CN110463713B - Composite herbicide for preventing and removing resistant weeds in wheat fields and application thereof - Google Patents

Composite herbicide for preventing and removing resistant weeds in wheat fields and application thereof Download PDF

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CN110463713B
CN110463713B CN201810610654.4A CN201810610654A CN110463713B CN 110463713 B CN110463713 B CN 110463713B CN 201810610654 A CN201810610654 A CN 201810610654A CN 110463713 B CN110463713 B CN 110463713B
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herbicide
florasulam
flufenacet
pendimethalin
wheat
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CN110463713A (en
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王晓琳
李贵
崔亚魁
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Jiangsu Academy of Agricultural Sciences
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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N33/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic nitrogen compounds
    • A01N33/16—Biocides, pest repellants or attractants, or plant growth regulators containing organic nitrogen compounds containing nitrogen-to-oxygen bonds
    • A01N33/18—Nitro compounds
    • 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
    • A01N43/82—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 three ring hetero atoms
    • 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
    • A01N43/90—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having two or more relevant hetero rings, condensed among themselves or with a common carbocyclic ring system

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

Abstract

The invention relates to a composite herbicide for preventing and removing resistant weeds in wheat fields and application thereof, wherein the composite herbicide takes flufenacet, florasulam and pendimethalin as effective components, and the weight ratio of the flufenacet to the florasulam to the pendimethalin is 1-60:1-50: 1-60. The compound herbicide is applied to the soil spraying treatment before seedling after wheat sowing to prevent and kill resistant weeds such as cleavers, speedwell, beckmark and the like.

