Cotton Response to Long Terrm Tillage Systems on a Silt Loam Soil in Mississippi

G.R. Tupper, J.G. Hamill, and R.C. Pringle, III


 
ABSTRACT

Fourteen different combinations of tillage systems were studied on a silt loam soil during a six-year study. The tillage practices included in the study were various combinations of disking, subsoiling, and chiseling. Also, disk applications of trifluralin were evaluated. Yields obtained from each of the treatments were compared to a check which represented a conventional cotton production system without deep tillage. Each production system was evaluated and ranked on the basis of increased yields and increased returns above the costs of performing selected tillage and weed control practices. Fall disking prior to subsoiling, increased lint yields by 92 lb/A over the check and resulted in the highest increase in net returns (ranked first) per year ($41.68/A) for the tillage operations performed. The most preplant tillage (disk, subsoil, chisel, disk, trifluralin, and disk) produced a 31 lb/A increase in lint yields each year. This yield increase did not cover tillage and preplant incorporated herbicide costs, thus, resulting in a net loss in returns per year ($-12.36/A) for the tillage operations performed.



Reprinted from 1987 Proceedings: Beltwide Cotton Production Research Conferences pp. 492 - 495
©National Cotton Council, Memphis TN

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Document last modified Sunday, Dec 6 1998