Mixed herbicide of carfentrazone-ethyl, pyrazosulfuron-ethyl and quinclorac

A technology of quinclorac and pyrazosulfuron-methyl, which is applied in the direction of herbicides, algicides, biocides, biocides, etc., can solve problems such as difficult to achieve effective control and not wide herbicidal spectrum, and achieve miscellaneous The effects of fast grass death, reduced dosage, and delayed succession

Inactive Publication Date: 2010-02-24
徐宝玉
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to provide an azole weed control method for the current problem that the herbicidal spectrum is not wide and it is difficult to achieve the purpose of e...

Method used

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  • Mixed herbicide of carfentrazone-ethyl, pyrazosulfuron-ethyl and quinclorac

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] (1) The preparation of 40% mefentrazone · pyrazosulfuron · quinclorac wettable powder (effective drug mass ratio 1: 1.25: 21.08), selection of wettability additives and fillers. The components are prepared according to mass percentage: 1.72% of mefentrazone, 2.14% of pyrazosulfuron-methyl, 36.14% of quinclorac, and appropriate amount of additives and fillers.

[0018] (2) Preparation process: fully stir 1.72g of mefentrazone, 2.14g of pyrazosulfuron-methyl, 36.14g of quinclorac and additives, and then fill it with fillers to 100g, and use Tate brand FW80 universal pulverizer Mechanically pulverize it to form a 40% wettable powder of mefentrazone, pyrazosulfuron, and quinclorac.

Embodiment 2

[0020] Synergistic Bioassay:

[0021] (1) Weeds to be tested: For the direct-seeding paddy field of Jianhu County Agricultural Science Institute (no soil sealing herbicide was used after sowing), the field area with relatively uniform occurrence of dicotyledonous weeds and barnyardgrass was selected and divided into 5 plots , the area of ​​each plot is 8m 2 , 2m in each plot before medication 2 , and treat the number of dicotyledonous weeds and barnyardgrass in the designated point to be roughly equal, and pull out the daughter of the daughter (the effect of the compound herbicide on the daughter of the daughter is poor).

[0022] (2) Tested drug: 40% mefentrazone, pyrazosulfuron-methyl, and quinclorac wettable powder are provided by Example 1. Acid 36.14% (mass ratio of active pharmaceutical ingredients is 1: 1.25: 21.08).

[0023] (3) Contrast drugs: 40% mefentrazone water-dispersible granules (produced by FMC Company of the United States, repackaged by Suzhou Fumeishi Pl...

Embodiment 3

[0029] Field efficacy test results:

[0030] In 2009, in the direct-seeding rice test field of Jianhu County Agricultural Science Institute, on July 2, 20 days after the rice seeds were sown, weeds generally emerged, and the above-mentioned test drugs and comparison drugs were sprayed respectively, and the effect investigation was carried out 15 days after the application: 40% Methazone-Pyrazosulfuron-Quinclorac WP by 70g / 667m 2 Spray 40kg of water, the herbicidal effect is 90.28%; 2 Spray 40kg of water, the weeding effect is 62.36%; 10% pyrazosulfuron-methyl wettable powder is 20g / 667m 2 Spray 40kg of water, its weeding effect is 58.18%; 50% quinclorac wettable powder according to 50g / 667m 2 Spraying 40kg of water has a weeding effect of 40.23%. The compound herbicide has the functions of obvious synergism, fast herbicide speed, wide herbicide spectrum and reduced cost.

[0031] The above-mentioned examples are not specific limitations on the present invention. During spe...

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Abstract

The invention belongs to a herbicide for preventing and weeding dicotyledon weeds and barnyard grasses in paddy fields, relating to a mixed herbicide which has the effective active components of carfentrazone-ethyl, pyrazosulfuron-ethyl and quinclorac. The mixed herbicide comprises the effective active components, moist additive, filler and the like, and is characterized in that the effective active components are the carfentrazone-ethyl, the pyrazosulfuron-ethyl, the quinclorac, preparations with different contents thereof and various dosage forms, wherein the carfentrazone-ethyl, the pyrazosulfuron-ethyl and the quinclorac have the ratio by weight of 1:(1-2.5):(15-40). The invention has the advantages that after being mixed, the carfentrazone-ethyl, the pyrazosulfuron-ethyl and the quinclorac have obvious effects of synergism and enhancing weed control speed, obtains control effect to various broadleaf weeds and the barnyard grasses in the paddy fields, has low toxicity and low residual, expands the weed control spectrum, greatly lowers the drug dosage, the pesticide application frequency and the drug cost, and is beneficial to retarding the succession velocity of weed populations and prolonging the service life of the herbicide.

Description

Technical field: [0001] The invention belongs to a chemical herbicide for controlling grass weeds such as broad-leaved weeds and barnyardgrass in paddy fields, and relates to a compound herbicide whose effective active ingredients are mefentrazone, pyrazosulfuron-methyl and quinclorac. Background technique: [0002] The use of chemical herbicides is one of the main measures for farmers to reduce labor intensity, effectively control weed damage in farmland, and obtain high yields of crops. For a long time to come, it is inevitable to use chemical herbicides to control field weeds , reduce labor intensity and increase crop yield. [0003] In order to protect food safety, protect the environment, and protect human health, the research and development and application of chemical herbicides are developing in the direction of high efficiency, low toxicity, and low residue. Scientific researchers at all levels have made fruitful efforts for it. High-efficiency, low-toxicity, and l...

Claims

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Application Information

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IPC IPC(8): A01N47/36A01N43/653A01N43/42A01P13/00
Inventor 徐宝玉刘学进王东明刘琴潘宁徐加健
Owner 徐宝玉
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