CN104782643A - Pyrazosulfuron and pyribenzoxim containing paddy field weeding composition - Google Patents
Pyrazosulfuron and pyribenzoxim containing paddy field weeding composition Download PDFInfo
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- CN104782643A CN104782643A CN201510189235.4A CN201510189235A CN104782643A CN 104782643 A CN104782643 A CN 104782643A CN 201510189235 A CN201510189235 A CN 201510189235A CN 104782643 A CN104782643 A CN 104782643A
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- pyribenzoxim
- pyrazosulfuron
- piperazine pyrazosulfuron
- paddy field
- weeding composition
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Abstract
The invention discloses a pyrazosulfuron and pyribenzoxim containing paddy field weeding composition. The pyrazosulfuron and pyribenzoxim containing paddy field weeding composition contains pyrazosulfuron and pyribenzoxim in a weight ratio of (5: 1)-(1: 5). The weeding composition has a control effect significantly higher than that of a single component, reduces the using amount, reduces adverse effects of a pesticide on the ecological environment, has important significance in compressive control over weed resistance, and has great economic and social benefits.
Description
Technical field
The present invention relates to a kind of herbicide composition for paddy fields, is with piperazine pyrazosulfuron and pyribenzoxim for effective ingredient, for preventing and kill off paddy 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.Simultaneously, grass when weeds occur is mutually complicated, not only annual and perennial weed is mixed raw, draft, liana and shrub have concurrently, and weeds emerge uneven, seed, low age, the staggered generation of weeds at advanced age, so when weed killer herbicide kind is used alone, defect in a certain respect and limitation all can be shown.
Piperazine pyrazosulfuron, for belonging to sulfonylurea herbicide, is selectivity inner-adsorption conduction-type herbicide, is absorbed mainly through root system, and shift rapidly in weeds plant body, Developing restraint, weeds are dead gradually.Paddy rice can decompose this medicament, does not almost affect paddy growth.Efficacy stability, safety is high, 25 ~ 35 days lasting periods.Annual and perennial broadleaf weed and sedge weed can be prevented and kill off, as different in nature nutgrass flatsedge, Herba Cyperi Glomerati, firefly Lin, Monochoria vaginalis, Chinese celery, mexicana, angustifolia arrowhead herb, pondweed, blue or green duckweed, Eclipta prostrata, invalid to barnyard grass, moleplant seed.
Pyribenzoxim, for the agent of azoles quinoline ketone efficient paddy field weed-killer, can be absorbed by the root of plant, stem, leaf and be transmitted to the meristematic tissue on root and bud top, suppress its cell division, growth stops, metaplasia, make growing point, internode meristematic tissue downright bad, lobus cardiacus by green purpling look, base portion browning look and withered, thus play herbicide effect.Ba itianjing has the selectivity of height to weeds, to rice safety, and has good protection of the environment and ecological characteristic.Be applicable to paddy rice (transplant field, seedling throwing field, live field).Control grassy weed (barnyard grass, moleplant seed), nutgrass flatsedge material weeds (difformed galingale herb, needle spikesedge herb) and broad leaved weed (Monochoria vaginalis) etc.After rice direct seeding field seedling, after transplant field rice transplanting 0 ~ 10 day, after seedling throwing field rice transplanting 0 ~ 7 day, to 2.5 leaf phase dispensers before barnyard grass seedling, every mu of use 50% Ba itianjing wetting powder 13 ~ 26 grams (active ingredient 6.5 ~ 13 grams), pesticide-clay mixture method or spraying.When using pesticide-clay mixture method, need ensure that there is thin water layer in ground moistening and field, to ensure that medicament can evenly spread.
When piperazine pyrazosulfuron and the single use of pyribenzoxim, all there are certain defect and limitation.
The mixture of the present inventor to piperazine pyrazosulfuron and pyribenzoxim conducts in-depth research, on the basis of a large amount of formula indoor screening tests and field medicine effect test, find that piperazine pyrazosulfuron and pyribenzoxim carry out mixture, within the scope of certain mixed ratio, obvious synergistic effect is shown to paddy field weed, after further study, the present invention is completed.
Mixture and the application of piperazine pyrazosulfuron and pyribenzoxim there is no report at present.
Summary of the invention
Technical problem to be solved: the object of the invention is to solve above-mentioned weed killer herbicide is actual use in deficiency, provide a kind of efficient, low toxicity, low cost, quick-acting are good, and the lasting period is long, is conducive to the Herbicidal combinations of the weeds in paddy field comprehensive regulation.
Another object of the present invention is to provide this Herbicidal combinations to be applied to prevents and kill off paddy field annual weed.
Technical scheme: for achieving the above object, the invention provides a kind of Herbicidal combinations being effective ingredient with piperazine pyrazosulfuron and pyribenzoxim, and the ratio of weight and number of piperazine pyrazosulfuron and pyribenzoxim is 5:1 ~ 1:5.
