CN116326589A - Agricultural herbicide composition and application thereof - Google Patents

Agricultural herbicide composition and application thereof Download PDF

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Publication number
CN116326589A
CN116326589A CN202310049656.1A CN202310049656A CN116326589A CN 116326589 A CN116326589 A CN 116326589A CN 202310049656 A CN202310049656 A CN 202310049656A CN 116326589 A CN116326589 A CN 116326589A
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clomazone
herbicide composition
agent
agricultural herbicide
agricultural
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陈心如
于志波
张永芝
毕立国
陈军
张瑞生
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Qingdao Hansen Biologic Science Co ltd
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Qingdao Hansen Biologic Science 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
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G13/00—Protecting plants
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01P—BIOCIDAL, PEST REPELLANT, PEST ATTRACTANT OR PLANT GROWTH REGULATORY ACTIVITY OF CHEMICAL COMPOUNDS OR PREPARATIONS
    • A01P13/00—Herbicides; Algicides
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change

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

Abstract

The invention provides an agricultural herbicide composition and application thereof, and belongs to the technical field of agricultural herbicides. The agricultural herbicide composition provided by the invention comprises active ingredients and auxiliary ingredients, wherein the active ingredients consist of haloxyfop-methyl and clomazone, and the mass ratio of the haloxyfop-methyl to the clomazone is 30:1-1:40. The herbicide provided by the invention has the advantages that the application time range of two effective components is wide, wherein the haloxyfop-R-methyl is an ultra-long chain fatty acid extended synthase inhibitor, the clomazone has systemic conductivity, the synergistic effect of the two can complement the advantages, the weed killing spectrum is enlarged, and the effect of preventing and treating grassy weeds and broadleaf weeds is obvious; the duration of the drug effect is long, so that the dosage of active ingredients can be effectively reduced, the dosage of the haloxyfop-methyl per unit area is low, and the activity is higher; the pesticide composition is safe to crops, has low toxicity to animals and human beings, is safe to the environment, and has wide development prospect.

Description

Agricultural herbicide composition and application thereof
Technical Field
The invention belongs to the technical field of pesticide herbicides, and particularly relates to an agricultural herbicide composition and application thereof.
Background
The haloxyfop-methyl is a novel soil treatment agent developed by Japanese combinatorial chemistry company in 2002, has high biological activity for preventing and killing annual gramineous weeds and broadleaf weeds, and belongs to novel pyrazole selective herbicides. Weeds treated with metaxazole greatly reduced biosynthesis of Very Long Chain Fatty Acids (VLCFAs) and caused the construction of fatty acid precursor substances. The haloxyfop-R-methyl can specifically inhibit a plurality of extension steps catalyzed by the ultra-long chain fatty acid extension enzyme, and is characterized by high activity, 8-10 times lower dosage than that of the classical soil treatment agent chloroacetamide herbicide, longer lasting effect, stronger compatibility and lower majority of biotoxicity. The new trend of the soil treatment agent is realized by substituting chloroacetamide herbicides in the future or allowed.
The clomazone is an isoxazolinone herbicide developed by Fumeishi corporation in the United states, and can prevent the synthesis of carotenoid by destroying the biosynthesis of plastid isoprenoid, so that susceptible plants cannot normally perform photosynthesis, and thus stop growing and die, and can be used for orchards, vegetables, cotton, rice, beet, barley, wheat, rape and the like; the weeding composition has wide weeding spectrum and is effective on weeds which are difficult to prevent, such as ryegrass, and the like; the application window period is long, the lasting effect is good, the application can be carried out before and after the emergence or during sowing, the herbicide has good prevention effect on the generated weeds, and the herbicide also has a certain prevention and removal effect on the weeds generated in the later period.
