atoms as ring hetero atoms
    • A01N43/80—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with nitrogen atoms and oxygen or sulfur atoms as ring hetero atoms five-membered rings with one nitrogen atom and either one oxygen atom or one sulfur atom in positions 1,2
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N37/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids
    • A01N37/18—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing the group —CO—N<, e.g. carboxylic acid amides or imides; Thio analogues thereof
    • A01N37/26—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing the group —CO—N<, e.g. carboxylic acid amides or imides; Thio analogues thereof containing the group; Thio analogues thereof

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  • Life Sciences & Earth Sciences (AREA)
  • Agronomy & Crop Science (AREA)
  • Pest Control & Pesticides (AREA)
  • Plant Pathology (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Environmental Sciences (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Abstract

The invention discloses a weeding composition containing acetochlor and isoxaflutole, which comprises the effective active ingredients of acetochlor and isoxaflutole, wherein the mass ratio of acetochlor to isoxaflutole is (1-20): 20-1, preferably 10-20: 1, and can be made into various dosage forms with various kinds of auxiliary agents such as dispersing agent, emulsifying agent and the like. The formula of the invention has reasonable components and good weeding effect, and has good control effect on grass weeds such as crowndaisy hemp, goosefoots, green bristlegrass herb, crab grass and the like in crop fields and the like.

