CN114041470A

CN114041470A - Herbicidal composition containing dichloroclomazone

Info

Publication number: CN114041470A
Application number: CN202111428521.3A
Authority: CN
Inventors: 黄发伟; 郑敬敏; 周大伟; 刘欢
Original assignee: Shaanxi Sunger Road Bio Science Co Ltd
Current assignee: Shaanxi Sunger Road Bio Science Co Ltd
Priority date: 2021-11-29
Filing date: 2021-11-29
Publication date: 2022-02-15

Abstract

The invention belongs to the technical field of compound pesticides, and discloses a weeding composition containing dichloroclomazone and glufosinate/refined glufosinate and application thereof. In the weeding composition, the mass ratio of the dichloroclomazone to the glufosinate/refined glufosinate is (1-7) to (4-40), and the total mass percentage of the dichloroclomazone to the glufosinate/refined glufosinate in the weeding composition is 1-80%. The weeding composition can be used for preparing herbicides for preventing and removing weeds in orchards and non-cultivated lands, and the preparation formulation can be suspending agent, dispersible oil suspending agent, soluble agent and aqueous agent. The weeding composition has obvious synergistic effect by compounding two active ingredients, can reduce the using amount of the medicament, reduce the cost, expand the weed control spectrum, improve the preventing and removing efficiency of the old weeds, delay the generation of drug resistance of the weeds and protect the environment.

Description

Herbicidal composition containing dichloroclomazone

Technical Field

The invention relates to a weeding composition containing dichloroclomazone, belonging to the technical field of compound pesticides.

Background

Dichloroclomazone, english name: bixlozone is an isoxazolinone herbicide developed by Fumei corporation, and the action mechanism of the bisxlozone is that the biosynthesis of carotenoid in sensitive weeds is inhibited, so that the weeds are influenced to obtain energy through photosynthesis, and the drug effect is exerted. The herbicide is a pre-treatment agent for seedlings, can be used for crops such as fruit trees, vegetables, cotton, rice, beet, barley, rape, wheat and the like, and can prevent and kill gramineous weeds and broadleaf weeds. It has wide herbicidal spectrum, contact killing effect and high effect on resistant weed.

Glufosinate, a broad-spectrum contact-type biocidal herbicide, has the action mechanism of inhibiting glutamine synthetase in plant nitrogen metabolic pathway, so as to interfere plant metabolism and kill plants, can be quickly absorbed into the body through stems and leaves when being sprayed on the plants, and can be conducted in xylem by plant transpiration, but can be quickly decomposed and become ineffective by microorganisms in the soil after contacting the soil, so that the glufosinate can be hardly or hardly absorbed by roots. Glufosinate-ammonium has the characteristics of wide herbicidal spectrum, low toxicity, high activity, good environmental compatibility and the like.

The action mechanism of the refined glufosinate-ammonium, also called L-glufosinate-ammonium, is the same as that of a glutamate synthetase inhibitor, but the herbicidal activity is about twice of that of common glufosinate-ammonium, compared with glufosinate-ammonium, the refined glufosinate-ammonium is low in toxicity, safe, easy to degrade in soil, safe to crops, small in drift and safe to adjacent crops.

Generally, the composition communities of the farmland weeds are various, so that a plurality of problems exist in the control process, such as limited control spectrum, difficult control of old weeds, weed resistance and the like. The reasonable mixed herbicide can effectively expand the control spectrum, improve the control effect and delay the generation of resistance.

Disclosure of Invention

The invention aims to provide a weeding composition containing dichloroclomazone, which has reasonable components, low medication cost, obvious synergistic effect, good weeding effect and wide weed control spectrum.

The invention also aims to provide application of the herbicidal composition containing dichloroclomazone in controlling orchard and uncultivated land weeds.

In order to achieve the purpose, the technical scheme of the invention is as follows:

a first active ingredient: dichloroclomazone;

the second active ingredient: glufosinate or glufosinate-ammonium;

the mass ratio of the first active ingredient to the second active ingredient is as follows: (1-7):(4-40).