In the actual process of agricultural production, the application of chemical agents is the most effective means for controlling plant diseases, weeds, but the most easily generated problem by chemical control of weeds is the generation of weed resistance. And the chemical herbicide compound or compounding which is easy to cause a series of reasonable problems such as medicament residue, environmental pollution and the like has the positive characteristics of expanding the weeding spectrum, improving the control effect, prolonging the application period, reducing the dosage, reducing the phytotoxicity, reducing the residue, delaying the occurrence and development of weed drug resistance and the like.
Disclosure of Invention
The invention provides an agricultural herbicide composition and application thereof, and the composition has the positive characteristics of small resistance risk, low cost, long efficacy, small environmental pollution and the like.
In order to achieve the above object, the present invention provides an agricultural herbicide composition comprising an active ingredient and an auxiliary ingredient, wherein the active ingredient is composed of topramezone and clomazone, and the mass ratio of the topramezone to the clomazone is 30:1-1:40, which are commercially available.
Preferably, the mass ratio of the active ingredients of the fenpyrad to the clomazone is 10:1-1:5.
Preferably, the active ingredients of the fenpyrad and the clomazone account for 8-70% of the weight of the agricultural herbicide.
Preferably, the auxiliary components comprise a carrier and an auxiliary agent.
Preferably, the carrier is at least one of water, solvent and filler, and the auxiliary agent comprises at least one surfactant, and can be selected according to different application occasions and requirements.
In the above scheme, the water is preferably deionized water.
The solvent is selected from at least one of N, N-dimethylformamide, cyclohexanone, toluene, xylene, S-150#, dimethyl sulfoxide, methanol, ethanol, propanol, butanol, trimethylcyclohexanone, triethanolamine, isopropylamine, N-methylpyrrolidone, ethylene glycol, diethylene glycol, ethylene glycol methyl ether, butyl ether, ethanolamine, ethyl acetate, acetonitrile or methyl oleate, and soybean oil.
The filler is selected from at least one of kaolin, diatomite, bentonite, attapulgite, white carbon black, starch or light calcium carbonate.
Preferably, the surfactant comprises at least one of an emulsifier, a dispersant, a wetting agent or a penetrating agent; in this embodiment, the surfactant is a single or a complex formulation of a conventional nonionic or anionic surfactant.
The auxiliary agent also comprises at least one of an antifreezing agent, a thickening agent, a stabilizing agent, a disintegrating agent and an antifoaming agent.
The emulsifier is selected from one or more of agro-emulsion 500# (calcium alkyl benzene sulfonate), OP series phosphate (nonylphenol polyoxyethylene ether phosphate), 600# phosphate (phenylphenol polyoxyethylene ether phosphate), styrene polyoxyethylene ether ammonium sulfate, alkyl diphenyl ether disulfonate magnesium salt, triethanolamine salt, agro-emulsion 400# (benzyl dimethyl phenol polyoxyethylene ether), agro-emulsion 700# (alkylphenol formaldehyde resin polyoxyethylene ether), agro-emulsion 36# (phenethyl phenol formaldehyde resin polyoxyethylene ether), agro-emulsion 1600# (phenethyl phenol polyoxyethylene polypropylene ether), ethylene oxide-propylene oxide block copolymer, OP series (nonylphenol polyoxyethylene ether), BY series (castor oil polyoxyethylene ether), agro-emulsion 33# (alkylaryl polyoxyethylene polyoxypropylene ether), HY series (compound vegetable oil emulsifier), span series (sorbitan monostearate), tween series (sorbitan fatty acid ester polyoxyethylene ether) or AEO series (fatty alcohol polyoxyethylene ether).
The dispersing agent is selected from at least one of polycarboxylate, lignosulfonate, alkylphenol polyoxyethylene ether formaldehyde condensate sulfate, calcium alkylbenzenesulfonate, naphthalene sulfonic formaldehyde condensate sodium salt, alkylphenol polyoxyethylene ether, fatty amine polyoxyethylene ether, fatty acid polyoxyethylene ether or glycerin fatty acid ester polyoxyethylene ether.