Described Herbicidal combinations according to well known to a person skilled in the art method, can be mixed with the application forms of the applicable agricultural uses such as suspending agent, oil-suspending agent, aqueous emulsion, wetting powder, water dispersible granules.
Described Herbicidal combinations is also containing the agriculturally acceptable insecticides adjuvant of preparation needed for 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, can change to some extent according to different situations, be not particularly limited.
The production technology of the various application forms of described Herbicidal combinations all belongs to existing known technology, does not repeat them here.
Herbicidal combinations provided by the invention, is applied to and prevents and kill off paddy field annual weed.
Herbicidal combinations provided by the invention, usually adopts the method for directed spraying to use, also can adopt other operation techniques agriculturally applied as required.
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 effective ingredients, expands herbicidal spectrum, and a drug can solve various weed problem, compensate for defect when single dose uses and limitation.
3, Herbicidal combinations provided by the invention, two kinds of effective ingredient mechanism of action are different, can overcome the shortcoming that long-term single use easily produces resistance, extend the service life of medicament, to the comprehensive regulation important in inhibiting of Weed Resistance.
4, 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.
In these embodiments, unless otherwise indicated, all percentage is all weight percentage.
Example of formulations one (20% piperazine pyrazosulfuron pyribenzoxim wetting powder).
Mix entering in blender after above-mentioned formula in proportion coarse crushing, more namely obtain 20% piperazine pyrazosulfuron pyribenzoxim wetting powder after air-flow crushing.
Example of formulations two (18% piperazine pyrazosulfuron pyribenzoxim suspending agent).
Above-mentioned formula is pulverized in proportion in advance, then adds in sand mill and grind, the obtained 18% piperazine pyrazosulfuron pyribenzoxim suspending agent of allotment after high shear mixing.
Example of formulations three (30% piperazine pyrazosulfuron pyribenzoxim water dispersible granules).
By above-mentioned formula dry pulverization process, granulation, drying, the obtained 30% piperazine pyrazosulfuron pyribenzoxim water-dispersible granules of screening in proportion.
Example of formulations four: (12% piperazine pyrazosulfuron pyribenzoxim oil-suspending agent).
By above-mentioned formula Central Plains medicine, solvent, emulsifiers dissolve uniformly oil phase; Under high velocity agitation, the obtained 12% piperazine pyrazosulfuron pyribenzoxim oil-suspending agent of mixing.
Assays Example one: piperazine pyrazosulfuron and pyribenzoxim mixture measure the synergy of paddy field weed.
For understanding piperazine pyrazosulfuron and pyribenzoxim mixture further to the synergy of paddy field weed, the present inventor has carried out formula indoor screening test to piperazine pyrazosulfuron and pyribenzoxim mixture:
Test material: chickweed, barnyard grass.
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% piperazine pyrazosulfuron, purity is the former medicine of 96% pyribenzoxim, 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 1 leaf 1 heart for subsequent use.By select numbering the process of weeds cauline leaf after, to be placed in illumination box incubated at room temperature 5 days, to 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 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 (see table 1 and table 2), and piperazine pyrazosulfuron and pyribenzoxim, between mixed ratio 5:1 ~ 1:5, have obvious synergistic effect to ox chickweed, barnyard grass.
Table 1, different ratio piperazine pyrazosulfuron and pyribenzoxim are to the synergy measurement result of chickweed
| Active ingredient proportioning | EC 50(μg/ml) | ATI | TTI | Co-toxicity coefficient (CTC) |
| Piperazine pyrazosulfuron | 0.2572 | 100 | -- | -- |
| Pyribenzoxim | 7.3786 | 3.49 | -- | -- |
| Piperazine pyrazosulfuron: pyribenzoxim (5:1) | 0.25 | 102.88 | 83.91 | 122.60 |
| Piperazine pyrazosulfuron: pyribenzoxim (3:2) | 0.33 | 77.94 | 61.39 | 126.95 |
| Piperazine pyrazosulfuron: pyribenzoxim (2:1) | 0.28 | 91.86 | 67.82 | 135.43 |
| Piperazine pyrazosulfuron: pyribenzoxim (1:1) | 0.41 | 62.73 | 51.74 | 121.24 |
| Piperazine pyrazosulfuron: pyribenzoxim (1:2) | 0.55 | 46.76 | 35.65 | 131.15 |
| Piperazine pyrazosulfuron: pyribenzoxim (2:3) | 0.49 | 52.49 | 42.09 | 124.70 |
| Piperazine pyrazosulfuron: pyribenzoxim (1:5) | 0.99 | 25.98 | 19.57 | 132.74 |
Table 2, different ratio piperazine pyrazosulfuron and pyribenzoxim are to the synergy measurement result of barnyard grass
| Active ingredient proportioning | EC 50(μg/ml) | ATI | TTI | Co-toxicity coefficient |
| Piperazine pyrazosulfuron | 2.6578 | 100 | -- | -- |
| Pyribenzoxim | 0.7157 | 371.36 | -- | -- |
| Piperazine pyrazosulfuron: pyribenzoxim (5:1) | 1.51 | 176.01 | 145.22 | 121.20 |
| Piperazine pyrazosulfuron: pyribenzoxim (3:2) | 1.01 | 263.15 | 208.54 | 126.18 |
| Piperazine pyrazosulfuron: pyribenzoxim (2:1) | 1.15 | 231.11 | 190.45 | 121.35 |
| Piperazine pyrazosulfuron: pyribenzoxim (1:1) | 0.83 | 320.22 | 235.67 | 135.87 |
| Piperazine pyrazosulfuron: pyribenzoxim (1:2) | 0.77 | 345.17 | 280.90 | 122.88 |
| Piperazine pyrazosulfuron: pyribenzoxim (2:3) | 0.73 | 364.08 | 262.81 | 138.53 |
| Piperazine pyrazosulfuron: pyribenzoxim (1:5) | 0.62 | 428.68 | 326.13 | 131.44 |
Assays Example two: piperazine pyrazosulfuron and pyribenzoxim mixture composition for preventing and controlling direct seading rice field weed field control effectiveness test.
