A herbicidal yield-enhancing composition and use thereof

Abstract

The application belongs to the technical field of pesticides, and particularly relates to a herbicidal yield-increasing composition with 2,4-D butyric acid, trifluratom and bentazon as effective components and application thereof. The composition is 2,4-D butyric acid, trifluratom and bentazon, and the mass ratio of 2,4-D butyric acid, trifluratom and bentazon is (1-30):(1-16):(1-75). The herbicidal yield-increasing composition has high herbicidal activity, can increase the yield of peanuts, has ternary compounding, synergistic effect, a wide weed spectrum, a long effective period and high safety, and is not prone to resistance.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of pesticides, and particularly relates to a herbicidal yield-increasing composition containing 2,4-D butyric acid, trifluratom and bentazon as active ingredients and application thereof. BACKGROUND

[0002] Peanut field weeds mainly include grasses, broadleaf weeds and sedge, grasses account for 60%, broadleaf weeds account for 30%, and sedge accounts for 10%. On the market, the main herbicides for grasses are clethodim, pyriftalid and high-efficiency haloxyfop, which are safe for peanuts and can effectively control grasses, and no obvious resistance is generated in most areas. Bentazon can be used to effectively control sedge. The main herbicides for broadleaf weeds are trifluratom, fomesafen, flurichloride, bentazon and chlorosulfonamid. Fomesafen and flurichloride are prone to cause phytotoxicity to peanuts, resulting in leaf spots. Chlorosulfonamid has a high use cost. The most commonly used herbicide on the market is a mixture of trifluratom and bentazon, but the effect of the mixture on ducktoe grass, acacia, and old grey cabbage is poor. For the control of broadleaf weeds in the field, trifluratom and bentazon are used to control weeds in peanut fields all year round, which is prone to cause drug resistance and increase the use amount and cause phytotoxicity. At present, the solution to the problem of high toxicity and poor effect of single pesticide is to use a mixture of herbicides. However, it is unpredictable whether the use of a mixture of herbicides can delay the generation of drug resistance and achieve ideal use effect, and it is a research hotspot in the field of pesticides. SUMMARY

[0003] The present application aims to provide a herbicidal yield-increasing composition containing 2,4-D butyric acid, trifluratom and bentazon as active ingredients and application thereof, which is safe, low in toxicity, high in efficiency, good in speed and long in effective period, is beneficial to expand the herbicidal spectrum, and can comprehensively control weeds in peanut fields and increase the yield of peanuts.

[0004] In order to achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0005] A herbicidal yield-increasing composition, the composition is 2,4-D butyric acid, trifluratom and bentazon, and the mass ratio of 2,4-D butyric acid: trifluratom: bentazon is (1-30):(1-16):(1-75).

[0006] The mass ratio of 2,4-D butyric acid: trifluratom: bentazon is (15-30):(12-16):(50-75).

[0007] Application of the herbicidal yield-increasing composition, the composition is used in the preparation of herbicides for preventing and controlling weeds in peanut fields.

[0008] The weeds in the peanut field are one or more of acacia constricta, solanum nigrum, limnophila rugosa, xanthium strumarium, amaranthus retroflexus, bidens pilosa, polygonum lapathifolium, portulaca oleracea, ipomoea hederifolia, galium aparine, sonchus oleraceus, cyperus iria, one or more of the above.

[0009] The use of the herbicide composition for increasing the yield of peanuts.

[0010] The herbicide for preventing weeds in the peanut field, the herbicide is mixed with the agricultural adjuvant allowed by the composition as an active ingredient; wherein the active ingredient is 0.1-99% of the mass of the herbicide.

[0011] The adjuvant is one or more of emulsifiers, stabilizers, thickeners, preservatives, solvents, antifoaming agents, carriers, and fillers.

