Quantifying nitrogen release behavior of enhanced efficiency fertilizers in rainfed cotton through field‐based and combustion methods
Year: 2026
Type: article
Abstract: The effectiveness of enhanced efficiency nitrogen fertilizers (EENFs) depends on how well the nitrogen (N) release synchronizes with crop demand. A 2‐year (2024–2025) mesh‐bag study was conducted to quantify N release from six N fertilizer sources under field conditions. The release trajectories were well described by three‐parameter logistic model ( R 2 > 0.94). By 63 days after fertilization, urea + polymer‐coated urea (PCU 43‐0‐0) in 50:50 ratio released the greatest proportion of total N, reaching 91% in 2024 and 86% in 2025. In contrast, PCU (42‐0‐0) released 46% in 2024 and 57% in 2025, whereas PCU (41‐0‐0) released the lowest across both seasons (37% in 2024 and 34% in 2025). The N release from the field‐based method was significantly correlated with the combustion method ( r = 0.958, p < 0.001). The findings of this study provide field‐based information for selecting EENF source with a release pattern that better aligns with cotton ( Gossypium hirsutum L.) N demand.
DOI: 10.1002/ael2.70089
Institution: University of Florida
Language: English
Subfield: Biomedical Engineering
Field: Engineering
Domain: Physical Sciences
SDG: Zero hunger
Open Access status: gold
Estimated APC paid: $1,900
Award: G3302317345
OpenAlex ID: W7171845592