CN110771616A - Weeding composition containing oxaziclomefone and pinoxaden and application thereof - Google Patents
Weeding composition containing oxaziclomefone and pinoxaden and application thereof Download PDFInfo
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- CN110771616A CN110771616A CN201911163390.3A CN201911163390A CN110771616A CN 110771616 A CN110771616 A CN 110771616A CN 201911163390 A CN201911163390 A CN 201911163390A CN 110771616 A CN110771616 A CN 110771616A
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- pinoxaden
- oxaziclomefone
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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
- A01N43/90—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having two or more relevant hetero rings, condensed among themselves or with a common carbocyclic ring system
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- 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
- A01N43/86—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 six-membered rings with one nitrogen atom and either one oxygen atom or one sulfur atom in positions 1,3
Abstract
The invention provides a weeding composition containing oxaziclomefone and pinoxaden and application thereof, and belongs to the technical field of pesticides. A weeding composition containing oxaziclomefone and pinoxaden comprises effective amounts of two active ingredients, namely oxaziclomefone and pinoxaden, wherein the weight ratio of the two active ingredients, namely oxaziclomefone and pinoxaden, is 1-20: 20-1. The weeding composition provided by the invention has a very obvious synergistic effect on preventing and removing gramineous weeds in a paddy field, the weeding spectrum is expanded, the using amount of pesticides is reduced, the residual quantity of the pesticides on crops is reduced, the environmental pollution is reduced, and the generation of drug resistance of weeds is greatly delayed.
Description
Technical Field
The invention belongs to the technical field of pesticides, and particularly relates to a weeding composition containing oxaziclomefone and pinoxaden and application thereof.
Background
Rice is the main grain crop in China, and rice field weeding is one of the most main problems in rice production. Chemical weeding is the most economic and effective means in preventing and removing weeds in rice fields, and has the characteristics of low cost, high efficiency, simple and convenient operation, low labor intensity, obvious prevention and control effect and the like, but the problems of drug resistance and resistance evolution of weeds and the like can be caused by long-term continuous high-dose application of a single variety or a single action mode of chemical herbicide. In addition, the weed phase of the paddy field is complex, various weeds such as gramineous weeds, broadleaf weeds and cyperaceae are mixed, the weeds in the paddy field cannot be completely solved by a single variety of herbicide, and the defects or limitations of one aspect can be shown. Hitherto, the reasonable compounding or mixing of different kinds of herbicides has the advantages of expanding the weed spectrum, improving the control effect, delaying the generation of drug resistance and resistance of weeds, and the like, and is one of the most effective methods for solving the problems.
The oxaziclomefone (oxaziclomefone) is developed by two Mitsubishi oil chemical Co., Ltd and the Japanese agricultural cooperation union, belongs to organic heterocycles, has an unknown action mechanism, is an systemic conduction type paddy field herbicide, can prevent and kill various weeds such as barnyard grass, chickweed, moleplant seed, cyperus rotundus L and the like, and particularly has the advantages of high efficiency and long residual effect on the prevention and control of the barnyard grass. After the oxaziclomefone is applied to the paddy field, the oxaziclomefone is mainly absorbed by roots, stems and leaves of weeds, and the stems and leaves of the weeds lose green and stop growing after the weeds are contacted with the pesticide until the weeds die.
Pinoxaden, common english name: pinoxaden. Pinoxaden is a new chemical class-representatives of the phenylpyrazoline class. After it is absorbed by plant, by inhibiting acetyl coenzyme A carboxylase in plant body, fatty acid synthesis is hindered, cell growth and division are stopped, and lipid-containing structure of cell membrane is destroyed, so that weed is killed. After being absorbed by plant leaves, the weeding composition is quickly transferred to growing points of the leaves and stems, then transferred to the whole plant, sensitive weeds stop growing after 48 hours, the leaves of the weeds begin to yellow within 1-2 weeks, the weeds die completely within 3-4 weeks, the weeding composition is safe to rice, has an excellent effect of preventing and treating barnyard grass, and is suitable for preventing and killing weeds such as barnyard grass, moleplant, crabgrass, cricket grass, green bristlegrass and alopecurus pubescens in rice, wheat, soybean, peanut, corn, vegetable fields and orchards.
