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Weed Control with Roundup Ready Cotton in Alabama

M.G. Patterson, C.D. Monks, R.W. Goodman and D. Delaney


 
ABSTRACT

Weed control systems for Roundup Ready cotton were evaluated in field trials on Alabama Agricultural Experiment Stations located at Fairhope, Prattville, Belle Mina, and Headland, Alabama in 1996. Cotton was planted from late April to early May depending on the location. Weeds present in different trials included the annual grasses large crabgrass and Texas panicum, and the annual broadleaf weeds pitted and entireleaf morningglory, common cocklebur, sicklepod, and velvetleaf. Systems varied from traditional soil-based residual herbicide programs to total post-emergence programs using Roundup Ultra only as well as mixtures thereof. Treatments were applied to plots which were 4 rows wide and 30 ft long. All trials were conducted using conventional tillage culture with three replications of each system. Herbicides were applied in 15 gallons of spray solution per acre using tractor mounted equipment. Data obtained included visual crop injury and weed control ratings on a scale of 0 to 100 where 0 = no injury or control and 100 = crop death or total control, and seed cotton yields.



Reprinted from Proceedings of the 1997 Beltwide Cotton Conferences pg. 788
©National Cotton Council, Memphis TN

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Document last modified Sunday, Dec 6 1998