[0012] The adjuvant can be one or more of solvents (ethoxylated castor oil, water, alcohols, ketones, solvent oil, methyl oleate), penetrants (alcohol ethylene oxide condensate, fatty alcohol ethylene oxide condensate, sorbitol ester, glycerol), stabilizers (sulfated hexadecyl-heptadecyl-octadecyl alcohol and sulfated fatty alcohol glycol ether, alkyl aryl polyether alcohol, alkyl phenol formaldehyde resin polyoxyethylene ether, polyoxyethylene alkyl ether, xanthan gum, magnesium aluminum silicate, sodium benzoate, organic bentonite, ammonium sulfate), emulsifiers (sulfosuccinate, taurine derivatives and alcohol phosphates or polyhydroxy ethylated phenol phosphates, alkyl sulfates, lauryl ether sulfate, fatty alcohol sulfate, lauryl alcohol polyethylene glycol ether acetal, castor oil polyoxyethylene ether, tristyryl phenol polyoxyethylene ether phosphate, calcium dodecylbenzenesulfonate, polyoxyethylene sorbitan monooleate, sodium dodecyl sulfate), wetting agents (sulfosuccinate, alkyl sulfonate, alkyl aryl sulfonate, octyl phenol, nonyl phenol), dispersants (polyacrylate, lignin sulfonate, phenol sulfonic acid or naphthalene sulfonate, polymers of ethylene oxide with aliphatic alcohol or with aliphatic acid or with aliphatic amine and substituted phenol, lignosulfite waste liquor, condensate of naphthalene or naphthalene sulfonic acid with phenol and formaldehyde, sodium lignosulfonate, naphthalene sulfonate, calcium lignosulfonate, naphthalene sulfonate sodium salt formaldehyde condensate), thickeners, PH adjusters, antifoaming agents (polyoxyethylene octyl phenyl ether, ethoxylated isooctyl ether, alkyl phenyl polyethylene glycol ether, tributyl phenyl polyethylene glycol ether, tristearoyl phenyl polyethylene glycol ether, polyvinyl alcohol, ethoxylated polyoxypropylene, block polyether), antifreeze agents, carriers, and fillers (white carbon, kaolin, protein, denatured protein, polysaccharide, hydrophobically modified starch, polycarboxylate, polyoxyalkylate, polyvinylamine, polyvinylpyrrolidone and copolymer, clay, natural or synthetic silicate, silicon dioxide, resin), and the like.

[0013] The dosage form of the herbicide is soluble liquid, water dispersible granules, dispersible oil, water suspension, or wettable powder.

[0014] The present application has positive effects: (1) the weeding and yield-increasing composition of the present application is safe for peanuts, accelerates peanut needle, promotes peanut fruit setting, and increases peanut yield; (2) the weeding and yield-increasing composition of the present application is ternary mixed, complementary, and synergistic; (3) the weeding composition of the present application has a wide herbicidal spectrum and a long persistence period; (4) the weeding composition of the present application is highly safe: the herbicide composition avoids the risk of phytotoxicity caused by excessive use of a single herbicide; when monochloroacetic acid is used alone, a high dose is very unsafe for rice; when the three are mixed, the dose of each is reduced, and the safety to crops is improved. (4) The weeding composition of the present application delays weed resistance: with the continuous increase in the use amount of a single herbicide year after year, weeds are prone to develop resistance. The use of the mixed composition for stem and leaf treatment can effectively control most weeds in peanut fields, delay weed resistance, and prolong the service life of herbicides. DETAILED DESCRIPTION

[0015] The specific embodiments of the present application will be described in detail below in conjunction with examples, but it should be understood that the protection scope of the present application is not limited by the specific embodiments.

[0016] Indoor activity determination:

[0017] Test agents: 95% 2,4-D butyric acid technical material and 95% bentazone technical material are from Liaoning Xianda Agricultural Science Co., Ltd.; 88% trifluroxysulfon-silicate technical material is from Jiangsu Changqing Agricultural Chemicals Nantong Co., Ltd.;

[0018] Test targets: Commelina communis seeds were collected from Qian'an County, Songyuan City, Jilin Province in 2022; Acalypha australis seeds were collected from Fuyu City, Songyuan City, Jilin Province in 2022;

[0019] Agent configuration design: after the test agent is completely dissolved with DMF, it is added to an aqueous solution containing 0.3% Tween-80, stirred uniformly, prepared into a pesticide solution containing a certain active ingredient, and reserved;

[0020] Test method: a greenhouse potting method was used. The test soil was collected from a non-chemical plot for testing. The test soil was loaded into a flowerpot; the flowerpot was placed in a pot containing water, and the soil was kept moist by bottom irrigation. Commelina communis seeds were sown in the flowerpot, and the soil was covered 1 cm after sowing. The seedlings were transplanted to an artificial climate chamber for culture. During the 2-leaf period, 10 weeds with consistent growth potential were reserved in each pot, and the growth potential was treated by stem and leaf spraying at the 3-4 leaf stage. A 0.3% Tween-80 aqueous solution was sprayed as a blank control. After 21 days of treatment, the fresh weight of the aboveground part of the weeds was weighed, and the fresh weight control effect was calculated.

[0021]

[0022] Evaluation method of combined action: the combined action of herbicides was evaluated according to Colby method (NY / T 1155.7-2006), and the formula was: E0=100-X×Y×Z / 100×100, wherein, X was the percentage of fresh weight of target weeds to control fresh weight when component A was used alone; Y was the percentage of fresh weight of target weeds to control fresh weight when component B was used alone; Z was the percentage of fresh weight of target weeds to control fresh weight when component C was used alone; E0was the theoretical fresh weight control effect of target weeds when components A, B and C were mixed; E was the actual fresh weight control effect of target weeds when components A, B and C were used alone or mixed, and the results were shown in Tables 1-2 (in the absence of special instructions, the effects in the following tables were the effects of stem-leaf spraying treatment).