The reasonable compounding of the herbicide is an effective method for improving the control effect, delaying the succession speed of weed communities, reducing the resistance risk brought by the use of a single variety of herbicide, reducing the pollution to the environment, reducing the use cost and reducing the herbicide residue. The inventor carries out intensive research on the herbicide, finds that the compounding of the oxaziclomefone and the pinoxaden shows a synergistic effect on weeds in the paddy field within a certain compounding ratio range on the basis of a large amount of indoor formula screening tests and field pesticide effect tests, and the compounding and application of the oxaziclomefone and the pinoxaden are not reported at present.
Disclosure of Invention
After a large number of compounding and screening experiments are carried out on the existing agricultural chemical, the invention discovers that the oxaziclomefone and pinoxaden have a synergistic effect on weed control after compounding and combining, the weeding efficiency of the composition is greatly increased, the application dosage is obviously reduced, the safety is obviously improved, the environmental pollution is small, and the weed resistance is reduced.
In order to achieve the above purpose, the invention provides the following technical scheme:
the invention provides a weeding composition containing oxaziclomefone and pinoxaden, which comprises effective amounts of two active ingredients, namely oxaziclomefone and pinoxaden.
Preferably, in the weeding composition, the weight part ratio of the active ingredients, namely oxaziclomefone and pinoxaden, is 1-20: 20-1.
Preferably, in the weeding composition, the weight ratio of the active ingredients, namely oxaziclomefone and pinoxaden, is 1-10: 10-1; further preferably, the weight ratio of the active ingredients, namely oxaziclomefone and pinoxaden, is 1-5: 5-1; more preferably, the weight ratio of the active ingredients, namely oxaziclomefone and pinoxaden, is 1-2: 2-1.
Preferably, in the weeding composition, the sum of the active ingredients, namely oxaziclomefone and pinoxaden, accounts for 1-90% of the total weight of the composition by mass, and the balance is an auxiliary ingredient which is allowed to be added in a pesticide preparation; further preferably, the sum of the weight of the active ingredients, namely oxaziclomefone and pinoxaden, accounts for 5-80% of the total weight of the composition; more preferably, the sum of the weight of the active ingredients, namely oxaziclomefone and pinoxaden, accounts for 15-50% of the total weight of the composition.
When the active ingredient in the herbicidal composition provided by the present invention and other auxiliary ingredients are formulated into a conventional pesticide formulation for agricultural use, the auxiliary agent includes one or more of a wetting agent, a dispersing agent, an emulsifier, a co-surfactant, a thickener, a solvent, a co-solvent, an anti-freezing agent, a disintegrating agent, a preservative, a stabilizer, a film-forming agent, a sachet-forming agent, a pH adjusting agent, an antifoaming agent, a coloring agent, a filler, water, and the like, and the auxiliary agent is a variety of ingredients which are commonly used in the preparation or are agriculturally acceptable, and is not particularly limited, and the specific ingredients and the amounts thereof are determined by experiments as needed.
Specifically, the wetting agent in the weeding composition is selected from one or more of EO/PO block polyether, fatty alcohol polyoxyethylene ether, fatty alcohol ethoxy compound, tallow ethoxy ammonium salt, alkyl naphthalene sulfonate, fatty alcohol polyoxyethylene ether sulfate and acyl glutamate.
Specifically, the dispersing agent in the weeding composition is selected from one or more of condensed naphthalene sulfonate, sodium phenolsulfonic acid condensate, sodium methyl naphthalene sulfonate formaldehyde condensate, sodium lignin sulfonate, sodium methylene dinaphthalene sulfonate, sodium acrylic acid homopolymer, high-molecular polycarboxylate, dioctyl sulfosuccinate, EO/PO block polyether and sodium salt of maleic acid-acrylic acid copolymer.