The wetting agent is selected from at least one of sodium dodecyl sulfate, sodium dodecyl benzene sulfonate, nekal BX, wetting penetrating agent F, fructus Gleditsiae Abnormalis powder, faeces Bombycis or soapberry powder.
The penetrating agent is selected from at least one of penetrating agent JFC (fatty alcohol polyoxyethylene ether), penetrating agent T (diisooctyl maleate sulfonate), azone or organic silicon.
The thickener is selected from at least one of xanthan gum, polyvinyl alcohol, bentonite, carboxymethyl cellulose or magnesium aluminum silicate.
The antifreezing agent is a mixture composed of at least one of ethylene glycol, propylene glycol, glycerol or urea.
The defoamer is a mixture composed of at least one of silicone oil, silicone compound S930, C10-C20 saturated fatty acid compounds or C8-C10 fatty alcohol compounds.
The disintegrating agent is selected from at least one of bentonite, urea, ammonium sulfate, aluminum chloride, low-substituted hydroxypropyl cellulose, lactose, citric acid, succinic acid or sodium bicarbonate.
The stabilizer is a mixture of at least one of epoxidized soybean oil, epichlorohydrin, BHT, ethyl acetate and triphenyl phosphate.
Such materials are commercially available from a variety of sources.
Preferably, the agricultural herbicide composition is in the form of emulsifiable concentrate, microemulsion, wettable powder, water suspension, oil suspension or water dispersible granule.
The invention also provides application of the agricultural herbicide composition in preventing and killing broadleaf weeds and grassy weeds in a wheat field.
Preferably, the broadleaf weeds and grassy weeds in the wheat field are at least one selected from the group consisting of rye, brome, myrtle, ryegrass, green bristlegrass, acalypha australis and chenopodium.
The invention also provides application of the agricultural herbicide composition in preventing and controlling weeds before crop planting or after sowing and before emergence.
Compared with the prior art, the invention has the advantages and positive effects that:
1. the weeding composition provided by the invention has complementary advantages aiming at different ages of grass, has good control effect on the whole growth period of weeds, expands weeding range, and has good control effect on gramineous weeds such as rye grass, brome, barley grass, ryegrass, green bristlegrass and the like and annual broadleaf weeds such as amaranth and chenopodium.
2. The invention is composed of two active ingredients with different action sites, the action sites are increased, which is beneficial to overcoming and delaying the generation of drug resistance of weeds, and the drug effect is greatly improved;
3. the prevention and control effect is high, the duration is long, and the resistance risk is small;
4. the invention has obvious synergistic effect, reduced field consumption of effective components, reduced production and use cost, reduced pesticide residue and environmental pollution, high safety and good environmental compatibility.
Detailed Description
The following description of the technical solutions in the embodiments of the present invention will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
1. Wettable powder
The preparation method comprises the following steps: the active ingredients of the fenpyrad and the clomazone are added into a carrier, and a surfactant and other functional auxiliary agents are added into the carrier, mixed, crushed by air flow and mixed to prepare the wettable powder. The main equipment is a mixer and an air flow pulverizer.
Example 1: (62% fenpyr. Dichlorvos wettable powder) 30:1
The formula comprises the following components: penoxsulam, 60%; 2% of clomazone; wetting agent sodium dodecyl sulfate, 3%; dispersing agent calcium lignosulfonate, 8%; filler white carbon black, 19 percent, filler kaolin and the balance.
Example 2: (63% fenpyr. Dichlorvos wettable powder) 20:1
The formula comprises the following components: penoxsulam, 60%; 3% of clomazone; wetting agent sodium dodecyl sulfate, 3%; dispersing agent calcium lignosulfonate, 8%; 10% of filler white carbon black, 10% of filler kaolin and the balance of filler kaolin.
Example 3: (66% fenpyr. Dichlorvos wettable powder) 10:1
The formula comprises the following components: penoxsulam, 60%; clomazone, 6%; wetting agent sodium dodecyl sulfate, 4%; dispersant calcium lignosulfonate, 10%; 8% of filler white carbon black, 8% of filler kaolin and the balance of filler kaolin.
