CN111903690B - Herbicidal composition containing dithiopyr and application thereof - Google Patents
Herbicidal composition containing dithiopyr and application thereof Download PDFInfo
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- CN111903690B CN111903690B CN202010910604.5A CN202010910604A CN111903690B CN 111903690 B CN111903690 B CN 111903690B CN 202010910604 A CN202010910604 A CN 202010910604A CN 111903690 B CN111903690 B CN 111903690B
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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
- A01N43/34—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom
- A01N43/40—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom six-membered rings
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G13/00—Protecting plants
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G22/00—Cultivation of specific crops or plants not otherwise provided for
- A01G22/20—Cereals
- A01G22/22—Rice
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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
- A01N39/00—Biocides, pest repellants or attractants, or plant growth regulators containing aryloxy- or arylthio-aliphatic or cycloaliphatic compounds, containing the group or, e.g. phenoxyethylamine, phenylthio-acetonitrile, phenoxyacetone
- A01N39/02—Aryloxy-carboxylic acids; Derivatives thereof
- A01N39/04—Aryloxy-acetic acids; Derivatives thereof
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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
- A01N43/48—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with two nitrogen atoms as the only ring hetero atoms
- A01N43/54—1,3-Diazines; Hydrogenated 1,3-diazines
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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
- A01N43/88—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 three ring hetero atoms
Abstract
The invention belongs to the technical field of pesticide herbicides, and discloses a herbicide composition containing dithiopyr and application thereof. The mass ratio of the active ingredient A to the active ingredient B is 50: 1-1: 50. The weeding composition provided by the invention is reasonable in components, good in quick-acting property and long in lasting period, not only greatly improves the control effect of weeds in a paddy field and enlarges the weed control spectrum, but also effectively reduces the generation of drug resistance of the weeds and reduces the drug cost and the drug frequency.
Description
Technical Field
The invention belongs to the field of pesticides, and particularly relates to a dithiopyr-containing weeding composition and application thereof.
Background
Dithiopyr (Dithiopyr) is a pyridine carboxylic acid herbicide. The herbicide is mainly absorbed by stems, leaves and roots, prevents the formation of spindle microtubules, causes microtubules to be short, cannot form normal spindle threads, prevents cells from mitosis, stops the growth of weeds and dies, and is a mitosis inhibitor. The dithiopyr has low use dose, high efficiency and long lasting period, is widely used for weeding paddy rice and can prevent and kill barnyard grass, monochoria vaginalis, cyperus rotundus, Equisetum arvense and other annual weeds. Dithiopyr chemical name: s, S' -dimethyl-2 difluoromethyl-4 isobutyl-6 trifluoromethylpyridine-3, 5-dithioformate, CAS accession No.: 997886-45-8, chemical structural formula:
cyhalofop-butyl is an acetyl coenzyme A carboxylase (ACCase) inhibitor herbicide and is widely used for preventing and killing various weeds such as moleplant seed, digitaria sanguinalis, green bristlegrass, goosegrass herb and the like in paddy fields. Cyhalofop-butyl is registered in China in 2006, and is safe to rice and has a special effect on moleplant seed, so that cyhalofop-butyl becomes one of important herbicide varieties for preventing and controlling annual gramineous weeds such as moleplant seed, barnyard grass and the like in China. CAS accession number: 122008-85-9, chemical structural formula:
bentazone belongs to a contact type selective herbicide, is mainly absorbed by leaf surfaces, conducts a small amount of bentazone, is also absorbed by roots, conducts the bentazone through the top of xylem, influences the water metabolism and photosynthesis of weeds, and finally causes the physiological functions of the weeds to be disordered. The herbicide is mainly used for crops such as rice, soybean, peanut, wheat and the like, can prevent and kill broadleaf weeds and cyperaceae weeds, and is ineffective for gramineous weeds. CAS accession number: 25057-89-0, chemical structural formula:
bispyribac-sodium is an inhibitor of branched chain amino acid synthesis (ALS or AHAS). The selective and systemic post-emergence herbicide is absorbed by leaf surface or root to prevent and kill monocotyledonous weeds, nutgrass flatsedge and broad-leaved weeds, especially barnyard grass in direct seeding field. CAS accession number: 125401-92-5, chemical structural formula:
the paddy field is one of important grain crops in the world and meets the grain demand of nearly 50% of the population in the world. With the increase of the rice planting area, the harm of weeds to the rice yield is more and more serious. In the agricultural production process, the rice loss caused by weeds is about 15% every year, and improper control of fields can even be absolutely harvested. Weeds not only cause the reduction of the yield of rice, but also affect the quality of rice. The weeds in paddy fields are mainly gramineae, monochoriaceae, alismatis, cyperaceae, compositae and the like. At present, chemical weeding is mainly adopted for preventing and controlling weeds in paddy fields, but due to single and excessive use and unreasonable abuse of chemical herbicides, serious environmental and health problems are caused, and serious drug resistance of the weeds is caused. Therefore, how to reasonably screen and compound different pesticide varieties, improve the control effect of weeds in the paddy field, reduce the dosage, reduce the cost and delay the generation of drug resistance of the weeds is the key point of the research in the production field of the paddy field. The applicant mixes the dithiopyr with any one of cyhalofop-butyl, bentazone or bispyribac-sodium, finds that the compound has a synergistic effect on preventing and removing weeds in the paddy field in a certain mixing proportion range, has good quick action and long duration, effectively reduces the generation of drug resistance of the weeds, reduces the drug cost and the drug frequency, and is safer and more efficient.
