CN115380904A - Weeding composition and herbicide thereof - Google Patents
Weeding composition and herbicide thereof Download PDFInfo
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- CN115380904A CN115380904A CN202210922702.XA CN202210922702A CN115380904A CN 115380904 A CN115380904 A CN 115380904A CN 202210922702 A CN202210922702 A CN 202210922702A CN 115380904 A CN115380904 A CN 115380904A
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- herbicide
- penoxsulam
- weeds
- butachlor
- herbicidal composition
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N37/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids
- A01N37/18—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing the group —CO—N<, e.g. carboxylic acid amides or imides; Thio analogues thereof
- A01N37/26—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing the group —CO—N<, e.g. carboxylic acid amides or imides; Thio analogues thereof containing the group; Thio analogues 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
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/32—Ingredients for reducing the noxious effect of the active substances to organisms other than pests, e.g. toxicity reducing compositions, self-destructing compositions
-
- 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
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01P—BIOCIDAL, PEST REPELLANT, PEST ATTRACTANT OR PLANT GROWTH REGULATORY ACTIVITY OF CHEMICAL COMPOUNDS OR PREPARATIONS
- A01P13/00—Herbicides; Algicides
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- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Environmental Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Plant Pathology (AREA)
- Zoology (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Dentistry (AREA)
- Agronomy & Crop Science (AREA)
- Toxicology (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention relates to the field of weeding, in particular to A01P13/00, and more particularly relates to a weeding composition and a herbicide thereof. The weeding composition comprises the following effective components in percentage by weight (20-50): 1 butachlor and penoxsulam. According to the application, butachlor and penoxsulam are compounded in a reasonable ratio, a proper pesticide formulation is designed, and then a special safener is added, so that the herbicide shows an obvious synergistic effect on field weeds. In the rice needle setting period, the rice is reasonably used by-2 leaves and one heart. The weeding composition has a strong contact killing effect on unearthed resistant barnyard grass, moleplant seed, large crabgrass and broad-leaved weeds, has a certain sealing effect on unearthed weeds, and can remarkably reduce the density of early weeds by combining killing and sealing.
Description
Technical Field
The invention relates to the field of weeding, in particular to A01P13/00, and more particularly relates to a weeding composition and a herbicide thereof.
Background
In recent years, with the reduction of rural labor force, a light and convenient direct seeding mode of rice is more and more accepted by farmers, but direct seeding rice and weeds grow simultaneously, so that the density of weeds is high, the types of weeds are multiple, and a new challenge is provided for preventing and controlling weeds in rice fields. The novel chemical herbicide is slow in research and development speed, and can effectively deal with the situation that the variety of farmland weeds is less and less; the conventional stem and leaf treatment resistance of paddy fields is becoming more and more severe, and the resistance of the pre-emergence herbicide is relatively slowly developed.
In addition, in the using process of the direct-seeding herbicide for rice, a single herbicide is used for a long time, so that the resistance is increased, the pesticide effect is difficult to ensure, and different kinds of pesticides are simply mixed, so that the compatibility problem exists, and the pesticide effect is influenced. Therefore, the key point for solving the weeds in the direct-seeding paddy fields is to select a proper pre-emergence herbicide for compounding.
Disclosure of Invention
In view of the problems in the prior art, the first aspect of the present invention provides a herbicidal composition comprising the following effective ingredients in the weight ratio of (20-50): 1 butachlor and penoxsulam.
Butachlor is an amide herbicide that affects protein formation by inhibiting the activity of weed seed proteases during germination, ultimately leading to weed death. The butachlor can effectively prevent and kill annual weeds and small-particle broadleaf weeds in sprouts, such as barnyard grass, large crabgrass, moleplant seeds, tonguet, carigna, small-leaved lemongrass, allium mongolicum regel and the like, has good control effect, and has good safety to rice, and the application window period is relatively short.
Penoxsulam belongs to triazolopyrimidine sulfonamide herbicides, and acts by inhibiting acetolactate synthase to inhibit the growing point of plants, thereby causing necrosis and death of the plants. Penoxsulam is a broad-spectrum stem and leaf treating agent for rice fields, can effectively prevent and kill barnyard grass, moleplant seed and annual sedge weeds, and is effective on a plurality of broadleaf weeds. But prolonged single use in large amounts results in increased weed resistance. But the compound has better soil activity, longer lasting period and better sealing effect on barnyard grass and most broadleaf grasses.
The butachlor and the penoxsulam are mixed for use as the medicament in the closed stage of the paddy field, can expand the insecticidal spectrum, and has good control effect on resistant weeds such as moleplant seed, digitaria sanguinalis and barnyard grass in the paddy field. And the window period of medication is prolonged, the dosage and the medication frequency are reduced, the use cost is reduced, and the environmental pollution is also reduced. Under the reasonable proportioning effect of the application, the dosage of the active ingredients can be obviously reduced when the synergistic effect is shown. The herbicidal composition claimed in the application has remarkable synergistic effect within a proper proportioning range.
