Identification of Phosphate Sorption-Desorption and Accumulation Characteristics to Reduce Environmental Consequences

• DOI: 10.1080/00103624.2022.2137182
• Publication Date: 2022-10-31T06:27:05Z
• Authors: Mayakaduwege Amod...; Yusop Mohd Rafii; Roslan Ismail; Liyana Rallage Ma...; Minninga Geethika...; Mohamed Musa Hanafi
• Keywords: Inceptisol; Ultisol; Entisol; Andisol

Phosphorus (P) enrichment of soil due to the intensification P fertilizer usage in crop production has resulted eutrophication and serious economic consequences. Further, rapidly decreasing reserves have renewed interest improving more sustainable management through monitoring diverse reactions contrasting soils. Therefore, study was conducted (i) characterize sorption desorption capacities related properties (ii) determine added availability distribution among different pools over period concerning capacity Three soils, namely Ultisols, Entisols, Inceptisols, were equilibrated with a series concentrations sorption–desorption using Langmuir isotherms. These soils subjected sequential extraction procedure fractions after incubating for 120 days. Maximum Inceptisols 1,428.6, 1,666.7, 3,333.3 mg kg−1 soil, respectively. by Ultisol about 1.7- 4.2-fold higher than Entisols Inceptisols. The maximum showed negative significant correlation pH (r = −0.88), whereas des % positive 0.98). Exchangeable Al, Al-ox, Al-cD, Fe-ox %. During incubation, 93.3% became non-extractable contrast only 64.3% Ultisols. A greater increase labile NaHCO3-P fraction found Ultisols from 66.96 135.6 mg/kg at end incubation. Accordingly, lower consist pools, which indicates risk loss soil.