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Weeding composition and preparation thereof

A herbicidal composition and herbicide technology are applied in the directions of herbicides, algaecides, biocides, animal repellents, etc., and can solve the problem that the control effect of paddy field chinensis and ox tendon is not ideal, and it is impossible to control cattle to the maximum extent. Weeds and sagebrush, rice and the environment are harmful, etc., to achieve the effect of delaying the resistance of weeds, improving the control effect, and safety of rice

Inactive Publication Date: 2012-10-03
LIANBAO CROP TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are a variety of herbicides on the market, but some of these herbicides have developed resistance due to long-term use, and some are harmful to rice and the environment, causing their control effects to decline greatly. Herbicides with low toxicity to rice, safe to the environment, and good weed control effects have received great attention
[0004] Fenpyramid is an aryloxyphenoxypropionic acid herbicide developed by the Korea Chemical Technology Research Institute and developed by Korea Dongbao Company. It is mainly used to control barnyardgrass, stephenia, goosegrass and other annual grasses. Weeds, but the control effect of fenpyramid on the rice field daughter and goosegrass is still not ideal, and it cannot control goosegrass and goosegrass to the maximum extent

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1: the control effect test of herbicidal composition of the present invention to weeds

[0027] The test was carried out in a rice test field in Zhengzhou, Henan Province. The herbicidal composition was mixed with fenpyramid and cyhalofop-ethyl. The herbicidal composition and each component were dissolved in water before application. Among them, each treatment was repeated 4 times, and the area of ​​the plot was 20m 2 , a total of 28 plots, the rice is more than 2 leaves and 1 heart stage, and the drug is 450kg / hm 2 , spray evenly. The number of barnyardgrass, Qianjinzi and goosegrass were counted before spraying, and the number of dead barnyardgrass, Qianjinzi and goosegrass were counted 10 days after spraying. The test treatments are shown in Table 1, and the control results are shown in Table 2. The anti-efficiency calculation is according to the following formula:

[0028] Efficacy of Barnyard Grass / Thousand-Gold / Goosegrass = (number of dead barnyardg...

Embodiment 3

[0037] Example 3: 70% fenpyramid · cyhalofop emulsifiable concentrate

[0038] 39% fenpyramid, 31% cyhalofop-ethyl, 10% benzene, 10% xylene and 10% sodium dodecylsulfonate are fully mixed according to the proportion, followed by mixing and stirring processing in sequence to obtain an emulsifiable concentrate preparation.

Embodiment 4

[0039] Example 4: 60% fenpyramid · cyhalofop-methyl water dispersible granules

[0040] 28.1% fenpyramid, 31.9% cyhalofop-methyl, 2% sulfonated oil, 11% sodium starch glycolate, 18% sodium tripolyphosphate and polystyrene, 8% calcium carbonate, 1% carrier Uniform, pulverized to make wettable powder, then add a certain amount of water to mix, extrude and granulate, dry and sieve to make water dispersible granule.

[0041] Example: 5: 50% fenpyramid · cyhalofop-ethyl wettable powder

[0042] 23.5% fenpyramid, 26.5% cyhalofop-methyl, 15% alkylphenol polyoxyethylene ether and 17% fatty alcohol ethylene oxide are fully mixed in proportion, diatomaceous earth is added to 100%, and the ultra-fine pulverizer Wettable powder is obtained after pulverization.

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PUM

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Abstract

The invention relates to the pesticide preparation field, and discloses a weeding composition. The weeding composition of the invention comprises metamifop and cyhalofop-butyl, and the weight ratio of the metamifop to the cyhalofop-butyl is 1-99:99-1. The invention also discloses a herbicide whose active component is composed of the weeding composition of the invention, and the weight percent of the weeding composition in the herbicide is 1-99%. The weeding composition and the preparation thereof of the invention have significantly improved prevention effect on Chinese sprangletop and goosegrass, have synergistic effect, have a reduced effective component using amount, can delay the generation of weed drug resistance, have reduced environmental pollution, are safe for paddy rice, and can be widely used in the agriculture field.

Description

technical field [0001] The invention relates to the field of pesticide preparations, in particular to a herbicidal composition and its preparation. Background technique [0002] Rice is an annual gramineous plant, which is produced on all continents except Antarctica. Rice is not only the most important food crop in my country, but also one of the main food crops in the world. The world's rice cultivation area is about 145 million hectares. The sown area of ​​rice in my country accounts for 1 / 4 of the country's grain crops. Regardless of planting area or output, rice ranks first among food crops in my country. However, rice fields in all rice-growing regions in my country have suffered from weed damage to varying degrees. Among them, the area of ​​moderate weed damage accounts for more than 46% of the total planting area of ​​rice, and the area of ​​severe weed damage accounts for more than 11.5%. These weeds compete with rice in all aspects and cause damage to rice, resu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N43/76A01N39/04A01P13/00
Inventor 王洲卢桂鲜
Owner LIANBAO CROP TECH
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