Preferably, the weight ratio of butachlor to penoxsulam is 29.
A herbicide containing the weeding composition, wherein the weeding composition accounts for 0.2-70wt%; preferably, the herbicidal composition comprises 60wt%.
In one embodiment, the herbicide is in the form of emulsifiable solution, microemulsion, aqueous emulsion, dispersible oil suspension, suspoemulsion, granule, wettable powder, water dispersible granule, microcapsule suspension, and microcapsule suspension-suspension agent; dispersible oil suspensions are preferred.
When the herbicide is in the form of a dispersible oil suspension concentrate, in one embodiment, the herbicide comprises 55-65wt% of the herbicidal composition, 3-7wt% of the safener, 1-5wt% of the stabilizer, 3-6wt% of the wetting dispersant, 10-17wt% of the emulsifier, 1-5wt% of the thickener, 0.3-0.6wt% of the structure modifier, with the solvent making up to 100wt%.
In a preferred embodiment, the herbicide comprises 60% by weight of the herbicidal composition, 6% by weight of safener, 3% by weight of stabilizer, 5% by weight of wetting dispersant, 12.2% by weight of emulsifier, 1.5% by weight of thickener, 0.5% by weight of structure regulator, the solvent making up to 100% by weight.
Preferably, the safener is selected from one or more of fenclorim and lecithin, more preferably fenclorim.
The application uses fenclorim as a safener, solving the phytotoxicity risk of the conventional butachlor-containing preparation product.
Preferably, the stabilizer is selected from one or more of epoxidized soybean oil and triphenyl phosphate; more preferably epoxidized soybean oil.
Preferably, the solvent is selected from one or more of vegetable oil solvents, methyl oleate, alcohol solvents and aromatic hydrocarbon solvents, more preferably vegetable oil solvents, and even more preferably methyl oleate.
Preferably, the thickener is organic bentonite and/or fumed silica; more preferably, the weight ratio of the two is (1-3): 1, more preferably 2.
Preferably, the structural regulator is structural regulator TK under the trademark featotack02, available from OXITENO.
Preferably, the wetting dispersant is selected from one or more of polycarboxylate dispersants, lignin sulfonate and naphthalene sulfonate formaldehyde condensate, and is more preferably polycarboxylate dispersants.
Preferably, the polycarboxylate-type dispersant has an acid value of 18 to 23mgKOH/g, more preferably 19 to 21.5mgKOH/g.
Preferably, the polycarboxylate-type dispersant is SP-OF3498D.
SP-OF 3498D's addition has effectively improved grinding efficiency and dispersion stability in this application, inhibits dispersible oil suspending agent creaming.
In one embodiment, the emulsifier is selected from one or more of calcium dodecylbenzenesulfonate, tristyrylphenol polyoxyethylene ether, and anionic and nonionic mixed emulsifiers.
Preferably, the negative nonionic mixed emulsifier is SP-OF3462.
Preferably, the weight ratio of the anionic and nonionic mixed emulsifier to the calcium dodecylbenzene sulfonate to the tristyrylphenol polyoxyethylene ether is 6:3:3.2.
preferably, when the herbicide is a dispersible oil-based suspension concentrate, the average particle size of the herbicide is 2 to 4 μm.
In one embodiment, the method of preparing the herbicide comprises: mixing butachlor and solvent, adding wetting dispersant and emulsifier, mixing, adding thickener, stirring, adding penoxsulam under shearing, and grinding to particle size of 2-4 μm.
At present, herbicides acting on rice are all rice transplanting fields, and only 5 registered rice herbicides are available at present, wherein two herbicides are granules and can only be applied in a broadcasting way; one preparation is missible oil, the penoxsulam is required to be completely dissolved by adopting a polar solvent, and the penoxsulam is inconvenient to use and is not environment-friendly; the two formulations are suspoemulsions, water is used as a dispersion medium, the requirement of water-based development is met, and no synergistic effect is generated compared with a methyl oleate dispersion medium capable of dispersing an oil suspending agent.
