St. Johns County

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Publications

Phosphorus Dynamics and Impacts on Potato Production in Northeast Florida

Joris D. Van Zeghbroeck, Guodong (David) Liu, and Yuncong Li

Florida is one of two states (FL and CA) that produce spring potatoes, FL having the highest crop value out of any state in the country ($469.67 per ton). Due to the low phosphorus use efficiency (PUE), high rates of phosphorus (P) are applied to ensure adequate yields. This has led to a buildup of legacy P, resulting in mehlich-1 levels as high as 375 mg kg-1. These levels are significantly higher than the critical values for potatoes (25-35 mg kg-1), yet farmers still report increased yields with P applications. Several organic amendments, management practices, and new fertilizers have been shown to help increase P availability in potato cropping systems by reducing P fixation and maximizing the available P fraction throughout the growing season. New fertilizers and management strategies should be researched in the TCAA to find methods that maintain yields while reducing the environmental impact of potato cropping systems.

Related IFAS Blog Posts

ALL THINGS HOUSING IN THE CENTRAL DISTRICT.

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2023 Central District All Faculty Symposium – Family and Consumer Sciences L. Hamilton, UF/IFAS Extension Volusia County, Deland, FL, J. Rodriguez, UF/IFAS Extension Orange County, Orlando, FL, J. Anderson, UF/IFAS Extension Orange County, Orlando, FL, H. Ayers, UF/IFAS Extension Orange County, Orlando, FL, J. Gomez, UF/IFAS Extension Osceola County, Kissimmee, FL, L. Duncan, UF/IFAS Extension […]

CLOVERBUDS KNOWLEDGE OF POLLINATORS BLOSSOMS AT 4-H DAY CAMP

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2023 – Central District All Faculty Symposium – 4-H Youth Development A. Prevatt, UF/IFAS Extension, St. Johns County, Saint Augustine, FL. Situation: Today, the knowledge youth have about where their food comes from is becoming increasingly limited. This lack of knowledge can be partially blamed on the increase in population and the move from rural […]

TEEN LEADERSHIP COUNCIL CREATES A SENSE OF BELONGING

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2023 – Central District All Faculty Symposium – 4-H Youth Development J.S. Kelly, UF/IFAS Extension, St. Johns County, St. Augustine, FL and V.A. Prevatt, UF/IFAS Extension, St. Johns County, St. Augustine, FL Situation: In 2021-2022, the only members in County Council were the five officers, three of which were siblings. Officers visiting clubs to recruit […]

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Florida Counties

St. Johns County

Narrower Topics

St Johns County Soil and Water

Publications

Phosphorus Dynamics and Impacts on Potato Production in Northeast Florida

Related IFAS Blog Posts

ALL THINGS HOUSING IN THE CENTRAL DISTRICT.

CLOVERBUDS KNOWLEDGE OF POLLINATORS BLOSSOMS AT 4-H DAY CAMP

TEEN LEADERSHIP COUNCIL CREATES A SENSE OF BELONGING

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