CN111264541A - Agricultural field herbicide composition and application thereof - Google Patents
Agricultural field herbicide composition and application thereof Download PDFInfo
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- CN111264541A CN111264541A CN202010165860.6A CN202010165860A CN111264541A CN 111264541 A CN111264541 A CN 111264541A CN 202010165860 A CN202010165860 A CN 202010165860A CN 111264541 A CN111264541 A CN 111264541A
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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
- A01N43/82—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
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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
- 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
- A01N37/22—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 the nitrogen atom being directly attached to an aromatic ring system, e.g. anilides
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Abstract
The invention provides an agricultural field herbicide composition and application thereof, belonging to the field of agricultural herbicides. The agricultural field herbicide composition comprises effective components and auxiliary components, wherein the effective components consist of flufenacet and metolachlor in a weight ratio of 1:40-40: 1. The agricultural field herbicide composition can effectively prevent and kill annual weeds in peanut fields and weeds before crop planting or before seedling emergence after sowing. The composition has the advantages of expanding a weeding spectrum, improving the control effect, prolonging the application period, reducing the dosage, reducing the phytotoxicity, reducing the residue, delaying the occurrence and the development of drug resistance and the like.
Description
Technical Field
The invention belongs to the field of agricultural herbicides, and particularly relates to an agricultural field herbicide composition and application thereof.
Background
In recent years, the development and yield expansion of the oil industry increase the demand of peanut raw materials, and promote the development acceleration of peanuts in northern China. The herbicide is a common measure for weed control in the peanut field at present, and has important effects on promoting the peanut yield to be improved and saving the planting cost.
There are three main types of weeds in peanut fields: grassy weeds, broadleaf weeds and cyperaceae weeds, wherein the Huang-Huai river basin is mainly grassy. The optimal herbicide application period is 2-4 leaf periods of weeds, otherwise, the weeds are too small, a part of the weeds grow at the later period, the weeds are too large, the resistance is high, and the weeds are not completely killed. Common post-emergence herbicides mainly comprise quizalofop-p-ethyl, clethodim, fluoroglycofen-ethyl, bentazone, fomesafen, lactofen and the like, but the post-emergence herbicide is greatly influenced by external factors such as weather, seedling conditions, grass conditions and the like when applied.
The metolachlor can inhibit the growth and the germination of weeds and the synthesis of seed proteins through systemic action, conduct upwards through the absorption of sprouts, and can ensure that sensitive weeds are poisoned and killed before or just after emergence after germination by inhibiting the growth of the sprouts and roots. Flufenacet belongs to aryloxyacetanilide herbicides, mainly plays a role by inhibiting cell division and growth, and the tolerance of crops to flufenacet is attributed to the rapid detoxification of flufenacet by glutathione transferase in crops, so that the flufenacet can be used before or in early stage after seedling.
When the metolachlor and the flufenacet are singly used, certain defects and limitations exist, and when the metolachlor and the flufenacet are compounded with other components, the effect is difficult to realize, so that the dosage of the herbicide is increased, and more residues are remained. Therefore, only reasonable chemical herbicide formulation or compounding is one of the most effective ways to solve the above problems.
Disclosure of Invention
The invention provides an agricultural field herbicide composition and application thereof, and the composition has the positive characteristics of expanding a weeding spectrum, improving the control effect, prolonging the application suitable period, reducing the dosage, reducing the phytotoxicity, reducing the residue, delaying the occurrence and development of drug resistance and the like.
The invention provides an agricultural field herbicide composition, which comprises effective components and auxiliary components, wherein the effective components consist of flufenacet and metolachlor in a weight ratio of 1:40-40: 1.
Preferably, the weight ratio of the effective components flufenacet and metolachlor is 2:1-1: 3.
Preferably, the effective components of flufenacet and metolachlor account for 5 to 80 percent of the weight percentage of the agricultural field herbicide.
Preferably, the auxiliary components comprise a carrier and an auxiliary agent.
Preferably, the carrier is one or more of water or filler, and the auxiliary agent at least comprises one surfactant.
