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《Plant Fiber Sciences in China》 2018-06
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Indoor Test about the Effect of Mixed Bromoxynil and Quizalofop-p-ethyl on the Safety of Industrial Hemp

XIAO Ziyong;BAI Lianyang;WU Lamei;Hunan University of Humanities,Science and Technology;Hunan Agricultural Biotechnology Research Center;  
Toxicity safety test of bromoxynil mixed with quizalofop-p-ethyl was taken on industrial hemp,and the results showed that there was no apparent phytotoxicity on industrial hemp after 14 days with the application of the mixed herbicides; after 21 days,the GR_(50) and GR_(90) to Echinochloa crusgalli were 15. 24 g a. i./667 m~2 and 25. 44 g a. i./667 m~2,respectively. Meanwhile,the GR_(50) and GR_(90) to Amaranthus retroflexus were 14. 17 g a. i./667 m~2,27. 06 g a. i./667 m~2,respectively. In addition,the GR_(10) to industrial hemp was 31. 87 g a. i./667 m2. The selective index of mixed herbicides to Echinochloa crusgalli and Amaranthus retroflexus were 1. 33 and 1. 34,respectively,which showed that bromoxynil mixed with quizalofop-p-ethyl has high toxicity to weeds and certain risk to industrial hemp,so field experiment for safety on industrial hemp is necessary in the future.
【Fund】: 现代农业产业技术体系建设专项(CARS-16-E19);; 湖南省农科院科技创新项目(2017QN46);; 农科院创新团队(2017JC-01);; 中央引导地方科技发展专项资金项目
【CateGory Index】: S451.223
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