CN103766354B - A kind of containing metribuzin with the Herbicidal combinations of bentazone - Google Patents
A kind of containing metribuzin with the Herbicidal combinations of bentazone Download PDFInfo
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- CN103766354B CN103766354B CN201310667082.0A CN201310667082A CN103766354B CN 103766354 B CN103766354 B CN 103766354B CN 201310667082 A CN201310667082 A CN 201310667082A CN 103766354 B CN103766354 B CN 103766354B
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Abstract
The invention discloses a kind of containing metribuzin with the Herbicidal combinations of bentazone, it includes effective ingredient metribuzin and bentazone, and remaining is insecticides adjuvant.The mass fraction of metribuzin and bentazone is 3%～70% than for 1:5～1:30, metribuzin and bentazone quality summation mass percent in Herbicidal combinations.According to application needs, Herbicidal combinations of the present invention can be prepared as dispersibling the one in oil-suspending agent, suspending agent, wettable powder, water dispersible granules, is used for preventing and kill off rice terrace annual grassy weeds.The preventive effect of Oryza sativa L. annual grassy weeds is better than the present invention metribuzin and bentazone is used alone, and reduces the using dosage of pesticide, decreases the pesticide adverse effect to ecological environment, effectively administers herbicide resistance problem.
Description
Technical field
The present invention relates to a kind of containing metribuzin with the Herbicidal combinations of bentazone, be to be with metribuzin and bentazone
Effective ingredient, is used for preventing and treating rice terrace annual grassy weeds.
Background technology
Chemical method weeding is agriculturally one of Main Means controlling weeds.In recent years, due to some herbicide kinds
Large area is used alone, and already leads to a lot of weeds and develops immunity to drugs.Meanwhile, grass when weeds occur is mutually complicated, and grass family is miscellaneous
Grass, broad leaved weed, the mixed life of dried tuber multiclass weeds, single variety herbicide uses can not solve farmland weed, all can show certain
Defect on the one hand and limitation.Variety classes herbicide mixture, has that herbicidal spectrum is wide, promote actual effect, delay weeds to resist
The property of medicine, time and labour saving advantage.
Metribuzin belongs to organic heterocyclic class, is inner sucting conduction type herbicide for paddy field, mainly by root and the stem of weeds
Leaf base absorbs.Leaves and stems chlorosis after weeds contact medicament, stop growing, until withered.
Bentazone is a kind of contact killing type, selectivity herbicide after seedling.Seedling stage processes, and is worked by blade contact.Drought
When field uses, permeated by blade and be transmitted to inhibited photosynthesis in chloroplast；When paddy field uses, moreover it is possible to by Root Absorption,
It is transmitted to stem and leaf, hinders weeds photosynthesis and water metabolism, make physiological dysfunction and lethal.
Variety classes herbicide mixture, has that herbicidal spectrum is wide, promote actual effect, delay herbicide resistance, time and labour saving
Advantage.Screened by formulation of pesticide, actual prevention effect can be effectively improved, reduce dosage, reduce cost, delay disease, worm, grass
The drug-fast generation of evil, is the important means of agricultural synthesis improvement.The present inventor is to metribuzin and the recipe determination of bentazone
Conduct in-depth research, find that metribuzin and bentazone have phase in certain mixed ratio scope to rice terrace annual grassy weeds
Add or potentiation, after further study, complete the present invention.
Summary of the invention
It is an object of the invention to solve in prior art to develop immunity to drugs farmland weed problem and actual prevention effect
Poor, it is provided that one is efficiently, low toxicity, quick-acting are good and the lasting period is long, the beneficially Herbicidal combinations of farmland weed comprehensive control.
It is a further object of the present invention to provide and be used for preventing and kill off farmland weed by this Herbicidal combinations, be particularly useful for rice terrace one
Year raw weeds.
Technical scheme: for achieving the above object, the invention provides a kind of weeding group containing metribuzin and bentazone
Compound, it comprises the mass fraction of effective ingredient metribuzin and bentazone, metribuzin and bentazone than for 1:5～1:30,
Metribuzin and bentazone quality summation mass percent in Herbicidal combinations are 3%～70%, and remaining is insecticides adjuvant.
Herbicidal combinations of the present invention, is prepared as dispersibling oil-suspending agent, suspending agent, wettable powder by pesticide production technology
One in agent, water dispersible granules, the production technology of various application forms all belongs to existing known technology, does not repeats them here.
In Herbicidal combinations of the present invention use insecticides adjuvant include solvent, emulsifying agent, wetting agent, stabilizer, dispersant,
Thickening agent, pH adjusting agent, defoamer, antifreezing agent, deionized water, filler etc., be all conventional in Pesticide formulation various help
Agent, concrete composition and consumption, according to recipe requirements, are determined through simple test.