Preferably, the surfactant comprises one or more of an emulsifier, a dispersant, a wetting agent or a penetrant; the auxiliary agent also comprises one or more of a solvent, a diluent, a filler, a spreader, a stabilizer, a controlled release agent, a synergist, a dust-proof agent, an anti-drift agent, a phytotoxicity reducing agent, a defoaming agent, a foaming agent, a warning pigment, a thickening agent or a thixotropic agent.
Preferably, the agricultural field herbicide composition is in the form of wettable powder, soluble powder, suspending agent, suspoemulsion, dispersible oil suspending agent, aqueous emulsion, microemulsion, missible oil, soluble granules or water dispersible granules.
In another aspect of the invention, the application of the agricultural field herbicide composition in any technical scheme in controlling annual weeds in peanut fields is provided.
In a further aspect, the invention provides an application of the agricultural field herbicide composition in any one of the technical schemes in controlling weeds before crop planting or before emergence of seedlings after sowing.
The herbicide provided by the invention is used for preventing and treating gramineous weeds, broadleaf weeds and cyperaceous weeds in peanut fields, wherein the gramineous weeds mainly comprise crabgrass, goosegrass herb, green bristlegrass herb, cockspur grass, poa pratensis and the like, the broadleaf weeds mainly comprise acalypha australis, redroot amaranth, amaranthus pallidum, purslane, piemarker, field bindweed, thrashing flower, dayflower, goosegrass, feather cockscomb, gooseberry, chenopodium album, morning glory, sedge and the like, and the cyperaceous weeds mainly comprise cyperus rotundus, so that the application dosage of each effective component can be effectively reduced while preventing and treating, the cost is reduced, and the pollution is reduced.
Compared with the prior art, the invention has the advantages and positive effects that:
1. the flufenacet and the metolachlor which are effective components in the herbicide composition can be used separately, sequentially or simultaneously, annual gramineae and broadleaf weeds can be effectively controlled, and a good control effect on part of tall weeds is achieved;
2. the herbicide composition provided by the invention reduces the dosage of pesticide, reduces the residual quantity of the pesticide on crops, and reduces environmental pollution;
3. the herbicide composition provided by the invention can effectively slow down the resistance of weeds, is highly safe to the peanuts and reduces the risk of phytotoxicity;
4. the herbicide composition provided by the invention is low in cost, convenient in preparation process and suitable for large-area popularization and application.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention provides an agricultural field herbicide composition, which comprises effective components and auxiliary components, wherein the effective components comprise flufenacet and metolachlor in a weight ratio of 1:40-40: 1.
In the above examples, in order to ensure good herbicidal effects and synergistic effects of the compounded herbicide composition, the weight ratio of the effective ingredients flufenacet and metolachlor was set to 1:40-40: 1. Within the above range, the herbicidal effect of the effective ingredients shows a good addition or synergistic effect, for example, the weight ratio of the effective ingredients flufenacet to s-metolachlor may be 35:1, 30:1, 25:1, 20:1, 15:1, 10:1, 5:1, 1:1, 1:3, 1:4, 1:5, 1:10, 1:15, 1:20, 1:25, 1:30, 1:35, etc. However, it is understood that the ratio of flufenacet to s-metolachlor can be selected by one skilled in the art according to the required weight ratio, and the ratio can be any value within the above weight ratio range according to the concentration of the effective components during the use.
In a preferred embodiment, the weight ratio of the effective components flufenacet and metolachlor is 2:1-1: 3.
In the preferred embodiment, the weight ratio of the effective components of flufenacet and metolachlor is further limited, the weight ratio of the effective components of flufenacet and metolachlor is 2:1-1:3, and good weeding effect can be achieved within the preferable limited range. For example, the weight ratio of the effective ingredients flufenacet to s-metolachlor may be the equivalent of 1.5:1, 1:1.5, 1:2, 1:2.5, or any other value within the above-defined range.
In a preferred embodiment, the effective components of flufenacet and metolachlor account for 5 to 80 percent of the weight percentage of the agricultural field herbicide.
