Tuesday, November 6, 2007
164-3

Post-Emergent Herbicide Selection for Okra Oilseed Production.

Frederick Iutzi and Winthrop Phippen. 145 Knoblauch Hall, 1 University Circle, Western Illinois Univ., Western Illinois University, Dept. of Agriculture, Macomb, IL 61455-1390

Okra (Abelmoschus esculentus) seed has garnered attention for its potential as a livestock feed, particularly in light of possible threats to soybean (Glycine max) productivity.  While established weed control systems exist for okra vegetable production in the Southern USA, information is lacking on management tools for oilseed production in the North Central region. A number of promising post-emergent herbicides were evaluated for crop injury and effects on oilseed and biomass yield.  Fomesafen, imazaquin, mesotrione, nicosulfuron, and pyridate were compared at single application rates.  In a separate study, mesotrione and pyrithiobac-Na were each evaluated at three different application rates.