Physiological response of sulfonylurea-tolerant soybean to thifensulfuron and imazethapyr

Thifensulfuron, a sulfonylurea herbicide, and imazethapyr, an imidazolinone herbicide, inhibit acetolactate synthase (ALS) and used for weed management in soybean production. Tank mixing thifensulfuron with imazethapyr would provide an excellent weed control spectrum for soybean production in Illinois but soybean injury precludes its use. A sulfonylurea tolerant soybean (STS soybean) has been recently developed that have increased tolerance to thifensulfuron due to an insensitive ALS enzyme. This increase in thifensulfuron tolerance could allow the use of the imazethapyr plus thifensulfuron tank mix. However, an interaction between thifensulfuron and imazethapyr negates the STS trait and causes synergistic soybean injury.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Crop Sciences

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2011

Author dc:creator

• Simpson, David Michael

Contributors dc:contributor

• Stoller, Edward W.

• Agriculture, Agronomy
• Biology, Plant Physiology

Statement dc:rights

• Copyright 1995 Simpson, David Michael

Language dc:language

eng

Identifier

AAI9543726
(UMI)AAI9543726

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/20812