CN104430452A - Herbicidal composition containing iodosulfuron-methyl sodium and pyroxsulam - Google Patents
Herbicidal composition containing iodosulfuron-methyl sodium and pyroxsulam Download PDFInfo
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- CN104430452A CN104430452A CN201410709660.7A CN201410709660A CN104430452A CN 104430452 A CN104430452 A CN 104430452A CN 201410709660 A CN201410709660 A CN 201410709660A CN 104430452 A CN104430452 A CN 104430452A
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- iodosulfuron
- methyl
- sodium
- grass amine
- sulphur grass
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Abstract
The invention discloses a herbicidal composition containing iodosulfuron-methyl sodium and pyroxsulam. The herbicidal composition comprises iodosulfuron-methyl sodium and pyroxsulam as active ingredients, and the balance of a pesticide adjuvant, wherein the ratio of the iodosulfuron-methyl sodium to the pyroxsulam in the herbicidal composition in parts by mass is (1:5) to (5:1); and the total mass percentage of the iodosulfuron-methyl sodium and the pyroxsulam in the herbicidal composition is 3%-94%. According to the application requirements, the herbicidal composition can be prepared into one of a dispersible oil suspending agent, a suspending agent, wettable powder and water dispersible granules, and is used for preventing and killing annual weeds in winter wheat fields.
Description
Technical field
The present invention relates to a kind of Herbicidal combinations containing iodosulfuron-methyl-sodium and pyridine sulphur grass amine, for preventing and treating winter wheat field annual weed.
Background technology
Chemical method weeding is agriculturally one of Main Means controlling weeds.In recent years, because some weed killer herbicide kind large area are used alone, a lot of weeds have been caused to develop immunity to drugs.Meanwhile, grass when weeds occur is mutually complicated, and grassy weed, broad leaved weed, the mixed life of nutgrass flatsedge multiclass weeds, single variety weed killer herbicide uses can not solve farmland weed, all can show defect in a certain respect and limitation.Variety classes weed killer herbicide mixture, have herbicidal spectrum wide, promote actual effect, delay the advantage such as herbicide resistance, time and labour saving.
Iodosulfuron-methyl-sodium belongs to sulfonylurea herbicide, is the inhibitor of acetolactate synthase, and namely grass cutting blade stops growing after absorbing medicament, blade chlorisis, then withered, prevents and kill off broad leaved weed for wheat paddock.
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, accumulate at growing point, suppress acetolactate synthestase, cannot branched-chain amino acid be synthesized, and then affect the synthesis of protein, cause weeds to stop growing, yellow, then dead, pyridine sulphur grass amine to the main grassy weed bromegrass of wheat paddock, amur foxtail excellent, anti-part broad leaved weed of simultaneously holding concurrently.
Variety classes weed killer herbicide mixture, have herbicidal spectrum wide, promote actual effect, delay herbicide resistance, time and labour saving advantage.Being screened by formulation of pesticide, 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 recipe determination of the present inventor to iodosulfuron-methyl-sodium and pyridine sulphur grass amine conducts in-depth research, find that iodosulfuron-methyl-sodium and pyridine sulphur grass amine carry out mixture, there is synergistic effect in certain mixed ratio scope to winter wheat field annual weed, after further study, complete 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 are good and the lasting period is long, are conducive to the Herbicidal combinations of the farmland weed comprehensive regulation.
Another object of the present invention is used for preventing and kill off farmland weed by this Herbicidal combinations, is particularly useful for winter wheat field annual weed.
Technical scheme: for achieving the above object, the invention provides a kind of Herbicidal combinations containing iodosulfuron-methyl-sodium and pyridine sulphur grass amine, the ratio of quality and the number of copies of iodosulfuron-methyl-sodium and pyridine sulphur grass amine is 1:5 ~ 5:1, iodosulfuron-methyl-sodium and the mass percent of pyridine sulphur grass amine quality summation in Herbicidal combinations are 3% ~ 94%, and all the other are insecticides adjuvant.
Herbicidal combinations of the present invention is prepared into any one formulation being applicable to agriculturally using by known method, reasonable formulation dispersibles oil-suspending agent, suspending agent, wetting powder, water dispersible granules, the processing technology of various preparation is prior art, can change to some extent according to different situations.
The auxiliary agent used in Herbicidal combinations of the present invention comprises solvent, emulsifier, wetting agent, stabilizing agent, dispersant, thickener, pH adjusting agent, defoamer, antifreezing agent, packing agent etc., and to be of value to active ingredient stable and play the known substance of drug effect in the formulation, be all various compositions that are conventional in pesticidal preparations or permission use, concrete composition and consumption are determined by test according to recipe requirements.
Product described in the invention can the form of finished product preparation provide, and namely in composition, each material mixes, and the composition of composition also can the form of single dose provide, and directly mixes in tank or bucket, be then diluted to required concentration before using.