Description

Weeding composition containing acetochlor and isoxaflutole
Technical Field
The invention relates to a binary combination herbicide in the field of pesticides.
Background
Isoxaflutole, the english name isoxaflutole, the chemical name is 5-cyclopropyl-1, 2-oxazol-4-yl-a, a, a-trifluoro-2-methylhydrazinesulfonyl-p-toluketone. The isoxaflutole is an organic heterocyclic selective systemic pre-emergence herbicide used for soil treatment of corn fields, is a p-hydroxyphenylpyruvate dioxygenase inhibitor, namely an HPPD inhibitor, and has the advantages of broad-spectrum herbicidal activity, applicability before and after emergence of seedlings, and death after albinism of weeds. Can be kept for a long time without being decomposed during or after application, and can still play a role in weed control when being subjected to rainfall or irrigation.
Acetochlor, english name: acetochtor, chemical name: 2-ethyl-6-methyl-N-ethoxymethyl-a-chloroacetanilide. The protein is absorbed by a coleoptile of a monocotyledon or a hypocotyl of a dicotyledon, is upwards conducted after being absorbed, and interferes with cell growth mainly by inhibiting plant protein synthesis, so that the cell dies. The grass weeds have stronger absorption capacity than broadleaf weeds, and residues after application are mainly degraded by microorganisms.
The action mechanism and the weed control spectrum of isoxaflutole and acetochlor are different, and the inventor searches a large number of documents, so that no report that the two effective components of acetochlor and isoxaflutole are compounded to control agricultural weeds is found at present.
Application No.: 2016106802772 the invention discloses a corn field compound herbicide containing isoxaflutole, which comprises active ingredients, wherein the active ingredients comprise isoxaflutole, acetochlor and terbuthylazine, and the weight ratio of isoxaflutole, acetochlor and terbuthylazine is (1-80): 5-80: 5 to 80. The invention utilizes three different weeding mechanisms to act on weeds together, has good weeding effect, but complex components and has certain negative effects on environment and plants.
Disclosure of Invention
The purpose of the invention is as follows:
provides a composite medicine which has wide application range, no resistance, good weeding effect and obvious synergy and is compounded by acetochlor and isoxaflutole with different mechanisms.
The technical scheme is as follows:
the combined herbicide containing acetochlor and isoxaflutole comprises the following effective components in a mass ratio of 1-20: 20-1, wherein the accumulation amount of acetochlor and isoxaflutole is 10-50% of the total mass of the composition.
The composition can be prepared into any dosage form, and mainly comprises dispersible oil suspending agent, suspoemulsion, water dispersible granule or wettable powder.
For dispersible oil suspensions, the adjuvants that can be used are: dispersants such as one or more of polycarboxylates, lignosulfonates, alkylnaphthalenesulfonates (NNO), Tersperse 2425 (alkylnaphthalenesulfonates); emulsifier such as one or more of Nongru 700# (alkylphenol formaldehyde resin polyoxyethylene ether), Nongru 2201, Span-60# (sorbitan stearate), Tween-60# (polyoxyethylene sorbitan stearate), Nongru 1601# (tristylethylphenol polyoxypropylene polyoxyethylene front-stage polymer); wetting agents such as one or more of alkylphenol polyoxyethylene ether formaldehyde condensate sulfate, alkylphenol polyoxyethylene ether phosphate, phenethylphenol polyoxyethylene ether phosphate, alkyl sulfate, alkyl sulfonate and naphthalene sulfonate; thickening agent such as one or more of white carbon black, polyvinyl alcohol, organic bentonite, and magnesium aluminum silicate; antifreeze agents such as one or more of ethylene glycol, propylene glycol, glycerol, urea, inorganic salts; preservatives such as one or more of formaldehyde, benzoic acid, sodium benzoate, cason; one or more stabilizers such as epoxidized soybean oil, epichlorohydrin and triphenyl phosphate; defoaming agents such as silicone-based defoaming agents; dispersing medium such as one or more of soybean oil, oleum Rapae, oleum Maydis, methyl oleate, diesel oil, engine oil, and mineral oil.
For common suspoemulsions, the auxiliaries that can be used are: dispersants such as one or more of polycarboxylates, lignosulfonates, alkylnaphthalenesulfonates (NNO), Tersperse 2425 (alkylnaphthalenesulfonates); emulsifier such as one or more of polyoxyethylene castor oil ether, Nongru 700# (polyoxyethylene alkylphenol formaldehyde resin), Nongru 2201, Span-60# (sorbitan stearate), Tween-60# (polyoxyethylene sorbitan stearate), Nongru 1601# (triphenylethylphenol polyoxypropylene polyoxyethylene front-stage polymer); wetting agents such as one or more of alkylphenol polyoxyethylene ether formaldehyde condensate sulfate, alkylphenol polyoxyethylene ether phosphate, phenethylphenol polyoxyethylene ether phosphate, alkyl sulfate, alkyl sulfonate and naphthalene sulfonate; thickening agent such as one or more of white carbon black, polyvinyl alcohol, organic bentonite, and magnesium aluminum silicate; antifreeze agents such as one or more of ethylene glycol, propylene glycol, glycerol, urea, inorganic salts; preservatives such as one or more of formaldehyde, benzoic acid, sodium benzoate, cason; one or more stabilizers such as epoxidized soybean oil, epichlorohydrin and triphenyl phosphate; defoaming agents such as silicone-based defoaming agents.
For water dispersible granules, the following additives can be used: a dispersant such as one or more of polycarboxylate, lignosulfonate, alkylnaphthalene sulfonate; the wetting agent is free of one or more of alkyl sulfate, alkyl sulfonate and naphthalene sulfonate; disintegrating agent such as one or more of ammonium sulfate, urea, sucrose, and glucose; binder such as one or more of diatomaceous earth, corn starch, polyethylene glycol, and carboxymethyl cellulose; the filler is one or more of kaolin, white carbon black, light calcium carbonate, talcum powder, attapulgite, pottery clay and diatomite.
For wettable powders, the auxiliaries which can be used are: a dispersant such as one or more of polycarboxylate, lignosulfonate, alkylnaphthalene sulfonate; the wetting agent is free of one or more of alkyl sulfate, alkyl sulfonate and naphthalene sulfonate; disintegrating agent such as one or more of ammonium sulfate, urea, sucrose, and glucose; the filler is one or more of kaolin, white carbon black, light calcium carbonate, talcum powder, attapulgite, pottery clay and diatomite.
The invention has the beneficial effects that:
acetochlor and isoxaflutole with different action mechanisms are mixed, the weeding spectrum is increased by utilizing the synergistic effect generated by mixing, the applicable area is enlarged, and the synergistic effect is obvious after the compound with proper proportion.
The pesticide has the advantages of simple components, fewer components and less potential harm to crops, and can obviously reduce the usage amount of pesticides, reduce the application times and reduce the pollution to the environment.
