CN104814024A - Rice field herbicide composition containing metazosulfuron and penoxsulam - Google Patents
Rice field herbicide composition containing metazosulfuron and penoxsulam Download PDFInfo
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- CN104814024A CN104814024A CN201510189261.7A CN201510189261A CN104814024A CN 104814024 A CN104814024 A CN 104814024A CN 201510189261 A CN201510189261 A CN 201510189261A CN 104814024 A CN104814024 A CN 104814024A
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- penoxsuam
- penoxsulam
- metazosulfuron
- piperazine pyrazosulfuron
- rice field
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Abstract
The invention discloses a rice field herbicide composition containing metazosulfuron and penoxsulam. The rice field herbicide composition containing the metazosulfuron and the penoxsulam is composed of effective components of the metazosulfuron and the penoxsulam, and herbicide adjuvants as balance, wherein the weight part ratio of the metazosulfuron and the penoxsulam is 5:1-1:5. According to practical application requirements. The rice field herbicide composition containing the metazosulfuron and the penoxsulam can be prepared into the dosage forms such as wettable powder, water dispersant, suspension and oil suspension through herbicide production processes for preventing annual weeds in rice fields. The rice field herbicide composition containing the metazosulfuron and the penoxsulam can obviously improve the preventing effects compared with single dosage and reduce consumption of the herbicide as well as adverse effects of the herbicide on the ecological environment, thereby being significant to comprehensive treatment of resistance of weeds and obtaining enormous economic effects and social effects.
Description
Technical field
The present invention relates to a kind of herbicide for paddy field, is with piperazine pyrazosulfuron and penoxsuam 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; 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; Paddy rice can decompose this medicament, does not almost affect paddy growth.。
Penoxsuam, 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; Be applicable to paddy rice (transplant field, seedling throwing field, live field) 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.; Weeds are had to the selectivity of height, to rice safety, and have good protection of the environment and ecological characteristic.
When piperazine pyrazosulfuron and the single use of penoxsuam, all there are certain defect and limitation.
The mixture of the present inventor to piperazine pyrazosulfuron and penoxsuam 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 penoxsuam 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 penoxsuam 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 paddy field weed 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 penoxsuam, and the ratio of weight and number of piperazine pyrazosulfuron and penoxsuam 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 embodiments.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: 15% piperazine pyrazosulfuron penoxsuam wetting powder)
Mix entering in blender after above-mentioned formula in proportion coarse crushing, more namely obtain 15% piperazine pyrazosulfuron penoxsuam wetting powder after air-flow crushing.
Example of formulations two: 15% piperazine pyrazosulfuron penoxsuam suspending agent)
Above-mentioned formula is pulverized in proportion in advance, then adds in sand mill and grind, the obtained 15% piperazine pyrazosulfuron penoxsuam suspending agent of allotment after high shear mixing.
Example of formulations three: 15% piperazine pyrazosulfuron penoxsuam water dispersible granules
By above-mentioned formula dry pulverization process, granulation, drying, the obtained 15% piperazine pyrazosulfuron penoxsuam water-dispersible granules of screening in proportion.
Example of formulations four: 12% piperazine pyrazosulfuron penoxsuam 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 penoxsuam oil-suspending agent of mixing.
Assays Example one: piperazine pyrazosulfuron and penoxsuam mixture measure the synergy of paddy field weed.
For understanding piperazine pyrazosulfuron and penoxsuam mixture further to the synergy of paddy field weed, the present inventor has carried out formula indoor screening test to piperazine pyrazosulfuron and penoxsuam mixture:
Test material:
Chickweed [Stellaria media (L.) Cyrillus] (field collection Seed storage).
Barnyard grass [Echinochloa crusgalli (L.) Beaw Setaria] (field collection Seed storage).
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% penoxsuam, 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 EC50/ reagent agent EC50) × 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 penoxsuam, between mixed ratio 5:1 ~ 1:5, have obvious synergistic effect to nutgrass flatsedge, barnyard grass.