Herbicidal combinations of the present invention, adopts cauline leaf spray method to use in winter wheat field annual weed 2 ~ 5 leaf phase, also can adopt other operation techniques agriculturally applied as required.
The frequency of administration of Herbicidal combinations of the present invention and amount of application change with weather conditions and the change of weeds situation, can reach the object of preventing and kill off by using suitable dosage.
The technology of the present invention is originated:
For understanding iodosulfuron-methyl-sodium and pyridine sulphur grass amine mixture further to the synergy of weeds, the present inventor has carried out formulation screening test to iodosulfuron-methyl-sodium and pyridine sulphur grass amine mixture:
Test material:
Descurainia sophia [Descuminia sophia (L.) webb.Ex Prantl] (field collection seed).
Amur foxtail [Alopecurus aequalis Sobol] (field collection seed).
Test apparatus:
Controlled illumination box; The accurate laboratory spray tower of POTTER; Electronic balance (sensibility reciprocal 0.1mg); Micropipette rifle etc.
Test method:
The purity first taking certain mass is the former medicine of 98% iodosulfuron-methyl-sodium, the former medicine of 96.5% pyridine sulphur grass amine, add the Tween 80 aqueous solution dilution that acetone fully dissolves rear use 0.1%, be mixed with single dose mother liquor respectively, arrange serial proportioning according to mixture object, each proportioning arranges 5 ~ 7 concentration gradients.Select representative susceptible weeds seed according to single dose herbicide spectrum, be cultured to 3 leaf 1 hearts for subsequent use.By select numbering the process of weeds cauline leaf after, to be placed in illumination box incubated at room temperature 20 days, to 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 agent EC
50/ reagent agent EC
50) × 100
Theoretical toxicity index (the TTI)=percentage composition of A (in the toxicity index × mixture of the A)+percentage composition of B (in the toxicity index × mixture of B)
Co-toxicity coefficient (CTC)=[the theoretical toxicity index (TTI) of mixture actual measurement toxicity index (ATI)/mixture] × 100
Measurement result shows, iodosulfuron-methyl-sodium and pyridine sulphur grass amine, between mixed ratio 1:5 ~ 5:1, have obvious synergy or summation action.The mixed ratio of iodosulfuron-methyl-sodium and pyridine sulphur grass amine is when 5:1 and 1:3, and the most obvious to the synergistic effect of Descurainia sophia and amur foxtail, co-toxicity coefficient reaches 143.22 and 135.52 respectively.
Table 1, different ratio iodosulfuron-methyl-sodium and pyridine sulphur grass amine is to the synergy measurement result table of Descurainia sophia
Table 2, different ratio iodosulfuron-methyl-sodium and pyridine sulphur grass amine measures the synergy of amur foxtail
Herbicidal combinations provided by the invention has following beneficial effect:
1, Herbicidal combinations provided by the invention, obvious synergistic effect is shown in certain ratio range, the control efficiency of composition is significantly improved than single dose, reduce the using dosage of agricultural chemicals, decrease times for spraying, reduce drug cost, decrease the adverse effect of agricultural chemicals to ecotope.
2, Herbicidal combinations provided by the invention, the combination of two kinds of active ingredients, expand herbicide spectrum, a drug can solve weed problem, compensate for defect when single dose uses and limitation.
3, Herbicidal combinations provided by the invention, drug effect plays rapidly, and the lasting period is long, and use cost is low, easy to use, time saving and energy saving, and it applies huge economic benefit and social benefit.
Embodiment
In order to make object of the present invention, technical scheme and advantage more short and sweet, the following specific embodiment of the present invention is described, but the present invention is only limitted to absolutely not these examples.The following stated is only the good embodiment of the present invention, only for describing the present invention, can not be interpreted as the restriction to scope of the present invention.It should be pointed out that all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Example of formulations one (12% iodosulfuron-methyl-sodium pyridine sulphur grass amine wetting powder)
Mix entering in blender after above-mentioned formula in proportion coarse crushing, then after air-flow crushing, namely obtain 12% iodosulfuron-methyl-sodium pyridine sulphur grass amine wetting powder.
Example of formulations two (10% iodosulfuron-methyl-sodium pyridine sulphur grass amine dispersibles oil-suspending agent)
By above-mentioned formula Central Plains medicine, solvent, emulsifiers dissolve uniformly oil phase; Under high velocity agitation, the obtained 10% iodosulfuron-methyl-sodium pyridine sulphur grass amine of mixing dispersibles oil-suspending agent.
Example of formulations three (10% iodosulfuron-methyl-sodium pyridine sulphur grass amine suspending agent)
Above-mentioned formula is pulverized in proportion in advance, then adds in sand mill and grind, the obtained 10% iodosulfuron-methyl-sodium pyridine sulphur grass amine suspending agent of allotment after high shear mixing.