Description

Composite herbicide for preventing and removing resistant weeds in wheat fields and application thereof
Technical Field
The invention belongs to the field of agricultural herbicides, and relates to a compound herbicide for preventing and removing resistant weeds in wheat fields and application thereof.
Background
Wheat is one of the main food crops in China, and wheat field weeds directly or indirectly affect the yield and quality of wheat by competing for moisture, nutrients, occupying ecological space, spreading pests and diseases and the like with wheat. Common grass weeds in wheat fields are beckmannia syzigachne, jiejie, brome, wild oat, alopecurus japonicus, setaria viridis, digitaria sanguinea, bluegrass and the like; broad-leaf weeds such as cleavers, shepherd's purse, descurainia sophia, maica, chickweed, vetch, speedwell and the like. With the wide application of herbicides, especially sulfonylurea herbicides, in wheat fields, the development of drug-resistant weed populations is rapid, and the harm of malignant weeds which are difficult to prevent and kill is serious.
Because of the long-term use of the bensulfuron methyl and bensulfuron methyl for preventing and killing broad-leaved weeds, the resistance of the broad-leaved weeds in the wheat field such as descurainia sophia and shepherd's purse is common and gradually dominates, and the compounds with excellent control effect in the past can be used as one component of the compound or slowly quit the market.
The Jiangsu Longdeng chemical Co., Ltd applies for a composition of flufenacet and florasulam (CN 107205395A), which can be used for treating flufenacet and florasulam resistant crops, and discloses that the composition can also contain other pesticides, such as fungicides, insecticides, nematicides and the like, which are used for enhancing the drug effect and expanding the activity spectrum. CN105454266A discloses a composition of flufenacet, isoproturon and florasulam, which can be used for controlling gramineous weeds in wheat fields; CN105557732A discloses a composition of flucarbazone, flufenacet and florasulam, which can be used for controlling gramineous weeds in wheat fields. For comprehensive control of resistant weeds, the DuPont company in the United states finds that three herbicides, namely 2,4-D, dicamba and metsulfuron-methyl, can well control sulfonylurea herbicide-resistant weeds, namely Kochia, through barrel mixing, and provides a thought for solving the resistant weeds.
According to the application, flufenacet, florasulam and pendimethalin are used in combination, and the composition is applied to a wheat field by a spraying method, so that cleavers, beckmark grass and the like with resistance to sulfonylurea herbicides can be prevented and treated. The field pesticide effect test shows that the wheat is safe to wheat because no phytotoxicity symptom is generated by spraying the soil before seedling after sowing.
Disclosure of Invention
The invention aims to provide a composition for controlling resistant weeds in a wheat field, which has a good control effect on gramineous and broad-leaved weeds in the wheat field, is particularly used for spraying treatment of soil in the wheat field and controlling resistant weeds such as cleavers, speedwell, beckmark and the like.
The technical scheme adopted by the invention is as follows:
the compound herbicide containing flufenacet, florasulam and pendimethalin is characterized in that the herbicide takes flufenacet, florasulam and pendimethalin as effective components, the weight ratio of the flufenacet to the florasulam to the pendimethalin is 1-60:1-50:1-60, the preferable ratio of the flufenacet to the florasulam to the pendimethalin is 10-50:10-20:10-30, and the more preferable ratio of the flufenacet to the florasulam to the pendimethalin is 20-50:10-20: 20-30. The content of the active ingredient in the mixed herbicide is 1 to 85%, preferably 20 to 75%.
The herbicide is used for the soil spraying treatment of wheat fields to prevent and kill off resistant weeds in the wheat fields.
The weeding composition also comprises conventional additives, wherein the conventional additives comprise a carrier, a surfactant and the like, and the weeding composition can be prepared into preparation formulations according to a method known by the technical field, including water dispersible granules, wettable powder, missible oil, a suspending agent, an oil suspending agent, a suspoemulsion, a suspended seed coating agent, an aqueous emulsion and a microemulsion.
Known auxiliaries are emulsifiers, wetting dispersants, suspending agents, disintegrants, binders, antifreezes, thickeners, stabilizers, antifoams and the like.
The emulsifier comprises phenylethylphenol polyoxyethylene polyoxypropylene ether, styrylphenol formaldehyde resin polyoxyethylene-polyoxypropylene block polyether, fatty acid polyoxyethylene ether, polyoxyethylene fatty alcohol ether, glycerol trilaurate polyoxyethylene ether, dibenzyl biphenyl polyoxyethylene ether, glycerol monolaurate polyoxyethylene ether, styrylphenol polyoxyethylene ether, castor oil polyoxyethylene ether, ethoxylated castor oil polyoxyethylene ether, alkylphenol polyoxypropylene polyoxyethylene ether, styrylphenyl polyoxyethylene ether, sec-octyl phenol polyoxyethylene ether, nonylphenol polyoxyethylene ether, alkylaryl polyoxyethylene polyoxypropylene ether, alkylphenol polyoxyethylene ether, sorbitan fatty acid ester polyoxyethylene ether, fatty alcohol polyoxyethylene ether sulfonate, polyoxyethylene alkylphenol formaldehyde condensate, calcium dodecyl sulfonate, decyl alcohol polyoxyethylene ether sodium sulfosuccinate, sodium lauryl sulfate, polyoxyethylene lauryl, One or more of sodium alkylphenol polyoxyethylene ether formaldehyde condensate sulfate, alkylphenol polyoxyethylene ether succinic acid monoester sulfonate, alkylphenol polyoxyethylene phosphate, alkylphenol polyoxyethylene ether sulfonated succinate, polyoxyethylene fatty acid ester, polymethyl acrylate, polyoxyethylene fatty ammonia, ethoxylated castor oil, alkyl-diethylene glycol ether-sodium sulfonate, fatty acid polyglycol ester, a quick penetration agent T, oleic acid polyglycol 400 ester and fatty alcohol polyoxyethylene ether;
the dispersant comprises one or more of sodium lignosulfonate, sodium methylene dinaphthalene sulfonate (dispersant NNO), calcium lignosulfonate, sodium polyacrylate, sodium methylene dinaphthalene sulfonate, polyvinylpyrrolidone, alkylamido taurate, sodium salt of alkyl naphthalene sulfonic acid polycondensate and a formaldehyde condensate of sodium methylene dinaphthalene sulfonate;
the wetting agent comprises a mixture of alkyl naphthalene sodium sulfonate, lauryl sodium sulfate, secondary alkyl sodium sulfate, sodium dodecyl benzene sulfonate, fatty alcohol polyglycol ether sulfate, fatty alcohol polyoxyethylene ether, nonylphenol polyoxyethylene ether, sorbitan fatty acid ester polyoxyethylene ether, alkyl naphthalene formaldehyde condensate, alkyl naphthalene sulfonate and an anionic wetting agent;
the solvent comprises water, N-methyl pyrrolidone, N-dimethylformamide, tributyl phosphate, tetrahydrofurfuryl alcohol, toluene, xylene, dimethyl sulfoxide, tetrahydrofuran, 1, 4 dioxane, cyclohexanol, cyclohexanone, epoxidized soybean oil, vegetable soybean oil, liquid wax, lubricating oil or solvent oil No. 100, No. 150, No. 180, No. 200 and the like, and can also be other common solvents in the field;