2. Microemulsion preparation
The preparation method comprises the following steps: according to the formula proportion of the embodiment, the active ingredients of the fenpyrad and the clomazone are completely dissolved by using a solvent and a cosolvent, then other auxiliary agents are added, the mixture is uniformly mixed, finally water is added, and the mixture is fully stirred, so that the weeding composition microemulsion preparation is prepared.
Example 4: (6% fenpyr. Clomazone microemulsion) 5:1
The formula comprises the following components: penoxsulam, 5%; 1% of clomazone; ethanol, 8%; s150#,8%; emulsifying agent 500#,10%; emulsifying agent No. 604, 8%; propylene glycol as an antifreezing agent; 3%; water, balance.
3. Emulsifiable concentrate
The preparation method comprises the following steps: adding the effective components into the carrier according to the formula proportion of the embodiment, adding the surfactant and other functional additives into the carrier, and stirring and uniformly mixing the mixture in a stirring and mixing kettle. The stirring and mixing kettle can be an enamel reaction kettle, a stainless steel stirring kettle and the like.
Example 5: (16% fenpyr-clomazone emulsifiable concentrate) 1:1
The formula comprises the following components: penoxsulam, 8%; clomazone, 8%; the emulsifier is agricultural emulsion 500#,4% and agricultural emulsion OP-10#,5%; the solvent is pyrrolidone, 5%; ethyl acetate, 20%; xylene, balance.
4. Dispersible oil suspension agent
The preparation method comprises the following steps: according to the formula proportion, the active ingredients of the fenpyrad, the clomazone, the surfactant and other functional auxiliary agents are sequentially placed in a reaction kettle, and are evenly mixed by oiling, high-speed shearing and wet sanding are carried out, and finally, the product is obtained by homogenizing and filtering. The main equipment is a batching kettle, a colloid mill or a homogenizing mixer and a sand mill.
Example 6: (24% fenpyr. Dichlorvos dispersible oil suspension agent) 1:5
The formula comprises the following components: penoxsulam, 4%; terbutazine, 20%; oil dispersing polycarboxylate, 2% and emulsifier which is compound nonionic emulsifier HY8365, 18%; the thickener is organic bentonite, 1.3%; methyl oleate, balance.
Example 7: (33% of the haloxyfop-butyl-terbutazone dispersible oil suspension) 1:10
The formula comprises the following components: penoxsulam, 3%; 30% of clomazone; emulsifying agent agricultural emulsion BY-125,5%; oil-dispersing polycarboxylate, 2%; the emulsifier is a compound nonionic emulsifier HY8365, 18%; the thickener is organic bentonite, and the dosage is 0.8%; methyl oleate, balance.
5. Aqueous suspension agent
The preparation method comprises the following steps: according to the formula proportion, the active ingredients of the fenpyrad, the clomazone, the surfactant and other functional auxiliary agents are sequentially placed in a reaction kettle, water is added and mixed uniformly, and the product is obtained through high-speed shearing, wet sanding and homogenizing and filtering. The main equipment is a batching kettle, a colloid mill or a homogenizing mixer and a sand mill.
Example 8: (48% fenpyr. Dichlorvos aqueous suspension) 1:15
The formula comprises the following components: penoxsulam, 3%; clomazone, 45%; emulsifying agent agricultural emulsion NP-10,3%; a dispersant polycarboxylate, 5%; the thickener is xanthan gum and magnesium aluminum silicate, and the dosage is 0.08% and 0.8% respectively; 3% of antifreeze glycol; defoaming agent silicone compound S930,0.2%; water, balance.
6. Water dispersible granule
The preparation method comprises the following steps: according to the formula proportion of the embodiment, the active ingredients of the fenpyrad and the clomazone are added into a carrier, and a surfactant and other functional auxiliary agents are added into the carrier, mixed, subjected to jet milling, added with 10-25% of water, and then kneaded, granulated, dried and screened to prepare a water dispersible granule product; or spraying water, granulating, drying, and sieving to obtain the final product. The main equipment includes mixer, jet mill, kneader, extrusion granulator, drying room or fluidized bed, or boiling granulator, sieving machine.
