Soil phosphorus sorption properties in different fertilization systems

• Published in: Plant, soil and environment Vol. 65; no. 2; pp. 78 - 82
• Main Authors: Szara, Ewa, Sosulski, Tomasz, Szymańska, Magdalena
• Format: Journal Article
• Language: English
• Published: Prague Czech Academy of Agricultural Sciences (CAAS) 01.01.2019; Czech Academy of Agricultural Sciences
• Subjects: Binding energy; Fertilization; macronutrient; Monoculture; Organic phosphorus; Organic soils; Parameters; Phosphorus; Rye; secale cereale l; Soil fertility; Soil horizons; Soil profiles; Soil properties; Soil water; soil-phosphorus; Sorption; static experiment; Thermodynamics; Vertical distribution; vertical variability of phosphorus
• ISSN: 1214-1178; 1805-9368
• DOI: 10.17221/696/2018-PSE

The study aimed at the evaluation of the accumulation and vertical distribution of different forms of phosphorus (P) in reference to phosphorus sorption properties subject to mineral (NPK), mineral-organic (NPK + M), and organic (M) fertilisation. It was carried out in a long-term experimental field in Skierniewice (Central Poland) conducted since 1923 under rye monoculture. Total P content in the M and NPK soil profile was similar and lower than in the NPK + M soil. The content of organic P in Ap and Eet horizons of both manured soils was similar and higher than in the NPK soil. The Langmuir P sorption maximum (Smax) in the studied soils ranged from 39.7 to 90 mg P/kg, while the Freundlich P sorption coefficient aF ranged from 6.9 to 41.9 mg P/kg. Higher variability of parameters related to the binding energy from the Lanqmuir (k) and Freundlich (aF) equations was determined between soil horizons than between the fertilisation systems. Nonetheless, in M and NPK + M soils, sorption parameters aF and Smax and binding energy (k, bF) were considerably lower than in the NPK soil. The content of water extracted P in manured soils was higher than in the NPK soil.