CN103749488A - Weeding composition containing clopyralid and pyroxsulam - Google Patents
Weeding composition containing clopyralid and pyroxsulam Download PDFInfo
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- CN103749488A CN103749488A CN201310737734.3A CN201310737734A CN103749488A CN 103749488 A CN103749488 A CN 103749488A CN 201310737734 A CN201310737734 A CN 201310737734A CN 103749488 A CN103749488 A CN 103749488A
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- clopyralid
- grass amine
- sulphur grass
- pyridine sulphur
- pyroxsulam
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Abstract
The invention discloses a weeding composition containing clopyralid and pyroxsulam, which comprises active ingredients (clopyralid and pyroxsulam) and the balance of pesticide adjuvants, wherein the weight ratio of the clopyralid to the pyroxsulam is 1:20-20:1, and the total mass of the clopyralid and pyroxsulam accounts for 5-70 mass percent of the weeding composition. The weeding composition can be prepared into dispersible oil suspending agent, suspending agent, wettable powder or water-dispersible granules according to application demands to prevent and eliminate annual weeds in wheat fields. The composition has obviously better effect on preventing and eliminating annual weeds in wheat fields than weedicides with single purpose, reduces the consumption, and postpones the drug resistance of weeds.
Description
Technical field
The present invention relates to a kind of Herbicidal combinations, is as active ingredient, for preventing and kill off wheat paddock annual weed take clopyralid and pyridine sulphur grass amine.
Background technology
Chemical method weeding is one of upper Main Means of controlling weeds of agricultural.In recent years, because some weed killer herbicide kind large area are used separately, caused a lot of weeds to develop immunity to drugs.Meanwhile, grass when weeds occur is complicated mutually, grassy weed, broad leaved weed, the mixed life of nutgrass flatsedge multiclass weeds, and single variety weed killer herbicide is used can not solve farmland weed, all can show defect and limitation in a certain respect.Variety classes weed killer herbicide mixture, have herbicidal spectrum wide, promote actual effect, delay herbicide resistance, time and labour saving advantage.
Clopyralid is a kind of artificial synthetic auxin, and its chemical constitution and many natural auxins are similar, but in the tissue of plant, have better persistence.It mainly the root by plant and leaf absorb then and conduct in plant corpus, so its conductive performance is stronger.After weeds dispenser, it is moved up and down and is transmitted to rapidly whole plant by the blade of plant or root absorption in plant corpus.Thereby the synthetic of DNA, RNA that the clopyralid of low concentration can stimulating plant and protein causes fissional out of control and unordered growth, finally causes restraining destroyed; The clopyralid of high concentration can suppress division and the growth of cell.
Pyridine sulphur grass amine is sulfonamides inner sucting conduction type, selectivity wheat paddock herbicide after seedling.By grass cutting blade, sheath portion, stem or root absorption, in growing point accumulation, suppress acetolactate synthestase, cannot synthesize branched-chain amino acid, and then affect the synthetic of protein, cause that weeds stop growing, yellow, then death.
Variety classes weed killer herbicide mixture, have herbicidal spectrum wide, promote actual effect, delay herbicide resistance, time and labour saving advantage.By formulation of pesticide, screening, can effectively improve actual control efficiency, reduce dosage, reduce costs, delay disease, worm, the drug-fast generation of crop smothering, is the important means that agricultural synthesis is administered.The inventor conducts in-depth research the formula screening of clopyralid and pyridine sulphur grass amine, find that clopyralid and pyridine sulphur grass amine carry out mixture, in certain mixed ratio scope, wheat paddock annual weed is had to synergy or summation action, after further study, completed the present invention.
Summary of the invention
The object of the invention is to solve in prior art to farmland weed develop immunity to drugs problem and actual control efficiency poor, provide a kind of efficient, low toxicity, quick-acting is good and the lasting period is long, is conducive to the Herbicidal combinations of the farmland weed comprehensive regulation.
Another object of the present invention be by this Herbicidal combinations for preventing and kill off farmland weed, be particularly useful for wheat paddock annual weed etc.
Technical scheme: a kind of Herbicidal combinations that contains clopyralid and pyridine sulphur grass amine, active ingredient is clopyralid and pyridine sulphur grass amine, the ratio of quality and the number of copies of clopyralid and pyridine sulphur grass amine is 20:1～1:20, clopyralid and the mass percent of pyridine sulphur grass amine quality summation in Herbicidal combinations are 5%～70%, and all the other are in agricultural chemicals, to allow to use and acceptable auxiliary element.
Herbicidal combinations of the present invention is prepared into and is applicable to upper any one formulation used of agricultural by known method, and reasonable formulation dispersibles oil-suspending agent, suspending agent, wetting powder, water dispersible granules.The processing technology of the various preparations of the present composition is prior art, according to different situations, can change to some extent.