Disclosure of Invention
The invention aims to solve the problems of drug resistance of herbicides to paddy field weeds and poor actual control effect in the prior art, and provides a weeding composition which has high efficiency, low toxicity, good quick action and long duration and is beneficial to comprehensive control of the paddy field weeds.
The invention also aims to use the weeding composition for preventing and killing farmland weeds, and is particularly suitable for preventing and killing paddy field weeds.
The technical scheme of the invention is as follows:
the weeding composition containing dithiopyr comprises an active ingredient A and an active ingredient B, wherein the active ingredient A is dithiopyr, the active ingredient B is selected from one of cyhalofop-butyl, bentazone and bispyribac-sodium, and the mass ratio of the active ingredient A to the active ingredient B is 50: 1-1: 50.
Further, the mass ratio of the dithiopyr to the cyhalofop-butyl is 15: 1-1: 20;
further, the mass ratio of the dithiopyr to the cyhalofop-butyl is 10: 1-1: 5;
further, the mass ratio of the dithiopyr to the bentazone is 5: 1-1: 30;
further, the mass ratio of the dithiopyr to the bentazone is 3: 1-1: 20;
further, the mass ratio of the dithiopyr to the bispyribac-sodium is 20: 1-1: 10;
further, the mass ratio of the dithiopyr to the bispyribac-sodium is 10: 1-1: 5;
further, the active ingredient A and the active ingredient B account for 1-90% of the weeding composition by mass;
further, the active ingredient A and the active ingredient B account for 10-80% of the weeding composition by mass;
further, the herbicide composition also contains an auxiliary agent commonly used in pesticide preparations to prepare various dosage forms suitable for agricultural use;
further, the auxiliary agent comprises one or more of a solvent, a dispersing agent, an emulsifying agent, a wetting agent, a disintegrating agent, a thickening agent, a stabilizing agent, a carrier, an antifreezing agent, a dispersion medium, a carrier or a filler and the like.
