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Weeding composition for paddy field

A herbicidal composition and rice field technology, applied in the field of pesticides, can solve the problems of poor control effect of resistant weeds, and achieve good control effect, rice safety, and moderate cost

Inactive Publication Date: 2016-11-09
ZHEJIANG TIANFENG BIOLOGICAL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a kind of herbicidal composition for paddy field in order to solve the technical problem that the control effect of resistant weeds in the existing paddy field is poor

Method used

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  • Weeding composition for paddy field
  • Weeding composition for paddy field
  • Weeding composition for paddy field

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Formulation example 1: 18% pinoxaden·pretilachlor (2:16) emulsifiable concentrate

[0022] 2% pinoxaden, 16% pretilachlor, 2% metrafenpyr, 3% tristyryl phenol, 5% glycerin fatty acid polyoxyethylene ether, xylene added to 100%. After the above materials were fully mixed in proportion, 18% pinoxaden-pretilachlor EC was prepared.

[0023] Indoor activity assay test: according to the herbicide indoor activity assay test, measure the co-toxicity coefficient and joint action type of Example 1 to barnyardgrass in paddy fields, and the test results are shown in Table 1

[0024] Table 1 (calculated according to active ingredients)

[0025]

[0026] According to the above test results, it is fully demonstrated that the herbicidal composition made after the combination of pinoxaden and pretilachlor is compared with 5% pinoxaden EC and 30% pretilachlor EC when used alone, Example 1 The coordinated and synergistic effect on barnyardgrass is remarkable, and the control effect i...

Embodiment 2

[0027] Formulation example 2: 10% pinoxaden-cyhalofop-ethyl (2:8) emulsifiable concentrate

[0028] 2% pinoxaden, 8% cyhalofop, 5% isoxadifen, 4% tristyryl phenol, 8% castor oil polyoxyethylene ether, and 100% mineral spirits. After the above materials were fully mixed in proportion, 10% pinoxaden·cyhalofop-ethyl (2:8) emulsifiable concentrate was prepared.

[0029] In the indoor activity assay test, the co-toxicity coefficient and joint action type of Example 2 on barnyardgrass in paddy fields were measured, and the test results are shown in Table 2.

[0030] Table 2 (calculated by active ingredients)

[0031]

[0032] According to the above test results, it is fully demonstrated that the herbicidal composition made after the compounding of pinoxaden and cyhalofop-ethyl, compared with 5% pinoxaden EC or 10% cyhalofop-ethyl EC alone, Example 2 has a remarkable synergistic effect on barnyard barnyardgrass, and the control effect is significantly improved.

Embodiment 3

[0033] Formulation Example 3: 21% pinoxaden·fenthiazide (2:19) wettable powder

[0034] 2% pinoxaden, 19% mefentrafen, 6% mefenpyr, 3% sodium alkylbenzene sulfonate, 5% glycerin fatty acid polyoxyethylene ether, 8% white carbon black, light calcium Replenishes to 100%. The above materials are fully mixed in proportion and then pulverized by jet milling method to 1000 mesh with a pass rate of over 90% to prepare 21% pinoxaden·fenthiazide (2:19) wettable powder.

[0035] In the indoor activity assay test, the co-toxicity coefficient and joint action type of Example 3 on barnyardgrass in rice fields were measured, and the test results are shown in Table 3.

[0036] Table 3 (calculated by active ingredients)

[0037]

[0038]

[0039] According to the above test results, it is fully demonstrated that the herbicidal composition prepared after the compounding of pinoxaden and mefenoxet, and 5% pinoxaden EC, or 50% mefeniazide wettable powder alone Compared with the use, the...

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Abstract

The invention provides a weeding composition for a paddy field. The weeding composition comprises, by weight, 5 to 60% of effective components, 2 to 8% of a safener, 5 to 30% of an auxiliary agent and 5 to 80% of a solid filling material or liquid diluent, wherein a first effective component is pinoxaden, a second effective component is any one selected from a group consisting of pretilachlor, mefenacet, penoxsulam, cyhalofop butyl, quinclorac, ethoxysulfuron, bensulfuron methyl, pyrazosulfuron ethyl, clomazone, carfentrazone-ethyl, bispyribac-sodium, pyribenzoxim, metamifop and bentazone, and a weight ratio of the first effective component to the second effective component is 1: 10 to 10 : 1. The weeding composition has the technical effects of economic performance, high efficiency, high safety, and improved prevention and treatment effect on gramineous weeds, broadleaf weeds and cyperaceous weeds, especially substantial prevention and treatment synergy on gramineous weeds.

Description

technical field [0001] The invention belongs to the technical field of pesticides, and relates to a herbicide, in particular to a paddy field herbicide compounded with pinoxaden. Background technique [0002] my country has a long history of planting rice and has a vast territory. It is one of the main rice producing countries in the world. In the 1970s and 1980s, chemical herbicides entered China, which brought good news to China's farmland weed control work, and a large number of laborers were freed from heavy manual weeding work. However, the development of everything has two sides. In the past 25 years, the rapid promotion and continuous use of selective herbicides with similar mechanisms of action, such as sulfonylureas, amides and synthetic hormones, has caused some people who are sensitive to these types of agents Weed strains are eliminated, and resistant biotypes of less sensitive resistant plants begin to spread rapidly due to genetic selection. After 2000, quinc...

Claims

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Application Information

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IPC IPC(8): A01N43/90A01N37/22A01N39/04A01N43/78A01N43/42A01N43/653A01N25/32A01N25/14A01N25/04A01P13/00
CPCA01N43/90A01N25/04A01N25/14A01N25/32A01N37/22A01N39/04A01N43/42A01N43/653A01N43/78A01N2300/00
Inventor 范伟赠陈丰喜徐雅飞赵梅勤祁月月
Owner ZHEJIANG TIANFENG BIOLOGICAL SCI
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