Author:
Bruce Joseph A.,Kells James J.
Abstract
Quackgrass is a serious weed problem in the northern United States and southern Canada. Field experiments were conducted in 1990 and 1991 to examine the effect of herbicide rate, application timing, quackgrass growth stage, and cultivation on quackgrass control with nicosulfuron and primisulfuron in corn. Nicosulfuron (35 g ai/ha) and primisulfuron (40 g ai/ha) each provided 84% or greater control of two-leaf plants and 93% or greater control of four-leaf quackgrass plants. Sequential applications of both nicosulfuron and primisulfuron provided greater season-long control than single applications of the same rate on two-leaf but not four-leaf quackgrass. Cultivation 10 d after nicosulfuron or primisulfuron application often increased early-season control, but by corn harvest few differences were observed. Postemergence (POST) applications of nicosulfuron and primisulfuron provided at least 88% control, compared with 66 to 86% from an early preplant application of glyphosate. Corn yields were similar regardless of the quackgrass control program.
Publisher
Cambridge University Press (CUP)
Subject
Plant Science,Agronomy and Crop Science
Reference25 articles.
1. Quackgrass (Agropyron repens) interference on corn (Zea mays);Young;Weed Sci.,1984
2. Efficacy of CGA-136872, DPX-V9360, and DPX-79406 on quackgrass [Agropyron repens (L.) Beauv.] control in corn;Yenish;Weed Sci. Soc. Am. Abstr.,1990
3. Quackgrass control in field crops;Wyse;Proc. North Cent. Weed Control Conf.,1976
4. DPX-V9360 performance on difficult to control grass species in corn;Reinhart;Proc. North Cent. Weed Sci. Soc.,1989
5. Quackgrass (Agropyron repens) Control with Fall-Applied Glyphosate and Other Herbicides
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