The invention provides a dithiopyr-containing weeding composition, which can be prepared into a preparation formulation acceptable for pesticides according to a method known by technical personnel in the technical field, wherein the preparation formulation of the weeding composition is any one of powder, dispersible tablets, granules, soluble powder, soluble granules, soluble tablets, emulsion powder, emulsion granules, water dispersible granules, wettable powder, microcapsule granules, powder, large granules, water dispersible tablets, microcapsule suspending agents, dispersible agents, missible oil, emulsion granules, emulsion powder, emulsion in water, microemulsion, dispersible oil suspending agents, oil dispersible powder, suspending agents, soluble agents and ultra-low volume liquid agents;
furthermore, the preparation formulation is any one of missible oil, water dispersible granules, wettable powder and dispersible oil suspending agent;
further, the emulsifiable concentrates may use as auxiliaries: emulsifiers such as fatty alcohol polyoxyethylene ether, alkylphenol polyoxyethylene polyoxypropylene ether, castor oil ethylene oxide adduct and its derivatives, polyoxyethylene polyoxypropylene block copolymer, calcium dodecylbenzenesulfonate; a solvent such as one or more of trimethylbenzene, methyl oleate, N-dimethyldecanamide, dimethyl sulfoxide (DMSO), propylene carbonate, and fatty acid esters;
further, the water dispersible granule may use the following additives: dispersants such as one or more of polycarboxylates (TERSPERSE 2700, T36, GY-D06, etc.), lignosulfonates, alkylnaphthalene sulfonates, and the like; wetting agents such as one or more of alkyl sulfates, alkyl sulfonates, naphthalene sulfonates, and the like; disintegrating agent such as one or more of ammonium sulfate, sodium sulfate, polyvinylpyrrolidone, starch or its derivatives, bentonite, etc.; binder such as one or more of starch, glucose, polyvinyl alcohol, polyethylene glycol, sodium carboxymethylcellulose, sucrose, etc.; fillers such as one or more of diatomaceous earth, kaolin, white carbon black, calcium phosphate, talc, attapulgite, china clay, and the like;
further, as the wettable powder, there can be used: dispersing agents such as one or more of polycarboxylate, lignosulfonate, polyoxyethylene polyoxypropylene ether block copolymer, alkyl naphthalene formaldehyde condensate sulfonate, alkylphenol polyoxyethylene ether phosphate, fatty alcohol polyoxyethylene ether phosphate, alkylphenol polyoxyethylene ether sulfonate and the like; wetting agents such as one or more of alkyl sulfates, alkyl sulfonates, alkyl naphthalene sulfonates, and the like; fillers such as one or more of ammonium sulfate, urea, sucrose, glucose, diatomaceous earth, kaolin, white carbon black, calcium phosphate, talc, attapulgite, kaolin, etc.;
further, the dispersible oil suspension can use the following auxiliaries: dispersants such as one or more of polycarboxylate, lignosulfonate, alkylnaphthalene sulfonate (diffuser NNO), etc.; the emulsifier is one or more of BY (castor oil polyoxyethylene ether) series emulsifiers (BY-110, BY-125 and BY-140), Nongru 700# (alkylphenol formaldehyde resin polyoxyethylene ether), Nongru 2201, span-60 # (sorbitan monostearate), Tween-60 # (sorbitan monostearate polyoxyethylene ether), Nongru 1601# (phenethylphenol polyoxyethylene polyoxypropylene ether) and the like; 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, 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.; dispersing medium such as one or more of soybean oil, rapeseed oil, wheat oil, methyl oleate, diesel oil, engine oil, mineral oil, etc.;
further, the composition is missible oil, and the missible oil preferably comprises the following components in percentage by weight: 0.1-80% of active ingredient A, 0.1-80% of active ingredient B, 0.1-20% of emulsifier and 1-90% of solvent;
further, the composition is a water dispersible granule, and the water dispersible granule preferably comprises the following components in percentage by weight: 0.1-60% of active ingredient A, 0.1-60% of active ingredient B, 1-15% of dispersing agent, 1-10% of wetting agent, 1-15% of disintegrating agent, 1-10% of binder and 1-80% of filler;
further, the composition is a wettable powder, and the wettable powder preferably comprises the following components in percentage by weight: 0.1-60% of active ingredient A, 0.1-60% of active ingredient B, 1-20% of dispersing agent, 1-15% of wetting agent and 1-80% of filler;
further, the composition is a dispersible oil suspending agent, and the dispersible oil suspending agent preferably comprises the following components in percentage by weight: 0.1-60% of active ingredient A, 0.1-60% of active ingredient B, 1-15% of dispersing agent, 0.5-20% of emulsifying agent, 1-10% of wetting agent, 1-10% of thickening agent, 0.1-10% of antifreezing agent and 1-80% of dispersion medium.
The weed emergence peak period of the rice transplanting field is mainly 1-2 weeks after the transplanting, and barnyard grass, moleplant seed, special-shaped sedge and monochoria vaginalis are mainly used; weeds in the direct seeding field germinate at the same time with rice basically, so that the weeds in the direct seeding field are more difficult to control than those in a transplanting field, and are mainly serious in barnyard grass, alopecurus as a raw material, moleplant seed, alligator alternanthera, monochamus linnaeus, digitaria sanguinalis, eleusine indica and the like. Wherein the barnyard grass and the moleplant seed are the dominant weeds in transplanting fields and direct seeding fields.
