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Compound weeding composition for paddy field

A herbicidal composition and paddy field technology, applied in the field of agrochemicals, can solve problems such as environmental pollution, weeds are prone to drug resistance, and the herbicidal spectrum is narrowed, achieving low cost, delaying weed resistance, reducing production costs and The effect of cost of use

Inactive Publication Date: 2017-05-31
ZHEJIANG TIANFENG BIOLOGICAL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Herbicide varieties containing a single active component have defects in weed control to varying degrees, such as weeds are prone to resistance after continuous use, the herbicide spectrum becomes narrower, and environmental pollution is caused.

Method used

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  • Compound weeding composition for paddy field
  • Compound weeding composition for paddy field
  • Compound weeding composition for paddy field

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Example 1 16% penoxsulam·clomazone·cyhalofop-methyl dispersible oil suspension concentrate (1:5:10) active ingredient of penoxsulam 1%, active ingredient of clomazone 5% , cyhalofop-ethyl active ingredient 10%, calcium dodecylbenzenesulfonate 8%, styrylphenol polyoxyethylene ether 7%, fatty alcohol polyoxyethylene ether 3%, organic bentonite 3%, methyl oleate margin. Mix all the above-mentioned ingredients uniformly according to the stated ratio, and grind them with a horizontal sand mill so that the average particle size of the obtained material is less than 5 microns, and then 16% penoxsulam·clomazone·cyhalofop can be obtained. Disperse oil suspension concentrate (1:5:10).

[0024] The indoor biological activity test was carried out to measure the co-toxicity coefficient and joint action type of the barnyardgrass in the paddy field in Example 1, and the test results are shown in Table 1.

[0025] Table 1 (calculated by active ingredients)

[0026]

[0027] Accor...

Embodiment 2

[0032] Example 2 12% penoxsulam·clomazone·oxaflume dispersible oil suspension concentrate (1:5:6)

[0033] Penoxsulam active ingredient 1%, clomazone active ingredient 5%, Mefentrazone active ingredient 6%, calcium dodecylbenzenesulfonate 6%, polyoxyethylene sorbitan monooleate 12%, fatty alcohol polyoxyethylene ether 3%, organic bentonite 3%, the balance of methyl oleate. Mix all the above-mentioned ingredients evenly according to the stated ratio, and grind them with a horizontal sand mill so that the average particle size of the obtained material is less than 5 microns, and then 12% penoxsulam · clomazone · fenoxazone can be obtained Dispersible oil suspension concentrate (1:5:6)

[0034] Indoor biological activity determination test, the co-toxicity coefficient and joint action type of Example 2 to crabgrass in paddy field were measured, and the test results are shown in Table 3.

[0035] Table 3 (calculated by active ingredients)

[0036]

[0037]

[0038] Accord...

Embodiment 3

[0043] Example 3 10% penoxsulam·clomazone·bisfluben in water emulsion (2:5:3) 2% active ingredient of penoxsulam, 5% active ingredient of clomazone, bisfluben Active ingredient 3%, tristyrylphenol polyether phosphate 8%, polyoxyethylene polyoxypropylene block polyether 4%, solvent naphtha S150 30%, cyclohexanone 8%, silicone defoamer 0.2%, Ethylene glycol 5%, water balance. Dissolve penoxsulam, clomazone and bispyribac into solvent S150 and cyclohexanone, heat to 50-60°C during the dissolution process, and add emulsifier tristyrylphenol polyether phosphoric acid after complete dissolution Ester, polyoxyethylene polyoxypropylene block polyether, and stir again evenly to obtain the oil phase. Stir water, ethylene glycol, and defoamer evenly to obtain the water phase; slowly add the oil phase to the water phase, cut while adding, and continue shearing for 30 minutes after the addition is complete, and then 10% pentafluorosulfonium can be obtained Grass Ammonium Clomazone Bispyr...

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Abstract

The invention discloses a compound weeding composition for a paddy field. The compound weeding composition is prepared from the following components in percentage by weight: 10 to 60 percent of effective components and 40 to 90 percent of a pesticide preparation auxiliary component, wherein the effective components include penoxsulam serving as a first effective component, clomazone serving as a second effective component, and any one of cyhalofop-butyl, metamifop, bispyribac-sodium, pyribenzoxim, pyriminobac-methyl, pretilachlor and pendimethalin serving as a third effective component; and the weight ratio of the first effective component, the second effective component and the third effective component is 1: (1 to 10): (1 to 50). The compound weeding composition can obviously expand the herbicide controlling spectrum and enhance the overall removal effect of paddy field weeds; and besides, the composition is high in rice safety, and is a very good novel drug composition for preventing and removing annual weeds in the paddy field.

Description

technical field [0001] The invention belongs to the field of agrochemicals, and in particular relates to a herbicidal composition aimed at solving the problem of controlling annual weeds in paddy fields. Background technique [0002] Penoxsulam (penoxulam) belongs to the triazolopyrimidine sulfonamide herbicides, and its mechanism of action is an acetolactate synthase (ALS) inhibitor, which can be absorbed through stems, leaves, young shoots and roots, and transmitted to branches through xylem and phloem. growth tissue, inhibit plant growth, and cause plant necrosis and death. It is suitable for dry direct seeding field, water direct direct seeding field, seedling field, throwing seedling field and transplanting cultivation field of rice. The method of application can be treated by spraying or soil mixing. Penoxsulam is a broad-spectrum herbicide for paddy fields, which can effectively control barnyardgrass, stephenia and annual Cyperaceae weeds, and is effective against m...

Claims

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Application Information

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IPC IPC(8): A01N43/90A01N43/80A01N39/04A01N43/76A01N43/54A01N37/22A01N33/18A01P13/00
CPCA01N43/90A01N33/18A01N37/22A01N39/04A01N43/54A01N43/76A01N43/80A01N2300/00
Inventor 陈丰喜祁月月范伟赠曹轩
Owner ZHEJIANG TIANFENG BIOLOGICAL SCI
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