Pendimethalin and pyrithiobac-sodium compounded herbicide

A technology of pendimethalin and pyrimethoxine, which is applied in the field of pesticides, can solve the problems of difficult control of dosage, increased processing time, greening of weeds, etc., and achieves improved storage stability, reduced processing cost, and improved disintegration speed. Effect

Inactive Publication Date: 2012-05-02
河北博嘉农业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Pyrizachlor has good control effect on field bindweed, black nightshade, cocklebur, velvetleum and other difficult-to-control weeds, and can inhibit the growth and eradication of spinach, lettuce, bitter vegetable Poor weed control
Both soil treatment and stem-leaf treatment of pyrimethicarb can be used, but when the dose is used for stem-leaf treatment, the weed control effect will be poor, and it will easily cause weeds to turn green. If the dosage is too large, it will cause certain damage to cotton and affect the growth.
[0004] Treating cotton fields with pre-emergence herbicides such as pendimethalin can control most of the wee

Method used

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  • Pendimethalin and pyrithiobac-sodium compounded herbicide
  • Pendimethalin and pyrithiobac-sodium compounded herbicide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The components of the herbicide composition in this example are as follows: 33 kg of pendimethalin, 5 kg of pyrizachlor, 47 kg of solvent, and 15 kg of emulsifier.

[0033]Add the above-mentioned components into the reaction kettle in the order of solvent, pyrizachlor, pendimethalin and emulsifier and stir for 30 minutes, and dissolve completely and evenly to make 100 kg of emulsifiable concentrate.

[0034] Wherein, the solvent is one or a combination of two or more of methanol, ethanol, xylene, toluene, dimethylformamide, mineral spirits, and methyl oleate. The emulsifier is non-ionic sulfate or phosphate, polyoxyethylene sorbitan fatty acid ester, fatty alcohol polyoxyethylene ether series, nonylphenol polyoxyethylene ether series, tristyrylphenol polyoxyethylene ether One of the series, bisphenylethylphenol polyoxyethylene ether series, alkylphenol polyoxyethylene ether formaldehyde condensate 700#, styreneethylphenol polyoxyethylene ether 600#, calcium alkylbenzene...

Embodiment 2

[0050] The components of the herbicide composition in this example are as follows: 1 kg of pendimethalin, 4 kg of pyrizachlor, 90 kg of solvent, and 5 kg of emulsifier.

[0051] Add the above-mentioned components into the reaction kettle in the order of solvent, pyrizachlor, pendimethalin and emulsifier and stir for 30 minutes, and dissolve completely and evenly to make 100 kg of emulsifiable concentrate.

[0052] Wherein, the specific constituents of the solvent and emulsifier are the same as in Example 1.

example 3

[0054] 15 kg of pendimethalin, 5 kg of pyrizachlor, 55 kg of solvent, 15 kg of emulsifier, 5 kg of thickener, and 5 kg of antifreeze.

[0055] First add the solvent to the reaction kettle, then add pendimethalin and pyrifluzide and stir for 20 minutes until completely dissolved, add emulsifier, thickener, antifreeze and continue stirring for 10 minutes to prepare 100 kg of microemulsion.

[0056] Wherein, the solvent includes 25 kilograms of water, and also includes methanol, ethanol, xylene, toluene, dimethylformamide, dimethyl sulfoxide, N-methylpyrrolidone, cyclohexanone, solvent naphtha, methyl oleate A combination of one or more than two. The emulsifier is non-ionic sulfate or phosphate, polyoxyethylene sorbitan fatty acid ester, fatty alcohol polyoxyethylene ether series, nonylphenol polyoxyethylene ether series, tristyrylphenol polyoxyethylene ether One of the series, bisphenylethylphenol polyoxyethylene ether series, alkylphenol polyoxyethylene ether formaldehyde cond...

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PUM

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Abstract

The invention discloses a pendimethalin and pyrithiobac-sodium compounded herbicide which comprises pendimethalin, pyrithiobac-sodium and an accessory ingredient and also comprises one of a filler and a solvent, wherein the weight percentage of pendimethalin is 1%-75%, the weight percentage of pyrithiobac-sodium is 0.1%-40%, and the mass sum of pendimethalin and pyrithiobac-sodium is 1.1-80% of the total mass of the herbicide. Through the cooperation of various components and the reasonable content proportion of the various components, the pendimethalin and pyrithiobac-sodium compounded herbicide can be used for effectively preventing and eliminating weeds during soil pretreatment for cotton seedlings; the two types of main components are compounded and have different action mechanisms and complementary weed control spectrums; and after the pendimethalin and pyrithiobac-sodium compounded herbicide is used, the annual and perennial gramineae and broadleaf weeds can be prevented and removed, the weed control spectrum of a siple dosage is improved, the processing cost is lowered, the use amount of farm chemicals is reduced, and the degree of safety for cotton is improved.

Description

technical field [0001] The invention relates to a pesticide, in particular to a herbicide compounded with pendimethalin and pyrimazaba for pre-emergence soil treatment of cotton. Background technique [0002] Pendimethalin is a selective pre-emergence and post-emergence dryland soil treatment herbicide. Germinating weed shoots absorb the drug, and the drug enters the plant body and binds to tubulin, inhibiting the mitosis of plant cells, resulting in the death of the weed. Pendimethalin can control annual grass weeds, some broadleaf weeds and sedges. Such as: barnyardgrass, crabgrass, foxtail, daughter of gold, goosegrass, purslane, amaranth, quinoa, velvetleaf, black nightshade, broken rice sedge, special-shaped sedge, etc. Its control effect on gramineous weeds is better than that of broadleaf weeds, but its control effect on perennial weeds is poor. [0003] Pyrimiazide is used to control annual and perennial grass weeds and most broadleaf weeds in cotton fields. It is...

Claims

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Application Information

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IPC IPC(8): A01N43/54A01N33/18A01P13/00
Inventor 王迎春张毅郭明
Owner 河北博嘉农业有限公司
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