the filler comprises one or more of white carbon black, kaolin, light calcium carbonate, diatomite, corn starch, quartz sand, talcum powder, ammonium sulfate, sodium chloride, potassium chloride, light calcium and the like;
the antifreezing agent comprises one or more of ethylene glycol, propylene glycol, urea, diethylene glycol, glycerol, etc.;
the thickener comprises one or more of xanthan gum, polyvinyl alcohol, organic bentonite, hydroxymethyl cellulose, magnesium aluminum silicate, etc.
The composite herbicide has the advantages that: the composition is reasonable, has obvious synergistic effect, and can be used for spraying treatment of wheat field soil to prevent and kill resistant weeds in wheat fields such as cleavers, beckmannia syzigachne, speedwell and the like.
Detailed Description
The present invention is further illustrated by the following examples, wherein the percentages are by weight, but the present invention is not limited thereto.
1. Formulation examples
Example 1, 10% flufenacet, 10% florasulam, 20% pendimethalin, 11% sodium lignosulfonate, 9% sodium dodecylbenzene sulfonate and 100% kaolin, and the mixture is subjected to air flow pulverization to prepare 40% flufenacet-florasulam-pendimethalin wettable powder.
Example 2, flufenacet 5%, florasulam 60%, pendimethalin 5%, alkyl naphthalene sulfonate 7%, calcium dodecyl sulfate 7%, and kaolin added to 100%, and mixed to prepare 70% flufenacet-florasulam-pendimethalin water dispersible granules.
Example 3, flufenacet 5%, florasulam 5%, pendimethalin 60%, aryl phenol polyoxyethylene succinate sulfonate 5%, nekal 6%, silicone 0.5%, xanthan gum 1%, ethylene glycol 2%, deionized water to 100%, mixed to make 70% flufenacet-florasulam-pendimethalin suspension.
Example 4, flufenacet 60%, florasulam 5%, pendimethalin 3%, alkylaryl polyoxyethylene ether 8%, wetting penetrant F6%, tween 805.5%, silicone oil 0.4%, polyvinyl alcohol 4%, propylene glycol 2%, deionized water to 100%, mixed to make 68% flufenacet-florasulam-pendimethalin suspoemulsion.
Example 5, flufenacet 10%, florasulam 20%, pendimethalin 30%, calcium dodecylbenzene sulfonate 6%, nonylphenol polyoxyethylene ether 4%, fatty alcohol polyoxyethylene ether 6%, organobentonite 2%, soybean oil 5%, and methyl oleate to 100%. Mixing to prepare 60 percent of flufenacet, florasulam and pendimethalin dispersible oil suspending agent.
2. Test of drug efficacy
Reagent to be tested: the compounded herbicides of examples 1-5.
Control agents: 50g/L florasulam suspending agent (control medicament 1), 41 percent of flufenacet suspending agent (control medicament 2) and 33 percent of pendimethalin missible oil (control medicament 3).
And (3) controlling crops: wheat (Triticum aestivum L.).
The tested weeds: slash-syzichne, cleavers, speedwell, resistant cleavers, resistant beckmannia syzigachne and resistant speedwell. The method comprises the following steps: mixing soil and fertilizer at a mass ratio of 10:1, placing into plastic pots with diameter of 7cm, adding water to saturation, sowing 20 dormancy-released weed seeds in each pot, covering with a layer of fine soil, culturing in incubator (temperature: 18 deg.C in daytime, 13 deg.C at night, and light period of 12h/12h), spraying soil 24h later according to specific dosage, repeating for 4 times, cutting part of the aerial part of weed 35d after spraying, weighing fresh mass, calculating fresh mass inhibition rate, and calculating ED50According to ED50And determining resistant and sensitive populations, and calculating resistance multiples. Resistant cleavers (resistant to tribenuron-methyl) with a fold resistance of about 15, ED, determined in the laboratory50A value of about 100g a.i./acre; resistant beckmannia syzigachne (anti-fenoxaprop-P-ethyl), the resistance multiple of which is about 20 and ED is determined in a laboratory50A value of about 180g a.i./acre; resistant veronica (anti-methoxone), the fold resistance of which was determined in the laboratory to be about 17, ED50The value was about 150g a.i./mu.
The test method comprises the following steps:
the test is carried out in a winter wheat test field (greenhouse), and seeds of beckmannia syzigachne, cleavers and speedwell (resistant and non-resistant) are selected and sowed in the wheat field. The soil treatment was carried out up to 3 leaves and 1 heart, and the death of weeds was observed 35d after the treatment, and the herbicidal activities of the respective agents were compared. The results are shown in Table 1.
TABLE 1 post-dose 35d herbicidal results
Figure BDA0001695494080000061
Greenhouse test results show that the compound of flufenacet, florasulam and pendimethalin has good control effect on wheat field resistant weeds, namely cleavers, speedwell and beckmark grass, and according to visual inspection in the field, crops grow normally within the test dose range, and no phytotoxicity and abnormal phenomena of plants are seen, which indicates that the compound is safe to wheat.
3. Indoor Activity assay
To further understand the combined action of the composite herbicide on weeds, the inventor performs soil treatment combined action indoor activity determination on the blending of flufenacet, florasulam and pendimethalin:
test materials: galium aparine (common non-resistant weed).
The test method comprises the following steps:
weighing a certain amount of herbicide original drug, fully dissolving the herbicide original drug, respectively preparing single-dose mother liquor, setting a series of ratios according to the mixing purpose, and setting 5-7 concentration gradients in each ratio. Selecting representative sensitive weed seeds according to a single-agent weed control spectrum, carrying out soil spray treatment on weeds, then placing the weeds in an illumination incubator for room temperature culture for 35 days, calculating the control effect (fresh weight control effect or plant control effect), and then calculating the control effect by using a least square methodMean inhibition of medium-concentration ED50(95% confidence limit), and the co-toxicity coefficient (CTC) was calculated using the Sun cloud Pepper method.
The co-toxicity coefficient (CTC) is more than or equal to 120 and shows a synergistic effect; the co-toxicity coefficient (CTC) is less than or equal to 80, and the antagonism is shown; 80 < co-toxicity coefficient (CTC) < 120 showed additive effects. The test results are shown in Table 2.
TABLE 2 Combined action test results of herbicidal compositions of different proportions on Galium aparine
Figure BDA0001695494080000071
Figure BDA0001695494080000081
Indoor determination results in table 2 show that flufenacet, florasulam and pendimethalin have good synergistic effect on non-resistant weed cleavers in the proportion range of 1-60:1-50: 1-60. Therefore, the herbicide can also be used for controlling non-resistant weeds in wheat fields.
The test results prove that the weeding composition containing flufenacet, florasulam and pendimethalin is safe to target crops, and has an obvious synergistic effect compared with a single agent. The weeding composition can well prevent and control weeds such as cleavers and beckmannia syzigachne which generate resistance to sulfonylurea herbicides, the prevention effect is obviously increased along with the increase of the dosage, and the resistant weeds such as cleavers and beckmannia syzigachne in the whole growth period of crops can be controlled by one-time application, so that the weeding composition has an obvious weeding effect, is environment-friendly, has no influence on next-stubble crops, and can be used for treating resistant weeds.

