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Evaluation of weed control efficacy and crop safety of the new HPPD-inhibiting herbicide-QYR301 by Wang, Hengzhi; Liu, Weitang; Zhao, Kongping; Yu, Hui; Zhang, Jia; Wang, Jinxin is a Biochemistry, Genetics and Molecular Biology article available to read on EtoBox.

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## Abstract QYR301, 1,3-Dimethyl-1H-pyrazole-4-carboxylic acid 4-[2-chloro-3-(3,5-dimethyl-pyrazol-1-ylmethyl)-4-methanesulfonyl-benzoyl]-2,5-dimethyl-2H-pyrazol-3-yl ester, is a novel HPPD-inhibiting herbicide and was evaluated to provide a reference for post-emergence (POST) application under greenhouse and field conditions. The crop safety (180 and 360 g active ingredient (a.i.) ha^−1^ treatments) experiment revealed that wheat, paddy, garlic and corn were the only four crops without injury at both examined herbicide rates. The weed control efficacy (60 and 120 g a.i. ha^−1^) experiment showed that QYR301 exhibited high efficacy against many weeds, especially weeds infesting paddy fields. Furthermore, it is interesting that both susceptible and multiple herbicide resistant __Echinochloa crus-galli__ (L.) Beauv. and __Echinochloa phyllopogon__ (Stapf) Koss, two notorious weed species in paddy field, remained susceptible to QYR301. Further crop tolerance results indicated that 20 tested paddy hybrids displayed different levels of tolerance to QYR301, with the japonica paddy hybrids having more tolerance than indica paddy hybrids under greenhouse conditions. Results obtained from f

Who reads Evaluation of weed control efficacy and crop safety of the new HPPD-inhibiting herbicide-QYR301?

Author

Wang, Hengzhi; Liu, Weitang; Zhao, Kongping; Yu, Hui; Zhang, Jia; Wang, Jinxin

Publisher

Springer Science and Business Media LLC; London: Nature Publishing Group; [London]: Springer Nature; Nature Publishing Group; Society for Mining, Metallurgy and Exploration Inc.; Research Square; Springer Nature; Island Press (ISSN 2045-2322)

Published

2018

Language

EN

Field

Biochemistry, Genetics and Molecular Biology (Life Sciences)