Methods for Measuring Nitrogen Release from Controlled-Release Fertilizer Used for Vegetable Production
A plastic bag filled with sand and a CRF equivalent to 0.035 oz nitrogen for use in the plastic bag method.
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How to Cite

Ozores-Hampton, Monica, and Luther C. Carson. 2014. “Methods for Measuring Nitrogen Release from Controlled-Release Fertilizer Used for Vegetable Production: HS1227/HS1227, 8/2013”. EDIS 2014 (1). Gainesville, FL.


Enhanced-efficiency fertilizers are a group of fertilizers that reduce the risk of nutrient loss to the environment and subsequently increase fertilizer use efficiency. This increase may be accomplished through maintaining nutrients in the root zone by physical barriers, reduced solubility, or retaining nutrients in a less leachable form. This 7-page fact sheet examines laboratory, growth chamber, greenhouse, and field methods for measuring nitrogen release in controlled-release fertilizers. Written by Monica Ozores-Hampton and Luther C. Carson, and published by the UF Department of Horticultural Sciences, August 2013.

HS1227/HS1227: Methods for Measuring Nitrogen Release from Controlled-Release Fertilizer Used for Vegetable Production (
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