CN103636650A - Weeding composition containing fentrazamide and halosulfuron-methyl - Google Patents
Weeding composition containing fentrazamide and halosulfuron-methyl Download PDFInfo
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- CN103636650A CN103636650A CN201310530798.6A CN201310530798A CN103636650A CN 103636650 A CN103636650 A CN 103636650A CN 201310530798 A CN201310530798 A CN 201310530798A CN 103636650 A CN103636650 A CN 103636650A
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- fentrazamide
- halosulfuronmethyl
- halosulfuron
- methyl
- weeding composition
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Abstract
The invention discloses a weeding composition containing fentrazamide and halosulfuron-methyl. The weeding composition comprises a common assistant, fentrazamide and halosulfuron-methyl. A mass part ratio of fentrazamide to halosulfuron-methyl is in a range of 10: 1 to 1: 10 and preferably, the mass part ratio is 3: 1. Through compounding, fentrazamide and halosulfuron-methyl produce obvious synergism, and a use amount of the effective components of the weeding composition is obviously less than that of the single fentrazamide or halosulfuron-methyl. The weeding composition is suitable for preventing and removing annual weeds in the paddy dry-raising field. In a sowing earlier stage, when annual weeds do not sprout, the weeding composition is applied by spraying and herbicide-soil mixture spreading.
Description
Technical field
A kind of Herbicidal combinations the present invention relates to is that to take fentrazamide and halosulfuronmethyl be active ingredient, for preventing and kill off arid rice nursery annual 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.Simultaneously, grass when weeds occur is complicated mutually, not only annual and perennial weed is mixed raw, draft, liana and shrub have concurrently, and weeds emerge uneven, seed, the staggered generation of low age, advanced age weeds, so when weed killer herbicide kind is used separately, all can show defect and limitation in a certain respect.
Fentrazamide belongs to oxime ester compound, wide spectrum selective post-emergence herbicide.Mechanism of action is similar to sulfonylurea and imidazolone weed killer herbicide, all belongs to acetolactate synthestase (ALS) inhibitor.Paddy rice, common wheat, Korea lawn grass are had to activity of weeding after selectivity super-high-efficient bud, without activity of weeding before bud, distinguished for preventing and kill off the various grassy weeds such as barnyard grass, large fringe amur foxtail, polygonum flaccidum and the assorted effect of drawing of broad-leaved, to paddy rice, common wheat safety.Chemical weeding speed is slower, after dispenser, can suppress weed growth, but must be withered after 2 weeks.Medicament medication appropriateness is wider, all effective to 1.5～6.5 leaf phases of barnyard grass.
Halosulfuronmethyl is the same with other sulfonylurea herbicides is a kind of inhibitor of acetolactate synthestase, by weeds root and leaf, absorbs, and in plant corpus, conducts, and weeds stop growing, then withered.Be mainly used in preventing and kill off broad leaved weed and sedge weed, as piemarker, storehouse ear, datura, artemisiifolia, Amaranthus retroflexus, flowerofanhour root or herb, knotweed, kitchen garden, black nightshade, Cassia tora, lead a cow, the rhizome of nutgrass flatsedge etc.Suitable crop is as wheat and corn, paddy rice, sugarcane, lawn etc., before seedling and Miao Houjun can use.Because its rapid metabolism in crop is harmless object, therefore to crop safety.
During the single use of fentrazamide and halosulfuronmethyl, all there are certain defect and limitation.
The inventor conducts in-depth research being mixed of fentrazamide and halosulfuronmethyl, on the basis of a large amount of formula indoor screening tests and field medicine effect test, find that fentrazamide and halosulfuronmethyl are mixed, within the scope of certain mixed ratio, paddy field weed is shown to obvious synergistic effect, after further study, completed the present invention.
Being mixed and applying of fentrazamide and halosulfuronmethyl there is no report at present.
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 paddy field weed comprehensive regulation.Another object of the present invention is to provide this Herbicidal combinations is applied to prevent and kill off arid rice nursery annual weed.
Technical scheme: for achieving the above object, the invention provides a kind of Herbicidal combinations that fentrazamide and halosulfuronmethyl be active ingredient of take, the ratio of weight and number of fentrazamide and halosulfuronmethyl is 10:1～1:10, and better ratio is 3:1.
