Yellow nutsedge control in wine grapes with rimsulfuron, glyphosate and imazosulfuron

摘要

A field study was established to evaluate rimsulfuron, imazosulfuron and glyphosate applications for controlling yellow nutsedge (CYPES) in an established merlot vineyard located near Lodi, California. Plots were 6 by 21 ft arranged in a randomized complete block design with three replications All herbicide treatments were applied with a CO_2 pressurized backpack sprayer calibrated to deliver 36 gpa (Table 1) Herbicide treatments were applied on January 26 and April 3, 2007. Existing weeds were controlled with a burndown herbicide; oxyfluorfen or glufosinate-ammonium. Yellow nutsedge control was visually evaluated March 22, April 19, May 31 and June 20, 2007 (Table 2). Grapes were harvested on August 30, 2007.