CN103918689A - Weeding composition containing thifensulfuron methyl and bromoxynil octanoate - Google Patents
Weeding composition containing thifensulfuron methyl and bromoxynil octanoate Download PDFInfo
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- CN103918689A CN103918689A CN201410119386.8A CN201410119386A CN103918689A CN 103918689 A CN103918689 A CN 103918689A CN 201410119386 A CN201410119386 A CN 201410119386A CN 103918689 A CN103918689 A CN 103918689A
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- bromoxynil octanoate
- thifensulfuronmethyl
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- thifensulfuron methyl
- bromoxynil
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Abstract
The invention discloses a weeding composition containing thifensulfuron methyl and bromoxynil octanoate. The weeding composition comprises active ingredients, namely thifensulfuron methyl and bromoxynil octanoate, and the balance being pesticide adjuvants, wherein a mass part ratio of thifensulfuron methyl to bromoxynil octanoate is 1:20 to 20:1; the total mass of thifensulfuron methyl and bromoxynil octanoate accounts for 3-80 percent in the pesticide composition. According to the application requirements, the weeding composition can be prepared into one of dispersible oil suspension, suspending agents, wettable powder and water dispersible granules and is used for controlling annual broadleaf weeds in wheat paddock. According to the composition, the effect of controlling the annual broadleaf weeds in winter wheat fields is obviously superior to that of weedicides with single purpose, the dosage is reduced, and the weedicide resistance of weeds is delayed.
Description
Technical field
The present invention relates to a kind of composition that contains thifensulfuronmethyl and bromoxynil octanoate, is as active ingredient, for preventing and treating wheat paddock annual broadleaf weed taking thifensulfuronmethyl and bromoxynil octanoate.
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 uses 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.
Thifensulfuronmethyl belongs to selective herbicide after inner sucting conduction type seedling, is branched-chain amino acid synthetic inhibitor, can suppress the biosynthesis of valine, leucine, isoleucine, stops cell division, and sensitive crop is stopped growing.Be mainly used in preventing and kill off the broad leaved weed between cereal crop winter wheat, barley, oat, corn field, as Amaranthus retroflexus, clearvers, broadcast ma wormwood artemisia, shepherd's purse, salsola collina, clearvers, Veronica, ox chickweed etc., invalid to shepherd's purse, field bindweed and grassy weed etc.
Bromoxynil octanoate is that after selectivity seedling, cauline leaf is processed contact killing type weed killer herbicide, mainly absorbed by blade, in plant corpus, carry out extremely limited conduction, by each process of inhibited photosynthesis, comprise and suppress photophosphorylation reaction and electronics transmission, particularly photosynthetic Hill reaction, make plant tissue downright bad rapidly, thereby reach herbicide object, when temperature is higher, speeding-up blade is withered.
Variety classes weed killer herbicide mixture, have herbicidal spectrum wide, promote actual effect, delay herbicide resistance, time and labour saving advantage.Screening 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 inventor conducts in-depth research the formula screening of thifensulfuronmethyl and bromoxynil octanoate, find that thifensulfuronmethyl and bromoxynil octanoate carry out mixture, in certain mixed ratio scope, wheat paddock annual broadleaf 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 composition pesticide of the farmland weed comprehensive regulation.
Another object of the present invention be by this composition pesticide for preventing and kill off farmland weed, be particularly useful for wheat paddock annual broadleaf weed.
Technical scheme of the present invention: for achieving the above object, the invention provides a kind of Herbicidal combinations that contains azoles thifensulfuronmethyl and bromoxynil octanoate, active ingredient is thifensulfuronmethyl and bromoxynil octanoate, the ratio of quality and the number of copies of thifensulfuronmethyl and bromoxynil octanoate is 1:20～20:1, and thifensulfuronmethyl and the bromoxynil octanoate gross mass mark percentage composition in composition is 3%～80%.
Herbicidal combinations of the present invention is prepared into and is applicable to upper any one formulation using 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, can change to some extent according to different situations.
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 prevents and kill off wheat paddock annual gramineae and part broad leaved weed.
Composition pesticide provided by the invention, adopts cauline leaf spray method to use in 3～4 leaf phases of weeds, also can adopt as required other operation techniques of the upper application of agricultural.
Herbicidal combinations provided by the invention has following beneficial effect:
1, Herbicidal combinations provided by the invention, in certain ratio range, show obvious synergistic effect, the control efficiency of composition is significantly improved than single dose, reduce the using dosage of agricultural chemicals, reduce medication number of times, reduce drug cost, reduced the adverse effect of agricultural chemicals to ecotope.
2, Herbicidal combinations provided by the invention, the combination of two kinds of effective ingredients, has expanded herbicidal spectrum, and a drug can solve weeds problem, has made up defect and limitation when single dose is used.
3, Herbicidal combinations provided by the invention, two kinds of effective ingredient mechanism of action are different, can overcome long-term single use and easily produce the shortcoming of resistance, extend the service life of medicament, to the comprehensive regulation important in inhibiting of Weed Resistance.
4, Herbicidal combinations provided by the invention, rapidly, the lasting period is long in drug effect performance, and use cost is low, easy to use, time saving and energy saving, and it applies huge economic benefit and social benefit.
Embodiment
Below in conjunction with embodiment, content of the present invention is described in further detail, in embodiment, mentioned content is not limitation of the invention, material prescription select can suit measures to local conditions and on result without substantial impact.In these embodiments, unless otherwise indicated, all percentage is all weight percentage.
Embodiment mono-: formulation screening test.
For further understanding thifensulfuronmethyl and the synergy of bromoxynil octanoate mixture to weeds, the inventor has carried out formulation screening test to thifensulfuronmethyl and bromoxynil octanoate mixture:
Test material:
Shepherd's purse [Capsella bursa-pastoris] (field collection seed).
