Work

Comparative Evaluation of Conventional Fertilizers and Slow-Release Fertilizers: An Integrative Revie

Year: 2025

Type: article

Abstract: Conventional nitrogen (N), phosphorus (P), and potassium (K) fertilizers have been essential for global crop production, yet their rapid solubility often results in low nutrient-use efficiency (NUE) and significant environmental losses. Slow-release fertilizers (SRFs), including controlled-release fertilizers (CRFs), were developed to synchronize nutrient availability with crop demand, thereby improving NUE and reducing losses via leaching, volatilization, and greenhouse gas emissions. This review synthesizes empirical findings from 2000–2024 comparing conventional fertilizers (CFs) and SRFs/CRFs across nutrient dynamics, crop yield and quality, environmental impacts, technological advances, and economic considerations. Evidence shows SRFs can increase NUE by 15–50%, reduce nitrate leaching by ~36%, reduce ammonia volatilization by up to 80%, and maintain or enhance yields in many crops. However, challenges such as high production cost, variability in release rates, limited multi-year data, and concerns regarding polymer residues constrain adoption. Future research must focus on biodegradable coatings, modeling release kinetics under field conditions, long-term soil health impacts, and policy frameworks to incentivize sustainable nutrient management. Overall, SRFs represent a promising tool in sustainable agriculture but not a complete substitute for integrated soil fertility strategies.

Source: Alexandria Science Exchange Journal

DOI: 10.21608/asejaiqjsae.2025.474294

Authors: Fatma K. Sherif, Hoda A. Argeaa, Bassem A. Amer

Institution: Alexandria University

Language: English

Topic: Polymer-Based Agricultural Enhancements

Subfield: Biomedical Engineering

Field: Engineering

Domain: Physical Sciences

SDGs: Zero hunger, Responsible consumption and production, Climate action

Open Access status: gold

Estimated APC paid: $100