The invention relates to a dithiopyr-containing weeding composition and application of a preparation thereof in preventing and removing unwanted plants;
further, the growing place of the unwanted plants is a paddy field;
further, the unwanted plants are gramineous weeds, sedge weeds and sedge weeds in paddy fields;
furthermore, the grassy weeds are large crabgrass, barnyard grass, blue grass, alopecurus, and moleplant seeds; the Potentilla discolor of Potentilla discolor is Monochoria scholaris; the Cyperaceae weed is abnormal Cyperus rotundus L.
The invention has reasonable components, good weeding effect and low drug cost, and the activity and the weeding effect of the invention are not simple superposition of the activities of the components, but have obvious synergistic action, can expand the weed control spectrum, delay resistance, have good safety to crops and meet the safety requirement of pesticide preparations.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more concise and clear, the present invention is described with the following specific embodiments, but the present invention is by no means limited to these embodiments. The following described examples are only preferred embodiments of the present invention, which can be used to describe the present invention and should not be construed as limiting the scope of the present invention. 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 scope of the present invention.
Preparation examples of formulations
Example 1: 25% dithiopyr cyhalofop-butyl dispersible oil suspending agent (1.5:1)
The formula is as follows: 15% dithiopyr, 10% cyhalofop-butyl, 2% sodium polycarboxylate, 4% Nongru 1601#, 3% Tween-60 #, 4% Nongru 2201, 1% sodium alkyl sulfate, 0.5% bentonite, 5% propylene glycol and 55% soybean oil;
the preparation method comprises the following steps: according to the formula proportion, the effective components of dithiopyr, cyhalofop-butyl, surfactant and other functional additives are sequentially placed in a reaction kettle, oil is added and mixed uniformly, and the suspending agent product is obtained through high-speed shearing, wet sanding and finally homogeneous filtration.
Example 2: 42% dithiopyr-bentazone dispersible oil suspending agent (1:6)
The formula is as follows: 6% dithiopyr, 36% bentazone, 2% sodium lignosulfonate, 5% span-60 #, 5% agricultural milk 700#, 4% sodium naphthalene sulfonate, 1% magnesium aluminum silicate, 4% glycerol and 37% rapeseed oil;
the preparation method comprises the following steps: the same as in example 1.
Example 3: 40% dithiopyr-bispyribac-sodium dispersible oil suspending agent (4:1)
The formula is as follows: 32% dithiopyr, 8% bispyribac-sodium, 2% sodium lignosulfonate, 4% Nongru 1601#, 3% Tween-60 #, 4% Nongru 2201, 4% sodium naphthalenesulfonate, 1% magnesium aluminum silicate, 4% glycerol and 38% soybean oil;
the preparation method comprises the following steps: the same as in example 1.
Example 4: 39% dithiopyr cyhalofop-butyl emulsifiable concentrate (8:5)
The formula comprises 24% of dithiopyr, 15% of cyhalofop-butyl, 10% of dimethyl sulfoxide (DMSO), 5% of fatty alcohol-polyoxyethylene ether, 9% of alkylphenol polyoxyethylene polyoxypropylene ether, 1% of calcium dodecyl benzene sulfonate and 36% of methyl oleate;
the preparation method comprises the following steps: adding the effective components of dithiopyr and cyhalofop-butyl into a carrier according to the formula proportion of the embodiment, adding a surfactant and other functional auxiliaries, and uniformly stirring and mixing in a stirring and mixing kettle to obtain the missible oil product.
Example 5: 44% dithiopyr-bentazone missible oil (2:9)
The formula is as follows: 8% dithiopyr, 36% bentazone, 10% N, N-dimethyl capramide, 2% castor oil, 3% calcium dodecyl benzene sulfonate and 41% trimethylbenzene;
the preparation method comprises the following steps: the same as in example 4.
Example 6: 50% dithiopyr-bispyribac-sodium emulsifiable concentrate (4:1)
The formula is as follows: 40% dithiopyr, 10% bispyribac-sodium, 6% N, N-dimethyl capramide, 8% dimethyl sulfoxide (DMSO), 10% propylene carbonate, 5% fatty alcohol-polyoxyethylene ether, 7% castor oil, 3% calcium dodecyl benzene sulfonate and 11% trimethylbenzene;
the preparation method comprises the following steps: the same as in example 4.