Described Herbicidal combinations can, according to well known to a person skilled in the art method, be mixed with the application forms of the applicable agricultural uses such as oil-suspending agent, wetting powder, water dispersible granules.
Described Herbicidal combinations also contains acceptable insecticides adjuvant in the required agricultural of preparation pesticidal preparations, be selected from one or more in solvent, emulsifier, wetting agent, stabilizing agent, dispersant, bleeding agent, thickener, defoamer, antifreezing agent, disintegrant, binding agent, filler, carrier, medium, surfactant, be known substance, various auxiliary agents conventional in pesticidal preparations, according to different situations, can change to some extent, be not particularly limited.
The production technology of the described various application forms of Herbicidal combinations all belongs to existing known technology, does not repeat them here.
Herbicidal combinations provided by the invention, is applied to prevent and kill off arid rice nursery annual weed.
Herbicidal combinations provided by the invention, adopts the method for directed spraying to use conventionally, also can adopt as required other operation techniques of the upper application of agricultural.
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 condition and crop state variation, can be by using suitable formulation to reach the object of control.
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, 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, the combination of two kinds of active ingredients, has expanded herbicidal spectrum, and a drug can solve various weeds problems, has made up defect and limitation when single dose is used.
3, 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.
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
In order to make object of the present invention, technical scheme and advantage more short and sweet, the present invention describes with following specific embodiment, but the present invention only limits 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 modifications of making within the spirit and principles in the present invention, be equal to replacement and improvement etc., within all should being included in protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Biologicall test embodiment mono-: fentrazamide and cyhalofop-butyl are mixed the synergy of paddy field weed is measured.
Test material: Commeline communis [Stellaria media (L.) Cyrillus] (field is collected seed and preserved).Barnyard grass [Echinochloa crusgalli (L.) Beaw Setaria] (field is collected seed and 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 former medicine of 96% fentrazamide that first takes certain mass, the former medicine of 95% halosulfuronmethyl, adds acetone fully to dissolve the Tween 80 aqueous solution dilution of rear use 0.1%, is mixed with respectively single dose mother liquor, according to the object that is mixed, serial proportioning is set, each proportioning arranges 5～7 concentration gradients.According to single dose herbicide spectrum, select representative susceptible weeds seed standby.To select the processing of numbering to carry out after soil treatment, be placed in illumination box incubated at room temperature 10 days, calculate control efficiency (fresh weight), 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, fentrazamide and halosulfuronmethyl are between proportioning 10:1～1:10, paddy field barnyard grass is had and mutually supplements preventive effect and synergistic function CTC with 3:1 the best, paddy field Commeline communis is also shown to excellent synergistic effect co-toxicity coefficient (CTC) and be up to 133.7.
Table 1, different proportioning fentrazamide and halosulfuronmethyl are measured the synergy of barnyard grass.
Table 2, different proportioning fentrazamide and halosulfuronmethyl are measured the synergy of dayflower.
FORMULATION EXAMPLE one:
Above-mentioned formula is entered in blender after coarse crushing and mixed in proportion, then after air-flow crushing, make 32% fentrazamide halosulfuronmethyl wetting powder.
This embodiment is used for preventing and kill off arid rice nursery annual weed, 32% fentrazamide halosulfuronmethyl wetting powder consumption 450g a.i./ha soil treatment, and after medicine, 10 days preventive effects are 92.8%; 30% fentrazamide wetting powder consumption 360g a.i./ha soil treatment, after medicine, 10 days preventive effects are 77.2%; 15% halosulfuronmethyl missible oil consumption 45g a.i./ha soil treatment, after medicine 10 days 73.6%.The composite rear synergy of fentrazamide and halosulfuronmethyl is obvious, and 32% fentrazamide halosulfuronmethyl wetting powder is prevented and kill off arid rice nursery annual weed drug effect and is obviously better than 3% fentrazamide wetting powder and 15% halosulfuronmethyl missible oil.Because pharmacy control efficacy improves, compound drug effective ingredient consumption reduces, and has reduced drug cost, delays the generation of disease drug resistance, has reduced environmental pollution.
FORMULATION EXAMPLE two:
By above-mentioned formula, dry pulverization process, granulation, dry, screening make 80% fentrazamide halosulfuronmethyl water-dispersible granules in proportion.
