Herbicidal Activity on the EW Formulation of the Selective Rice Herbicide Cyhalofop Butyl.

Kondo Naohiko, Matsumoto Tetsuo, Matsuya Kuni, Katahashi Hisao, Imai Yasufumi

doi:10.3719/weed.42.1

Bibliographic Information

Other Title

水稲用選択性除草剤シハロホップブチルEW製剤の除草効果

Description

Cyhalofop butyl, [R-(+)-n-butyl-2-(4-(2-fluoro-4-cyanophenoxy) phenoxy) propionate] is a selective rice graminicide which can control up to the 5-6 leaf stage of Echinochloa crus-galli by foliar application. Japanese agricultural practice requires development of a granule formulation of cyhalofop butyl. In addition to this granule formulation which is applied to paddy water at about the 3 leaf stage, an EW (emulsion, oil in water) formulation has been intensively studied for foliar application at the late stage, i. e., the 5 leaf stage, as a “rescue” treatment. The herbicidal activity of cyhalofop butyl EW formulation equals the cyhalofop butyl EC (emulsifiable concentrate) formulation, and can control the 5-6 leaf stage of this plant at 240g ai/ha. To obtain stable efficacy, a 500-1000l/ha spray solution of cyhalofop butyl EW formulation is recommended. The results obtained suggest that cyhalofop butyl EW formulation is a promising rice herbicide by which to control the late leaf stage of Echinochloa crus-galli in terms of high biological activity and crop safety.

Journal

Journal of Weed Science and Technology

Journal of Weed Science and Technology 42 (1), 1-7, 1997

The Weed Science Society of Japan

Keywords

Details 詳細情報について

CRID: 1390282679257753984

NII Article ID: 130003811233

DOI: 10.3719/weed.42.1

ISSN: 18824757; 0372798X

Text Lang: en

Data Source

JaLC
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CiNii Articles

Abstract License Flag: Disallowed

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