Specifically, the emulsifier in the herbicidal composition is selected from alkylphenol ethoxylates, benzyl phenol polyoxyethylene ether, phenethylphenol polyoxyethylene ether, fatty alcohol polyoxyethylene ether, phenethylphenol polyoxyethylene ether polyoxypropylene ether, fatty amine polyoxyethylene ether, castor oil ethylene oxide adduct and derivatives thereof, polyol fatty acid ester and ethylene oxide adduct thereof, alkylbenzene sulfonate, alkyl succinate sulfonate, alkyl biphenyl ether sulfonate, naphthalene sulfonic acid formaldehyde condensate, fatty alcohol sulfate, alkylphenol polyoxyethylene ether sulfate, aralkyl phenol polyoxyethylene ether sulfate, alkylphenol polyoxyethylene ether phosphate, phenethylphenol polyoxyethylene ether phosphate, fatty acid polyoxyethylene ester phosphate, alkylamine polyoxyethylene ether phosphate, alkyl phosphate, alkylphenol polyoxyethylene ether formaldehyde condensate, aralkyl phenol polyoxyethylene ether formaldehyde condensate, benzyl phenol polyoxyethylene ether, polyoxyethylene alkyl benzene sulfonate, polyoxyethylene ether sulfonate, polyoxyethylene alkyl benzene sulfonate, polyoxyethylene ether sulfate, polyoxyethylene alkyl sulfonate, alkyl benzene sulfonate formaldehyde, One or more of a diphenol polyoxyethylene ether formaldehyde condensate, a polyoxyethylene polyoxypropylene block copolymer, an alkyl naphthalene sulfonic acid formaldehyde condensate, a phenol formaldehyde condensate sulfonate, an alkyl phenol polyoxyethylene ether formaldehyde condensate sulfate, a methyl cellulose and a derivative thereof, an alkyl ammonium salt, an amino alcohol fatty acid derivative, a polyamine fatty acid derivative, a quaternary ammonium salt, a tallow ethoxy ammonium salt, an alkyl naphthalene sulfonate, an amino acid, an amine oxide, a betaine, a fatty alcohol polyoxyethylene ether sulfate and an acyl glutamate.
Specifically, the cosurfactant in the weeding composition is selected from one or more of n-butyl alcohol, isobutyl alcohol and n-octyl alcohol.
Specifically, the thickening agent in the weeding composition is selected from one or more of xanthan gum, magnesium aluminum silicate, sodium carboxymethyl cellulose, sodium starch phosphate, sodium starch octenyl succinate and polyvinyl alcohol.
Specifically, the solvent in the herbicidal composition is selected from one or more of xylene, rosin-based vegetable oil, methyl oleate and heavy aromatic solvent oil.
Specifically, the cosolvent in the herbicidal composition is selected from one or more of cyclohexanone, N-dimethylacetamide and N, N-dimethylformamide.
Specifically, the antifreezing agent in the herbicidal composition is selected from one or more of ethylene glycol, propylene glycol, isopropanol and urea.
Specifically, the film forming agent in the weeding composition is one or more of polyvinyl alcohol, polyvinyl acetate, polyethylene glycol methacrylate, carboxymethyl cellulose, gum arabic, xanthan gum, starch and other high molecular polymers with adhesive property and film forming property.
Specifically, the wall material of the capsule forming agent in the weeding composition is polyurea resin which is prepared by the interfacial polymerization reaction of isocyanate monomer and polyol or polyamine, wherein the isocyanate comprises toluene diisocyanate, 4-diphenylmethane diisocyanate, polyphenyl polymethylene polyisocyanate and polyphenyl polymethylene polyisocyanate.
Specifically, the pH acid-base regulator of the weeding composition is selected from one or more of citric acid, glacial acetic acid, hydrochloric acid, ammonia water, biethanamine, biethanolamine and diethylenediamine; the amount required is that which is necessary to bring the pH of the final product into a stable range.