Detailed Description
Acetochlor and isoxaflutole are respectively mixed according to the proportion of single component and 100+5, 100+10, 100+30, 100+60 and 100+100 to determine the combined action on the crowndaisy hemp, the quinoa, the green bristlegrass and the large crabgrass. Adopting a potted soil spraying method (NY-T1155.3-2006): the method comprises the steps of filling quantitative soil in a porcelain pot with the height of 6cm and the diameter of 9cm, sowing 15-20 weed seeds to be tested in the porcelain pot, covering with fine soil with the thickness of 0.5-1cm, watering, placing in a greenhouse for culturing for later use, carrying out soil spraying treatment after 24 hours, spraying 1mL of liquid in each pot, repeating the treatment for 4 times, and setting the treatment without a medicament as a control. And culturing the treated test material in a greenhouse, regularly observing the growth condition of the target weeds, visually observing the target damage symptoms and the growth inhibition condition after 21d, weighing the fresh weight of the overground part or the fresh weight of the plant, and evaluating the toxicity of the medicament on the target weeds by using the target growth inhibition rate or the fresh weight inhibition rate.
And the analysis was carried out according to the Gowing method for evaluating the mode of action of the herbicide combination (NY/T1155.7-2006).
Figure DEST_PATH_IMAGE001
Evaluation criteria for combination of effects:
E0=X+Y-XY/100
in the formula, X is the fresh weight inhibition rate of acetochlor to target weeds when a certain dosage is used singly; y is the fresh weight inhibition rate of the isoxaflutole to the target weeds when a certain dosage is used singly; e0The theoretical value of the inhibition rate of the acetochlor and the isoxaflutole on the fresh weight of the target weeds when the two medicaments are mixed; e is a measured value of the inhibition rate of the fresh weight of the target weeds when two medicaments of acetochlor and isoxaflutole are mixed.
Evaluation criteria: when E-E0The synergistic effect is expressed when the concentration is more than 10 percent, and when the concentration is less than or equal to 10 percent and less than or equal to E-E0When the ratio is less than or equal to 10%, the additive effect is expressed, when E-E0< -10% is expressed as antagonism. Detailed test data are given in table 1 below:
Figure DEST_PATH_IMAGE002
。
evaluation of drug efficacy in table 1:
the results of raw tests show that acetochlor and isoxaflutole basically show additive action on the weeding effects of crowndaisy hemp, chenopodium quinoa, green bristlegrass and crab grass in the mixed combination, and the effect is obviously improved compared with the effect of single use. The combined weeding effect strength of the compound weeding composition is different according to the mixture ratio and the weed species, wherein the mixed combination of (100 + 5-100 + 10) has relatively good effect on the crowndaisy hemp, the goosefoots herb, the green bristlegrass herb and the large crabgrass. The acetochlor and the isoxaflutole are mixed, and the weeding effects of the two medicaments are added, so that the dosage can be reduced, and therefore, the development of the mixed agent of the acetochlor and the isoxaflutole has great application and popularization values.
Formulation example 1:
weighing 53% of acetochlor, 5% of isoxaflutole, 3% of sodium polycarboxylate, 6% of tween-60#, 6% of farm milk 700#, 2% of farm milk 1601, 1% of sodium alkylsulfonate, 0.8% of organic bentonite and 5% of glycol, adding corn oil to 100% of the raw materials by mass, mixing, carrying out high-speed shearing and dispersion for 20min, sanding by using a sand mill, controlling D97 to be 2-4 mu m, and preparing the 56% of acetochlor-isoxaflutole dispersible oil suspension.
Formulation example 2:
weighing 53% acetochlor, 5% agricultural emulsion 700#, 3% agricultural emulsion 2201#, a stabilizer and the like to prepare an oil phase, weighing 5% glycol, a defoaming agent and deionized water to prepare a water phase, and shearing at a high speed to disperse into an aqueous emulsion; weighing 3% of isoxaflutole, 4% of alkyl naphthalene sulfonate, 1% of sodium alkyl sulfonate, 1% of fumed silica, 1% of magnesium aluminum silicate, an antifreezing agent, a defoaming agent and the like, mixing, carrying out high-speed shearing and dispersion for 5-10min, sanding by using a sand mill, controlling D97 to be 2-4 mu m, and finally uniformly stirring the aqueous emulsion and the suspending agent to obtain the 56% acetochlor-isoxaflutole suspoemulsion.
Formulation example 3:
weighing 53% of acetochlor and 5% of white carbon black, fully and uniformly adsorbing, and adding 7% of isoxaflutole, 3% of polycarboxylate dispersant, 2% of alkyl naphthalene sulfonate formaldehyde condensate, 2% of sodium dodecyl sulfate, 2% of polyethylene glycol, 8% of ammonium sulfate and kaolin to 100% by mass. The raw materials are prepared into the 60% acetochlor-isoxaflutole water dispersible granule through the conventional water dispersible granule preparation method, namely mixing, ultramicro airflow crushing, mixing and granulating.
Formulation example 4:
weighing 56% of acetochlor and 5% of white carbon black, fully and uniformly adsorbing, and adding 6% of isoxaflutole, 6% of calcium lignosulfonate, 3% of alkyl naphthalene sulfonate formaldehyde condensate, 1% of sodium dodecyl sulfate and kaolin to 100% by mass. The 62% acetochlor-isoxaflutole wettable powder is prepared by the raw materials through the process steps of mixing, superfine jet milling and mixing.
The invention explores the difference of acetochlor-isoxaflutole compound preparations with different concentration gradients and different dosage forms in the control effect of large crabgrass in corn fields. The test agent was the acetochlor-isoxaflutole compounded preparation prepared in examples 1-4, and the control sample was 50% acetochlor emulsifiable concentrate, and the test was carried out in Jiangsu agricultural reclaimed corn fields.
Table 2 experimental design:
Figure DEST_PATH_IMAGE003
。
2.1 test treatment:
2.2 test results:
the method is carried out according to the pesticide field efficacy test criterion (I) GB/T17980.40-2000. The test result calculation formula is as follows:
Figure DEST_PATH_IMAGE004
。
2.3 conclusion:
when the effective component of the acetochlor-isoxaflutole compound preparation is only half of that of acetochlor missible oil, the control effect of the plants in 7 and 14 days is obviously excellent, so that the acetochlor and the isoxaflutole are compounded according to a certain proportion, two herbicides with different action mechanisms are compounded for use, and compared with a single preparation, the acetochlor-isoxaflutole compound preparation has an obvious synergistic effect and has a certain value in the industry and in the popularization of the herbicide in the areas.

