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Weed Management in Conservation-Tillage Cotton-Broadcast vs. Banded Herbicide Application: Cultivations vs. Hooded Sprayer

A. Keeton, E.C. Murdock, T.D. Isgett, J.E. Toler


With emphasis on conservation-tillage crop production increasing it is necessary to develop an effective weed management program in cotton. Banded and broadcast preemergence (PRE) applications of Prowl + Cotoran followed by Staple (Early-POST) were evaluated in combination with Roundup/shielded sprayer applications and conservation-tillage cultivations made 3, 5, and 7 weeks after planting. Generally, broadcast herbicide applications were necessary for adequate weed control and maximum lint yields. No differences in weed biomass and lint yields were evident between Roundup/shielded sprayer applications and conservation-tillage cultivations. Two Roundup/shielded sprayer applications or cultivations provided greater weed control, and lower weed biomass compared the a single application. However, weed control, weed biomass, and lint yields were similar with two or three Roundup/shielded sprayer applications or cultivations.

Reprinted from Proceedings of the 1996 Beltwide Cotton Conferences pg. 1558
©National Cotton Council, Memphis TN

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Document last modified Sunday, Dec 6 1998