The Herbicidal combinations that the present invention provides, uses spray method to use, it is also possible to use as required and agriculturally apply
Other use technology.
The Herbicidal combinations that the present invention provides, in use it should be noted that following principle:
If 1 for rice direct seeding field, it is necessary to the dispenser when live the previous day or Oryza sativa L. one leaf heart stage.After dispenser in 15 days
Face, field is kept to moisten, it is impossible to have hydrops.When needing after rice seedling to pour water, water layer can not flood Oryza sativa L. lobus cardiacus.
If 2 are used for transplanted rice field and seedling throwing field, it is necessary to 5-7 day dispenser after rice transplantation.During dispenser, there is water in field
3-5 centimetre of layer, water conservation 5-7 days.Can only moisturizing during this, it is impossible to draining, water layer can not flood the Rice Leaf heart.
The Herbicidal combinations that the present invention provides has the advantages that:
1, the Herbicidal combinations that the present invention provides, shows obvious potentiation or summation action in certain ratio range,
The prevention effect of compositions is significantly improved than single dose, reduces the using dosage of pesticide, decreases times for spraying, reduces
Drug cost, decreases the pesticide adverse effect to ecological environment.
2, the Herbicidal combinations that the present invention provides, two kinds of effective ingredient mechanism of action are different, can overcome long-term list
One uses the shortcoming easily producing resistance, extends the service life of medicament, the comprehensive control important in inhibiting to Weed Resistance.
3, the Herbicidal combinations that the present invention provides, use cost is low, easy to use, time saving and energy saving, and its popularization and application have
Huge economic benefit and social benefit.
Detailed description of the invention
The present invention is illustrated by specific examples below, but the invention is not restricted to specific examples below.Embodiment
In each component percentages be weight/mass percentage composition.
Assays Example one: metribuzin and bentazone formulation screening test.
For further appreciating that metribuzin and the synergy to weeds of the bentazone mixture, the present inventor to metribuzin and
Bentazone mixture has carried out formulation screening test:
Test material:
Barnyard grass [Echinochloa crusgalli (L.) Beaw Setaria] (field collection Seed storage).
Sagittaria trifolia L. Var. Angusti-folia(Sieb.) Kitag.(Sagittaria sagittifolia L.) [Sagittaria trifolia] (field collection Seed storage).
Test apparatus:
Controlled illumination box；POTTER precision laboratory spray tower；Electronic balance (sensibility reciprocal 0.1mg)；Micropipette rifle
Deng.
Test method:
The purity first weighing certain mass is the 96.5% former medicine of metribuzin, 95% bentazone raw pesticide, adds acetone the most molten
Dilute with the Tween 80 aqueous solution of 0.1% after solution, be configured to single dose mother solution respectively, series proportioning is set according to mixture purpose, each
Proportioning arranges 5～7 Concentraton gradient.Select representative susceptible weeds seed according to single dose weed control spectrum, cultivate to 2 leaves 1
The heart is standby.After being processed by the weeds stem and leaf selecting numbering, it is placed on incubated at room temperature 20 days in illumination box, calculates prevention effect
(fresh weight preventive effect or strain preventive effect), then calculates dense EC in suppression with method of least square50(95% confidence limit), then with Sun Yun abundant method meter
Calculate co-toxicity coefficient (CTC).
Co-toxicity coefficient (CTC) >=120 shows as potentiation；Co-toxicity coefficient (CTC)≤80 shows as antagonism；80 ＜
Co-toxicity coefficient (CTC) ＜ 120 shows as summation action.
Actual measurement toxicity index (ATI)=(standard agent EC50/ reagent agent EC50)×100
Theoretical toxicity index (TTI)=(percentage composition of A in the toxicity index × mixture of the A)+(toxicity index × mixture of B
The percentage composition of middle B).
Co-toxicity coefficient (CTC)=[mixture actual measurement toxicity index (ATI)/mixture theory toxicity index (TTI)] × 100.
Measurement result shows, metribuzin and bentazone between mixed ratio 1:5～1:30, have obvious potentiation or
Summation action.The mixed ratio of metribuzin and bentazone is when 1:30, and the potentiation to barnyard grass and Sagittaria trifolia L. Var. Angusti-folia(Sieb.) Kitag.(Sagittaria sagittifolia L.) is obvious, altogether poison
Coefficient respectively reaches 135.41 and 156.92.
The synergy of barnyard grass is measured by table 1, different ratio metribuzin with bentazone.
The synergy of Sagittaria trifolia L. Var. Angusti-folia(Sieb.) Kitag.(Sagittaria sagittifolia L.) is measured by table 2, different ratio metribuzin with bentazone.
Example of formulations one: (42% metribuzin bentazone wettable powder).