The auxiliary agent using in Herbicidal combinations of the present invention comprises that solvent, emulsifier, wetting agent, stabilizing agent, dispersant, thickener, pH adjusting agent, defoamer, antifreezing agent, packing agent etc. are of value to the known substance of active ingredient stable and performance drug effect in preparation, be all various compositions conventional in pesticidal preparations or that permission is used, concrete composition and consumption require to determine by test according to formula.
Product described in the invention can finished product preparation form provide, in composition, each material mixes, the form that the composition of composition also can single dose provides, and before use, directly in tank or bucket, mixes, and is then diluted to needed concentration.The frequency of administration of the present composition and amount of application change with weather conditions and weeds situation, can be by using suitable dosage to reach the object of preventing and kill off.
Herbicidal combinations of the present invention is applicable to prevent and kill off farmland weed, especially wheat paddock annual weed.
Herbicidal combinations provided by the invention, adopts the method for spraying to use conventionally, also can adopt as required other operation techniques of the upper application of agricultural.
Compared with prior art, the invention has the advantages that:
1, two kinds of active ingredient compositely has synergistic function, than the independent use of single dose, has obviously improved the control efficiency to weeds, has expanded herbicide spectrum.
2, reduced agricultural chemicals usage amount, reduced use cost, alleviated pollution to environment, delayed herbicide resistance generation, increased service life of agricultural chemicals.
Embodiment
In order to understand better essence of the present invention, below in conjunction with embodiment, content of the present invention is described further, but can not be considered as limitation of the present invention.
Biologicall test embodiment mono-: formulation screening test
For further understanding clopyralid and the synergy of pyridine sulphur grass amine mixture to weeds, the inventor has carried out formulation screening test to clopyralid and pyridine sulphur grass amine mixture:
Test material:
Field thistle [Cirsium segetum] (field collection seed).
Amur foxtail [Alopecurus aequalis Sobol] (field collection seed).
Test apparatus:
Controlled illumination box; The accurate laboratory of POTTER spray tower; Electronic balance (sensibility reciprocal 0.1mg); Micropipette rifle etc.
Test method:
The purity that first takes certain mass is the former medicine of 95% clopyralid, the former medicine of 96.5% pyridine sulphur grass amine, add acetone fully to dissolve the Tween 80 aqueous solution dilution of rear use 0.1%, be mixed with respectively single dose mother liquor, according to mixture object, serial proportioning be set, each proportioning arranges 5～7 concentration gradients.According to single dose herbicide spectrum, select representative susceptible weeds seed, be cultured to 2 leaf 1 hearts standby.After selecting the weeds cauline leaf of numbering to process, be placed in illumination box incubated at room temperature 20 days, calculate control efficiency (fresh weight preventive effect or strain preventive effect), then with method of least squares calculate suppress in dense EC
50(95% confidence limit), then calculate co-toxicity coefficient (CTC) by the abundant method of Sun Yun.
Co-toxicity coefficient (CTC) >=120 shows as synergistic effect; Co-toxicity coefficient (CTC)≤80 shows as antagonism; 80 < co-toxicity coefficient (CTC) < 120 show as summation action.
Actual measurement toxicity index (ATI)=(standard medicament EC
50/ reagent agent EC
50) × 100.
Theoretical toxicity index (TTI)=(percentage composition of A in toxicity index × mixture of A)+(percentage composition of B in toxicity index × mixture of B)
Co-toxicity coefficient (CTC)=[the theoretical toxicity index of mixture actual measurement toxicity index (ATI)/mixture (TTI)] × 100.
Measurement result shows, clopyralid and pyridine sulphur grass amine, between mixed ratio 1:20～20:1, have obvious synergistic effect.
Table 1, different proportioning clopyralid and pyridine sulphur grass amine are measured the synergy of field thistle.
Table 2, different proportioning clopyralid and pyridine sulphur grass amine are measured the synergy of amur foxtail.
Example of formulations one: (31.5% clopyralid pyridine sulphur grass amine wetting powder)
Above-mentioned formula is entered in blender after coarse crushing and mixed in proportion, then after air-flow crushing, make to mix and make 31.5% clopyralid pyridine sulphur grass amine wetting powder.
Example of formulations two: (32% clopyralid pyridine sulphur grass amine dispersibles oil-suspending agent)
Above-mentioned formula Central Plains medicine, solvent, emulsifiers dissolve are become to even oil phase; Under high-speed stirred, mixing makes 32% clopyralid pyridine sulphur grass amine and dispersibles oil-suspending agent.
Example of formulations three: (31.5% clopyralid pyridine sulphur grass amine suspending agent)
Above-mentioned formula is pulverized in proportion in advance, then added in sand mill and grind, after high shear mixing, allotment makes 31.5% clopyralid pyridine sulphur grass amine suspending agent.