Claims (5)

1. A herbicidal composition comprising acetochlor and isoxaflutole, characterized in that: the active ingredients of the herbicide are only acetochlor and isoxaflutole, and the mass ratio of the acetochlor to the isoxaflutole is (1-20): 20-1, wherein the cumulative amount of the effective active ingredients, namely acetochlor and isoxaflutole, is 10-50% of the total mass of the composition; in addition, the composition is provided with different dispersing agents and emulsifying agents, and can be prepared into corresponding dispersible oil agents, suspoemulsions, water dispersible granules or wettable powder formulations.
2. A herbicidal composition comprising acetochlor and isoxaflutole according to claim 1, wherein: the mass ratio of acetochlor to isoxaflutole is 10-20: 1.
3. a herbicidal composition comprising acetochlor and isoxaflutole according to claim 1, wherein: the mass ratio of acetochlor to isoxaflutole is 19: 1.
4. use of a herbicidal composition comprising acetochlor and isoxaflutole according to claim 1,2 or 3, characterized in that: the composition is applied to control of weeds of crowndaisy hemp, quinoa, green bristlegrass or crab grass in fields of corn, sugarcane, cotton, beans, peanuts, garlic, green Chinese onion, strawberry and tobacco crops.
5. Use of a herbicidal composition according to claim 4, characterized in that: the composition is applied to control of corn, field weeds, crowndaisy hemp, goosefoots or crab grass.
CN202010853437.5A 2020-08-23 2020-08-23 Weeding composition containing acetochlor and isoxaflutole Pending CN111919850A (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1071091C (en) * 1994-08-01 2001-09-19 罗纳-普朗克农业有限公司 New herbicidal compositions
WO2008150869A2 (en) * 2007-05-30 2008-12-11 Fmc Corporation Herbicidal composition
CN105851017A (en) * 2016-05-23 2016-08-17 安徽丰乐农化有限责任公司 Herbicide mixture for corn field

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1071091C (en) * 1994-08-01 2001-09-19 罗纳-普朗克农业有限公司 New herbicidal compositions
WO2008150869A2 (en) * 2007-05-30 2008-12-11 Fmc Corporation Herbicidal composition
CN105851017A (en) * 2016-05-23 2016-08-17 安徽丰乐农化有限责任公司 Herbicide mixture for corn field

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Application publication date: 20201113