CN103688941A - Herbicidal composition containing pyraflufen-ethyl and dicamba - Google Patents
Herbicidal composition containing pyraflufen-ethyl and dicamba Download PDFInfo
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- CN103688941A CN103688941A CN201310629325.1A CN201310629325A CN103688941A CN 103688941 A CN103688941 A CN 103688941A CN 201310629325 A CN201310629325 A CN 201310629325A CN 103688941 A CN103688941 A CN 103688941A
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- dicamba
- grass ether
- ethyl
- pyrrole grass
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Abstract
The invention discloses a herbicidal composition containing pyraflufen-ethyl and dicamba. The herbicidal composition contains the following active ingredients: pyraflufen-ethyl and dicamba and the balance of pesticide auxiliaries. The mass ratio of the pyraflufen-ethyl to the dicamba ranges from 1:1 to 1:15, and the total mass of the pyraflufen-ethyl and the dicamba accounts for 2-80% of the mass percentage of the herbicidal composition. According to actual requirement, the herbicidal composition disclosed by the invention can be prepared into one of a dispersible oil suspending agent, a suspending agent, wettable powder and water dispersible granules and is better in the effect for preventing and killing annual weeds in wheat paddocks as comparison with single pyraflufen-ethyl or dicamba and is capable of reducing the dosage of a pesticide, reducing the adverse effects of the pesticide to the ecological environment and effectively solving the problem of weed resistance to the pesticide.
Description
Technical field
The present invention relates to a kind of Herbicidal combinations, is that to take pyrrole grass ether and dicamba be active ingredient, for preventing and kill off wheat paddock annual broadleaf weed.
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 is mixed, have herbicidal spectrum wide, promote actual effect, delay herbicide resistance, time and labour saving advantage.
The phenylpyrazole class herbicide after seedling that pyrrole grass ether is tagging property, its mechanism of action is the proporphyrinogen oxidase suppressing in plant corpus, and utilize wheat and the metabolite of weeds to the different activities that difference produces of medicine absorption and deposition, reach the effect of optionally preventing and treating wheatland broad leaved weed.
It is weed killer herbicide that dicamba belongs to benzoic acid; there is interior suction conduction; after medication, medicament can be very soon by the leaf of weeds, stem, root absorption; by phloem, conduct up and down; focus mostly at meristematic tissue and the vigorous position of metabolic activity, hinder the normal activity of plant hormone, thereby make its death; with latter general 24 hours broad leaved weeds, both there will be lopsided curling symptom, 15-20 days dead.
Variety classes weed killer herbicide is mixed, 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 pyrrole grass ether and dicamba, find that pyrrole grass ether and dicamba are mixed, 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 Herbicidal combinations of the farmland weed comprehensive regulation.
Another object of the present invention is for preventing and kill off wheat paddock annual broadleaf weed by this Herbicidal combinations.
Technical scheme: for achieving the above object, the invention provides a kind of Herbicidal combinations that contains pyrrole grass ether and dicamba, active ingredient is pyrrole grass ether and dicamba, the mass ratio of pyrrole grass ether and dicamba is 1:1～1:15, pyrrole grass ether and the gross mass mark percentage composition of dicamba in Herbicidal combinations are 2%～80%, and surplus is the upper spendable insecticides adjuvant of agricultural.
The auxiliary element using in Herbicidal combinations of the present invention comprises that solvent, emulsifier, wetting agent, stabilizing agent, dispersant, bleeding agent, thickener, defoamer, antifreezing agent, disintegrant, binding agent, filler, carrier, medium, surfactant etc. are of value to active ingredient and in preparation, stablize and bring into play the known substance of drug effect, be all various compositions conventional in pesticidal preparations or that allow to use, concrete composition and consumption require to determine by test according to formula.
Described Herbicidal combinations, is prepared into and is dispersibled a kind of of oil-suspending agent, suspending agent, wetting powder, water dispersible granules by pesticide production technology.The production technology of various application forms all belongs to existing known technology, does not repeat them here.