Example 7: 31% dithiopyr cyhalofop-butyl wettable powder (16:15)
The formula is as follows: 16% of dithiopyr, 15% of cyhalofop-butyl, 5% of calcium alkyl naphthalene formaldehyde condensate sulfonate, 6% of sodium alkylphenol polyoxyethylene ether sulfonate, 3% of sodium alkyl naphthalene sulfonate, 5% of talcum powder, 2% of urea and 48% of diatomite;
the preparation method comprises the following steps: according to the formula proportion of the embodiment, the effective components of the dithiopyr and the cyhalofop-butyl are added into the carrier, the surfactant and other functional additives are added into the carrier, the mixture is mixed, and the wettable powder product can be prepared by mixing the mixture after airflow crushing.
Example 8: 30% dithiopyr-bentazone wettable powder (1:9)
The formula is as follows: 3% dithiopyr, 27% bentazone, 4% sodium lignosulfonate, 5% fatty alcohol-polyoxyethylene ether phosphate, 4% sodium polycarboxylate, 3% sodium alkyl sulfate, 3% calcium phosphate and 51% talcum powder;
the preparation method comprises the following steps: the same as in example 7.
Example 9: 18% dithiopyr-bispyribac-sodium wettable powder (7:2)
The formula is as follows: 14% of dithiopyr, 4% of bispyribac-sodium, 4% of calcium alkyl naphthalene formaldehyde condensate sulfonate, 5% of sodium alkylphenol polyoxyethylene ether sulfonate, 2% of sodium alkyl naphthalene sulfonate, 5% of talcum powder and 66% of kaolin;
the preparation method comprises the following steps: the same as in example 7.
Example 10: 30% dithiopyr cyhalofop-butyl water dispersible granule (5:1)
The formula is as follows: 25% of dithiopyr, 5% of cyhalofop-butyl, 3% of polycarboxylate GY-D06, 4% of sodium dodecyl sulfate, 1% of sodium alkyl sulfonate, 2% of cane sugar and 60% of pottery clay;
the preparation method comprises the following steps: according to the formula proportion of the embodiment, the effective components of dithiopyr and cyhalofop-butyl are added into a carrier, a surfactant and other functional auxiliaries are added into the carrier, the mixture is mixed, after air flow crushing, a proper amount of water is added, and then the water dispersible granule product is prepared through kneading, granulating, drying and screening.
Example 11: 15% dithiopyr-bentazone water dispersible granule (2:1)
The formula is as follows: 10% dithiopyr, 5% bentazone, 3% polycarboxylate T36, 4% sodium dodecyl sulfate, 1% sodium alkyl sulfonate, 2% glucose, 75% talcum powder;
the preparation method comprises the following steps: the same as in example 10.
Example 12: 40% dithiopyr-bispyribac-sodium water dispersible granule (3:1)
The formula is as follows: 30% dithiopyr, 10% bispyribac-sodium, 4% sodium alkyl naphthalene sulfonate, 3% sodium lignin sulfonate, 2% sodium dibutyl naphthalene sulfonate, 2% sodium naphthalene sulfonate, 4% sodium carboxymethylcellulose, 5% sodium sulfate and 40% white carbon black;
the preparation method comprises the following steps: the same as in example 10.
Examples of indoor Activity
Example 13: the combined effect of the dithiopyr-containing compositions on common weeds was determined.
The test basis is as follows: NY/T1155.4-2006 activity determination test stem leaf spray method for indoor bioassay test criteria of pesticides, NY/T1155.7-2006 combined action determination of mixing of indoor bioassay test criteria of pesticides.
Test targets: barnyard grass, moleplant seed, crab grass, alopecurus, bluegrass, monochoria vaginalis and cyperus heterophyllus.
Reagent to be tested: 91.5 percent of dithiopyr technical, 98 percent of cyhalofop-butyl technical, 97 percent of bentazone technical and 95 percent of bispyribac-sodium technical, wherein the technical is provided by research and development centers of Heliel pharmaceutical industry group Limited.
Preparing a medicament: dissolving the raw medicines with a proper solvent, diluting with 0.1% Tween 80 aqueous solution, and preparing into 5 series of mass concentrations according to an equal ratio method for later use.
The test method comprises the following steps: respectively sowing the quantified grass seeds in pots with the diameter of 9cm, culturing in a light incubator, and performing spray treatment on 20 plants per pot when weeds grow to the 1-3 leaf stage. The cultivation is continued in the greenhouse after the treatment, the weed control effect of each treatment is regularly observed, and the fresh weight of each treated weed is recorded after 14 days.