In the preferred embodiment, the effective components of flufenacet and metolachlor account for 5 to 80 percent by weight of the weeding composition, and are preferably 10 to 70 percent by weight. The specific addition amount can be determined according to the application area and the type of the abamectin and the diproprionate, for example, the mass of the abamectin and the diproprionate can account for 15%, 20%, 25%, 30%, 35%, 40%, 45%, 50%, 55%, 60%, 65%, 70%, 75% and the like, or any other value within the above-defined range.
In a preferred embodiment, the adjunct ingredients include carriers and adjuvants. The carrier is one of water or filler, the water is preferably deionized water, and the auxiliary agent at least comprises one surfactant.
In the above embodiments, the filler is selected from a mixture of one or more of kaolin, diatomaceous earth, bentonite, attapulgite, white carbon, starch, or light calcium carbonate.
The surfactant comprises one or more of an emulsifier, a dispersant, a wetting agent or a penetrant; the auxiliary agent also comprises one or more of a solvent, a diluent, a filler, a spreader, a stabilizer, a controlled release agent, a synergist, a dust-proof agent, an anti-drift agent, a phytotoxicity reducing agent, a defoaming agent, a foaming agent, a warning pigment, a thickening agent or a thixotropic agent.
The surfactant is a single agent or a compound preparation of a common nonionic surfactant or an anionic surfactant.
The emulsifier is selected from mixed emulsion composed of one or more of agricultural emulsion 500# (calcium alkyl benzene sulfonate), OP series phosphate ester (nonylphenol polyoxyethylene ether phosphate ester), 600# phosphate ester (phenylphenol polyoxyethylene ether phosphate ester), styrene polyoxyethylene ether ammonium sulfate salt, magnesium salt of alkyl diphenyl ether disulfonate, triethanolamine salt, agricultural emulsion 400# (benzyldimethylphenol polyoxyethylene ether), agricultural emulsion 700# (alkylphenol formaldehyde resin polyoxyethylene ether), Ningru 36# (phenethylphenol formaldehyde resin polyoxyethylene ether), agricultural emulsion 1600# (phenethylphenol polyoxyethylene polypropylene ether), ethylene oxide-propylene oxide block copolymer, AEOP series (nonylphenol polyoxyethylene ether), BY series (castor oil polyoxyethylene ether), agricultural emulsion 33# (alkylaryl polyoxyethylene polyoxypropylene ether), span series (sorbitan monostearate), Tween series (sorbitan fatty acid ester polyoxyethylene ether) or AEO series (fatty alcohol polyoxyethylene ether) A compound (I) is provided.
The dispersing agent is selected from one or a mixture of a plurality of polycarboxylate, lignosulfonate, alkylphenol polyoxyethylene ether formaldehyde condensate sulfate, calcium alkylbenzene sulfonate, naphthalene sulfonic acid 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 one or more of sodium dodecyl sulfate, sodium dodecyl benzene sulfonate, nekal BX, wetting penetrant F, saponin powder, silkworm excrement or soapberry powder.
The penetrating agent is selected from one or a mixture of more of penetrating agent JFC (fatty alcohol-polyoxyethylene ether), penetrating agent T (diisooctyl maleate sulfonate), azone or organic silicon.
The antifreezing agent is a mixture consisting of one or more of ethylene glycol, propylene glycol, glycerol or urea.
The thickening agent is selected from one or more of xanthan gum, polyvinyl alcohol, bentonite, carboxymethyl cellulose or magnesium aluminum silicate.
The stabilizer is selected from one or more of epoxidized soybean oil, epichlorohydrin, BHT, ethyl acetate or triphenyl phosphate.
The disintegrating agent is selected from one or more of bentonite, urea, ammonium sulfate, aluminum chloride, low-substituted hydroxypropyl cellulose, lactose, citric acid, succinic acid or sodium bicarbonate.
The defoaming agent is selected from one or a mixture of more of silicone oil, silicone compounds, C10-C20 saturated fatty acid compounds or C8-C10 fatty alcohol compounds.
In a preferred embodiment, the agricultural field herbicide composition is in the form of wettable powder, soluble powder, suspending agent, suspoemulsion, dispersible oil suspending agent, aqueous emulsion, microemulsion, missible oil, soluble granules or water dispersible granules.
