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Phosphorus (P) is the second most important nutrient in crop production but is often found in relatively low amounts in native soils. Decades of fertilizer application have led to P enrichment of most North Carolina agricultural soils. Excess soil P that leaves agricultural fields via runoff and drainage can cause algal blooms in water resources that lead to impaired drinking water quality and can limit recreational activities. Maintaining adequate soil P levels for crop growth can reduce P runoff, save money, and protect the environment
Nutrient analysis of soil and plant tissue should be an integral part of any tree crop management plan. While this publication was designed for Christmas tree growers, the principles outlined here may be easily applied to other tree crops.
