Weed control efficacy and biodegradation characteristics of imazethapyr

The soybean herbicide imazethapyr (2-(4,5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1H-imidazol-2-yl) -5-ethyl-3-pyridinecarboxylic acid) was evaluated in the field for weed control in soybean (Glycine max) during 1985 and 1986. Imazethapyr at 0.05, 0.07, 0.10, and 0.14 kg ai/ha was applied preplant incorporated (PPI), preemergence (PRE), or postemergence (POST). Imazethapyr controlled 90% or more smooth pigweed (Amaranthus hybridus) regardless of application method or herbicide rate. Imazethapyr control of jimsonweed (Datura stramonium) at 0.5 kg/ha was 30% better POST compared to soil applications. Imazethapyr at 0.10 kg ai/ha controlled 90% or more velvetleaf (Abutilon theophrasti) regardless of application method.

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

• Cantwell, John Robert

Contributors dc:contributor

• Liebl, Rex A.

• Agriculture, Agronomy

Statement dc:rights

• Copyright 1989 Cantwell, John Robert

Language dc:language

eng

Identifier

AAI8916220
(UMI)AAI8916220

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/21435