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Chinese Journal of Biological Control ›› 2021, Vol. 37 ›› Issue (3): 518-524.DOI: 10.16409/j.cnki.2095-039x.2021.01.007

• RESEARCH REPORTS • Previous Articles    

Sensitivity of Two Broadleaf Weeds Xanthium sibiricum and Chenopodium album to Glufosinate in Corn Fields

JIA Fang, CHEN Jingchao, CUI Hailan, LI Xiangju, XIE Jiajian, YU Huilin   

  1. Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
  • Received:2020-05-06 Published:2021-06-16

Abstract: Xanthium sibiricum and Chenopodium album are two common broad-leaf weeds that seriously affect corn growth and yield. Sensitivity level of X. sibiricum and C. ablum to glufosinate was measured using the whole plant bioassay method to provide basic data for weed control in fields planted with genetically modified glufosinate-resistant corn. GR50 values of six X. sibiricum populations ranged between 37.54 and 111.93 g a.i./ha, with an average of 64.25 g a.i./ha, indicating that all the X. sibiricum populations were sensitive to glufosinate. Among the 29 population of C. album, GR50 values ranged between 24.55 and 106.75 g a.i./ha, averaging at 60.43 g a.i./ha. All the GR50 values in C. album populations were lower than 405 g a.i./ha (half of the recommended dose). Thus, C. album populations also exhibited high sensitivity to glufosinate. However, the average value of GR50in C. ablum populations from Northeast area (66.93 g a.i./ha) was higher than that of C. ablum populations from Huanghuaihai (53.47 g a.i./ha).

Key words: glufosinate, Chenopdium ablum, Xanthium sibirium, sensitivity

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