Example 9: (63% of fenpyr-clomazone water dispersible granule) 1:20
The formula comprises the following components: penoxsulam, 3%; terbutazine, 60%; 3% of wetting agent sodium dodecyl benzene sulfonate; dispersant alkyl naphthalene sulfonate formaldehyde condensate, 8%; and the balance of the filling attapulgite.
Example 10: (62% of fenpyr-clomazone water dispersible granule) 1:30
The formula comprises the following components: penoxsulam, 2%; terbutazine, 60%; 3% of wetting agent sodium dodecyl benzene sulfonate; dispersant alkyl naphthalene sulfonate formaldehyde condensate, 8%; and the balance of the filling attapulgite.
Example 11: (70% of fenpyrad/terbutazine water dispersible granule) 1:40
The formula comprises the following components: 1.7% of pyrazophos; terbutazine, 68.3%; 3% of wetting agent sodium dodecyl benzene sulfonate; dispersant alkyl naphthalene sulfonate formaldehyde condensate, 8%; and the balance of the filling attapulgite.
Indoor toxicology bioassay:
1. indoor toxicological bioassay of haloxyfop-methyl and clomazone
1.1 reagents for test
99% of metazopyr and 96% of clomazone
1.2 test targets
Ryegrass and acalypha australis
1.3 Experimental methods
By means of indoor bioassay, ryegrass and acalypha australis are taken as bioassay objects, soil without herbicide is selected, pH=6.8, and the soil is air-dried, sieved and quantitatively placed in a plastic pot with the diameter of 32cm and the depth of 20 cm. The stem and leaf spraying method is adopted, and the part 4 of herbicide is referred to the indoor bioassay test standard of NY/T1155.4-2006 pesticide. 30 seeds of the target weed seeds to be tested are sown in a plastic pot, covered with fine soil with the thickness of 1cm, placed in a controllable greenhouse for culture, the temperature of the white day in the greenhouse is 25+/-2 ℃, the temperature at night is 20+/-2 ℃, the illumination period is 16D/8L, the illumination intensity is 1400 mu mol/(m < 2 >. S), and the relative humidity is 70+/-5%. And (3) carrying out stem and leaf spraying treatment when weeds grow to 2-5 leaf stages, spraying 1mL of liquid medicine into each pot, repeating the treatment for 4 times, and setting the treatment without the medicament as a control. And (3) continuously placing the treated test material in a controllable greenhouse for culture, periodically observing the growth condition of target weeds, measuring the fresh weight of the plant after 15d, and evaluating the virulence effect of the agent on the target weeds by using the fresh weight inhibition rate.
Blank control solution: 1mLDMF with 400mL0.1% TWEEN80 emulsifier in water.
Fresh weight inhibition ratio P (%) = [ (control fresh weight-treated fresh weight)/control fresh weight ] ×100%
1.3 data statistics and analysis
Combined action evaluation method: the virulence equation, LC50 value (mg/L) and co-toxicity coefficient were calculated using DPS software analysis.
The method comprises the steps of respectively establishing a virulence regression equation by taking the logarithmic value of the concentration (mg/L) of the medicament as an independent variable x and the several value of the fresh weight inhibition ratio as a dependent variable y, calculating LC50 of a single medicament and each proportion by adopting DPS software, and calculating a virulence index and a co-virulence coefficient (CTC) according to a grand cloud Pei method. The calculation formula is as follows: (the standard medicament is metazachlor, and the toxicity index is 100):
measured toxicity index (ATI) = (standard agent LC 50/test agent LC 50) ×100
Theoretical Toxicity Index (TTI) = Σ (toxicity index ATI of an active ingredient x percentage of the active ingredient in a mixture)
Co-toxicity coefficient (CTC) = [ actual drug mixed toxicity index (ATI)/drug mixed Theoretical Toxicity Index (TTI) ]100
CTCs are synergistic when greater than 120, antagonistic when less than 80, additive when 80-120.