Claims (10)

1. The composite herbicide for preventing and killing resistant weeds in wheat fields is characterized in that flufenacet, florasulam and pendimethalin are used as effective components of the herbicide, and the weight ratio of the flufenacet to the florasulam to the pendimethalin is 1-60:1-50: 1-60.
2. Composite herbicide according to claim 1, characterized in that the ratio of flufenacet, florasulam and pendimethalin is 10-50:10-20: 10-30.
3. Composite herbicide according to claim 1, characterized in that the ratio of flufenacet, florasulam and pendimethalin is between 20 and 50:10 and 20:20 and 30.
4. The compound herbicide as claimed in any one of claims 1 to 3, characterized in that the content of flufenacet, florasulam and pendimethalin is 1 to 85%.
5. The composite herbicide as claimed in any one of claims 1 to 3, wherein the content of flufenacet, florasulam and pendimethalin is 20 to 75%.
6. The composite herbicide according to claim 1, characterized in that the composite herbicide and conventional adjuvants permitted on the formulation of pesticides are formulated into any formulation permitted on pesticides.
7. The composite herbicide according to claim 6, wherein: the dosage forms of the herbicide comprise water dispersible granules, wettable powder, suspending agents and suspoemulsion.
8. Use of the complex herbicide as claimed in any one of claims 1 to 7 for controlling resistant weeds in wheat fields.
9. Use according to claim 8, characterized in that the resistant weeds are cleavers, grandma and beckmark grass.
10. Use according to claim 8, characterized in that it is used for the treatment of soil spray after wheat field sowing before emergence.
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102326564A (en) * 2011-07-12 2012-01-25 陕西美邦农药有限公司 Weeding composition containing florasulam
CN104904728A (en) * 2015-07-02 2015-09-16 张家港市植保植检站 Pesticide combination containing flufenacet and pendimethalin and appliance thereof
CN107205395A (en) * 2014-11-11 2017-09-26 江苏龙灯化学有限公司 Herbicidal combinations and the method for controlling plant growth

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102326564A (en) * 2011-07-12 2012-01-25 陕西美邦农药有限公司 Weeding composition containing florasulam
CN107205395A (en) * 2014-11-11 2017-09-26 江苏龙灯化学有限公司 Herbicidal combinations and the method for controlling plant growth
CN104904728A (en) * 2015-07-02 2015-09-16 张家港市植保植检站 Pesticide combination containing flufenacet and pendimethalin and appliance thereof

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