|Koger Iii, Clifford|
|Van Santen, Edzard|
Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: 1/1/2006
Publication Date: 1/23/2006
Citation: Saini, M., Price, A.J., Koger III, C.H., Wilcut, J.W., Miller, D., Van Santen, E. 2006. Weed control provided by residual and non-residual cotton layby herbicides [abstract]. Proceedings of the Southern Weed Science Society. p. 78. Interpretive Summary:
Technical Abstract: Field studies were conducted in four states to evaluate weed control provided by glyphosate applied alone or followed by glyphosate, glufosinate, and MSMA applied alone or mixed with different residual LAYBY herbicides. Herbicide treatments included glyphosate EPOST alone or followed by: 1) glyphosate, 2) glufosinate, or 3) MSMA alone or tank mixed with one of the following residual herbicides: a) carfentrazone-ethyl at 0.3 kg ai/ha, b) diuron at 1.12 kg ai/ha, c) flumioxazin at 0.07 kg ai/ha, d) fluometuron at 1.12 kg ai/ha, e) lactofen at 0.84 kg ai/ha, f) linuron at 0.56 kg ai/ha, g) oxyfluorfen at 1.12 kg ai/ha, h) prometryn at 1.12 kg ai/ha, or i) prometryn + trifloxysulfuron at 1.12 kg ai/ha + 10 g ai/ha. In general, at all locations, treatments containing MSMA provided lower average control compared to those containing glyphosate or glufosinate and residual herbicides applied alone provided inadequate control compared to those including a glyphosate, glufosinate, or MSMA. Overall, within 315 of 567 comparisons (55%), when a residual herbicide was added, weed control increased. With the addition of barnyardgrass at the Mississippi location, the problematic weeds at all locations were hemp sesbania and pitted morningglory.