Compound herbicide of carfentrazone, grass amine sulfonamide pentafluoride and cyhalofop butyl

A technology of penoxsulam and cyhalofop-butyl, applied in herbicides, algicides, biocides, biocides, etc., can solve the problems of difficult to achieve effective control, wide herbicidal spectrum, etc. The effect of fast weed death, expansion of weed killing spectrum, and reduction of dosage

Inactive Publication Date: 2010-03-10
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 a method for the current problem that the herbicidal spectrum is not wide and it is difficult to achieve the purpose of effective control in the process of controlling weeds in paddy fields by using mefentrazone, penoxsulfon or cyhalofen alone. Compound herbicide of mefentrazone, penoxsulam and cyhalofop-ethyl

Method used

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  • Compound herbicide of carfentrazone, grass amine sulfonamide pentafluoride and cyhalofop butyl

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] (1) Preparation of 40% carfentrazone·cyhalofop-methyl·pentoxsulam wettable powder (effective drug mass ratio 1:1:6), selection of wettability auxiliaries and fillers. The components are prepared according to mass percentage: 5% of mefentrazone, 5% of penoxsulam, 30% of cyhalofop-methyl, and appropriate amount of additives and fillers.

[0018] (2) Preparation process: Mix 5 g of mefentrazone, 5 g of penoxsulam, 30 g of cyhalofop-ethyl and additives, and then fill it with fillers to 100 g, and mechanically pulverize it with a Tate brand FW80 universal pulverizer , Serve as 40% mefentrazone · penoxsulam · cyhalofop-ester wettable powder.

Embodiment 2

[0020] Synergistic Bioassay:

[0021] (1) Weeds for the test: For the direct-seeding paddy field of Jianhu County Agricultural Science Institute (no soil sealing herbicide was used after sowing), the field area where monocotyledonous and dicotyledonous weeds occur more uniformly and uniformly was selected, and 5 plots were divided. The area of ​​each plot is 8m 2 , 2m in each plot before medication 2 , and treat the number of monocotyledonous and dicotyledonous weeds in the designated point to be roughly equal.

[0022] (2) Tested drug: 40% mefentrazone, penoxsulam, cyhalofop-methyl wettable powder provided by Example 1, active pharmaceutical ingredients mefentrazone 5%, penoxsulam 5%, cyanogen Fluoxate 30% (mass ratio of active pharmaceutical ingredients is 1:1:6).

[0023] (3) Comparative drug: 40% mefentrazone water-dispersible granule (produced by FMC Company of the United States, repackaged by Suzhou Fumeishi Plant Protection Agent Co., Ltd.), 2.5% penoxsulam oil suspe...

Embodiment 3

[0029] Field efficacy test results.

[0030] In 2009, in the direct-seeding rice test field of the 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 comparative drugs were sprayed respectively, and the effect investigation was carried out 15 days after the application: 40% Mefentrazone · Penoxsulam · Cyhalofop-methyl wettable powder according to 20g / 667m 2 Spray 40kg of water, the herbicidal effect is 93.82%; 2 Spray 40kg of water, the herbicidal effect is 54.54%; 2.5% penoxsulam oil suspension is 60g / 667m 2 Spray 40kg of water, its weed control effect is 65.58%; 2 Spraying 40kg of water has a weeding effect of 48.53%. 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. In practice, the mass ratio o...

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Abstract

The invention belongs to a herbicide for removing monogenus or dicotyledonous weeds in a paddy field, in particular to a compound herbicide with effective active components in percentage by weight: 1carfentrazone, 2-4 grass amine sulfonamide pentafluoride and 10-20 cyhalofop butyl as well as preparations with different contents and a plurality of preparation formulations; and the compound herbicide comprises the effective active components, a wetting additive, a filler, and the like. The invention obviously improves the effect, increases a weed control speed, obtains the effect of preventingand removing a plurality of broad-leaved weeds and gramineae weeds in a paddy field after compounding the carfentrazone, the grass amine sulfonamide pentafluoride and the cyhalofop butyl, has low toxicity and remains, expands a weed removal spectrum, remarkably reduces the dosage, the medicament-applying number and the medicament cost and is beneficial to delaying the succession speed of weed communities and prolonging the service life of the herbicide.

Description

Technical field: [0001] The invention belongs to a chemical herbicide for controlling various broad-leaved weeds in paddy fields and gramineous weeds such as barnyardgrass and stephab, and relates to a kind of effective active ingredient of mefentrazone, penoxsulam and cyhalofop-ethyl compound herbicides. 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...

Claims

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Application Information

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IPC IPC(8): A01N43/90A01N43/653A01N39/04A01P13/00
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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