The herbicidal composition of the dichloroclomazone can be prepared into the dosage forms of suspending agent, dispersible oil suspending agent, soluble agent and aqueous agent according to the method known by the technical personnel in the technical field.

For the suspending agents, usable are: dispersing agents such as one or more of polycarboxylate, lignosulfonate, alkylnaphthalene formaldehyde condensate sulfonate, alkylphenol polyoxyethylene ether phosphate, alkylphenol polyoxyethylene ether sulfonate, phenethyl phenol polyoxyethylene ether phosphate, alkyl polyoxyethylene ether sulfonate, polyoxyethylene polyoxypropylene ether block copolymer, nekal, dodecyl polyoxyethylene ether phosphate, etc.; wetting agents such as one or more of alkylphenol polyoxyethylene ether formaldehyde condensate sulfate, phenethylphenol polyoxyethylene ether phosphate ester, alkylsulfate, alkylsulfonate, alkylnaphthalenesulfonate, alkylphenol formaldehyde resin polyoxyethylene ether, tristyrylphenol polyoxypropylene polyoxyethylene block polymer, and the like; thickening agents such as one or more of xanthan gum, polyvinyl alcohol, bentonite, magnesium aluminum silicate, carboxymethyl cellulose, carboxyethyl cellulose, methyl cellulose, and the like; preservatives such as one or more of formaldehyde, benzoic acid, sodium benzoate, potassium sorbate, isothiazolinone, and the like; defoaming agents such as one or more of silicone oil, silicone compounds, C10-20 saturated fatty acid compounds, C8-10 fatty alcohols, hexanol, butanol, octanol, etc.; antifreeze agents such as one or more of ethylene glycol, propylene glycol, glycerol, polyethylene glycol, sorbitol, urea, inorganic salts, etc.; the water is deionized water.

For dispersible oil suspensions, the adjuvants that can be used are: dispersants such as one or more of polycarboxylates, lignosulfonates, alkylnaphthalenesulfonates, TERSPERSE 2020, and the like; emulsifier such as castor oil polyoxyethylene ether series, emulsifier (BY-110, BY-125, BY-140), one or more of Nongru 700#, Nongru 2201, span-60 #, Tween-60 #, Nongru 1601#, TERSPERSE 4894, etc.; wetting agents such as one or more of alkylphenol polyoxyethylene ether formaldehyde condensate sulfate, alkylphenol polyoxyethylene ether phosphate, phenethylphenol polyoxyethylene ether phosphate, alkyl sulfate, alkyl sulfonate, naphthalene sulfonate, TERSPERSE 2500, and the like; thickening agent such as one or more of white carbon black, polyvinyl alcohol, bentonite, magnesium aluminum silicate, etc.; one or more of antifreeze such as ethylene glycol, propylene glycol, glycerol, urea, inorganic salts such as sodium chloride, etc.; the dispersion medium is selected from one or more of soybean oil, oleum Rapae, wheat oil, methyl oleate, diesel oil, engine oil, mineral oil, etc.

For the solubles, the auxiliaries which can be used are: the emulsifier is selected from one or more of Nongru 700#, Nongru 2201#, span-60 #, Tween-60 #, TX-10, Nongru 1601#, Nongru 600# and Nongru 400 #; solvents such as one or more of methanol, ethanol, acetone, cyclohexanone, dimethylformamide, dimethyl sulfoxide, and N-methylpyrrolidone; and the stabilizer is one or more of triphenyl phosphite, triphenyl phosphate and epoxy chloropropane.

For aqueous solutions, the auxiliaries which can be used are: emulsifier such as one or more of calcium dodecylbenzene sulfonate, alkylphenol formaldehyde resin polyoxyethylene ether, Nongru 2201#, sorbitan monostearate polyoxyethylene ether, octyl phenol polyoxyethylene (10) ether, fatty alcohol polyoxyethylene ether, phenethylphenol polyoxyethylene polyoxypropylene ether, Nongru 600#, Nongru 400#, dodecyl dimethyl benzyl ammonium chloride, etc.; the water is deionized water.

