Sensibility of Echinochloa grass to quinclorac in the rice planting areas in Sichuan province

doi:10.14088/j.cnki.issn0439-8114.2020.14.016

Abstract

Abstract: In order to understand the resistance of barnyard Echinochloa grass to quinclorac in rice fields of Sichuan province. Whole plant bioassay was conducted to determine the sensibility of twenty barnyard grass populations to quinclorac and to quantify their resistance level. The results showed that ten populations were still in a sensitive or sensitive decline stage. Nine populations produced different degrees of resistance to quinclorac, of which six populations were low resistant and three populations were medium resistant. Nearly 50% of the tested barnyard grass populations were resistant to quinclorac, most of which were low resistant or medium resistant. The resistance level was generally low.

Key words: Echinochloa grass, quinclorac, sensibility, Sichuan province

CLC Number:

S481.4

ZHU Jian-yi, ZHENG Shi-jun, PU Po, ZHAO Hao-yu, LIU Sheng-nan, YANG Xiao-rong, XIANG Yun-jia, ZHOU Xiao-gang. Sensibility of Echinochloa grass to quinclorac in the rice planting areas in Sichuan province[J]. HUBEI AGRICULTURAL SCIENCES, 2020, 59(14): 88-90.

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