In the using process of the direct seeding herbicide for rice, the herbicide is singly used for a long time and is easy to generate resistance, so that the use amount of the herbicide needs to be increased, and the environmental pollution is serious. In addition, two different pesticides are simply mixed for use, so that the risk of poor compatibility is increased, the phenomena of precipitation, turbidity and the like occur, farmers cannot normally use the pesticides, and the chemical injury is aggravated. The applicant comprises in the present application (20-50) by weight: 1, when the weeding composition of the butachlor and the penoxsulam is researched, precipitation and turbidity can occur. The applicant found in experiments that, when the thickener is used in a weight ratio of (1-3): 1, and the emulsifier is SP-OF3462, calcium dodecylbenzene sulfonate and tristyrylphenol polyoxyethylene ether in a specific proportion, the obtained dispersible oil suspending agent has no problems OF precipitation and turbidity even after being placed for a period OF time, and the applicant thinks that the dispersible oil suspending agent possibly has the difference between the rigid structure and the flexible structure OF butachlor and penoxsulam, particularly the proportion OF the dispersible oil suspending agent is greatly different, so that the dispersibility OF the butachlor and the penoxsulam is increased, the dispersibility OF the penoxsulam and the butachlor is restricted mutually, a certain movement resistance is exerted on butachlor and penoxsulam molecules under the action OF the specific emulsifier and the thickener, the acting force among the same molecules is prevented, and the hydrophilic chain segment and the side chain OF the hydrophobic oil suspending agent play roles in three-dimensional stabilization OF the butachlor and the penoxsulam under the action OF the polycarboxylate dispersant.
In one embodiment, the herbicidal composition is used to control resistant weeds in direct seeded rice.
Resistant weeds in this application include, but are not limited to, barnyard grass, moleplant, large crabgrass, and the like.
In one embodiment, the herbicide is applied in a mode of flight control.
Compared with the prior art, the invention has the following beneficial effects:
according to the application, butachlor and penoxsulam are compounded in a reasonable ratio, a proper pesticide formulation is designed, and then a special safener is added, so that the herbicide shows an obvious synergistic effect on field weeds. In the rice needle-setting period, the rice is reasonably used by-2 leaves and one core. The weeding composition has a strong contact killing effect on unearthed resistant barnyard grass, moleplant seeds, large crabgrass and broadleaf weeds, also has a certain sealing effect on unearthed weeds, and can obviously reduce the density of early-stage weeds by the combination of sealing and killing.
In addition, the herbicide is suitable for flying prevention pesticide application, reduces labor intensity and improves acting efficiency.
Drawings
FIG. 1 is a field test chart of the control effect of the herbicide of example 1 of the present application.
Detailed Description
The present invention will be described below by way of specific embodiments, but is not limited to the specific examples given below.
Example 1
A weeding composition comprises the effective components of butachlor and penoxsulam in a weight ratio of 29.
The herbicide comprises the following components in percentage by weight:
the structural regulator TK is available from OXITENO under the trademark featotack 02.
The emulsifier is SP-OF3462, calcium dodecylbenzene sulfonate and tristyrylphenol polyoxyethylene ether in a weight ratio OF 6. Wherein the tristyrylphenol polyoxyethylene ether is purchased from Nanjing Hongliu chemical Co., ltd, and has a trade name of 601.
The preparation method of the herbicide comprises the following steps:
mixing butachlor and methyl oleate, adding wetting dispersant and emulsifier, mixing, adding organic bentonite and fumed silica, continuously stirring and mixing, adding penoxsulam under high-speed shearing, grinding under zirconium bead medium until the particle size is 2-4 μm.
Field efficacy test
A place: long town collection of Liuan city, anhui province
Dosage: example 1 herbicide (dosage of formulation: 75 ml/mu)
Time: seeding in 2021 year 5 and 6 days, applying medicine in 5 and 13 days (applying medicine in 7 days after seeding)
As a result: tracking 21 days after application, and basically no grass occurs in the field, as shown in figure 1, the control effect on gramineae and broadleaf grass such as barnyard grass, moleplant seed, bud, ludwigia prostrata and the like in the paddy field is more than 95 percent, and the control effect is excellent; and is safe to rice.
Example 2
The herbicidal composition is as in example 1.
The herbicide was the same as in example 1 except that 3wt% of organobentonite and 0wt% of fumed silica were used.
The herbicide was prepared as in example 1.
Example 3
The herbicidal composition is as in example 1.
The herbicide is the same as example 1 except that the emulsifier is SP-OF3462.
The herbicide was prepared as in example 1.
Example 4
The herbicidal composition is as in example 1.
The herbicide is the same as example 1 except that the wetting and dispersing agent is NUOSPERSE FX 600, no SP-OF3498D is added.
The herbicide was prepared as in example 1.
The herbicides of examples 1 to 4 were respectively placed in a thermostatic oven at 54 ± 2 ℃, and stored for 14 days, and whether delamination and precipitation occurred or not was observed, and if none occurred, the herbicide was qualified, otherwise, the herbicide was not qualified.
TABLE 1
Claims (10)
1. A weeding composition is characterized by comprising the following effective components in percentage by weight (20-50): 1 butachlor and penoxsulam.