Clearvers [Galium aparine L.Var.tenerum] (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% thifensulfuronmethyl, the former medicine of 95% bromoxynil octanoate, 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.Select representative susceptible weeds seed according to single dose herbicide spectrum, be cultured to 2 leaf 1 hearts for subsequent use.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, thifensulfuronmethyl and bromoxynil octanoate, between mixed ratio 1:20～20:1, have obvious synergy or summation action.The mixed ratio of thifensulfuronmethyl and bromoxynil octanoate is respectively in the time of 1:15 and 1:20, and obvious to the synergistic effect of shepherd's purse and clearvers, co-toxicity coefficient reaches respectively 153.63 and 139.14.
Table 1, different proportioning thifensulfuronmethyl and bromoxynil octanoate are measured the synergy of shepherd's purse.
Table 2, different proportioning thifensulfuronmethyl and bromoxynil octanoate are measured the synergy of clearvers.
Example of formulations one: (48% thifensulfuronmethyl bromoxynil octanoate 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 48% thifensulfuronmethyl bromoxynil octanoate wetting powder.
Example of formulations two (32% thifensulfuronmethyl bromoxynil octanoate 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% thifensulfuronmethyl bromoxynil octanoate and dispersibles oil-suspending agent.
Example of formulations three (48% thifensulfuronmethyl bromoxynil octanoate suspending agent).
Above-mentioned formula is pulverized in proportion in advance, then added in sand mill and grind, after high shear mixing, allotment makes 48% thifensulfuronmethyl bromoxynil octanoate suspending agent.
Example of formulations four (50% thifensulfuronmethyl bromoxynil octanoate water dispersible granules).
By above-mentioned formula, dry pulverization process, granulation, dry, screening make 50% thifensulfuronmethyl bromoxynil octanoate water-dispersible granules in proportion.
Field efficacy embodiment mono-: to the field control effectiveness test of winter wheat field annual broadleaf weed.
Reagent agent and dispenser dosage:
(1) 48% thifensulfuronmethyl bromoxynil octanoate wetting powder (3% thifensulfuronmethyl 45% decoyl bromobenzene
Nitrile), mu 26.9 grams, preparation (1#).
(2) 32% thifensulfuronmethyl bromoxynil octanoates dispersible oil-suspending agent (2% thifensulfuronmethyl 30% bromoxynil octanoate), mu 40.3 grams, preparation (2#).
(3) 48% thifensulfuronmethyl bromoxynil octanoate suspending agents (3% thifensulfuronmethyl 45% bromoxynil octanoate), mu 26.9 grams, preparation (3#).
(4) 50% thifensulfuronmethyl bromoxynil octanoate water dispersible granules (4% thifensulfuronmethyl 46% bromoxynil octanoate), mu 24.1 grams, preparation (4#).
(5) 15% thifensulfuronmethyl wetting powders, mu 1.9 grams, preparation (5#).
(6) 25% bromoxynil octanoate missible oil, mu 31.3 grams, preparation (6#).
Dispenser period: 3～4 leaf phases of weeds, be watered even spraying.
Prevent and kill off object: shepherd's purse, clearvers, acalypha copperleaf, Amaranthus retroflexus.
Result of the test is in table 3.As can be seen from the test results: after medicine 17 days, Herbicidal combinations of the present invention reached more than 87.1% the average preventive effect of winter wheat field annual broadleaf 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 winter wheat field annual broadleaf weed field control effectiveness test result.
Claims (3)
1. a Herbicidal combinations that contains thifensulfuronmethyl and bromoxynil octanoate, it is characterized in that: active ingredient is thifensulfuronmethyl and bromoxynil octanoate, the ratio of quality and the number of copies of thifensulfuronmethyl and bromoxynil octanoate is 1:20～20:1, and thifensulfuronmethyl and the bromoxynil octanoate gross mass mark percentage composition in composition is 3%～80%.
2. a kind of Herbicidal combinations that contains thifensulfuronmethyl and bromoxynil octanoate 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.
As requested a kind of Herbicidal combinations that contains thifensulfuronmethyl and bromoxynil octanoate described in 1 for preventing and kill off wheat paddock annual broadleaf weed.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410119386.8A CN103918689B (en) | 2014-03-27 | 2014-03-27 | A kind of containing thifensulfuronmethyl with the Herbicidal combinations of bromoxynil octanoate |
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|---|---|---|---|
| CN201410119386.8A CN103918689B (en) | 2014-03-27 | 2014-03-27 | A kind of containing thifensulfuronmethyl with the Herbicidal combinations of bromoxynil octanoate |
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| CN103918689A true CN103918689A (en) | 2014-07-16 |
| CN103918689B CN103918689B (en) | 2016-09-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105284852A (en) * | 2015-10-30 | 2016-02-03 | 泰安市农业科学研究院 | Triaziflam and thifensulfuron methyl-containing weeding missible oil |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101562978A (en) * | 2006-10-27 | 2009-10-21 | 先正达参股股份有限公司 | Herbicidal compositions |
| CN103493837A (en) * | 2013-09-12 | 2014-01-08 | 薛列驹 | Compound herbicide for paddy field |
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2014
- 2014-03-27 CN CN201410119386.8A patent/CN103918689B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101562978A (en) * | 2006-10-27 | 2009-10-21 | 先正达参股股份有限公司 | Herbicidal compositions |
| CN103493837A (en) * | 2013-09-12 | 2014-01-08 | 薛列驹 | Compound herbicide for paddy field |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105284852A (en) * | 2015-10-30 | 2016-02-03 | 泰安市农业科学研究院 | Triaziflam and thifensulfuron methyl-containing weeding missible oil |
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