Specifically, the disintegrant in the herbicidal composition is selected from one or more of sodium chloride, ammonium sulfate, sodium sulfate, and soluble starch.
Specifically, the preservative in the weeding composition is selected from one or more of cason, formaldehyde, phenyl salicylate, sodium benzoate, butyl p-hydroxybenzoate and potassium sorbate.
Specifically, the stabilizing agent in the weeding composition is selected from one or more of epoxidized soybean oil, epichlorohydrin, diphenyl phosphite, glycidyl ether or pentaerythritol.
Specifically, the defoaming agent in the weeding composition is selected from one or more of silicone defoaming agent and polyether defoaming agent.
Specifically, the colorant in the herbicidal composition is selected from one or more of iron oxide, titanium oxide, and azo dyes.
Specifically, the filler in the weeding composition is selected from one or more of kaolin, diatomite, talcum powder, light calcium carbonate and white carbon black.
Specifically, the water in the herbicidal composition comprises tap water, deionized water or distilled water.
The weeding composition provided by the invention can be prepared into any agriculturally acceptable formulations according to actual needs, including wettable powder, dry suspending agent, powder, granules, water dispersible granules, suspending agent, suspoemulsion, microcapsule suspending agent, microemulsion, emulsion in water, oil suspension, missible oil, effervescent tablets and other formulations.
The processing technology of various formulations prepared from the weeding composition provided by the invention adopts a known method and equipment, and is a common means in the processing technology of pesticide preparations.
The composition of the invention can be provided in the form of a finished preparation, namely, all the substances in the composition are mixed and directly diluted to the required concentration when in use; the ingredients of the composition may also be provided in a single dose, directly mixed in a tub and tank in metered amounts before use, and then diluted to the desired concentration.
The invention also provides an application of the weeding composition containing oxaziclomefone and pinoxaden, and the weeding composition can be applied to weed control of vegetables, rice fields, orchards and the like, and is preferably applied to control of barnyard grass and moleplant seeds of the vegetables, the rice fields, the orchards and the like.
Preferably, in the application of the weeding composition, the weeds are grassy weeds; more preferably, the grassy weeds include barnyard grass, moleplant seed, large crabgrass, eleusine indica, setaria viridis, lance asiabell, paspalum distichum, teff, setaria viridis, agropyron cristatum, broomcorn millet and the like.
Compared with the prior art, the weeding composition provided by the invention has the following beneficial effects:
(1) compared with each single agent, the weeding composition provided by the invention has obvious synergy on the effect of preventing and removing weeds in vegetables, rice fields and orchards, can reduce the dosage of each single agent used independently, and reduce the dosage cost, and meanwhile, the effective components of the weeding composition provided by the invention are environment-friendly and high in safety, and can reduce the pressure on the environment;
(2) the weeding composition provided by the invention consists of two active ingredients with different action mechanisms, namely oxaziclomefone and pinoxaden, so that the generation of weed resistance can be effectively delayed, the application range and the service life of the product are expanded, and the generation of the weed resistance is delayed;
(3) compared with each single agent, the weeding composition provided by the invention not only improves the control effect, but also expands the control spectrum, and simultaneously can reduce the times of medication and reduce the environmental stress;
(4) the weeding composition provided by the invention can obviously improve the tolerance of crops, so that the safety of the herbicide to the crops is higher;
(5) the weeding composition provided by the invention is low in cost, convenient to use, time-saving and labor-saving, and has great economic and social benefits when popularized and applied;
(6) the weeding composition provided by the invention has excellent control effect on malignant weeds and resistant weeds, particularly resistant barnyard grass, which generate resistance in the long-term application process of the existing medicament.
Detailed Description
In order to make the objects and advantages of the invention more concise, the invention will be described in more detail with reference to the following examples, to which it is in no way limited. The following examples are merely preferred examples of the present invention and are intended to illustrate the present invention and should not be construed as limiting the scope of the present invention. It should be understood that any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Unless otherwise indicated, each component used herein is either commercially available or well known in the art or readily available to the skilled artisan from the disclosure of the prior art.