2. A herbicidal composition according to claim 1, wherein the weight ratio of butachlor and penoxsulam is 29.
3. A herbicide comprising the herbicidal composition of claim 1 or 2, wherein the herbicidal composition comprises from 0.2 to 70% by weight.
4. The herbicide as claimed in claim 3, wherein the dosage form of said herbicide comprises any one of emulsifiable concentrate, microemulsion, emulsion in water, dispersible oil suspension, suspoemulsion, granule, wettable powder, water dispersible granule, microcapsule suspension, and microcapsule suspension-suspension.
5. The herbicide formulation of claim 4, wherein the herbicide is in the form of a dispersible oil suspension comprising 55-65wt% of the herbicidal composition, 3-7wt% of the safener, 1-5wt% of the stabilizer, 3-6wt% of the wetting dispersant, 10-17wt% of the emulsifier, 1-5wt% of the thickener, 0.3-0.6wt% of the structure modifier, and the solvent is supplemented to 100wt%.
6. A herbicide formulation as claimed in claim 5, wherein the safener is selected from one or more of fenclorim and lecithin.
7. The herbicide as claimed in claim 6, wherein said solvent is selected from one or more of vegetable oil solvents, alcohol solvents and aromatic solvents.
8. A herbicide formulation as claimed in any one of claims 5 to 7, wherein said stabilizer is selected from one or more of epoxidized soybean oil and triphenyl phosphate.
9. A herbicide formulation, as claimed in claim 8, wherein said wetting and dispersing agent is selected from one or more of polycarboxylate-type dispersants, lignosulfonates, naphthalene sulfonate formaldehyde condensates.
10. The herbicide formulation of claim 9, wherein the average particle size of the herbicide is from 2 to 4 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210922702.XA CN115380904A (en) | 2022-08-02 | 2022-08-02 | Weeding composition and herbicide thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210922702.XA CN115380904A (en) | 2022-08-02 | 2022-08-02 | Weeding composition and herbicide thereof |
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| CN115380904A true CN115380904A (en) | 2022-11-25 |
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| CN202210922702.XA Pending CN115380904A (en) | 2022-08-02 | 2022-08-02 | Weeding composition and herbicide thereof |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001233718A (en) * | 2000-02-22 | 2001-08-28 | Dow Chem Japan Ltd | Herbicide composition |
| CN101647450A (en) * | 2009-08-28 | 2010-02-17 | 北京燕化永乐农药有限公司 | Herbicide compound containing penoxsulam |
| CN102984942A (en) * | 2010-02-03 | 2013-03-20 | 陶氏益农公司 | Synergistic herbicidal composition containing penoxsulam and butachlor |
| CN103798255A (en) * | 2009-08-28 | 2014-05-21 | 陶氏益农公司 | Weed killer composition containing penoxsulam |
| CN103875686A (en) * | 2009-08-28 | 2014-06-25 | 陶氏益农公司 | Penoxsulam-containing herbicide composition |
| CN108707010A (en) * | 2018-06-28 | 2018-10-26 | 达州市兴隆化工有限公司 | A kind of weeding, fertilising, the more effect Rice medicine fertilizers of volume increase |
| CN112825861A (en) * | 2021-02-04 | 2021-05-25 | 四川眉山凯尔化工有限公司 | Compound pesticide herbicide |
-
2022
- 2022-08-02 CN CN202210922702.XA patent/CN115380904A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001233718A (en) * | 2000-02-22 | 2001-08-28 | Dow Chem Japan Ltd | Herbicide composition |
| CN101647450A (en) * | 2009-08-28 | 2010-02-17 | 北京燕化永乐农药有限公司 | Herbicide compound containing penoxsulam |
| CN103798255A (en) * | 2009-08-28 | 2014-05-21 | 陶氏益农公司 | Weed killer composition containing penoxsulam |
| CN103875686A (en) * | 2009-08-28 | 2014-06-25 | 陶氏益农公司 | Penoxsulam-containing herbicide composition |
| CN102984942A (en) * | 2010-02-03 | 2013-03-20 | 陶氏益农公司 | Synergistic herbicidal composition containing penoxsulam and butachlor |
| CN108707010A (en) * | 2018-06-28 | 2018-10-26 | 达州市兴隆化工有限公司 | A kind of weeding, fertilising, the more effect Rice medicine fertilizers of volume increase |
| CN112825861A (en) * | 2021-02-04 | 2021-05-25 | 四川眉山凯尔化工有限公司 | Compound pesticide herbicide |
Non-Patent Citations (1)
| Title |
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| 夏贤格;朱文达;颜冬冬;李林;龚艳;: "丁草胺和五氟磺草胺复配制剂在水稻移栽田应用效果评价", 南方农业学报 * |
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