And (3) test treatment: repeat for 4 times in each treatment setting, and set clear water as a control.
Data investigation and statistical analysis: observing and recording the growth state of the weeds after the treatment of the agent, investigating weed control effect 14 days after the treatment, respectively recording the fresh weight of the weeds, calculating the fresh weight control effect of the weeds, and calculating the fresh weight inhibition rate of the targets according to different agent ratios by a Gowing method.
The weed fresh weight inhibition ratio (E)% (fresh weight of weeds in blank area-fresh weight of weeds in control area)/fresh weight of weeds in blank area) x 100
Theoretical fresh weight inhibition ratio (E) of mixed herbicide0) Percent is the fresh weight inhibition of the weeds when the compound A is used as the dosage P plus the fresh weight inhibition of the weeds when the compound B is used as the dosage Q- (the fresh weight inhibition of the weeds when the compound A is used as the dosage P x the fresh weight inhibition of the weeds when the compound B is used as the dosage Q)/100;
evaluation criteria: if E-E0-10% is expressed as antagonism; E-E0An addition between ± 10%; if E-E0A > 10% is indicated as synergistic effect.
The test results are as follows:
TABLE 1 Combined action of dithiopyr and cyhalofop-butyl on barnyard grass and moleplant seed
TABLE 2 Combined action of dithiopyr and cyhalofop-butyl on crab grass and alopecurus
The test result shows that (see table 1 and table 2) the mixture of the dithiopyr and the cyhalofop-butyl has good indoor activity for common weeds such as barnyard grass, moleplant seed, crab grass and alopecurus. Dithiopyr: cyhalofop-butyl 100:100, 100:125 and 100:150 shows synergistic effect in preventing barnyard grass, moleplant seed, crab grass and alopecurus as well as dithiopyr: the content of cyhalofop-butyl 120:150 in the control of the moleplant seed and the crab grass E is 93.7 percent and 88.9 percent respectively, the high control effect is shown, and the action effect is a synergistic action.
TABLE 3 Combined action of dithiopyr and bentazon in combination on large crabgrass and barnyard grass
TABLE 4 Combined action of Flufoenidine and bentazon on heterotypic Cyperus and monochoria vaginalis
The test results show (see tables 3 and 4) that the mixture of the dithiopyr and the bentazone has good indoor activity for common weeds of large crabgrass, barnyard grass, sedge with abnormal shape and monochoria vaginalis, and the types of the combined action are additive action or synergistic action.
TABLE 5 Combined action of dithiopyr and Bispyribac-sodium on crab grass and bluegrass
TABLE 6 Combined action of dithiopyr and bispyribac-sodium on heterotypic Cyperus and Echinochloa crusgalli
The test results show (see tables 5 and 6) that the mixture of dithiopyr and bispyribac-sodium has good indoor activity for common weeds of large crabgrass, bluegrass, sedge heterotropoides and barnyard grass, and the types of the combined action are additive or synergistic action. Wherein dithiopyr: bispyribac-sodium 100:30, 100:35, 120:25, 120:30 and 120:35 for preventing and treating E-E of large crabgrass010.6, 13.1, 11.7, 13.3 and 13.3 respectively show synergistic effect.
As can be seen from comprehensive indoor activity tests (tables 1 to 6), the mixture of the dithiopyr, the cyhalofop-butyl, the bentazone and the bispyribac can be used for testing common weeds such as crabgrass, cyperus heterophylla, barnyard grass, bluegrass, alopecurus alopecuroides, moleplant seeds and the like in farmlands, and due to the technical level, the test period, the age of the weeds and the resistance of the collected weed seeds and the like of testers, different fresh weight control effects (E) on the same weeds can be achieved by using the single components under the condition of the same dosage, and the numerical value ranges are acceptable ranges of test numerical values, so the indoor activity test numerical values have high reference values for the field pesticide effect.
Test of field drug effect
Example 14: and (3) field efficacy test of the herbicide composition containing the dithiopyr.
In 2019, field pharmacodynamic tests of 25% dithiopyr-cyhalofop-butyl dispersible oil suspending agent (1.5:1), 42% dithiopyr-bentazone dispersible oil suspending agent (1:6), 40% dithiopyr-bispyribac-sodium dispersible oil suspending agent (4:1), 10% dithiopyr suspending agent, 10% cyhalofop-butyl suspending agent and 10% bispyribac-sodium wettable powder for preventing and controlling weeds in paddy fields are carried out in Changde city \28583inHunan province, county and great village, and the safety of the pesticide to paddy rice is verified.