Formula I, formula II and preparation example
EXAMPLE A25% oxaziclomefone pinoxaden Suspension Concentrate (SC)
The composition is prepared into a suspending agent and comprises the following components in percentage by weight:
15% of oxaziclomefone, 10% of pinoxaden, 2% of polyoxyethylene sulfonyl castor oil nonionic, 1% of sulfonyl calcium succinate anion, 1% of polycarboxylate, 0.15% of xanthan gum, 2.5% of urea, 0.30% of sodium benzoate, 0.8% of monoethanolamine and water, wherein the balance is up to 100%.
The materials are sequentially put into a mixing reaction kettle and stirred uniformly, then are ground at high speed by a sand mill until the grain diameter D90 is 5 mu m, and are homogenized and prepared into uniform offwhite suspension.
Example two 30% Oxazifop-pinoxaden Water dispersible granules (WG)
When the composition is prepared into water dispersible granules, the composition comprises the following components in percentage by weight:
20% of oxaziclomefone, 10% of pinoxaden original drug, 8% of naphthalenesulfonic acid condensate sodium salt, 5% of sodium dodecyl sulfate, 15% of ammonium sulfate, 10% of glucose, 2% of white carbon black and the balance of washed kaolin to 100%.
The raw medicine and other auxiliary agents are mixed uniformly, air-powdered, kneaded by adding water, granulated and dried.
EXAMPLE three 50% wettable powder of pinoxaden-oxaziclomefone (WP)
The composition comprises the following components in percentage by weight when prepared into wettable powder:
25% of oxaziclomefone, 25% of pinoxaden raw drug, 5% of organic silicon, 4% of methylene dinaphthalene sulfonate, 1% of sodium dodecyl sulfate, 2% of white carbon black, 12% of light calcium carbonate and the balance of washed kaolin to 100%.
The raw medicine and other auxiliary agents are uniformly mixed and then are crushed into powder with the particle size D90 being 27 mu m by high-speed airflow, and the powder is gray white and powdery solid with good fluidity.
Example four 60% Oxazifop-pinoxaden Emulsifiable Concentrate (EC)
The composition is prepared into missible oil and comprises the following components in percentage by weight:
40% of oxaziclomefone, 20% of pinoxaden raw pesticide, 5% of calcium dodecyl propane sulfonate (emulsifier), 5% of phenethyl phenol polyoxyethylene ether (emulsifier) and the balance of xylene (solvent) to 100%.
Sequentially adding active ingredients, an emulsifier, a solvent and the like into a reaction kettle according to a formula proportion, and uniformly stirring to obtain 80% penoxsulam, pinoxaden and oxaziclomefone missible oil.
Second, bioassay example
Indoor toxicological determination test for oxaziclomefone, pinoxaden and compound barnyard grass thereof
In order to determine the synergistic effect of the oxaziclomefone and pinoxaden of the invention, the inventor firstly uses the active ingredients to carry out indoor bioassay tests, and the target of the bioassay tests is barnyard grass.
Test methods for the indoor biological activity assay: the inhibition effect of the medicament on barnyard grass is determined by adopting a greenhouse potting method according to the agricultural industry standard NY/T1155.4-2006 of the people's republic of China.
Placing air-dried, sieved and uniformly mixed sandy soil into a plastic pot with the diameter of 9cm, watering the bottom of the pot to wet the soil, sowing 30 barnyard grass seeds which are cultured to be white in each pot, culturing the seeds in a greenhouse under the natural illumination condition of natural humidity (50% -80%) and temperature of 15-25 ℃, after seedling emergence, fixing 20 seedlings in each pot, culturing the seedlings to a leaf stage of 5-6, and performing spray treatment by adopting a stem and leaf spray method according to the dosage of the following table 1, wherein the spray amount is 450L/hm
2The spraying pressure is 0.275MPa, and the test medicament is processed according to a method of preparing mother liquor, then sequentially diluting and preparing to the required dosage (effective components). Spraying clear water as blank control, and repeating for 4 times. After the application, the damage symptoms of the barnyard grass are recorded in detail, and the fresh weight parts of the barnyard grass treated on the ground are cut off 40 days after the treatment and weighed, and the fresh weight inhibition rate is calculated.
