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Herbicide for rice field

A herbicide and paddy field technology, applied in the direction of herbicides, algicides, biocides, biocides, etc., to achieve the effects of labor cost saving, fast and convenient use of technology, and flexible application time

Active Publication Date: 2014-09-24
江苏省苏科农化有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] At present, there are no patent documents and reports on the use of isoproturon, clomazone, and clomazone-methyl in direct-seeding rice fields in China.

Method used

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  • Herbicide for rice field
  • Herbicide for rice field
  • Herbicide for rice field

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1 Indoor experiment

[0027] In order to verify that the combination of the three active ingredients of isoproturon, clomazone and clomazone-methyl can have a good synergistic effect, the applicant first carried out an indoor experiment to determine The herbicidal effect of pyrazosulfuron-methyl and its different mixed combinations was evaluated, and the combined effect was evaluated. Gramineae weeds barnyardgrass and broad-leaved weeds Cormina were selected as target weeds in the experiment.

[0028] The test method is as follows:

[0029] To test the activity of the mixed medicine on barnyardgrass and bermudagrass, put a certain amount of soil in a plastic bowl with a height of 6cm and a diameter of 10cm, sow 20 weed seeds for testing evenly in the plastic bowl, cover with a 0.5c-1cm thick Fine sandy soil, cultivated at a room temperature of about 25°C, compounded the above-mentioned original drug solution and diluted it into a drug solution with a certain...

Embodiment 2

[0040] Example 2 35% clomazone · chlorpyrazosulfuron · isoproturon dispersible oil suspension concentrate, its component mass percent is:

[0041]

Embodiment 3

[0042] Example 3 19% clomazone · chlorpyrazosulfuron · isoproturon wettable powder, the mass percentage of each component is:

[0043]

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Abstract

The invention discloses herbicide for a rice field. The herbicide comprises 31 to 60 mass percent of an active ingredient, 11 to 19 mass percent of auxiliary and a carrier, wherein the active ingredient consists of 1 to 5 mass parts of isoproturon, 8 to 25 mass parts of clomazone and 8 to 30 mass parts of halosulfuron-methyl. The herbicide is safe for the germination and seedling emergence of rice, free of influence on the growth of seedlings and long in lasting time, has good prevention and control effects on resistant barnyard grass, resistant moleplant seeds, digitaria sanguinalis, setaria lutescens, nutgrass flatsedge, monochoria vaginalis and the like, and is an excellent herbicide for preventing and controlling annual grassy weeds, broadleaf weeds and nutgrass flatsedge in a direct-sowing rice field.

Description

technical field [0001] The invention belongs to the field of pesticides for preventing and controlling agricultural pests, and in particular relates to a paddy field herbicide compounded with isoproturon, clomazone and chlorpyrazosulfuron. Background technique [0002] Rice field diseases, insect pests and weeds are one of the main obstacles affecting high and stable rice yields. However, due to long-term use of chemical herbicides, rice fields develop resistance, and the weeding effect is not ideal, especially resistant barnyardgrass, resistant D. chinensis, and resistant crabgrass , resistant bermudagrass, etc. are becoming more and more serious, and can no longer be controlled with current conventional herbicides. [0003] At present, chemical weeding in paddy fields mostly adopts "closed weeding + post-emergence stem and leaf weeding". At present, closed weeding is mainly based on pretilachlor-based compound agents, but because pretilachlor has a greater impact on rice g...

Claims

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Application Information

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IPC IPC(8): A01N47/36A01P13/00A01N43/80A01N47/30
Inventor 邱光明亮胡存中孙以文
Owner 江苏省苏科农化有限责任公司
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