The invention also provides application of the agricultural field herbicide composition in preventing and killing annual weeds in paddy fields or preventing and killing weeds before crop planting or before emergence of seedlings after sowing.
In order to more clearly and specifically describe the agricultural field herbicide composition and the application thereof provided by the embodiments of the present invention, the following description will be given with reference to specific embodiments. The percentage in the embodiment is weight percentage, and the treatment dosage of the field drug effect is the dosage of the effective components.
1. Wettable powder
The preparation method comprises the following steps: according to the formula proportion of the embodiment, the effective components of flufenacet and metolachlor are added into a carrier, and a surfactant and other functional additives are added into the carrier, mixed, subjected to air flow crushing and then mixed to prepare the wettable powder.
Example 1: (55% flufenacet-s-metolachlor wettable powder) 10:1
The formula is as follows: flufenacet, 50%; 5% of s-metolachlor; wetting agent sodium dodecyl sulfate, 2%; dispersant calcium lignosulfonate, 8%; 20% of filler white carbon black, and the balance of filler kaolin.
Example 2: (48% flufenacet-s-metolachlor wettable powder) 7:1
The formula is as follows: flufenacet, 42%; 6% of s-metolachlor; wetting agent sodium dodecyl sulfate, 2%; dispersant calcium lignosulfonate, 8%; 20% of filler white carbon black, and the balance of filler kaolin.
2. Water dispersible granule
The preparation method comprises the following steps: adding the effective components flufenacet and metolachlor into a carrier according to the formula proportion of an embodiment, adding a surfactant and other functional auxiliaries, mixing, carrying out jet milling, adding 10-25% of water, kneading, granulating, drying and screening to obtain water dispersible granules; or spraying water to the pulverized powder in a boiling granulator, granulating, drying, and sieving to obtain water dispersible granule.
Example 3: (60% flufenacet-s-metolachlor water dispersible granules) 5:1
The formula is as follows: flufenacet, 50%; 10% of s-metolachlor; wetting agent sodium dodecylbenzene sulfonate, 3%; 8% of dispersant alkyl naphthalene sulfonate formaldehyde condensate; 25% of filler white carbon black, and the balance of filler attapulgite.
3. Suspoemulsion formulation
The preparation method comprises the following steps: adding the effective component of the metolachlor into a solvent and a surfactant according to the proportion of the formula of the embodiment, adding water, uniformly mixing, and preparing the mixture into an aqueous emulsion by high-speed shearing; adding flufenacet into a carrier, adding a surfactant and other functional auxiliaries, adding water, uniformly mixing, performing high-speed shearing and wet sanding to obtain a suspending agent, and finally, performing high-speed shearing and homogeneous filtration on the obtained suspending agent and the aqueous emulsion to obtain the product.
Example 4: (36% flufenacet-s-metolachlor suspoemulsion) 3:1
The formula is as follows: flufenacet, 27%; 9% of s-metolachlor; solvent n-hexane, the amount is 10%; the emulsifier is selected from agricultural milk 500# and agricultural milk OP-10# with the dosage of 5% and 4% respectively; dispersant polycarboxylate, 6%; the thickening agent is selected from xanthan gum and aluminum magnesium silicate, and the using amounts are 0.1% and 1.0% respectively; 3% of antifreezing agent glycol; water and the balance.
4. Dispersible oil suspension
The preparation method comprises the following steps: according to the formula proportion, the effective components of flufenacet, metolachlor, surfactant and other functional additives are sequentially placed in a reaction kettle, oil is added and mixed uniformly, and the product is obtained through high-speed shearing, wet sanding and finally homogeneous filtration.
Example 5: (30% flufenacet-s-metolachlor dispersible oil suspending agent) 2:1
The formula is as follows: 20% of flufenacet; 10% of s-metolachlor; emulsifier agricultural emulsion BY-125, 7%; oil dispersant polycarboxylate, 8%; the thickening agent is organic bentonite, and the use amount of the organic bentonite is 1.6 percent respectively; oil, the balance.
