Pendimethalin and pyrithiobac-sodium compounded herbicide

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...

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 weeds, but it is very effective in controlling nightshade, field bindweed, perennial weeds such as spinach, lettuce, bitter vegetable, etc. Poor, these weeds will continue to germinate and harm the growth of cotton

At this time, you can use pyrizachlor, etc. to spray stems and leaves, but the dosage is not easy to control. If the dosage is small, the weed control effect will be poor; if the dosage is too large, it will affect the growth of cotton

Use two kinds of pesticides to process separately, the processing time is increased, the amount of pesticides used is large, the cost of use is increased, and the safety of cotton is affected.

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