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herbicidal composition

A herbicidal composition, a technology of promethacin, applied in the field of pesticides, can solve the problems of weeds being prone to resistance, no good chemical control, no control effect, etc., and achieves the advantages of reducing the dosage, fast weeding speed, and improving safety. Effect

Active Publication Date: 2015-11-18
ZHEJIANG TIANFENG BIOLOGICAL SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002]At present, duckweed and Spirogyra occur in a large area in some areas in rice fields and lotus root fields, and there is no good chemical control. Conventional paddy field herbicides have no control effect. The use of a herbicide has a narrow herbicidal spectrum, unsatisfactory effect, high cost, and weeds are prone to resistance, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] 5 kg of metolachlor, 11 kg of clomazone, 30 kg of promethazine, 3 kg of dispersant BX, 5 parts of agricultural dispersant NNO, 5% polyoxyethylene ether, 15 kg of white carbon black, kaolin 35 kilograms, above-mentioned raw material is added water kneading after mixing, jet pulverization, granulation drying, promptly obtains described 46% metolachlor·clomazone·proteron water dispersible granule.

Embodiment 2

[0022] 0.5 kg of metolachlor, 0.9 kg of clomazone, 2.6 kg of promethazine, 5 kg of dispersant NNO, 8.5 kg of polyoxyethylene ether, 5 kg of perlite, 20 kg of bentonite, and 60 kg of kaolin. The above-mentioned raw materials are firstly pulverized by air flow of the original promethazin, then other raw materials are added, kneaded with water, granulated and sieved to obtain the 4% metolachlor·clomazone·profenazin granule.

[0023] Examples of bioassays:

[0024] Indoor test report on the control of duckweed with metolachlor, clomazone and promethen mixed.

[0025] Purpose of the test: Under the conditions of potted plants in the greenhouse, the indoor control effect of metolachlor, clomazone and promethazine on duckweed was determined indoors, and their combined effects were evaluated, so as to provide a basis for the development of formulations of mixed agents and the development of pesticides. The registration of field drug efficacy trials provides a scientific theoretical b...

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PUM

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Abstract

The invention discloses a weeding composition which comprises three active components, namely metolachlor, clomazone and prometryn. Mass ratio of metolachlor to clomazone to prometryn is 1:1.5-2.5:5-7. By complex formulation of metolachlor, clomazone and prometryn, the weeding composition has an obvious spread spectrum synergy, has a high effect of preventing weeds such as duckweed, Spirogyra, barnyard grass, digitaria sanguinalis and the like, can remove weeds rapidly, can be used to obviously reduce drug dosage. Thus, the environment is improved; food safety is raised; and the weeding composition is beneficial to cost reduction and yield increasing, and is in accordance with national conditions in China.

Description

technical field [0001] The invention belongs to the technical field of pesticides, in particular to a herbicide composition for controlling duckweed and Spirogyra in paddy fields and lotus root fields. Background technique [0002] At present, duckweed and Spirogyra occur in large areas in paddy fields and lotus root fields, and there is no good chemical control. Conventional paddy field herbicides have no control effect. Using a herbicide alone has a narrow herbicidal spectrum and unsatisfactory effect. The cost is high, and weeds are prone to resistance. In view of these present conditions, there is an urgent need to develop new herbicide products applied to paddy fields and lotus root fields. And it has a higher control effect on duckweed and Spirogyra. Contents of the invention [0003] In order to overcome the deficiencies of the prior art, the invention provides a composite herbicidal composition that is safe for crops, friendly to the environment and strong in ada...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N43/80A01P13/00A01N37/22A01N43/70
Inventor 范伟赠徐雅飞陈丰喜胡杰
Owner ZHEJIANG TIANFENG BIOLOGICAL SCI
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