Example of formulations four (12% iodosulfuron-methyl-sodium pyridine sulphur grass amine water dispersible granules)
By above-mentioned formula dry pulverization process, granulation, drying, the obtained 12% iodosulfuron-methyl-sodium pyridine sulphur grass amine water-dispersible granules of screening in proportion.
Field control effectiveness test embodiment one: field control effectiveness test reagent agent and dispenser dosage to winter wheat field annual weed:
(1) 12% iodosulfuron-methyl-sodium pyridine sulphur grass amine wetting powder (2% iodosulfuron-methyl-sodium 10% pyridine sulphur grass amine), mu 9 grams, preparation (1#).
(2) 10% iodosulfuron-methyl-sodium pyridine sulphur grass amine dispersible oil-suspending agent (2% iodosulfuron-methyl-sodium 8% pyridine sulphur grass amine), mu 11.25 grams, preparation (2#).
(3) 10% iodosulfuron-methyl-sodium pyridine sulphur grass amine suspending agents (4% iodosulfuron-methyl-sodium 6% pyridine sulphur grass amine), mu 15 grams, preparation (3#).
(4) 12% iodosulfuron-methyl-sodium pyridine sulphur grass amine water dispersible granules (3% iodosulfuron-methyl-sodium 9% pyridine sulphur grass amine), mu 10 grams, preparation (4#).
(5) 1.25% iodosulfuron-methyl-sodium water dispersible granules, mu 19 grams, preparation (5#).
(6) 7.5% pyridine sulphur grass amine water dispersible granules, mu 12 grams, preparation (6#).
Dispenser period: weeds 2 ~ 5 leaf phase, be watered even spraying.
Prevent and kill off object: bromegrass, amur foxtail, Descurainia sophia, Veronica, shepherd's purse.
Result of the test is in table 3, and as can be seen from the test results: after medicine 25 days, the average preventive effect of Herbicidal combinations of the present invention to winter wheat field annual weed reaches more than 88%.Herbicidal combinations of the present invention is significantly better than the single dose of contrast, and expand herbicide spectrum, synergistic effect is remarkable, and quick-acting and lasting period are obviously better than single dose.
Table 3, control winter wheat field annual weed field control effectiveness test result
Claims (4)
1. one kind contains the Herbicidal combinations of iodosulfuron-methyl-sodium and pyridine sulphur grass amine, it is characterized in that: active ingredient is iodosulfuron-methyl-sodium and pyridine sulphur grass amine, iodosulfuron-methyl-sodium and the ratio of quality and the number of copies of pyridine sulphur grass amine in Herbicidal combinations are 1:5 ~ 5:1, and iodosulfuron-methyl-sodium and the mass percent of pyridine sulphur grass amine quality summation in Herbicidal combinations are 3% ~ 94%.
2. a kind of Herbicidal combinations containing iodosulfuron-methyl-sodium and pyridine sulphur grass amine according to claim 1, it is characterized in that: also use and acceptable insecticides adjuvant, to be processed into the suitable formulations of pesticide containing agriculturally allowing in described Herbicidal combinations.
3. a kind of Herbicidal combinations containing iodosulfuron-methyl-sodium and pyridine sulphur grass amine according to claim 1 and 2, is characterized in that: its formulation dispersibles the one in oil-suspending agent, suspending agent, wetting powder, water dispersible granules.
4. a kind of Herbicidal combinations containing iodosulfuron-methyl-sodium and pyridine sulphur grass amine as requested described in 1, is characterized in that: be applicable to prevent and kill off winter wheat field annual weed.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410709660.7A CN104430452A (en) | 2014-11-26 | 2014-11-26 | Herbicidal composition containing iodosulfuron-methyl sodium and pyroxsulam |
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| CN201410709660.7A CN104430452A (en) | 2014-11-26 | 2014-11-26 | Herbicidal composition containing iodosulfuron-methyl sodium and pyroxsulam |
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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 |
| CN1761395A (en) * | 2003-03-13 | 2006-04-19 | 巴斯福股份公司 | Synergistically acting herbicidal mixtures |
| WO2011107741A1 (en) * | 2010-03-05 | 2011-09-09 | Syngenta Participations Ag | Herbicidal composition comprising a mixture of a first herbicide and pinoxaden |
-
2014
- 2014-11-26 CN CN201410709660.7A patent/CN104430452A/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 |
| CN1761395A (en) * | 2003-03-13 | 2006-04-19 | 巴斯福股份公司 | Synergistically acting herbicidal mixtures |
| WO2011107741A1 (en) * | 2010-03-05 | 2011-09-09 | Syngenta Participations Ag | Herbicidal composition comprising a mixture of a first herbicide and pinoxaden |
Non-Patent Citations (1)
| Title |
|---|
| PATRICK W. GEIER等: "Pyroxsulam Compared with Competitive Standards for Efficacy in Winter Wheat", 《WEED TECHNOLOGY》 * |
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