TABLE 1 toxicity determination results of active ingredients in different proportions on ryegrass
Figure BDA0004057280470000081
Figure BDA0004057280470000091
As can be seen from table 1, the ratio of fenpyr to clomazone is between 30:1 to 1: within 40, CTC values of greater than 100, exhibited a synergistic effect, wherein in the case of fenpyr: the clomazone is 10:1 to 1:5, the co-toxicity coefficient is more than 160, and the synergy is best.
TABLE 2 toxicity determination results of different ratios of active ingredients on acalypha australis
Figure BDA0004057280470000092
Figure BDA0004057280470000101
As can be seen from table 2, the ratio of fenpyr to clomazone is between 30:1 to 1: within 40, CTC values of greater than 100, exhibited a synergistic effect, wherein in the case of fenpyr: the clomazone is 10:1 to 1:5, the co-toxicity coefficient is more than 170, and the synergy is best.
As can be seen from tables 1 and 2, the haloxyfop-methyl and clomazone were found in 30:1 to 1:40, the co-toxicity coefficients are all larger than 100, which indicates that the compounded halofop-butyl and clomazone show a synergistic effect on wheat field weeds, and the halofop-butyl is used in the following steps: the clomazone is 10:1 to 1:5 (mass ratio), the synergy is most obvious, and the co-toxicity coefficient reaches the highest value.
And (3) verifying the field efficacy:
2.1 test methods
The weeds in the experimental wheat fields mainly comprise ryegrass, wheat-grass, acalypha australis, field inula flowers and the like. Examples 1,3,4,5,6,7,9, 11 used the drug and 40% metazachlor SC,38% clomazone SC as the control drug.
Example 1: (62% fenpyr. Dichlorvos wettable powder) 30:1
Example 3: (66% fenpyr. Dichlorvos wettable powder) 10:1
Example 4: (6% fenpyr. Clomazone microemulsion) 5:1
Example 5: (16% fenpyr-clomazone emulsifiable concentrate) 1:1
Example 6: (24% fenpyr. Dichlorvos dispersible oil suspension agent) 1:5
Example 7: (33% of the haloxyfop-butyl-terbutazone dispersible oil suspension) 1:10
Example 9: (63% of fenpyr-clomazone water dispersible granule) 1:20
Example 11: (70% of fenpyrad/terbutazine water dispersible granule) 1:40
The field pharmacodynamic test is carried out by 11 treatments such as medicament treatment group, single medicament treatment group, clear water control group, etc., and each test cell area is 50m 2 Every 4 repetitions of treatment, the mu of the applied medicine is the same, the cells are arranged randomly, and 0.5m protection rows are arranged between each cell and around the test field. The conventional spraying is carried out by using a manual sprayer of industrial and agricultural type-16 type, spraying is carried out in the 2-5 leaf period of weeds, clear water is used as a control, no rainfall exists in the 24h of pesticide application, no special bad weather exists in the test period, and the conventional management in the field is carried out. Each of 15d and 30d after the administration was investigated 1 time and 2 times in total.
The growth of wheat was visually examined 3, 7, 15 and 30 days after the drug, and whether or not drug damage occurred was observed. The weed control was investigated 15d and 30d after the application of the pesticide, and the test was carried out according to the "pesticide field efficacy test criterion" GB/T17980.30-2000. The investigation method is that four points are sampled from the diagonal line of each cell, and each point is 0.25m 2 The number of weed plants was recorded. The control effect calculation method comprises the following steps:
Figure BDA0004057280470000111
table 3 results of 15d treatment of weeds in wheat fields
Figure BDA0004057280470000112
Table 4 30d results of efficacy of treatment agent for controlling weeds in wheat fields
Figure BDA0004057280470000113
Figure BDA0004057280470000121
According to the data in tables 3 and 4, the test example is obviously higher than the single dose of the halofop-butyl and the single dose of the clomazone in preventing and killing effects of wheat fields, and after the single dose of the halofop-butyl and the single dose of the clomazone are compounded according to a certain proportion, the plant prevention effect of the test example can reach more than 90%, which indicates that the synergistic effect can be achieved after the halofop-butyl and the clomazone are compounded. In the field test, the growth condition of crops is not affected, the biological safety is high, and the environmental compatibility is good.
