Demonstration of phosphorus fertilizer management for potato grown in a calcareous soil

Yuncong Li, Steve O'Hair, Rao Mylavarapu, Teresa Olczyk, Mary Lamberts


Recent studies have shown no yield responses of potato to phosphorus fertilizer application in the Miami-Dade County area. The objective of this trial was to evaluate the effects of reduced phosphorus fertilizer rates on potato yield and quality. The trial was conducted in a commercial potato field with a Biscayne marl soil with 3 rates of P fertilizer (0, 50 and 100% of grower rates). Phosphorous fertilizer application neither significantly increased AB-DTPA extractable P in the soil, nor affected the concentration of leaf P, yield and quality of potato.

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Proc. Fla. State Hort. Soc.     ISSN 0886-7283

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