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Weed controlling compound pesticide composition and preparation method thereof

A technology for compounding compositions and pesticides, applied in botanical equipment and methods, herbicides and algicides, chemicals for biological control, etc. Slow play and other problems, to achieve the effect of low cost, expanded weed killing spectrum, quick effect and good lasting effect

Active Publication Date: 2011-11-02
YONGNONG BIOSCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Temperature has no effect on the final effect of weeding, but affects the speed of its efficacy
Generally, when the temperature is low, the drug effect is slow, and the plant will stop growing after poisoning, but it will not die immediately; the plant will die soon after the temperature rises.

Method used

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  • Weed controlling compound pesticide composition and preparation method thereof
  • Weed controlling compound pesticide composition and preparation method thereof
  • Weed controlling compound pesticide composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] In order to verify the weed control effect of different ratios of fluroxypyr and fenflurzone on cornfield weeds, the indoor activity determination of different ratios of fluroxypyr and fenflurzone on weeds in cornfields was carried out, according to The weight percent in the table is made into corresponding concentration, carries out indoor weeding test, to measure fresh weight control effect (E 0 ), the test results are reported as follows:

[0028] Determination method: This test adopts the greenhouse potting method to study the herbicidal activity of fluroxyrpyr and fenflurzone in different proportions on cornfield weeds. The herbicidal activity is higher, and the quick-acting, control effect, and herbicidal spectrum are also significantly higher than that of fluroxyfen. The analysis of the combined effects of the two showed that the combined effects of all the ratio treatments on the tested weeds were additive. Considering the combined action type, herbicidal acti...

Embodiment 2

[0034] 18% fluroxypyr-oxazone wettable powder

[0035]

[0036]

[0037] After the above raw materials are uniformly mixed in a double-helix conical mixer, they are pulverized by a jet mill to make a powder-shaped compound pesticide composition containing fluroxypyr and fenflumezone, which is aimed at controlling weeds in corn fields Drug efficacy test, 15 days after the drug, the control effect reached more than 94% (see Table 2).

[0038] From the results, it can be seen that the 18% fluroxypyr-fenflurzone WP is superior to the 20% fluroxyrpyr EC in terms of quick-acting effect, herbicidal spectrum and control effect in controlling weeds in cornfields.

Embodiment 3

[0040] 49% Isooctyl Fluroxypyr Acetate · Oxentrazone Water Dispersible Granules

[0041]

[0042] After the above raw materials are mixed evenly in a double-helix conical mixer, they are ultrafinely pulverized by a jet mill, and an appropriate amount of water is added to be granulated by a granulator. The compound pesticide composition of isooctyl ester and oxaflumezone, in the field efficacy test for the control of weeds in cornfields, has a control effect of more than 93% 15 days after application (see Table 3).

[0043] From the results, it can be seen that 49% fluroxypyr isooctyl · fenflurzone water dispersible granules are better than 288g / L fluroxypyr iso- Octyl esters EC.

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PUM

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Abstract

The invention discloses a weed controlling compound pesticide composition. The pesticide composition contains such active ingredients as fluroxypyr or esters thereof and topramezone, wherein the weight ratio of fluroxypyr or esters thereof to topramezone is 15: (1-3). The pesticide composition is characterized in that the dosage form of the pesticide composition is wettable powder or water dispersible granules; based on the total weight of the composition, the content of fluroxypyr or esters thereof is 10-70%, the content of topramezone is 2-30% and the content of additives is 10-88%; and theamount of the esters of fluroxypyr is converted into the amount of fluroxypyr. The invention also discloses a preparation method of the wettable powder or water dispersible granules. The pesticide composition is formed by compounding fluroxypyr or esters thereof and topramezone, has low toxicity, wide weed control spectrum, quick effect, good persistence and medium cost, can control broadleaf weeds, annual grass weeds and the like, is a more ideal pesticide variety for controlling weeds in the maize fields and has the advantages of simpleness in production, convenience and safety in use, zeroenvironmental pollution and the like.

Description

technical field [0001] The invention relates to a pesticide composition for preventing and controlling weeds in cornfields, in particular to a compound pesticide composition containing fluroxypyr or its ester and fenflumezone and a preparation method thereof. Background technique [0002] In recent years, due to the extensive use of various pesticides, the resistance of weeds in cornfields has become higher and higher, and weeds are common and various in variety. Amaranthus, humulus, black nightshade, snakehead sausage, iron amaranth, dawanhua, quinoa, small fly, sorrel leaf Polygonum, cocklebur, velvetleum, sedge and Artemisia annua, field bindweed in some areas, lettuce, Echinacea, etc., are seriously harmful throughout the country. In the prevention and control of chemical agents, the main ones currently used for soil spray treatment are acetochlor, atrazine, promethachlor, metolachlor, dimethicone, etc. Mevalyl and other single agents and acetochlor + atrazine and other...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N43/80A01N43/40A01P13/00
Inventor 汪云强张子翱刘何华王淼
Owner YONGNONG BIOSCI
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