Target weeds: crab grass, barnyard grass, bluegrass, moleplant seed, cyperus rotundus, monochoria vaginalis and amur foxtail;
rice variety: xiangzao 143;
the test design of the test agents is shown in table 7 below:
TABLE 7 test design of test agents
| Processing number | Medicament | Amount of effective component (g/hm)2) |
| A | 25% dithiopyr cyhalofop-butyl dispersible oil suspending agent | 100 |
| B | 42% dithiopyr-bentazone dispersible oil suspending agent | 600 |
| C | 40% dithiopyr-bispyribac-sodium dispersible oil suspending agent | 100 |
| D | 10% dithiopyr suspension | 120 |
| E | 10% cyhalofop-butyl emulsifiable concentrate | 105 |
| F | 10% bispyribac-sodium suspension | 60 |
| G | Blank control | --- |
The cell arrangement adopts random block arrangement, and the test area of each treatment zone is 20m2Buffer is set between each cell, A, B, C, D, E, F, G is 7 treatments in table 1, and I, II, III, IV are quadruplicate
The application method and times are as follows: spraying stems and leaves according to the dilution times required by the test; the application is started at the 2-3 leaf stage of the weeds, and the application is carried out once in total.
The weed control effect investigation method comprises the following steps: pharmacodynamic investigations were performed 15d and 30d after the administration, respectively. Randomly selecting 4 points per cell, wherein the area of each point is 0.25m2. Investigating the plant number, the species and the fresh weight of the weeds, recording according to the actual investigation condition, and calculating the plant number control effect and the fresh weight control effect. And (3) applying DPS software to perform difference analysis on the data by adopting a Duncan new repolarization method.
Calculating and displaying the plant control effect and fresh weight control effect:
plant release rate (%) (number of weed plants in blank control area-number of weed plants in treated area)/number of weed plants in blank control area x 100
Fresh weight control effect (%) - (fresh weight of weeds in blank control area-fresh weight of weeds in treated area)/fresh weight of weeds in blank control area x 100
The safety of rice is investigated: visual inspection, while investigating the pesticide effect, selecting 1 point per cell, continuously investigating 10 plants, recording the plant height, leaf color, growth condition and existence of pesticide damage of the rice, if the rice is damaged, recording the damaged symptoms in detail, and finally observing whether the rice is normal or not in the mature period.
Results and analysis:
TABLE 8 herbicidal Agents for controlling weeds in Rice field
Note: the different letters represent significant differences after the data (P < 0.05)
As can be seen from Table 8, the control effect of each compound test agent on the conventional weeds in the paddy field is more than 85%, wherein the control effect of 25% dithiopyr-cyhalofop-butyl dispersible oil suspending agent (3:2) is the best, and the control effect of 15d, 30d and 30d fresh weight of the dithiopyr-cyhalofop-butyl dispersible oil suspending agent (3:2) on the weeds in the paddy field is 88.7%, 87.1 and 88.5 respectively. The fresh weight control effect and the plant control effect jointly prove that the compound pesticide has good control effect on weeds in paddy fields.
TABLE 9 herbicidal Agents for controlling weeds in Rice field
Safety investigation: during the test period, all the mixed chemicals are safe to the growth of rice and have no phytotoxicity.
In conclusion, the composition adopts a compound scheme of the dithiopyr and any one of cyhalofop-butyl, bentazone and bispyribac-sodium, the activity and the weeding effect are not simple superposition of the activities of all the components, and compared with the existing single preparation, the composition has the advantages of obvious control effect on various weeds, obvious synergistic effect, capability of delaying resistance, less pesticide residue and good safety, and meets the safety requirement of pesticide preparations.
