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Nitrogen Release from Polymer‐Coated Urea: Effect of Seasons and Growing Degree‐Days
Author(s) -
ElHout Nael M.,
Fountain Jeremy W.
Publication year - 2021
Publication title -
crops and soils
Language(s) - English
Resource type - Journals
eISSN - 2325-3606
pISSN - 0162-5098
DOI - 10.1002/crso.20098
Subject(s) - urea , nitrogen , nutrient , coated urea , controlled release , degree (music) , zoology , environmental science , field experiment , agronomy , chemistry , horticulture , biology , ecology , biochemistry , physics , organic chemistry , acoustics , pharmacology
Controlled‐release nitrogen (CRN) fertilizers are designed to gradually release N at rates that closely match the N demand by plants while potentially reducing N losses to the environment. Polymer‐coated urea (PCU) is the most widely used CRN. Actual N release patterns in the field are expected to be influenced by differences in weather conditions during different times of the year. Six field trials were carried out to estimate and model N release from PCUs during different times of the year (seasons) and to investigate a possible relationship that may exist between N release from PCU fertilizers and growing degree‐days and whether such a relationship could be used as a reliable predictor of N release under field conditions. Earn 1 CEU in Nutrient Management by reading this article and taking the quiz at www.certifiedcropadviser.org/education/classroom/classes/943 .

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