[0023] Evaluation standard: when E-E0>10%, it was a synergistic effect, when E-E0<-10%, it was an antagonistic effect, and when E-E0was between-10% and 10%, it was an additive effect.

[0024] Table 1 indoor activity determination of each pesticide treatment on Isachne globosa

[0025]

[0026]

[0027] Table 2 indoor activity determination of each pesticide treatment on Acalypha australis

[0028]

[0029]

[0030] From the indoor activity determination of Tables 1 and 2, it could be seen that 2,4-D butyric acid, topramezone and bentazone had poor effects on Isachne globosa and Acalypha australis at different dosages, and could not achieve effective control. The different ratios of ternary combination scheme could achieve synergistic effect, make up for the insufficient herbicidal activity of single preparation and binary combination preparation, and increase the herbicidal spectrum. The ternary combination scheme had obvious synergistic effect, and inhibited the growth of Isachne globosa and Acalypha australis. Therefore, the ternary combination of 2,4-D butyric acid, topramezone and bentazone had rationality and feasibility.

[0031] Field efficacy test:

[0032] a. Test crop: peanut (variety was Silianghong).

[0033] b. Test agent: 30% 2,4-D butyric acid soluble solution from Shandong Xianda Agricultural Chemical Co., Ltd.; 440 g / L fluthiacet-methyl · benthiocarb aqueous solution (wherein the effective components and contents are fluthiacet-methyl 80 g / L and benthiocarb 360 g / L) from Jiangsu Changqing Biological Technology Co., Ltd.

[0034] c. Drug period, peanut 3-5 leaf stage, weed 2-4 leaf stage.

[0035] d. Test method: According to the herbicide composition provided in the examples, field verification is carried out, and the test site is in Songyuan City, Jilin Province. The main weeds in the field are acacia, gray, duck toe grass, and the plot area is 30 m 2 , each treatment is repeated 3 times, and all treatments are normally managed after drug application to ensure that all treatments are consistent in water, fertilizer conditions and field management.

[0036] e. Investigation method: After treatment for 21 days, the treatment area and the control area are observed, the number of remaining weeds is counted, and the plant control effect of the treatment area is calculated, the plant control effect (%),

[0037] Plant control effect (%) = (control weed plant tree number - treatment weed plant number) / control weed plant number x 100 At the same time, at the peanut harvest period, 3 places of peanut with average growth are selected in the test treatment area, and the peanut with a ridge length of 1 meter is used for yield measurement to calculate the average yield.

[0038] f. The safety of each treatment to peanut, yield and plant control effect of acacia are as follows:

[0039]

[0040] After treatment for 21 days, the growth and height of peanut are observed, and all treatments are safe to peanut, and do not affect the normal growth after drug application.

[0041] From the table, it can be concluded that fluthiacet-methyl · benthiocarb alone is not complete, and weeds are partially left. The combination with 2,4-D butyric acid has obvious synergistic effect, and the control effect on weeds gradually increases with the increase of the amount. At the same time, with the gradual increase of the amount of 2,4-D butyric acid, the yield of peanut also increases. When the amount is 20 g a.i. / mu and 30 g a.i. / mu, compared with 10 g a.i. / mu and manual weeding, the yield of peanut is obviously increased, and the difference between the two is not obvious.

[0042] In summary, the herbicidal yield-increasing composition of the present application adopts a three-component active ingredient combination scheme, and the activity and herbicidal effect are the simple superposition of the activity of each component. Compared with the existing single preparation, it has obvious herbicidal effect and synergistic effect, can delay resistance, is safe to crops, and at the same time compared with no drug treatment, has obvious yield-increasing effect on peanut, and meets the safety requirements of pesticide preparation.

Claims

1. Use of a herbicidal yield-enhancing composition, characterized in that, The application of the herbicidal composition in preparing herbicides for preventing and treating weeds in peanut fields; the herbicidal composition is 2,4-D butyric acid, trifluratom and bentazon, and the mass ratio of 2,4-D butyric acid, trifluratom and bentazon is (15-30):(12-16):(50-75); The weeds in the peanut field are one or both of acrocephalus and duck toe grass.

2. The use of a herbicidal yield-enhancing composition according to claim 1, characterized in that: The herbicide is mixed with an agricultural production allowed adjuvant with the herbicidal composition as an active ingredient; wherein the active ingredient is 0.1-99% of the mass of the herbicide.

3. The use of a herbicidal yield enhancing composition according to claim 2, characterized in that: The adjuvant is one or more of emulsifiers, stabilizers, thickeners, preservatives, solvents, antifoaming agents, carriers.

4. The use of a herbicidal yield-enhancing composition according to any one of claims 1 to 3, characterized in that: The dosage form of the herbicide is soluble liquid, water dispersible granules, dispersible oil, water suspension or wettable powder.

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