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Phosphorus Management Strategies for Potato Production in Florida: a Review

Phosphorus Management Strategies for Potato Production in Florida: a Review Phosphorus (P) is an essential macronutrient for potato growth and development. In Florida’s Tri-County Agricultural Area (TCAA) P is applied annually at high rates to ensure yields. This practice has led to a buildup of soil P with Mehlich-3 soil nutrient P levels as high as 475 mg/kg. Potato farmers customarily apply P fertilizers despite their soil likely already containing high levels of this nutrient. Current fertilization programs do not account for legacy P fixed by minerals in the soil making it unavailable to crops. Published articles show that soil amendments such as biochar, compost, gypsum, and humic acid could increase bioavailable P by decreasing the amount of the nutrient that is fixed to soil minerals. Cover cropping or mulching could also be beneficial. To increase bioavailable P and maximize fertilizer utilization, re-evaluation and revision of current farm practices and fertilizer recommendations for potato production in the TCAA is required. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png American Journal of Potato Research Springer Journals

Phosphorus Management Strategies for Potato Production in Florida: a Review

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References (80)

Publisher
Springer Journals
Copyright
Copyright © The Potato Association of America 2021
ISSN
1099-209X
eISSN
1874-9380
DOI
10.1007/s12230-021-09851-2
Publisher site
See Article on Publisher Site

Abstract

Phosphorus (P) is an essential macronutrient for potato growth and development. In Florida’s Tri-County Agricultural Area (TCAA) P is applied annually at high rates to ensure yields. This practice has led to a buildup of soil P with Mehlich-3 soil nutrient P levels as high as 475 mg/kg. Potato farmers customarily apply P fertilizers despite their soil likely already containing high levels of this nutrient. Current fertilization programs do not account for legacy P fixed by minerals in the soil making it unavailable to crops. Published articles show that soil amendments such as biochar, compost, gypsum, and humic acid could increase bioavailable P by decreasing the amount of the nutrient that is fixed to soil minerals. Cover cropping or mulching could also be beneficial. To increase bioavailable P and maximize fertilizer utilization, re-evaluation and revision of current farm practices and fertilizer recommendations for potato production in the TCAA is required.

Journal

American Journal of Potato ResearchSpringer Journals

Published: Dec 1, 2021

Keywords: Hasting; Efficiency; Genotype; Yield; Environment; Amendments; Spodisol; Alfisol; Mehlich-3

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