The average plant prevention effect of examples 3,4,5 and 6 is obviously higher than the numerical value of other medicines in other proportions, and the average plant prevention effect reaches more than 98% after 30 days, which shows that the plant prevention effect is improved in the case of the fenpyrad: clomazone (mass ratio) =10: 1:1 to 1: the 5-effect is the best. Therefore, the dichlorvos and the haloxyfop are ideal compound weeding products, and have important significance for peasants to become rich and protecting local ecological environment.

Claims (10)

1. The agricultural herbicide composition is characterized by comprising an active ingredient and an auxiliary ingredient, wherein the active ingredient consists of haloxyfop-methyl and clomazone, and the mass ratio of the haloxyfop-methyl to the clomazone is 30:1-1:40.
2. The agricultural herbicide composition according to claim 1, wherein the mass ratio of the active ingredients of the fenpyrad to the clomazone is 10:1-1:5.
3. The agricultural herbicide composition according to claim 1 or 2, wherein the active ingredients of the fenpyrad and the clomazone account for 8-70% by weight of the agricultural herbicide.
4. An agricultural herbicide composition as claimed in claim 1, wherein the auxiliary ingredients include carriers and adjuvants.
5. The agricultural herbicide composition of claim 4, wherein the carrier is at least one of water, a solvent and a filler, and the adjuvant comprises at least one surfactant.
6. The agricultural herbicide composition of claim 5, wherein the surfactant comprises at least one of an emulsifier, a dispersant, a wetting agent and a penetrating agent; the auxiliary agent also comprises at least one of an antifreezing agent, a thickening agent, a stabilizing agent, a disintegrating agent and an antifoaming agent.
7. The agricultural herbicide composition according to claim 3 or 4, wherein the formulation of the agricultural herbicide composition is an emulsifiable concentrate, a microemulsion, a wettable powder, an aqueous suspension, an oil suspension or a water dispersible granule.
8. Use of the agricultural herbicide composition of any one of claims 1 to 7 for controlling broadleaf weeds and grassy weeds in wheat fields.
9. The use according to claim 8, wherein the wheat field broadleaf weeds and grasses are selected from at least one of rye, brome, myrtle, ryegrass, green bristlegrass, acalypha australis and chenopodium.
10. Use of an agricultural herbicide composition according to any one of claims 1 to 7 for controlling pre-emergence weeds before or after crop planting.
CN202310049656.1A 2023-02-01 2023-02-01 Agricultural herbicide composition and application thereof Pending CN116326589A (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106455569A (en) * 2014-02-23 2017-02-22 Fmc有限公司 Use of 3-isoxazolidinones compounds as selective herbicides
CN110461158A (en) * 2017-03-24 2019-11-15 拜耳公司 Herbicidal mixture comprising 2- [(2,4 dichloro benzene base) methyl] -4,4- dimethyl -3- isoxazole alkanone, sulfone pyrrole grass azoles and mefenpyrdiethyl

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106455569A (en) * 2014-02-23 2017-02-22 Fmc有限公司 Use of 3-isoxazolidinones compounds as selective herbicides
CN110461158A (en) * 2017-03-24 2019-11-15 拜耳公司 Herbicidal mixture comprising 2- [(2,4 dichloro benzene base) methyl] -4,4- dimethyl -3- isoxazole alkanone, sulfone pyrrole grass azoles and mefenpyrdiethyl

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