Managing volunteer potato (Solanum tuberosum) in field corn (Zea mays) with carfentrazone-ethyl and dicamba

被引:14
作者
Boydston, RA [1 ]
机构
[1] USDA ARS, Ctr Irrigated Agr Res & Extens Ctr, Prosser, WA 99350 USA
关键词
groundkeeper (volunteer potato);
D O I
10.1614/WT-03-21R
中图分类号
S3 [农学(农艺学)];
学科分类号
0901 ;
摘要
Volunteer potato is a perennial weed that is difficult to control in crop rotations. Field studies were conducted near Paterson, WA, in 2001 and 2002 to evaluate the control of volunteer potato with carfentrazone-ethyl and dicamba in field corn. When potatoes were not controlled corn yield was reduced 23 and 62% in 2001 and 2002, respectively. Single postemergence (POST) applications of carfontrazone-ethyl at 9 g/ha killed exposed foliage of potato, but new shoots continued to emerge both years and reduced corn yield in 2002. The most effective treatments tested were a single mid-posternergence application of carfentrazone-ethyl plus dicamba (9 + 280 g/ha), two applications of carrentrazone-ethyl alone at early postemergence and late postemergence, and three POST applications of carfentrazone-ethyl, which controlled volunteer potato 77 to 87% in early June, reduced weight of tubers produced by 76 to 96% compared with nontreated checks, and prevented corn yield loss compared with hand-weeded checks. Herbicide treatments reduced potato tuber weight more than tuber number.
引用
收藏
页码:83 / 87
页数:5
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