Example 6: (30% flufenacet-s-metolachlor dispersible oil suspending agent) 1:1
The formula is as follows: flufenacet, 15%; s-metolachlor, 15%; emulsifier agricultural emulsion BY-125, 8%; oil dispersant polycarboxylate, 10%; the thickening agent is organic bentonite, and the use amount of the organic bentonite is 1.4 percent respectively; oil, the balance.
5. Emulsifiable concentrate
The preparation method comprises the following steps: according to the proportion of the formulation of the embodiment, the effective components of flufenacet and metolachlor are completely dissolved by a solvent and a cosolvent, then an emulsifier is added, the mixture is uniformly mixed, and the emulsifiable concentrate preparation can be prepared after full stirring.
Example 7: (30% flufenacet-s-metolachlor emulsifiable concentrate) 1:2
The formula is as follows: 10% of flufenacet; 20% of s-metolachlor; emulsifier nonylphenol polyoxyethylene ether, 6%; agricultural milk 500#, 5%; cosolvent dimethylformamide, 8%; n-methylpyrrolidone, 20%; mineral spirit No. 150, the rest.
6. Aqueous emulsion
The preparation method comprises the following steps: according to the formula proportion, after the effective components of flufenacet and metolachlor are completely dissolved by a solvent and a cosolvent, an emulsifier is added and stirred to form an oil phase, an antifreezing agent, water and the like are prepared and uniformly mixed to form a water phase, the oil phase is dropwise added into the water phase under the condition of high-speed shearing, and after 1 hour of shearing, the product is finally obtained by homogenizing and filtering.
Example 8: (20% flufenacet-s-metolachlor aqueous emulsion) 1:3
The formula is as follows: 5% of flufenacet; s-metolachlor, 15%; 10% of dimethylbenzene; n-methylpyrrolidone, 20%; isopropanol, 5.0%; 10% of alkylaryl polyoxyethylene polyoxypropylene ether; pesticide emulsion BY-125, 4%, antifreeze ethylene glycol, 3%, water and the balance.
7. Microemulsion preparation
The preparation method comprises the following steps: according to the formula proportion of the embodiment, the effective components of flufenacet and metolachlor are completely dissolved by using a solvent and a cosolvent, then other auxiliary agents are added and uniformly mixed, finally water is added, and the mixture is fully stirred to obtain the finished product preparation. The main equipment comprises a batching kettle and a stirring kettle.
Example 9: (24% flufenacet-S-metolachlor microemulsion) 1:5
The formula is as follows: 4% of flufenacet; 20% of s-metolachlor; 10% of dimethylformamide; n-methylpyrrolidone, 20%; isopropanol, 15.0%; 15% of alkylaryl polyoxyethylene polyoxypropylene ether; water and the balance.
Example 10: (22% flufenacet-S-metolachlor microemulsion) 1:10
The formula is as follows: flufenacet, 2%; 20% of s-metolachlor; 10% of dimethylformamide; n-methylpyrrolidone, 15%; isopropanol, 10.0%; 16% of alkylaryl polyoxyethylene polyoxypropylene ether; water and the balance.
The herbicide composition is subjected to indoor biological activity determination and field pesticide effect verification.
Indoor biological activity determination: activity determination test of flufenacet and metolachlor mixed and matched peanut field switchgrass and shepherd's purse
Firstly, the weeding effect of flufenacet, metolachlor and different mixed combinations thereof on broomcorn millet is measured under the greenhouse potting condition, the combined action is evaluated, and scientific basis is provided for the formulation development of mixed medicaments and the field pesticide effect test of pesticide registration.
The test method is as follows: test targets: broomcorn millet/shepherd's purse; test agents: flufenacet 95% and metolachlor 98% are provided by Qingdao Hansheng Biotechnology GmbH.
Preparation of the medicament: flufenacet solution: accurately weighing 0.1075g of 95% flufenacet technical product, fully dissolving the flufenacet technical product with 0.2mL of acetone, adding 400mL of clear water of 0.1% Tween 80 emulsifier, uniformly stirring to prepare 400g of a.i./ha solution of flufenacet, and diluting the solution into 300, 200, 100, 50, 40, 30, 20 and 10g of a.i./ha solution for later use by using clear water.
