Challenges in developing reliable phosphorus predictive models: Unpredictable release under soil redox changes.

ABSTRACT: Phosphorus (P), crucial for plant nutrition, is unevenly distributed in the Earth's crust, necessitating its supplementation in agriculture through fertilizers. However, excessive use can lead to water pollution. Our research focuses on the P adsorbing complex, investigating P release due to flooding, using 12 well-characterized soils with contrasting properties. Our research measures directly the P-adsorbing complex using adsorption/desorption isotherms. We observed that the P concentration in the solution -sufficient to prevent desorption yet low enough to avoid further sorption by the soil- decreases when the soil undergoes complete reduction (anoxia). When grouped by similarity, calcareous soils exhibit higher maximum P adsorption capacities (X_max) under alternating reducing

SUBMITTER: Saiano F 

PROVIDER: S-EPMC11629194 | biostudies-literature | 2024 Dec

REPOSITORIES: biostudies-literature