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Paddy-field weeding composition

A herbicidal composition and a technology for paddy fields, which are applied in the field of pesticides, can solve the problems of pesticide residues, frequent use of herbicides, and difficulty in controlling weeds completely, and achieve the effects of wide herbicidal spectrum and remarkable herbicidal effect.

Inactive Publication Date: 2017-01-04
ZHEJIANG TIANFENG BIOLOGICAL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The herbicidal composition can effectively solve many problems currently faced in the prevention and control of weeds in paddy fields, such as large field application doses, frequent use of herbicides, serious pesticide residues, difficulty in completely controlling weeds, and easy to produce resistance.

Method used

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  • Paddy-field weeding composition
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  • Paddy-field weeding composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Bioassay Example 1: Determination of the activity of the mixed use of fenpyramid, clomazone and bentazone on rice weeds.

[0038] The purpose of the test: through the greenhouse pot activity test to more clearly determine the synergistic effect of the mixed use of fenpyramid, clomazone and bentazone on weeds in paddy fields, and further compare the compositions, as well as the composition and single agent Between the herbicidal activity, in order to better illustrate the herbicidal composition of the present invention.

[0039] Test target: select barnyardgrass and sausage that occur most commonly in paddy fields as the test target.

[0040] Test agents: 96% oxazone TC, 95% clomazone TC, 97% bentazone TC, all provided by Zhejiang Tianfeng Bioscience Co., Ltd.

[0041] Cultivation of test materials: The soil used for the test is the special soil collected for the test without using the plot. Choose a flower pot with a diameter of 8 cm and a depth of 7 cm. Fill the soil ...

Embodiment 1

[0052] Formulation example 1: 42% fenpyramid. clomazone. bentazone wettable powder

[0053] 6 parts by weight of fenpyramid, 12 parts by weight of clomazone, 24 parts by weight of bentazone, 1.5 parts by weight of wetting agent pulling powder, 6 parts by weight of dispersant T2020, 8 parts by weight of white carbon black, light calcium Make up to 100 parts by weight. The above components were uniformly mixed and then jet milled to obtain a 42% oxazone-clomazone-benzazone wettable powder.

Embodiment 2

[0054] Formulation example 2: 30% fenpyramid. clomazone. bentazone wettable powder

[0055] 5 parts by weight of fenpyramid, 9 parts by weight of clomazone, 16 parts by weight of bentazone, 1.5 parts by weight of wetting agent K-12, 6 parts by weight of dispersant T2020, 6 parts by weight of white carbon black, kaolin supplement to 100 parts by weight. Mix the above components uniformly, and then perform jet milling to obtain 30% oxazone-clomazone-benzazone wettable powder.

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Abstract

The invention relates to the technical field of pesticide, and discloses a paddy-field complex weeding agent composition and an application thereof. The paddy-field complex weeding agent composition is prepared from an effective constituent A, an effective constituent B and an effective constituent C, the effective constituent A is 1%-20% of metamifop, the effective constituent B is 1%-40% of clomazone, and the effective constituent C is 1%-60% of bentazone. The weeding composition is compared with a single dosage with the same effective constituents, the synergism effect is obvious, and a grass killing spectrum is effectively enlarged; meanwhile, the using quantity of all the effective constituents is reduced, the safety of crops is improved, and occurrence and development of weed pesticide resistance when a single pesticide preparation is used is delayed. The weeding composition is suitable for preventing and removing most grass family weeds, broadleaf weeds and sedge family weeds in a paddy field. Particularly, the weeding composition has the quite good controlling effect on volunteer seedlings, resistance green tares and the like with serious harm in dry direct seeding rice fields in partial areas, the lasting period is long, and the weeding composition is safe for rice.

Description

technical field [0001] The invention relates to a paddy field herbicide composition and its application. In particular, it relates to a ternary compound herbicide composition containing fenpyramid, clomazone and bentazone, which belongs to the technical field of pesticides. 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. But at the same time, in the past 25 years, the rapid promotion and long-term large-scale use of selective herbicides with similar mechanisms of action such as sulfonylureas, amides, and synthetic hormones have eliminated some weed strains that are sensitive to these agents. Resistant biotypes produced by genetic selection in less sensitive resistant...

Claims

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Application Information

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IPC IPC(8): A01N43/88A01N43/80A01N43/76A01P13/00
CPCA01N43/88A01N43/76A01N43/80A01N2300/00
Inventor 徐雅飞范伟赠卓加雄陈丰喜
Owner ZHEJIANG TIANFENG BIOLOGICAL SCI
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