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Dry Bean Response to Preemergence-Applied KIH-485

Published online by Cambridge University Press:  20 January 2017

Peter H. Sikkema
Affiliation:
Department of Plant Agriculture, University of Guelph, Ridgetown Campus, Ridgetown, Ontario, Canada N0P 2C0
Christy Shropshire
Affiliation:
Department of Plant Agriculture, University of Guelph, Ridgetown Campus, Ridgetown, Ontario, Canada N0P 2C0
Nader Soltani*
Affiliation:
Department of Plant Agriculture, University of Guelph, Ridgetown Campus, Ridgetown, Ontario, Canada N0P 2C0
*
Corresponding author's E-mail: nsoltani@ridgetownc.uoguelph.ca

Abstract

Three field trials were conducted over a 2-yr period (2004 and 2005) at Exeter and Ridgetown, Ontario to evaluate the tolerance of eight market classes of dry beans to KIH-485 applied PRE at 210 and 420 g ai/ha. KIH-485 PRE caused as much as 67% visual injury in small-seeded and 44% visual injury in large-seeded dry beans. KIH-485 applied PRE at 420 g/ha reduced plant height up to 47% at Ridgetown and 8% at Exeter in 2004, and reduced height of brown and white bean by 15 and 19%, respectively, but had no effect on the height of the other beans in 2005. Shoot dry weight was not affected at Exeter in 2004 but was reduced by 46% at Ridgetown in 2004 and 14% at Exeter in 2005. In 2004, seed moisture content increased by 5, 6, and 12% in black, otebo, and pinto beans, respectively. Seed yield was reduced up to 27% at Ridgetown and 11% at Exeter in 2004 but was not affected at Exeter in 2005. On the basis of this research, KIH-485 PRE causes unacceptable injury in some dry bean market classes.

Information

Type
Research
Copyright
Copyright © Weed Science Society of America 

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