The formula for evaluating the herbicide combination according to the Colby method is as follows:
in the formula:
a is the percentage of the fresh weight inhibition rate of the oxaziclomefone to the target weeds when a certain dosage is used singly as a control;
b is the percentage of the fresh weight inhibition rate of pinoxaden to the target weeds when a certain dosage is used singly as a control;
n is the number of the mixed herbicide products, and n is 2 in the test;
E
0the fresh weight inhibition rate of the two agents, namely oxaziclomefone and pinoxaden, to the target weeds when the two agents are mixed is the theoretical value of the control percentage;
and E is an actual measurement value of the contrast of the fresh weight inhibition rate of the target weeds when two medicaments, namely oxaziclomefone and pinoxaden, are mixed.
Evaluation criteria: when E is
0-E > 10%, expressed as a synergistic effect; when the proportion is less than or equal to 10 percent of E
0When E is less than or equal to 10 percent, the composition is expressed as a synergistic phaseAdding; when E is
0When E is less than-10%, the synergistic antagonism is shown.
TABLE 1 indoor toxicological assay results for oxaziclomefone, pinoxaden and their complexed barnyard grass
The herbicide combination mode is evaluated according to the Colby method, and the data in Table 1 show that the two-element combination of oxaziclomefone and pinoxaden has obvious synergistic effect on barnyard grass, and E
0E values are almost all larger than 20%, and the compounding of the oxaziclomefone and the pinoxaden shows obvious synergistic effect on the barnyard grass.
Third, example of field experiment
The purpose of the test is as follows: the experiment is carried out in order to verify the control effect of the composition on the weeds in the paddy field, provide the optimal field dosage and the pesticide effect data of the using technology for the reagent to be tested and further provide scientific basis for future production and application.
The test method comprises the following steps: 4 formulas and 2 single agents are selected for field tests, the test field is arranged at the research institute of pesticide and environmental toxicology of Zhejiang university, the test field is carried out in a direct seeding paddy field, the test field is soil, the fertility is medium, the pH value is neutral, and field weeds in the test field mainly comprise barnyard grass and moleplant seed. The experiment adopts a plot contrast experiment, the rice is treated by a stem leaf spraying method 10 days after direct seeding, water is firstly added before pesticide application, soil is kept moist, the water is rehydrated within 2 days after pesticide application, normal management is kept, the treatment is repeated for 3 times, the water is randomly arranged in blocks, the area of an experimental plot is 100m2, ridges are arranged between each experimental zone and between each block to prevent mutual influence, and a 2m protective row is arranged in the experimental ground.
Each processing setting
Single dose 1: 5% pinoxaden emulsifiable concentrate (100 g/mu);
single agent 2: 1% oxaziclomefone dispersible oil suspension concentrate (500 g/mu);
compounding 1: 25% oxaziclomefone-pinoxaden suspending agent, oxaziclomefone: pinoxaden is 3: 2(80 g/mu)
Compounding 2: 30% oxaziclomefone pinoxaden (WG), oxaziclomefone: pinoxaden is 2: 1(75 g/mu)
Compounding 3: 50% pinoxaden-oxaziclomefone Wettable Powder (WP), oxaziclomefone: pinoxaden is 1: 1(40 g/mu)
Compounding 4: 60% oxaziclomefone pinoxaden Emulsifiable Concentrate (EC), oxaziclomefone: pinoxaden is 2: 1(37.5 g/mu)
CK: and (5) clear water control.
Investigation time and number of times: respectively observing the leaf color and the growth vigor of the rice in each cell 3d, 7d, 15d and 30d after the application of the pesticide, and estimating the damage level of the rice and the safety of the pesticide to the rice; the prevention effect adopts a chessboard method, 5 points are taken in each cell, and the area is 0.25m
2The control effect of the plants was investigated 30 days after the administration. Test results are shown in Table 2.