The invention achieves the technical effects that:

1. the compounding of the two active ingredients has obvious synergistic effect, and the dosage of the medicament is reduced;

2. the cost is reduced, the pesticide residue is reduced, and the environment is protected;

3. the weed control spectrum is expanded, and the preventing and removing efficiency of the old weeds is improved;

4. the generation of drug resistance of weeds is delayed.

Detailed Description

The combined action of the dichloroclomazone and glufosinate or glufosinate-ammonium on various grassy weeds and broadleaf weeds is illustrated by indoor toxicity measurement.

The test objects are goosegrass herb and chenopodium album linn.

The test method comprises the following steps: reference is made to part 4 of the agricultural chemical indoor bioassay test criteria herbicide of the agricultural industry standard NY/T1155.4-2006 of the people's republic of China: activity measurement test Stem and leaf spray method. The original drug is prepared into the required test drug, firstly, the single drug and each compound drug are set with 5 different concentration gradients (on the basis of the preliminary test result, the concentration gradients are set differently according to different drug proportions, and the control rate is set according to the geometric progression in the range of 5-90%). And (3) spraying the weeds in a 2-3 leaf stage from low dose to high dose, repeating the spraying treatment for 4 times, and setting clear water as a control. After treatment, the mixture is placed in a greenhouse for culture and observation, water is supplemented in an infiltrating irrigation mode at the bottom of the pot, and the fresh weight control effect of each medicament treatment is calculated 21 days after treatment.

The method comprises the steps of evaluating the combined action of two active ingredients after compounding by adopting a Gowing method, firstly measuring the control effect of a single agent and a mixed agent on target weeds, then calculating the theoretical control effect of the mixed agent through the actual measurement control effect of the single agent, and comparing the theoretical control effect with the actual measurement control effect of the mixed agent to evaluate the type of the combined action.

Calculating the formula: e₀=X+Y-XY/100

Wherein: x is the fresh weight control effect of A when the dosage is P;

y is the fresh weight control effect of B when the dosage is Q;

e0 is the theoretical fresh weight control effect of A + B when the dosage is P + Q;

e is the actually measured fresh weight control effect of each treatment

When E-E₀When the content is more than 10 percent, the compounding generates a synergistic effect; when E-E₀When the content is less than-10 percent, the antagonism is generated by the blending; when E-E₀Values between-10% and 10% indicate that compounding is additive.

TABLE 1 indoor toxicity assay for goosegrass by compounding dichloroclomazone and glufosinate

As can be seen from the table 1, the combination of the dichloroclomazone and the glufosinate has obvious synergistic effect on the eleusine indica at the weight ratio of (1-5) to (8-32).

TABLE 2 indoor toxicity assay for goosegrass by compounding dichloroclomazone and glufosinate

As can be seen from the table 2, the combination of the dichloroclomazone and the refined glufosinate has obvious synergistic effect on the eleusine indica within the weight ratio of (1-5) to (4-16).

TABLE 3 indoor toxicity assay for Chenopodium quinoa by compounding dichloroclomazone and glufosinate

As can be seen from the table 3, the combination of the dichloroclomazone and the glufosinate has obvious synergistic effect on the chenopodium album at the weight ratio of (1-5) to (8-24).

TABLE 4 indoor toxicity assay for Chenopodium quinoa by compounding dichloroclomazone and glufosinate-ammonium

As can be seen from Table 4, the synergistic effect of the dichloroclomazone and the glufosinate-ammonium is obvious under the weight ratio of (1-5) to (4-16).

To better illustrate the invention, the following description of the invention is given in conjunction with formulation examples, the percentages in the formulation being given by weight.

Formulation example 1

Weighing 2% of dichloroclomazone, 32% of glufosinate-ammonium, 5% of sodium alkyl sulfate, 4% of sodium alkyl naphthalene sulfonate, 1% of polyvinyl alcohol, 3% of propylene glycol, 1% of octanol and deionized water to 100% by weight. The raw materials are mixed, sheared and dispersed at a high speed for 30min, and then the mixture is sanded by a sand mill to prepare the 34% suspending agent of dichloroclomazone and glufosinate-ammonium.

