Thursday, January 11, 2007 - 3:45 PM

Efficacy and Economics of Spring Burndown Programs for Glyphosate-resistant Horseweed Control

D.H. Poston, T. W. Eubank, V. K. Nandula, D. B. Reynolds, D. R. Shaw, H. R. Robinson, R. Coleman, and T. Evans. Mississippi State University, 82 Stoneville Rd, P.O. Box 197, Stoneville, MS 38776

Studies were conducted to evaluate glyphosate-, glufosiate-, and paraquat-based herbicides programs for control of glyphosate-resistant horseweed. Nonselective herbicides were applied alone or mixed with dicamba, diuron, flumioxazin, or prometryn. Glyphosate + flumioxazin + dicamba was included as a standard and a nontreated control was used. All treatments were evaluated as a stand alone burndown treatment and with a followup glufosinate burndown at planting. Glufosinate applied at planting as a followup burndown resulted in better horseweed control and increased cotton yields with all treatments except glyphosate + dicamba, glufosinate + dicamba, and glyphosate + dicamba + flumioxazin.

Recorded presentation