TABLE 2 field efficacy test weeding results (30 days after application)
As can be seen from Table 2, the control effect of the oxaziclomefone and pinoxaden after being compounded on barnyard grass and moleplant seed after being used for 30 days is more than 90 percent, the composition has excellent control effect on weeds in paddy fields, and simultaneously, the dosage of the pesticide is reduced. In addition, no adverse factor is generated on the growth of rice during the application observation period of the composition, and no phytotoxicity phenomenon occurs, so that the composition disclosed by the invention is high in safety on rice.
In conclusion, the binary weeding composition of oxaziclomefone and pinoxaden is recommended to be used, the two-element weeding composition is beneficial to mutual drug effect increase, has no antagonism, expands the weeding spectrum, solves the problem of preventing and removing resistant barnyard grass, reduces the dosage of a single agent, delays the generation of resistance, can greatly reduce the use cost of farmers, and has the effect of solving various weeds in a rice field by using the composition once.
Variations and modifications to the above-described embodiments may occur to those skilled in the art, which fall within the scope and spirit of the above description. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and modifications and variations of the present invention are also intended to fall within the scope of the appended claims. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims (10)
1. A weeding composition containing oxaziclomefone and pinoxaden is characterized by comprising effective amounts of two active ingredients, namely oxaziclomefone and pinoxaden.
2. A herbicidal composition according to claim 1, wherein the weight ratio of the two active ingredients, oxaziclomefone and pinoxaden, is 1-20: 20-1.
3. A herbicidal composition according to claim 1, wherein the weight ratio of oxaziclomefone to pinoxaden in the herbicidal composition is from 1 to 10: 10 to 1.
4. A herbicidal composition according to claim 1, wherein the weight ratio of oxaziclomefone to pinoxaden in the herbicidal composition is from 1 to 2: 2 to 1.
5. The weeding composition according to claim 1, wherein the total weight of oxaziclomefone and pinoxaden in the weeding composition accounts for 1% -90% of the total weight of the composition, and the balance is auxiliary ingredients allowed to be added in the pesticide preparation.
6. The weeding composition according to claim 1, wherein the sum of the weights of oxaziclomefone and pinoxaden in the weeding composition accounts for 5-80% of the total weight of the composition, and the balance is auxiliary ingredients allowed to be added in the pesticide preparation.
7. The herbicidal composition as claimed in claim 1, wherein the herbicidal composition is formulated as wettable powder, dry suspension, powder, granule, water dispersible granule, suspension, suspoemulsion, microcapsule suspension, microemulsion, emulsion in water, oil suspension, emulsifiable concentrate or effervescent tablet, as required.
8. A herbicidal composition according to claim 5 or 6, characterized in that the auxiliary ingredients in the herbicidal composition are one or more of wetting agents, dispersants, emulsifiers, co-surfactants, thickeners, solvents, co-solvents, anti-freezing agents, disintegrants, preservatives, stabilizers, film formers, encapsulating agents, pH-adjusting agents, antifoaming agents, colorants, fillers, water.
9. The application of the weeding composition containing oxaziclomefone and pinoxaden is characterized in that the weeding composition is applied to weed control of vegetables, rice fields and orchards.
10. The application of the herbicidal composition containing oxaziclomefone and pinoxaden according to claim 9, wherein the herbicidal composition is applied to control barnyard grass and moleplant seed.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1376032A (en) * | 1999-09-07 | 2002-10-23 | 辛根塔参与股份公司 | Herbicidal composition |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1376032A (en) * | 1999-09-07 | 2002-10-23 | 辛根塔参与股份公司 | Herbicidal composition |
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| Title |
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| 高颜: "影响双穗雀稗生长发育的因素与化除药剂筛选研究", 《中国优秀硕士学位论文全文数据库 农业科技辑》 * |
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Application publication date: 20200211 |