Herbicidal combinations provided by the invention, should be used in 3～4 leaf phases of wheat paddock annual broadleaf weed in use.
Herbicidal combinations provided by the invention, adopts cauline leaf spray method to use, and 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 synergy or summation action, the control efficiency of composition is significantly improved than single dose, reduced the using dosage of agricultural chemicals, reduced medication number of times, reduce drug cost, reduced the adverse effect of agricultural chemicals to ecotope.
2, Herbicidal combinations provided by the invention, two kinds of active ingredient mechanism of action are different, can overcome the shortcoming that long-term single use easily produces resistance, extend the service life of medicament, the comprehensive regulation important in inhibiting to Weed Resistance.
3, Herbicidal combinations provided by the invention, use cost is low, easy to use, time saving and energy saving, and it applies huge economic benefit and social benefit.
Embodiment
The present invention describes by following specific embodiment, but the invention is not restricted to following specific embodiment.In embodiment, each component percentage composition is weight percentage.
Embodiment mono-: pyrrole grass ether and dicamba formulation screening test.
The synergy being mixed to weeds for further understanding pyrrole grass ether and dicamba, the inventor is mixed and has carried out formulation screening test pyrrole grass ether and dicamba:
Test material:
Clearvers [Galium aparine L.var.tenerum] (field is collected seed and preserved).
Ox chickweed [Malachium aquaticum(L.) Fries.] (field is collected seed and is preserved).
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% pyrrole grass ether, the former medicine of 90% dicamba, 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 the object that is mixed, 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 (TTI) of mixture actual measurement toxicity index (ATI)/mixture] * 100
Measurement result shows, pyrrole grass ether and dicamba, between mixed ratio 1:1～15, have obvious synergy or summation action.The mixed ratio of dicamba and pyrrole grass ether is when 1:15, and obvious to the preventive effect synergistic effect of clearvers and ox chickweed, co-toxicity coefficient reaches respectively 141.58 and 147.32.
Table 1, different proportioning pyrrole grass ether and dicamba are measured the synergy of clearvers.
Table 2, different proportioning pyrrole grass ether and dicamba are measured the synergy of ox chickweed.
Embodiment bis-: (32% pyrrole grass ether dicamba 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 32% pyrrole grass ether dicamba wetting powder.
Embodiment tri-: (52% pyrrole grass ether dicamba 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 52% pyrrole grass ether dicamba and dispersibles oil-suspending agent.
Embodiment tetra-: (30% pyrrole grass ether dicamba suspending agent)
Above-mentioned formula is pulverized in proportion in advance, then added in sand mill and grind, after high shear mixing, allotment makes 30% pyrrole grass ether dicamba suspending agent.
Embodiment five: (48% pyrrole grass ether dicamba water dispersible granules)
By above-mentioned formula, dry pulverization process, granulation, dry, screening make 48% pyrrole grass ether dicamba water-dispersible granules in proportion.
Embodiment six: the test of pesticide effectiveness of preventing and kill off wheat paddock annual broadleaf weed.
Reagent agent and dispenser dosage:
(1) 32% pyrrole grass ether dicamba wetting powder (2% pyrrole grass ether 30% dicamba), 7.7 grams, preparation (1#) for mu.
(2) 52% pyrrole grass ether dicambas dispersible oil-suspending agent (4% pyrrole grass ether 48% dicamba), 12.6 grams, preparation (2#) for mu.
(3) 30% pyrrole grass ether dicamba suspending agents (3% pyrrole grass ether 27% dicamba), 20 grams, preparation (3#) for mu.
(4) 48% pyrrole grass ether dicamba water dispersible granules (3% pyrrole grass ether 45% dicamba), 12.3 grams, preparation (4#) for mu.
(5) 2% pyrrole grass ether suspending agents, 0.8 gram, preparation (5#) for mu.