Table 1, different ratio piperazine pyrazosulfuron and penoxsuam are to the synergy measurement result of nutgrass flatsedge
| Active ingredient proportioning | EC 50(μg/ml) | ATI | TTI | Co-toxicity coefficient (CTC) |
| Piperazine pyrazosulfuron | 0.2510 | 100 | -- | -- |
| Penoxsuam | 6.1753 | 4.06 | -- | -- |
| Piperazine pyrazosulfuron: penoxsuam (5:1) | 0.23 | 109.13 | 84.01 | 129.90 |
| Piperazine pyrazosulfuron: penoxsuam (3:2) | 0.32 | 78.44 | 61.62 | 127.28 |
| Piperazine pyrazosulfuron: penoxsuam (2:1) | 0.31 | 80.97 | 68.02 | 129.03 |
| Piperazine pyrazosulfuron: penoxsuam (1:1) | 0.38 | 66.05 | 52.03 | 126.95 |
| Piperazine pyrazosulfuron: penoxsuam (1:2) | 0.61 | 41.15 | 36.04 | 124.16 |
| Piperazine pyrazosulfuron: penoxsuam (2:3) | 0.51 | 49.22 | 42.43 | 125.97 |
| Piperazine pyrazosulfuron: penoxsuam (1:5) | 1.12 | 22.41 | 20.05 | 121.75 |
Table 2, different ratio piperazine pyrazosulfuron and penoxsuam are to the synergy measurement result of barnyard grass
| Active ingredient proportioning | EC 50(g/ml) | ATI | TTI | Co-toxicity coefficient |
| Piperazine pyrazosulfuron | 1.9652 | 100 | - | - |
| Penoxsuam | 0.6752 | 291.05 | - | - |
| Piperazine pyrazosulfuron: penoxsuam (5:1) | 1.05 | 187.16 | 131.84 | 141.96 |
| Piperazine pyrazosulfuron: penoxsuam (3:2) | 0.92 | 213.61 | 176.42 | 121.08 |
| Piperazine pyrazosulfuron: penoxsuam (2:1) | 0.81 | 242.62 | 163.68 | 148.22 |
| Piperazine pyrazosulfuron: penoxsuam (1:1) | 0.68 | 289.00 | 195.52 | 147.81 |
| Piperazine pyrazosulfuron: penoxsuam (1:2) | 0.66 | 297.76 | 227.36 | 130.96 |
| Piperazine pyrazosulfuron: penoxsuam (2:3) | 0.72 | 272.94 | 214.63 | 127.17 |
| Piperazine pyrazosulfuron: penoxsuam (1:5) | 0.61 | 322.16 | 259.21 | 124.29 |
Assays Example two: piperazine pyrazosulfuron and penoxsuam mixture composition for preventing and controlling direct seading rice field annual weed field control effectiveness test.
Reagent agent and dispenser dosage:
(1) 15% piperazine pyrazosulfuron penoxsuam oil-suspending agent (9% piperazine pyrazosulfuron: 6% penoxsuam), mu 30 grams, preparation (1#).
(2) 15% piperazine pyrazosulfuron penoxsuam suspending agents (9% piperazine pyrazosulfuron: 6% penoxsuam), mu 30 grams, preparation (2#).
Contrast medicament and dispenser dosage:
(1) 2.5% piperazine pyrazosulfuron oil-suspending agent, mu 100 grams, preparation (3#).
(2) 10% penoxsuam 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 87.6%; After dispenser 30 days, total preventive effect was all more than 97.3%, 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 (3)
1. contain a Herbicidal composition for rice field for piperazine pyrazosulfuron and penoxsuam, it is characterized in that: active ingredient is piperazine pyrazosulfuron and penoxsuam, all the other are insecticides adjuvant; The ratio of weight and number of piperazine pyrazosulfuron and penoxsuam is 5:1 ~ 1:5.
2. a kind of Herbicidal composition for rice field containing piperazine pyrazosulfuron and penoxsuam according to claim 1, be is characterized in that: be prepared into the one in the formulations such as wetting powder, water dispersible granules, suspending agent, oil-suspending agent by pesticide production technology.
3. a kind of Herbicidal composition for rice field containing piperazine pyrazosulfuron and penoxsuam according to claim 1 is preventing and kill off the application in paddy field annual weed.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105028449A (en) * | 2015-08-11 | 2015-11-11 | 广东中迅农科股份有限公司 | Pesticide composition of herbicide of penoxsulam and oxaziclomefone as well as sulfonylurea |
| CN107114391A (en) * | 2017-06-09 | 2017-09-01 | 北京科发伟业农药技术中心 | A kind of Herbicidal combinations containing penoxsuam and fenoxasulfone |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008273949A (en) * | 2007-03-30 | 2008-11-13 | Nissan Chem Ind Ltd | Herbicide composition |
| CN101310599A (en) * | 2008-05-26 | 2008-11-26 | 北京燕化永乐农药有限公司 | Rice direct seeding field mixed herbicide |
| WO2014150164A1 (en) * | 2013-03-15 | 2014-09-25 | Dow Agrosciences Llc | Synergistic weed control from applications of penoxsulam and benzobicyclon or clomazone and benzobicyclon |
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2015
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008273949A (en) * | 2007-03-30 | 2008-11-13 | Nissan Chem Ind Ltd | Herbicide composition |
| CN101310599A (en) * | 2008-05-26 | 2008-11-26 | 北京燕化永乐农药有限公司 | Rice direct seeding field mixed herbicide |
| WO2014150164A1 (en) * | 2013-03-15 | 2014-09-25 | Dow Agrosciences Llc | Synergistic weed control from applications of penoxsulam and benzobicyclon or clomazone and benzobicyclon |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105028449A (en) * | 2015-08-11 | 2015-11-11 | 广东中迅农科股份有限公司 | Pesticide composition of herbicide of penoxsulam and oxaziclomefone as well as sulfonylurea |
| CN107114391A (en) * | 2017-06-09 | 2017-09-01 | 北京科发伟业农药技术中心 | A kind of Herbicidal combinations containing penoxsuam and fenoxasulfone |
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