Differential susceptibility of Iowa waterhemp (Amaranthus tuberculatus) populations to 2,4-D, dicamba, and glufosinate

被引：3
|
作者：
Hamberg, Ryan C. [1 ]
Yadav, Ramawatar [1 ]
Owen, Micheal D. K. [1 ]
Licht, Mark A. [1 ]
机构：
[1] Iowa State Univ, Dept Agron, Ames, IA 50011 USA
来源：
CANADIAN JOURNAL OF PLANT SCIENCE | 2023年 / 103卷 / 06期
关键词：
corn; herbicide resistance; probability-based survey; soybean; HERBICIDE RESISTANCE; SAUER;
D O I：
10.1139/cjps-2023-0081
中图分类号：
S3 [农学（农艺学）];
学科分类号：
0901 ;
摘要：
Multiple herbicide-resistant waterhemp (Amaranthus tuberculatus (Moq.) J.D. Sauer) has limited herbicide options for Iowa row crop production. Soybean (Glycine max (L.) Merr.) cultivars and corn (Zea mays L.) hybrids resistant to 2,4-D, dicamba, and glufosinate have provided more herbicide options for waterhemp management. A probability-based survey of Iowa fields was conducted in fall 2019 wherein waterhemp seeds were collected and their susceptibility to 2,4-D, dicamba, and glufosinate was determined. The average survival of all populations treated with 1x 2,4-D, dicamba, and glufosinate was 17%, 5%, and 4%, respectively. Seven percent of treated populations exhibited & GE;50% survival to 1x rates of 2,4-D.
引用
收藏
页码：595 / 599
页数：5
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