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Relationship of Field Scale Nitrogen Variability to Soil Properties and Remotely Sensed Characteristics

H. J. Buscaglia, J. J. Varco, J. M. Thompson and M. R. Seal


Spatial distribution of soil available nitrogen was related to total soil nitrogen, total soil carbon, % sand, % clay, Normalized Difference Vegetation Index (NDVI), plant height and yield. Soil samples were taken from 72 points on a 1 acre grid in an irrigated cotton (Gossypium hirsutum)field. Field areas with greater clay content had lower available nitrogen, shorter plants, and greater total soil nitrogen and carbon. Normalized Difference Vegetation Index was positively correlated with soil available nitrogen, plant height, and yield.

Reprinted from Proceedings of the 1999 Beltwide Cotton Conferences pp. 1282 - 1283
©National Cotton Council, Memphis TN

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Document last modified Monday, Jun 21 1999