Formulation example 2

Weighing 3% of dichloroclomazone, 32% of glufosinate-ammonium, 4% of sodium lignosulfonate, 6% of pesticide emulsion 2201, 4% of span-60 #, 1% of sodium alkyl sulfonate, 1% of bentonite and 4% of propylene glycol, and adding the wheat oil to 100% by weight. The raw materials are mixed, sheared and dispersed at a high speed for 30min, and the mixture is sanded by a sand mill to prepare the 35% dichloroclomazone-glufosinate dispersible oil suspending agent.

Formulation example 3

Weighing 2% of dichloroclomazone, 16% of refined glufosinate-ammonium, 1% of Nongru 500#, 3% of TX-10, 3% of Nongru 1601#, 1% of epichlorohydrin, 8% of N-methyl pyrrolidone and cyclohexanone to 100% by weight. The raw materials are mixed, stirred and dissolved completely to prepare the soluble solution of 18 percent of dichloroclomazone and refined glufosinate.

Formulation example 4

Weighing 3% of dichloroclomazone, 16% of refined glufosinate-ammonium, 3% of pesticide emulsion 2201# and 3% of pesticide emulsion 700#, and adding deionized water to 100% by weight. The raw materials are mixed, stirred and dissolved completely to prepare the 19 percent aqueous solution of the dichloroclomazone and the refined glufosinate.

Biological example 1: and (5) performing pesticide effect test on the non-cultivated land weeds.

The inventors carried out the efficacy tests of formulation example 1, formulation example 2, formulation example 3, formulation example 4, and the control chemical for controlling weeds in non-cultivated land in 2021, and the control effects of the respective chemicals on weeds in non-cultivated land are shown in the following table.

The test method comprises the following steps: the control object is the weeds in non-cultivated land, and the weeds are applied in the normal growth period. The test field has flat vigor, moist soil and moderate fertility, and the cell groups are randomly arranged, with each cell having a length of 25m²Repeating the treatment for 4 times, treating with clear water as blank control, and applying 30kg of liquid medicine per mu by conventional spraying method once every 30 days.

Calculating the formula: plant control effect = (number of plants in control area-number of plants in medicament treatment area)/number of plants in control area x 100%

TABLE 5 results of efficacy test for weed control in uncultivated areas

Remarking: a crab grass, b eleusine indica, c setaria viridis, d caper euphorbia seed, e redroot amaranth, f chenopodium album, g copperleaf herb and h purslane

As can be seen from the table 5, the preparation examples have good control effect on the weeds in the non-cultivated land, the preparation is sprayed for 1 time according to the dosage in the table, and the average control effect on the weeds in the non-cultivated land for 30 days is more than 94 percent, which is obviously superior to the control effect of each control medicament.

In conclusion, the composition adopts a compounding scheme of two active ingredients, the activity and the weeding effect are not simple superposition of the activities of all the ingredients, and compared with the existing single preparation, the composition has the advantages of obvious weeding effect, enlarged weeding spectrum, obvious synergistic effect, reduced dosage and reduced use cost.

Claims

1. A weeding composition containing dichloroclomazone is characterized in that a first active ingredient in the composition is dichloroclomazone, a second active ingredient in the composition is glufosinate-ammonium or refined glufosinate-ammonium, and the mass ratio of the first active ingredient to the second active ingredient is (1-7) to (4-40).

2. A herbicidal composition according to claim 1, characterized in that the mass ratio of the first active ingredient to glufosinate-ammonium is (1-7) to (8-40).

3. The herbicidal composition as claimed in claim 1, wherein the mass ratio of the first active ingredient to glufosinate-ammonium is (1-7) to (4-20).

4. A formulation comprising the herbicidal composition as claimed in claim 1, characterized in that the active ingredient is contained in the formulation in a mass percentage of 1% to 80% by mass.

5. The preparation according to claim 4, wherein the preparation is in the form of a suspension, a dispersible oil suspension, a soluble solution or an aqueous solution.

6. Use of the herbicidal composition according to claim 1 for controlling weeds in uncultivated areas and orchards.

7. Use according to claim 6, characterized in that the weeds are grasses and broadleaf weeds.