Herbicide formed by mixing pendimethalin with pyrithiobac-sodium and oxyfluorfen

Abstract

The invention discloses a herbicide formed by mixing pendimethalin with pyrithiobac-sodium and oxyfluorfen. The herbicide comprises pendimethalin, pyrithiobac-sodium, oxyfluorfen and one or more additives, and further comprises one or more of filling materials or solvents, wherein the mass percentage of pendimethalin is 10% to 40%; themass percentage of pyrithiobac-sodiumsubtypeis 1% to 25%;the mass percentage of oxyfluorfen is 1% to 30%; the total mass of pendimethalin, pyrithiobac-sodium and oxyfluorfen is 12% to 80% of that of the herbicide. As the ingredients are matched reasonably in type and content, the herbicide can be used for effectively preventing and killing weeds in cotton fields. The three main ingredients having complementary advantages are mixed to give full play to the advantages; various weeds can be prevented and killed through once application of the herbicide, that is, both time and labor are saved. The herbicide provided by the invention is an efficient, broad-spectrum and safe weed composition, and can be used for well preventing and killing the weeds in the cotton fields.

Description

technical field

[0001] The invention relates to a pesticide, in particular to a compound herbicide of pendimethalin, pyrizachlor and oxyfluorfen for use in cotton fields. Background technique

[0002] Cotton is an important economic crop, and it is mainly distributed in the Yangtze River Basin, the Yellow River Basin and Xinjiang in China. In recent years, with the continuous increase of cotton cropping and planting area, chemical weeding technology has been more and more widely used and popularized. Farmers’ routine drug use method is generally single drug, but there are certain limitations of single drug: such as pendimethalin Control objects: annual grass weeds, some broad-leaved 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. The control effect on gramineous weeds is better than broad-leaved weeds, and the effect on perenni...

Examples

Embodiment 1

[0023] Pyrimicarb 1%

[0024] Pendimethalin 40%

[0025] Oxyfluorfen 4%

[0026] Emulsifier (non-ionic sulfate or phosphate) 15%

[0027] Solvent (methanol) make up 100%

[0028] Add the above-mentioned components into the reaction kettle in order of solvent, pyriflume, pendimethalin, oxyflufen, and emulsifier, dissolve completely and mix well to obtain the emulsifiable concentrate. Carry out the analysis and detection of various indicators.

Embodiment 2

[0030] Pyrimicarb 5%

[0031] Pendimethalin 30%

[0032] Oxyfluorfen 1%

[0033] Dispersant (lignosulfonate) 3%

[0034] Wetting agent (alkyl sulfonate) 2%

[0035] Thickener (methyl cellulose) 0.2%

[0036] Antifreeze (Ethylene Glycol) 5%

[0037] Defoamer (isopropanol) 2%

[0038] Deionized water makes up 100%

[0039] Put the above components into the sand mill in the order of pyrifluzal, pendimethalin, oxyfluorfen, dispersant, wetting agent, deionized water, and glass beads, and turn on the cooling water for grinding . Soak the thickener with antifreeze while grinding. When the grinding particle size reaches 3~5μm, add the soaked thickener and antifreeze mixture, add defoamer and mix well, then stop the sand mill. Filter and remove the glass beads to obtain the suspending agent. Carry out the analysis and detection of various indicators.

Embodiment 3

[0041] Pyrimicarb 20%

[0042] Pendimethalin 20%

[0043] Oxyfluorfen 20%

[0044] Dispersant (sodium dodecylbenzenesulfonate) 6%

[0045] Wetting agent Naphthalene sulfonate 2%

[0046] Carrier make up 100%

[0047] Accurately weigh the above raw materials, add them into the mixer, and mix them evenly. Start the jet mill, add the above-mentioned mixed raw materials into the jet mill for pulverization, add the pulverized materials into the mixer for remixing, and obtain wettable powder. Carry out the analysis and detection of various indicators.

technical field

[0001] The invention relates to a pesticide, in particular to a compound herbicide of pendimethalin, pyrizachlor and oxyfluorfen for use in cotton fields. Background technique

[0002] Cotton is an important economic crop, and it is mainly distributed in the Yangtze River Basin, the Yellow River Basin and Xinjiang in China. In recent years, with the continuous increase of cotton cropping and planting area, chemical weeding technology has been more and more widely used and popularized. Farmers’ routine drug use method is generally single drug, but there are certain limitations of single drug: such as pendimethalin Control objects: annual grass weeds, some broad-leaved 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. The control effect on gramineous weeds is better than broad-leaved weeds, and the effect on perenni...

Examples

Embodiment 1

[0023] Pyrimicarb 1%

[0024] Pendimethalin 40%

[0025] Oxyfluorfen 4%

[0026] Emulsifier (non-ionic sulfate or phosphate) 15%

[0027] Solvent (methanol) make up 100%

[0028] Add the above-mentioned components into the reaction kettle in order of solvent, pyriflume, pendimethalin, oxyflufen, and emulsifier, dissolve completely and mix well to obtain the emulsifiable concentrate. Carry out the analysis and detection of various indicators.

Embodiment 2

[0030] Pyrimicarb 5%

[0031] Pendimethalin 30%

[0032] Oxyfluorfen 1%

[0033] Dispersant (lignosulfonate) 3%

[0034] Wetting agent (alkyl sulfonate) 2%

[0035] Thickener (methyl cellulose) 0.2%

[0036] Antifreeze (Ethylene Glycol) 5%

[0037] Defoamer (isopropanol) 2%

[0038] Deionized water makes up 100%

[0039] Put the above components into the sand mill in the order of pyrifluzal, pendimethalin, oxyfluorfen, dispersant, wetting agent, deionized water, and glass beads, and turn on the cooling water for grinding . Soak the thickener with antifreeze while grinding. When the grinding particle size reaches 3~5μm, add the soaked thickener and antifreeze mixture, add defoamer and mix well, then stop the sand mill. Filter and remove the glass beads to obtain the suspending agent. Carry out the analysis and detection of various indicators.

Embodiment 3

[0041] Pyrimicarb 20%

[0042] Pendimethalin 20%

[0043] Oxyfluorfen 20%

[0044] Dispersant (sodium dodecylbenzenesulfonate) 6%

[0045] Wetting agent Naphthalene sulfonate 2%

[0046] Carrier make up 100%

[0047] Accurately weigh the above raw materials, add them into the mixer, and mix them evenly. Start the jet mill, add the above-mentioned mixed raw materials into the jet mill for pulverization, add the pulverized materials into the mixer for remixing, and obtain wettable powder. Carry out the analysis and detection of various indicators.

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