TITLE:
Weed Management in Kidney Bean with Tank Mixes of S-Metolachlor, Imazethapyr and Linuron
AUTHORS:
Nader Soltani, Robert E. Nurse, Peter H. Sikkema
KEYWORDS:
Biomass, Density, Herbicide Sensitivity, Injury, Kidney Bean, Tolerance, Weed Control, Yield
JOURNAL NAME:
Agricultural Sciences,
Vol.5 No.7,
June
18,
2014
ABSTRACT: Field studies were conducted in various
locations in Ontario during 2011 to 2013 to evaluate s-metolachlor,
imazethapyr and linuron applied preemergence (PRE) alone and in tankmix combination for the control of troublesome weeds
in kidney bean. S-metolachlor, imazethapyr, linuron, s-metolachlor +
imazethapyr, s-metolachlor + linuron and s-metolachlor + imazethapyr + linuron applied PRE at rates evaluated caused 3% or less
injury in kidney bean. S-metolachlor provided 87% - 91% control of
redroot pigweed, 46% - 55% control of common lambsquarters, and 96% -
97% control of green foxtail. Imazethapyr provided 93% - 96% control
of redroot pigweed, 96% - 99% control of lambsquarters and 86% - 93% control
of green foxtail. Linuron provided 82% - 98% control of lambsquarters, 82% - 99%
control of redroot pigweed and 55% - 85% control of green foxtail. The tank mixes of s-metolachlor plus imazethapyr,
s-metolachlor plus linuron, and s-metolachlor
plus imazethapyr plus linuron provided 92% - 100% control
of lambsquarters, redroot pigweed and green foxtail. Generally, kidney bean
yields reflected the level of weed control. Based on these results, tank mixes of s-metolachlor plus imazethapyr,
s-metolachlor plus linuron, and s-metolachlor plus imazethapyr plus linuron all provide an
adequate margin of crop safety and excellent control of redroot pigweed, common
lambsquarters and green foxtail in kidney bean.