Example of formulations four: (32% clopyralid pyridine sulphur grass amine water dispersible granules)
By above-mentioned formula, dry pulverization process, granulation, dry, screening make 32% clopyralid pyridine sulphur grass amine water-dispersible granules in proportion.
Field control effectiveness test embodiment mono-: to the field control effectiveness test of spring wheat field annual weed
Reagent agent and dispenser dosage:
(1) 31.5% clopyralid pyridine sulphur grass amine wetting powder (30% clopyralid 1.5% pyridine sulphur grass amine), mu 22 grams, preparation (1#).
(2) 32% clopyralid pyridine sulphur grass amine dispersible oil-suspending agent (30% clopyralid 2% pyridine sulphur grass amine), mu 21 grams, preparation (2#).
(3) 31.5% clopyralid pyridine sulphur grass amine suspending agents (30% clopyralid 1.5% pyridine sulphur grass amine), mu 22 grams, preparation (3#).
(4) 32% clopyralid pyridine sulphur grass amine water dispersible granules (30% clopyralid 2% pyridine sulphur grass amine), mu 21 grams, preparation (4#).
(5) 30% clopyralid aquas, mu 18 grams, preparation (5#).
(6) 7.5% pyridine sulphur grass amine water dispersible granules, mu 0.8 gram, preparation (6#).
(7) clear water.
Dispenser period: 3～4 leaf phases of weeds, be watered even spraying.
Prevent and kill off object: field thistle, amur foxtail, chickweed, clearvers.
Result of the test is in Table 3.As can be seen from the test results: after medicine 16 days, Herbicidal combinations of the present invention reached more than 85% the average preventive effect of spring wheat field annual weed.Herbicidal combinations of the present invention, significantly better than the single dose of contrast, expands herbicide spectrum, and synergistic effect is remarkable, and quick-acting and lasting period are obviously better than single dose.
Table 3, control spring wheat field annual weed field control effectiveness test result (after medicine 16 days).
Claims (3)
1. a Herbicidal combinations that contains clopyralid and pyridine sulphur grass amine, it is characterized in that: active ingredient is clopyralid and pyridine sulphur grass amine, all the other are insecticides adjuvant, the ratio of quality and the number of copies of clopyralid and pyridine sulphur grass amine is 1:20～20:1, and clopyralid and the mass percent of pyridine sulphur grass amine quality summation in Herbicidal combinations are 5%～70%.
2. a kind of Herbicidal combinations that contains clopyralid and pyridine sulphur grass amine according to claim 1, is characterized in that: its formulation is the one dispersibling in oil-suspending agent, suspending agent, wetting powder, water dispersible granules.
3. a kind of Herbicidal combinations that contains clopyralid and pyridine sulphur grass amine according to claim 1, is characterized in that: be applicable to prevent and kill off wheat paddock annual weed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310737734.3A CN103749488A (en) | 2013-12-26 | 2013-12-26 | Weeding composition containing clopyralid and pyroxsulam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310737734.3A CN103749488A (en) | 2013-12-26 | 2013-12-26 | Weeding composition containing clopyralid and pyroxsulam |
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|---|---|
| CN103749488A true CN103749488A (en) | 2014-04-30 |
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ID=50516944
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1398266A (en) * | 2000-11-03 | 2003-02-19 | 美国陶氏益农公司 | N-(5,7-dimethoxy[1,2,4] triazolo[1,5-a]pyrimidin-2-yl) arylsulfonamide compounds and their use as herbicides |
| CN102487951A (en) * | 2011-12-01 | 2012-06-13 | 联保作物科技有限公司 | Wheatland weeding composition and preparation thereof |
| CN103222468A (en) * | 2013-04-22 | 2013-07-31 | 山东滨农科技有限公司 | Herbicide composition containing pyraflufen-ethyl and pyroxsulam |
-
2013
- 2013-12-26 CN CN201310737734.3A patent/CN103749488A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1398266A (en) * | 2000-11-03 | 2003-02-19 | 美国陶氏益农公司 | N-(5,7-dimethoxy[1,2,4] triazolo[1,5-a]pyrimidin-2-yl) arylsulfonamide compounds and their use as herbicides |
| CN102487951A (en) * | 2011-12-01 | 2012-06-13 | 联保作物科技有限公司 | Wheatland weeding composition and preparation thereof |
| CN103222468A (en) * | 2013-04-22 | 2013-07-31 | 山东滨农科技有限公司 | Herbicide composition containing pyraflufen-ethyl and pyroxsulam |
Non-Patent Citations (1)
| Title |
|---|
| 吴明荣等: "我国小麦田除草剂应用及杂草抗药性现状", 《农药》 * |
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Application publication date: 20140430 |
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