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Herbicide composition and its preparation and use

A composition and herbicide technology, applied in the direction of herbicides and algicides, application, botany equipment and methods, etc., can solve the problem of grass weeds being ineffective

Inactive Publication Date: 2018-05-08
HUBEI RUNZENG GREEN PLANT PROTECTION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Such as: squash, commelina, fleas, cocklebur, Kochia, velvetleum, Maijiagong, pig scorpion, shepherd's purse, wormwood (artemisia), purslane, spinach, quinoa, Polygonum , black nightshade, chickweed, special-shaped sedge, broken rice sedge, ball sedge, oil sedge, sedge, Cyperus cyperus, etc., but it is ineffective against gramineous weeds

Method used

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  • Herbicide composition and its preparation and use
  • Herbicide composition and its preparation and use
  • Herbicide composition and its preparation and use

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Experimental program
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preparation example Construction

[0044] The preparation method of the above-mentioned emulsifiable concentrate preparation may include, for example, mixing and stirring each active component, solvent, co-solvent and emulsifier to form a uniform transparent oil phase to obtain an emulsifiable concentrate preparation.

[0045] Preferably, the aqueous emulsion or microemulsion consists of 1-95% active ingredient, 1-30% emulsifier, 0-30% co-solvent, 1-30% solvent, and 0-10% antifreeze , Thickener 0-10%, water make up to 100%.

[0046] Preferably, the preparation method of the water emulsion may include, for example, mixing the active ingredient, emulsifier, co-solvent and solvent to make it a uniform oil phase; mixing water, thickener, antifreeze, etc. to make it a uniform water phase. Mutually. Under high-speed shear, add the water phase to the oil phase or add the oil phase to the water phase to form a water emulsion with good dispersibility.

[0047] Preferably, the microemulsion is prepared by mixing and st...

experiment example 1

[0064] Targets for testing: Amaranthus retroflexus and Echinochloa crusgalli (L.) Beauv were collected from farmland near Huangji Town, Xiangyang City, Hubei Province.

[0065] Test agents: bentazone, cyhalofop, bispyribac

[0066] Preparation of liquid medicine

[0067] Preparation of a single dose: Measured according to NY / T1155.6-2006, the medicinal solution is ready-to-use, the original drug is dissolved in DMF, and Triton X-100 emulsifier is added to prepare a 10% mother solution. According to the characteristics of the medicine, set 6 doses from high to low, the doses are: bentazone 18.75, 37.5, 75, 150, 300, 600g.ai. / ha, cyhalofop-ethyl 1.875, 3.75, 7.5, 15, 30, 60g.ai. / ha, bispyribac 0.75, 1.5, 3, 6, 12, 24g.ai. / ha, diluted with water containing 0.1% Triton X-100 emulsifier to form a series of concentrations.

[0068] The preparation of the mixture of bentazone, cyhalofop-methyl and bispyribac-methyl: measure according to NY / T1155.6-2006, the mass ratio of bentazone:...

preparation example 1

[0087] Preparation of 25 wt% bentazone·cyhalofop-methyl·bispyribac emulsifiable concentrate (mass ratio 10:5:1).

[0088] According to the ratio of 15.6% by weight of bentazone, 7.8% by weight of cyhalofop-methyl, 1.6% by weight of bispyribac, 5% by weight of dimethyl sulfoxide, and toluene to 100% by weight, the raw materials were stirred and mixed, and made A homogeneous clear oil is formed, ie a 25% by weight emulsifiable concentrate is obtained.

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Abstract

The invention relates to the field of agricultural herbicides and discloses an herbicide composition and its preparation and use. Active ingredients of the herbicide composition include bentazone, cyhalofop-butyl and bispyribac-sodium according to a mass ratio of 1-100: 1-15: 1. The herbicide composition exhibits an excellent synergistic effect. Compared with a single agent, the herbicide composition significantly improves the weeding effect, thoroughly prevents and treats older weeds and some resistant weeds, reduces the use of pesticides, reduces the cost of pesticides used by farmers and the degree of impact on the environment, broadens a herbicide spectrum and effectively delays the production and development of the resistance of weeds to a single agent. The herbicide composition improves effects and is safe to paddy.

Description

technical field [0001] The present invention relates to the field of agricultural herbicides, in particular to a herbicide composition and formulation and its application, in particular to the composition and formulation for controlling annual weeds in paddy fields and its application. Background technique [0002] Bentazone (bentazone) is a kind of selective contact type post-emergence herbicide, which is used for weed seedling stem and leaf treatment. Its structure is as shown in formula (I). The original drug of bentazone has low toxicity and can control annual Broadleaf and sedge weeds. Such as: squash, commelina, fleas, cocklebur, Kochia, velvetleum, Maijiagong, pig scorpion, shepherd's purse, wormwood (artemisia), purslane, spinach, quinoa, Polygonum , black nightshade, chickweed, special-shaped sedge, broken rice sedge, ball sedge, oil sedge, sedge, Cyperus cyperus, etc., but it is invalid for grass weeds. [0003] [0004] Cyhalofop-butyl (cyhalofop-butyl), its ...

Claims

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Application Information

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IPC IPC(8): A01N43/88A01N39/04A01N43/54A01P13/00
CPCA01N39/04A01N43/54A01N43/88A01N2300/00
Inventor 尹春艳王震宇郝格非
Owner HUBEI RUNZENG GREEN PLANT PROTECTION CO LTD
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