Mix homogeneously in blender will be entered after the coarse pulverization in proportion of above-mentioned formula, then after comminution by gas stream, i.e. prepare mixing
Prepare 42% metribuzin bentazone wettable powder.
Example of formulations two: (45% metribuzin bentazone dispersibles oil-suspending agent).
Above-mentioned formula Central Plains medicine, solvent, emulsifying agent are dissolved into homogeneous oil phase；Under high velocity agitation, 45% it is mixed to prepare
Metribuzin bentazone dispersibles oil-suspending agent.
Example of formulations three: (40% metribuzin bentazone suspending agent).
Above-mentioned formula is pulverized the most in advance, adds in sand mill and grind, allotment system after high shear mixing
Obtain 40% metribuzin bentazone suspending agent.
Example of formulations four: (50% metribuzin bentazone water dispersible granules).
By above-mentioned formula dry pulverization process in proportion, pelletize, dry, the prepared 50% metribuzin bentazone of screening is water-dispersible
Property granule.
Field control effectiveness test embodiment one: to transplanted rice field and the field control effectiveness test of live field annual grassy weeds.
Reagent agent and dispenser dosage:
(1) 42% metribuzin bentazone wettable powder (2% metribuzin 40% bentazone), mu preparation 109.5
Gram (1#).
(2) 45% metribuzin bentazones dispersible oil-suspending agent (1.5% metribuzin 43.5% bentazone), and mu is used
101.3 grams of preparation (2#).
(3) 40% metribuzin bentazone suspending agents (1.5% metribuzin 38.5% bentazone), mu preparation 114.2
Gram (3#).
(4) 50% metribuzin bentazone water dispersible granules (2% metribuzin 48% bentazone), mu preparation 91.5
Gram (4#).
(5) 1% metribuzin suspending agents, mu 3 grams of preparation (5#).
(6) 48% bentazone water preparations, mu 90 grams of preparation (6#).
(7) clear water comparison.
Dispenser period: the weeds 3～4 leaf phase, be watered 30L even spraying.
Prevent and kill off object: barnyard grass, Sagittaria trifolia L. Var. Angusti-folia(Sieb.) Kitag.(Sagittaria sagittifolia L.), Herba Commelinae, Herba Digitariae.
Result of the test is shown in Table 3 and table 4.As can be seen from the test results: after medicine 11 days, the Herbicidal combinations of the present invention is to water
The average preventive effect of rice transplant field and live field annual grassy weeds respectively reaches 94.1% and more than 94.8%.Herbicidal combinations of the present invention
Significantly better than the single dose of comparison, expanding weed control spectrum, potentiation is notable, and quick-acting and lasting period are substantially better than single dose.
Table 3, preventing and treating transplanted rice field annual grassy weeds field control effectiveness test result (after medicine 11 days).
Table 4, preventing and treating rice direct seeding field annual grassy weeds field control effectiveness test result (after medicine 11 days).
Claims (1)
1. one kind contain metribuzin and the Herbicidal combinations of bentazone, it is characterised in that: comprise effective ingredient metribuzin and
The mass fraction of bentazone and insecticides adjuvant, metribuzin and bentazone is more total than for 1:30, metribuzin and bentazone quality
It is 3%～70% with the mass percent in Herbicidal combinations.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310667082.0A CN103766354B (en) | 2013-12-09 | 2013-12-09 | A kind of containing metribuzin with the Herbicidal combinations of bentazone |
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| CN201310667082.0A CN103766354B (en) | 2013-12-09 | 2013-12-09 | A kind of containing metribuzin with the Herbicidal combinations of bentazone |
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| CN103766354A CN103766354A (en) | 2014-05-07 |
| CN103766354B true CN103766354B (en) | 2017-01-04 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104351215A (en) * | 2014-10-30 | 2015-02-18 | 广东中迅农科股份有限公司 | Herbicide for potato field |
| CN111387198B (en) * | 2020-04-17 | 2022-05-03 | 江苏瑞邦农化股份有限公司 | Weeding composition containing bentazone, oxaziclomefone and benzobicyclon and application thereof |
| WO2024062498A1 (en) * | 2022-09-21 | 2024-03-28 | Willowood Chemicals Limited | Synergistic ternary herbicidal composition |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| ES2144455T3 (en) * | 1992-01-30 | 2000-06-16 | Mitsubishi Chem Corp | DERIVED FROM 1,3-OXAZIN-4-ONA, HERBICIDE CONTAINING IT, AND NEW INTERMEDIATE TO PRODUCE IT. |
| IL112014A (en) * | 1993-12-24 | 1999-10-28 | Rhone Poulenc Agrochimie | 1,3-Oxazin-4-one derivatives and herbicides containing the same |
| ITMI20060394A1 (en) * | 2006-03-06 | 2007-09-07 | Isagro Ricerca Srl | NEW SYNERGIC HERBICIDE COMPOSITIONS |
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