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Cotton Yield Response to the Application of Organic and Inorganic Nitrogen

A.S. Negatu, K.C. Reddy, C.H. Burmester


The increased concentration of poultry industries in certain parts of the Southeastern United States is leading to serious poultry waste disposal problems. As part of on-going safe litter disposal studies, fresh and composted poultry litter with and without a nitrification inhibitor, carboxymethyl pyrazole (CMP), were applied to cotton (Gossypium hirsutum cv DPL-51) to provide 45N, 90N, or 135N kgha-1. The study was conducted in 1994 at the Tennessee Valley Sub-station, Belle Mina, Alabama. All sources of nitrogen increased cotton lint yields significantly from 1280 kgha-1 in the control plot. CMP had no effect on cotton yield. Fresh poultry litter (1650 kgha-1) improved cotton yields significantly more than urea (1520 kgha-1) or composted poultry litter (1520 kgha -1). These results indicate that fresh poultry litter can be substituted for inorganic N sources in cotton production in the Tennessee Valley Region.

Reprinted from Proceedings of the 1996 Beltwide Cotton Conferences pp. 1356 - 1358
©National Cotton Council, Memphis TN

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Document last modified Sunday, Dec 6 1998