S-metolachlor solution: accurately weighing 0.1075g of 98% s-metolachlor raw drug, fully dissolving the raw drug in 0.2mL of acetone, adding 400mL of clear water containing 0.1% of Tween 80 emulsifier, uniformly stirring to prepare a 400ga.i./ha solution of the s-metolachlor, and diluting the solution into 300, 200, 100, 50, 40, 30, 20 and 10g of a.i./ha solution by using clear water for later use.
Blank control solution: 0.2mL of acetone plus 80mL of water with 0.1% Tween 80 emulsifier.
The test method comprises the following steps: adopting a potted stem and leaf treatment method (NY/T1155.4-2006): filling quantitative soil in a plastic pot with the height of 6cm and the diameter of 9cm, sowing 15-20 weed seeds to be tested in the plastic pot, covering with fine soil with the thickness of 0.5-1 cm, culturing in a greenhouse, carrying out stem leaf spraying treatment when weeds grow to 1-3 leaves, spraying 1mL of pesticide liquid in each pot, repeating the treatment for 4 times, and setting the treatment without a pesticide as a control. After treatment, the weeds are cultured in a greenhouse, the growth condition of the target weeds is observed regularly, the damage symptoms and the growth inhibition condition of the target weeds are observed visually after 15 days, the fresh weight of the overground part or the fresh weight of the plant is weighed, and the toxicity of the medicament on the target weeds is evaluated according to the fresh weight inhibition rate of the report. The investigation method comprises the following steps: after 15 days of test treatment, visual inspection is carried out on target damage symptoms and growth inhibition conditions, the fresh weight of the overground part or the fresh weight of the plant is weighed, and the fresh weight inhibition rate (%)
The combined action evaluation method comprises the following steps:
the mode of action of the herbicide combinations was evaluated according to the Gowing method (NY/T1155.7-2006), which is formulated as follows: e0 ═ X + Y-XY/100
In the formula, X is the fresh weight inhibition rate of flufenacet to target weeds when a certain dosage is used singly;
y is the fresh weight inhibition rate of the metolachlor to the target weeds when a certain dosage is used singly;
e0 is the theoretical value of the fresh weight inhibition rate of the flufenacet and the metolachlor when being mixed for use on the target weeds;
e is the measured value of the fresh weight inhibition rate of the flufenacet and the metolachlor when the flufenacet and the metolachlor are mixed for use on the target weeds.
Evaluation criteria: synergistic effect is indicated when E-E0 > 10%, additive effect is indicated when-10% ≦ E-E0 ≦ 10%, and antagonistic effect is indicated when E-E0 < -10%.
TABLE 1 toxicity test results of flufenacet and s-metolachlor and their mixture combination on wild millet
And (3) evaluating the drug effect: the results of the measurement of the weeding effect of flufenacet and metolachlor and the mixed composition thereof on the broomcorn millet are shown in table 1. It can be seen that flufenacet and s-metolachlor both exhibit additive effects with positive values of E-E0 in the range of 1:40 to 40:1, wherein the blended compositions of 2:1, 1:1, 1:2, 1:3 exhibit very good effects on broomcorn millet and E-E0 values of greater than 10% exhibit synergistic effects with a maximum value of 15.27.
TABLE 2 toxicity test results of flufenacet and metolachlor and their mixture combination against shepherd's purse
And (3) evaluating the drug effect: the results of the measurement of the weeding effect of flufenacet, metolachlor and the mixed composition thereof on shepherd's purse are shown in Table 2. As can be seen, the flufenacet and the metolachlor both show additive effects by taking the E-E0 value in the range of 1:40 to 40:1 as positive, wherein the mixed composition with the ratio of 1:3, 1:2, 1:1, 2:1 has good effect on the shepherd's purse, the E-E0 values of the mixed composition are all more than 10 percent and show synergistic effect, and the maximum value is 14.89.
And (3) field drug effect verification: field efficacy test of flufenacet and metolachlor for controlling weeds in peanut fields
The prevention and treatment medicament comprises: the compound composition of flufenacet and s-metolachlor is developed and produced by the national Vast Biotechnology Limited company;
control agents: 41% flufenacet suspension (commercially available); 960g/L s-metolachlor emulsifiable concentrate (commercially available).