(6) 48% dicamba aqueous solutions, 11 grams, preparation (6#) for mu.
(7) clear water contrast.
Dispenser period: 3～4 leaf phases of weeds, be watered rear cauline leaf spraying.
Prevent and kill off object: clearvers, ox chickweed, kitchen garden, wartwort.
Result of the test is in Table 3.From table 3 result of the test, can find out: medicine 15 days, Herbicidal combinations of the present invention reached more than 92.2% the average preventive effect of wheat paddock annual broadleaf weed.Herbicidal combinations of the present invention is significantly better than single dose, and synergistic effect is remarkable, and quick-acting and lasting period are obviously better than single dose.
Table 3, control wheat paddock annual broadleaf weed field control effectiveness test result (after medicine 15 days).
Claims (3)
1. a Herbicidal combinations that contains pyrrole grass ether and dicamba, it is characterized in that: active ingredient is pyrrole grass ether and dicamba, the mass ratio of pyrrole grass ether and dicamba is 1:1～1:15, and pyrrole grass ether and the gross mass mark percentage composition of dicamba in Herbicidal combinations are 2%～80%.
2. a kind of Herbicidal combinations that contains pyrrole grass ether and dicamba according to claim 1, is characterized in that: described Herbicidal combinations is prepared into and dispersibles a kind of in oil-suspending agent, suspending agent, wetting powder, water dispersible granules when reality is used.
3. the Herbicidal combinations that a kind of described in 1 contained pyrrole grass ether and dicamba as requested, is characterized in that: be applicable to prevent and kill off wheat paddock annual broadleaf weed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310629325.1A CN103688941B (en) | 2013-11-28 | 2013-11-28 | A kind of containing pyraflufen-ethyl with the Herbicidal combinations of Mediben |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310629325.1A CN103688941B (en) | 2013-11-28 | 2013-11-28 | A kind of containing pyraflufen-ethyl with the Herbicidal combinations of Mediben |
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| Publication Number | Publication Date |
|---|---|
| CN103688941A true CN103688941A (en) | 2014-04-02 |
| CN103688941B CN103688941B (en) | 2017-01-04 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1390450A (en) * | 2002-07-26 | 2003-01-15 | 赵德友 | Herbicidal mixture of dicamba and sulcotrione |
| CN1390456A (en) * | 2002-07-26 | 2003-01-15 | 李美 | Herbcidal mixture of dicamba and nicosulfuron |
| EP1661459A2 (en) * | 2000-08-31 | 2006-05-31 | Basf Aktiengesellschaft | Herbicidal mixtures |
| CN102204545A (en) * | 2011-06-09 | 2011-10-05 | 陕西韦尔奇作物保护有限公司 | Weeding composite containing carfentrazone-ethyl and pyraflufen-ethyl |
| CN102428943A (en) * | 2011-11-24 | 2012-05-02 | 陕西美邦农药有限公司 | Weed killing composition containing pyraflufen ethyl and sulfonylurea compounds |
-
2013
- 2013-11-28 CN CN201310629325.1A patent/CN103688941B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1661459A2 (en) * | 2000-08-31 | 2006-05-31 | Basf Aktiengesellschaft | Herbicidal mixtures |
| CN1390450A (en) * | 2002-07-26 | 2003-01-15 | 赵德友 | Herbicidal mixture of dicamba and sulcotrione |
| CN1390456A (en) * | 2002-07-26 | 2003-01-15 | 李美 | Herbcidal mixture of dicamba and nicosulfuron |
| CN102204545A (en) * | 2011-06-09 | 2011-10-05 | 陕西韦尔奇作物保护有限公司 | Weeding composite containing carfentrazone-ethyl and pyraflufen-ethyl |
| CN102428943A (en) * | 2011-11-24 | 2012-05-02 | 陕西美邦农药有限公司 | Weed killing composition containing pyraflufen ethyl and sulfonylurea compounds |
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| CN103688941B (en) | 2017-01-04 |
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