This embodiment is used for preventing and kill off arid rice nursery annual weed, 80% fentrazamide halosulfuronmethyl water-dispersible granules consumption 450g a.i./ha soil treatment, and after medicine, 10 days preventive effects are 96.3%; 50% fentrazamide wetting powder consumption 360g a.i./ha soil treatment, after medicine, 10 days preventive effects are 68.3%; 15% halosulfuronmethyl missible oil consumption 45g a.i./ha soil treatment, after medicine 10 days 86.3%.The composite rear synergy of fentrazamide and halosulfuronmethyl is obvious, and 80% fentrazamide halosulfuronmethyl water-dispersible granules is prevented and kill off arid rice nursery annual weed drug effect and is obviously better than 5% fentrazamide wetting powder and 15% halosulfuronmethyl missible oil.Because pharmacy control efficacy improves, compound drug effective ingredient consumption reduces, and has expanded herbicide spectrum, has reduced drug cost, delays the generation of disease drug resistance, has reduced environmental pollution.
FORMULATION EXAMPLE three:
Above-mentioned formula Central Plains medicine, solvent, emulsifiers dissolve are become to even oil phase; Under high-speed stirred, mix and make 20% fentrazamide halosulfuronmethyl oil-suspending agent.
This embodiment is used for preventing and kill off arid rice nursery annual weed, 20% fentrazamide halosulfuronmethyl oil-suspending agent consumption 450g a.i./ha soil treatment, and after medicine, 10 days preventive effects are 97.8%; 50% fentrazamide wetting powder consumption 360g a.i./ha soil treatment, after medicine, 10 days preventive effects are 76.1%; 10% halosulfuronmethyl missible oil consumption 45g a.i./ha soil treatment, after medicine 10 days 78.2%.The composite rear synergy of fentrazamide and halosulfuronmethyl is obvious, and 20% fentrazamide halosulfuronmethyl oil-suspending agent is prevented and kill off arid rice nursery annual weed drug effect and is obviously better than 5% fentrazamide wetting powder and 10% halosulfuronmethyl missible oil.Because pharmacy control efficacy improves, compound drug effective ingredient consumption reduces, and has expanded herbicide spectrum, has reduced drug cost, delays the generation of disease drug resistance, has reduced environmental pollution.
Claims (4)
1. a Herbicidal combinations that contains fentrazamide and halosulfuronmethyl, is characterized in that: active ingredient is fentrazamide and halosulfuronmethyl, and the ratio of weight and number of fentrazamide and halosulfuronmethyl is 10:1～1:10.
2. a kind of Herbicidal combinations that contains fentrazamide and halosulfuronmethyl according to claim 1, is characterized in that: the ratio of weight and number of fentrazamide and halosulfuronmethyl is 3:1.
3. a kind of Herbicidal combinations that contains fentrazamide and halosulfuronmethyl according to claim 1, is characterized in that: the formulation of described Herbicidal combinations can be a kind of in oil-suspending agent, wetting powder or water dispersible granules.
4. a kind of Herbicidal combinations that contains fentrazamide and halosulfuronmethyl according to claim 1 and 2, is characterized in that: for preventing and kill off arid rice nursery annual weed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310530798.6A CN103636650A (en) | 2013-10-30 | 2013-10-30 | Weeding composition containing fentrazamide and halosulfuron-methyl |
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|---|---|---|---|
| CN201310530798.6A CN103636650A (en) | 2013-10-30 | 2013-10-30 | Weeding composition containing fentrazamide and halosulfuron-methyl |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106689170A (en) * | 2015-11-16 | 2017-05-24 | 江苏龙灯化学有限公司 | Weeding composition |
| CN106689168A (en) * | 2015-11-16 | 2017-05-24 | 江苏龙灯化学有限公司 | Weeding composition |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1575128A (en) * | 2001-08-30 | 2005-02-02 | 拜尔农作物科学股份公司 | Selective herbicide comprising a tetrazolinone derivative |
-
2013
- 2013-10-30 CN CN201310530798.6A patent/CN103636650A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1575128A (en) * | 2001-08-30 | 2005-02-02 | 拜尔农作物科学股份公司 | Selective herbicide comprising a tetrazolinone derivative |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106689170A (en) * | 2015-11-16 | 2017-05-24 | 江苏龙灯化学有限公司 | Weeding composition |
| CN106689168A (en) * | 2015-11-16 | 2017-05-24 | 江苏龙灯化学有限公司 | Weeding composition |
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Application publication date: 20140319 |
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