Nitrogen Influence on Position and Fate of Cotton Bolls

S. H. Moore, J. Caylor


Cotton (Gossypium spp.) was planted in 1990 and 1992 to determine the effect of nitrogen rate on growth and yield when produced on a Red River alluvial soil (Norwood silt loam, pH near 8.0) in central Louisiana. Seven rates of N ranging from 0 to 150 lbs/A, in 25-lb increments, were applied prior to planting in randomized complete block design. Bolls were classified as rotten, immature, open, or missing. The number of rotten bolls was small and marginally affected by N rate. The greatest potential for yield improvement appeared to be in reducing boll loss. Missing boll number at the 100 lb N rate was approximately half that of open bolls in 1990, and was double that of open bolls in 1992.

Reprinted from Proceedings of the 1994 Beltwide Cotton Conferences pp. 1547 - 1548
©National Cotton Council, Memphis TN

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Document last modified Sunday, Dec 6 1998