Reagent agent and dispenser dosage:
(1) 12% piperazine pyrazosulfuron pyribenzoxim oil-suspending agent (6% piperazine pyrazosulfuron: 6% pyribenzoxim), mu 30 grams, preparation (1#).
(2) 18% piperazine pyrazosulfuron pyribenzoxim suspending agents (9% piperazine pyrazosulfuron: 9% pyribenzoxim), mu 20 grams, preparation (2#).
Contrast medicament and dispenser dosage:
(1) 2.5% piperazine pyrazosulfuron oil-suspending agent, mu 100 grams, preparation (3#).
(2) 10% pyribenzoxim missible oil, mu 20 grams, preparation (4#).
Dispenser period: the weeds 2-3 leaf phase, be watered even spraying.
Result of the test: in table 3, as can be seen from the test results: after dispenser 15 days, Herbicidal combinations of the present invention to total preventive effect of direct seading rice annual weed all more than 88.9%; After dispenser 30 days, total preventive effect was all more than 98.2%, and significantly better than the single dose of contrast, synergistic effect is remarkable, and expands herbicidal spectrum, and quick-acting and lasting period are obviously better than single dose.
Table 3, control direct seading rice field annual weed field control effectiveness test result
Claims (4)
1. contain a Herbicidal composition for rice field for piperazine pyrazosulfuron and pyribenzoxim, it is characterized in that comprising two kinds of effective ingredients: piperazine pyrazosulfuron and pyribenzoxim.
2. a kind of Herbicidal composition for rice field containing piperazine pyrazosulfuron and pyribenzoxim according to claim 1, is characterized in that: the ratio of weight and number of piperazine pyrazosulfuron and pyribenzoxim is 5:1 ~ 1:5.
3. a kind of Herbicidal composition for rice field containing piperazine pyrazosulfuron and pyribenzoxim according to claim 1 and 2, is characterized in that: the formulation of described Herbicidal combinations is the one in wetting powder, water dispersible granules, oil-suspending agent, suspending agent.
4. a kind of Herbicidal composition for rice field containing piperazine pyrazosulfuron and pyribenzoxim according to claim 1 and 2 is preventing and kill off the application in paddy field annual weed.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108235990A (en) * | 2016-12-27 | 2018-07-03 | 江苏龙灯化学有限公司 | A kind of Herbicidal combinations and its application |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1725952A (en) * | 2002-11-21 | 2006-01-25 | 辛根塔参与股份公司 | Herbicidal composition |
| CN101291584A (en) * | 2005-10-18 | 2008-10-22 | 日产化学工业株式会社 | Herbicide composition |
| JP2008273949A (en) * | 2007-03-30 | 2008-11-13 | Nissan Chem Ind Ltd | Herbicide composition |
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2015
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1725952A (en) * | 2002-11-21 | 2006-01-25 | 辛根塔参与股份公司 | Herbicidal composition |
| CN101291584A (en) * | 2005-10-18 | 2008-10-22 | 日产化学工业株式会社 | Herbicide composition |
| JP2008273949A (en) * | 2007-03-30 | 2008-11-13 | Nissan Chem Ind Ltd | Herbicide composition |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108235990A (en) * | 2016-12-27 | 2018-07-03 | 江苏龙灯化学有限公司 | A kind of Herbicidal combinations and its application |
| CN114027312A (en) * | 2016-12-27 | 2022-02-11 | 江苏龙灯化学有限公司 | Weeding composition for preventing and treating gramineous weeds |
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