Abstract
Good management of N is critical for improved citrus production and environmental sustainability on Florida sandy soils. Thus, understanding N movement in the root zone is important to devise appropriate nutrient management strategies. Field experiments were conducted on citrus at two sites in Florida to: (i) determine the soil moisture distribution in the irrigated and unirrigated zones as a function of time and depth; (ii) determine NH4+–N and NO3−–N distribution patterns in the irrigated and unirrigated zones as a function of depth, lateral distance, and fertilizer application method; and (iii) determine NH4+ sorption in a fertilizer mixture due to cation exchange. Earn 1 CEU in Soil & Water Management by reading this article and completing the quiz at www.certifiedcropadviser.org/certifications/self‐study/655.
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