Artificial weeding and clear water contrast treatment are adopted.
The using method comprises the following steps: adding 30 liters of water per mu, and uniformly treating the soil in each community.
The application time is as follows: in 2018, in 4 and 28 days, 1 day after peanut seeding, annual gramineae and broadleaf weeds are mainly used in the field, and soil treatment is carried out for 1 time.
The application site is as follows: peanut field in suburb of Laxi province of Shandong province
Investigation method and drug effect calculation
The weed subjects were investigated as: weeds such as barnyard grass, large crabgrass, wild millet, shepherd's purse, quinoa and cleavers are investigated, and the weed control effect is achieved 30 days and 45 days after investigation, and the fresh weight control effect is achieved 45 days.
Visual test shows that the pesticide has no harm to the peanut.
The test results and analysis are shown in tables 3 and 4, respectively.
TABLE 3 herbicidal composition of the present invention having an effect of controlling weeds in a peanut field 30 days after application of the composition
TABLE 4 herbicidal composition of the present invention applied 45 days after the herbicidal composition had been applied to the peanut field
Tables 3 and 4 show that flufenacet and metolachlor are compounded to have good control effects on barnyard grass, digitaria sanguinalis, broomcorn millet, chenopodium quinoa, shepherd's purse, cleavers and the like, the control effect is superior to the single-agent control effect, the difference between the control effect and the yield increase of a control medicament, artificial weeding and clear water control treatment is obvious, and the flufenacet and the metolachlor have good quick action and persistence and are safe to peanuts in the application range of the experiment.
Claims (9)
1. The agricultural field herbicide composition is characterized by comprising effective components and auxiliary components, wherein the effective components consist of flufenacet and metolachlor in a weight ratio of 1:40-40: 1.
2. An agricultural field herbicide composition as claimed in claim 1, wherein the weight ratio of the effective ingredients flufenacet and metolachlor is 2:1-1: 3.
3. The agricultural field herbicide composition of claim 1 or 2, wherein the effective ingredients flufenacet and metolachlor are present in the agricultural field herbicide in an amount of 5 to 80% by weight.
4. An agricultural field herbicide composition as claimed in claim 1, wherein the adjuvant comprises a carrier and an adjuvant.
5. An agricultural field herbicide composition as claimed in claim 4, wherein said carrier is one or more of water or a filler, and said adjuvant comprises at least one surfactant.
6. An agricultural field herbicide composition as claimed in claim 5, wherein the surfactant comprises one or more of an emulsifier, a dispersant, a wetting agent or a penetrant; the auxiliary agent also comprises one or more of a solvent, a diluent, a filler, a spreader, a stabilizer, a controlled release agent, a synergist, a dust-proof agent, an anti-drift agent, a phytotoxicity reducing agent, a defoaming agent, a foaming agent, a warning pigment, a thickening agent or a thixotropic agent.
7. The agricultural field herbicide composition of claim 3 or 4, wherein the formulation of the agricultural field herbicide composition is wettable powder, soluble powder, suspension, suspoemulsion, dispersible oil suspension, aqueous emulsion, microemulsion, emulsifiable concentrate, soluble granules or water dispersible granules.
8. Use of an agricultural field herbicide composition as claimed in any one of claims 1 to 7 for controlling annual weeds in peanut fields.
9. Use of an agricultural field herbicide composition as claimed in any one of claims 1 to 7 for controlling pre-planted or post-sown pre-emergent weeds.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1180993A (en) * | 1995-04-12 | 1998-05-06 | 诺瓦提斯公司 | Synergistic herbicidal compositions of metolachlop |
| JP2010163411A (en) * | 2008-12-17 | 2010-07-29 | Bayer Cropscience Ag | Herbicidal composition |
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2020
- 2020-03-11 CN CN202010165860.6A patent/CN111264541A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1180993A (en) * | 1995-04-12 | 1998-05-06 | 诺瓦提斯公司 | Synergistic herbicidal compositions of metolachlop |
| JP2010163411A (en) * | 2008-12-17 | 2010-07-29 | Bayer Cropscience Ag | Herbicidal composition |
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