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Multi-element compound weeding composition for paddy field

A herbicidal composition and a technology for paddy fields, which are applied in the field of agrochemicals, can solve the problems of weeds being prone to drug resistance, environmental pollution, narrowing of the herbicidal spectrum, etc., so as to delay the drug resistance of weeds, reduce low cost, reduce production costs and reduce production costs. The effect of cost of use

Inactive Publication Date: 2017-06-20
ZHEJIANG TIANFENG BIOLOGICAL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Herbicide varieties containing a single active component have defects in weed control to varying degrees, such as weeds are prone to resistance after continuous use, the herbicide spectrum becomes narrower, and environmental pollution is caused.

Method used

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  • Multi-element compound weeding composition for paddy field
  • Multi-element compound weeding composition for paddy field
  • Multi-element compound weeding composition for paddy field

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Example 1 10.5% Difenpyr-Protilachlor-Pyrazosulfuron-methyl Granules (3:7:0.5)

[0022] Difenpyr 3%, pretilachlor 7%, pyrazosulfuron-methyl 0.5%, sodium a-alkenyl sulfonate (AOS) 1%, sodium lignosulfonate (REAX82P) 5%, glucose 5%, white carbon 10% black, balance kaolin. Weigh pretilachlor crude oil in advance according to the above ratio and adsorb it with white carbon black, mix the above other ingredients uniformly according to the above ratio, and pass through airflow crushing to make the average particle size of the material less than 5 microns, add water and knead evenly, and move to the granulation equipment Medium granulation, drying at 45°C to obtain 10.5% dipacenil·pretilachlor·pyrazosulfuron-methyl granules.

[0023] The indoor bioactivity assay test was used to measure the co-toxicity coefficient and joint action type of Example 1 on the heteromorphous sedge in the paddy field, and the test results are shown in Table 1.

[0024] Table 1 (calculated by activ...

Embodiment 2

[0032] Example 2 20% fenfenpyr·pretilachlor·pentoxsulam dispersible oil suspension concentrate (3:15:2)

[0033] Difenpyr 3%, pretilachlor 15%, penoxsulam 2%, calcium dodecylbenzenesulfonate 6%, polyoxyethylene sorbitan monooleate 12%, fatty alcohol polyoxyethylene Ether 3%, organic bentonite 3%, methyl oleate balance. Mix all the above-mentioned ingredients uniformly according to the stated ratio, and grind the obtained material with a horizontal sand mill to make the average particle size of the obtained material less than 5 microns, and then 20% fenfenpyr·pretilachlor·pentoxsulam dispersible oil suspension.

[0034] In the laboratory bioactivity test, the co-toxicity coefficient and joint action type of the barnyardgrass in the paddy field of Example 2 were measured, and the test results are shown in Table 3.

[0035] Table 3 (calculated by active ingredients)

[0036]

[0037]

[0038] According to Sun Yunpei's method to evaluate the principle of interaction, the ...

Embodiment 3

[0043]Example 3 22% dipacenil·pretilachlor·flumesulfuron wettable powder (2.5:16.5:3)

[0044] Difenpyrax 2.5%, pretilachlor 16.5%, pyriflusulfuron 3%, alkylphenol polyoxyethylene formaldehyde condensate sulfate 8%, sodium lignosulfonate 7%, fatty alcohol polyoxyethylene ether 3% , Silica 8%, kaolin the balance. Adsorb pretilachlor crude oil and white carbon black according to the ratio, then mix all the ingredients evenly according to the above ratio, and then pulverize the material to make the average particle size of the material less than 5um. The 22% dipacenil·pretilachlor·flumesulfuron wettable powder can be obtained.

[0045] Indoor biological activity assay test, the co-toxicity coefficient and joint action type of Example 3 on the Chinese knotweed in the paddy field were measured, and the test results are shown in Table 5.

[0046] Table 5 (calculated by active ingredients)

[0047]

[0048]

[0049] According to Sun Yunpei's method to evaluate the principle ...

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Abstract

The invention discloses a multi-element compound weeding composition for a paddy field. The multi-element compound weeding composition is prepared from the following components in percentage by weight: 10 percent to 60 percent of effective components and 40 percent to 90 percent of a pesticide preparation auxiliary component, wherein a first effective component is pyraclonil; a second effective component is pretilachlor; a third effective component is any one of sulfonylurea weedicide including pyrazosulfuron-ethyl, penoxsulam, orthosulfamuron, ethoxysulfuron, metazosulfuron and the like; the weight ratio of the first effective component to the second effective component to the third effective component is (1 to 10) to (1 to 10) to (1 to 10). By adopting the multi-element compound weeding composition, the herbicide controlling spectrum can be remarkably enlarged and the whole prevention and removal effects on weeds of the paddy field are improved; meanwhile, the composition has good safety on paddy rice and is a very good novel pesticide composition for preventing and removing annual weeds of the paddy field.

Description

technical field [0001] The invention belongs to the field of agrochemicals, and in particular relates to a herbicidal composition aimed at solving the problem of controlling annual weeds in paddy fields. Background technique [0002] Pyraclonil belongs to a new type of bispyrazole herbicide for paddy fields, and its mechanism of action is an inhibitor of protoporphyrinogen oxidase. It is a contact herbicide. It can effectively control all kinds of weeds, including barnyardgrass, alien sedge, sagittaria, bermudagrass, etc., as well as weeds resistant to sulfonylurea herbicides. [0003] Pretilachlor belongs to the chloroacetamide herbicides, which mainly inhibit the growth of cells by hindering protein synthesis. The drug can be absorbed through the plant hypocotyl, mesocotyl and coleoptile, and slightly absorbed by the root. The symptoms of damage are that the primary leaves do not emerge or protrude from the side of the coleoptile, twist and cannot stretch normally, growth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N47/36A01N43/90A01N37/22A01P13/00
CPCA01N47/36A01N37/22A01N43/90A01N2300/00
Inventor 陈丰喜祁月月范伟赠陈涛
Owner ZHEJIANG TIANFENG BIOLOGICAL SCI
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