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Natural Abundance Of Foliar 15N As An Early Indicator Of Nitrogen Deficiency In Fertilized Cotton, S. Stamatiadis, C. Christofides, C. Tsadilas, V. Samaras, James S. Schepers

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

Information on the contribution of various soil nitrogen (N) sources to plant N uptake is often needed for the implementation of sustainable or site-specific management practices in agriculture. Considering the limitations of traditional methods in meeting these needs, this study investigated the potential of leaf δ¹⁵N as an early indicator of nutrient deficiency in cotton. The spatial and temporal natural abundance of ¹⁵N was measured in the soil and leaves of a fertilized cotton field located near the village of Moschochori (Larissa, Greece). The isotopic signal of the leaves was interpreted in the context of the relative …