Claims (9)
1. The weeding composition containing dithiopyr is characterized by comprising an active ingredient A and an active ingredient B, wherein the active ingredient A is dithiopyr, and the active ingredient B is selected from one of cyhalofop-butyl, bentazone and bispyribac-sodium;
when the active ingredient B is cyhalofop-butyl, the dosage of the active ingredient of the dithiopyr per hectare is 100g, and the mass ratio of the dithiopyr to the cyhalofop-butyl is 100: 100-100: 150, or the dosage of the active ingredient of the dithiopyr per hectare is 120g, and the mass ratio of the dithiopyr to the cyhalofop-butyl is 120: 150;
when the active ingredient B is the bentazone, the dosage of the active ingredient of the dithiopyr per hectare is 80g, and the mass ratio of the dithiopyr to the bentazone is 80: 900-80: 1080, or the dosage of the active ingredient of the dithiopyr per hectare is 100g, and the mass ratio of the dithiopyr to the bentazone is 100: 720-100: 1080, or the dosage of the active ingredient of the dithiopyr per hectare is 120g, and the mass ratio of the dithiopyr to the bentazone is 120: 1080;
when the active ingredient B is bispyribac-sodium, the dosage of the active ingredient of the dithiopyr per hectare is 80g and the mass ratio of the dithiopyr to the bispyribac-sodium is 80:35, or the dosage of the active ingredient of the dithiopyr per hectare is 100g and the mass ratio of the dithiopyr to the bispyribac-sodium is 100: 30-100: 35, or the dosage of the active ingredient of the dithiopyr per hectare is 120g and the mass ratio of the dithiopyr to the bispyribac-sodium is 120: 25-120: 35.
2. The weeding composition according to claim 1, wherein the active ingredient A and the active ingredient B account for 10-80% of the weeding composition by mass.
3. The herbicidal composition according to claim 1, wherein the herbicidal composition further comprises an adjuvant commonly used in the formulation of agricultural chemicals for the preparation of various formulations suitable for agricultural use.
4. A herbicidal composition according to claim 3, wherein the adjuvant comprises one or more of a solvent, a dispersant, an emulsifier, a wetting agent, a disintegrant, a thickener, a stabiliser, a carrier, and an anti-freeze agent.
5. The weeding composition according to claim 3, wherein the dosage form of the weeding composition is any one of powder, granules and tablets.
6. A herbicidal composition according to claim 5, wherein the herbicidal composition is in the form of any one of soluble powder, soluble granule, soluble tablet, powdered milk, water dispersible granule, wettable powder, water dispersible tablet, powdered milk, and oil dispersible powder.
7. A herbicidal composition according to claim 3, wherein said herbicidal composition is in the form of any one of microcapsule suspension, dispersible liquid, emulsifiable concentrate, aqueous emulsion, microemulsion, dispersible oil suspension, suspoemulsion, soluble liquid, ultra-low volume liquid.
8. Use of a herbicidal composition as claimed in any one of claims 1 to 7 for controlling unwanted vegetation.
9. Use of the herbicidal composition according to claim 8 for controlling unwanted vegetation, wherein the locus of the unwanted vegetation is a paddy field.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101965839A (en) * | 2010-09-17 | 2011-02-09 | 北京颖新泰康国际贸易有限公司 | Weedicide composition and use thereof |
| CN101965840A (en) * | 2010-09-17 | 2011-02-09 | 北京颖新泰康国际贸易有限公司 | Herbicide composition and application thereof |
| CN102461509A (en) * | 2010-11-19 | 2012-05-23 | 南京华洲药业有限公司 | Hybrid weeding composite containing Bispyribac-sodium and fluroxypyr and application of hybrid weeding composite |
| CN105707087A (en) * | 2014-12-04 | 2016-06-29 | 江苏龙灯化学有限公司 | Synergistic weeding composition |
-
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101965839A (en) * | 2010-09-17 | 2011-02-09 | 北京颖新泰康国际贸易有限公司 | Weedicide composition and use thereof |
| CN101965840A (en) * | 2010-09-17 | 2011-02-09 | 北京颖新泰康国际贸易有限公司 | Herbicide composition and application thereof |
| CN102461509A (en) * | 2010-11-19 | 2012-05-23 | 南京华洲药业有限公司 | Hybrid weeding composite containing Bispyribac-sodium and fluroxypyr and application of hybrid weeding composite |
| CN105707087A (en) * | 2014-12-04 | 2016-06-29 | 江苏龙灯化学有限公司 | Synergistic weeding composition |
Non-Patent Citations (2)
| Title |
|---|
| "芳氧苯氧基丙酸酯类除草剂的应用进展";刘博宏等;《农药科学与管理》;20110215;第32卷(第2期);第20-22页 * |
| 新除草剂氟硫草定（Dithiopyr);M.Fujiyanma等;《农药》;19910131;第30卷(第1期);第45页 * |
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