Effect some soil properties (organic matter, soil texture, lime) on the geochemical phosphorus fractions

Abstract

Phosphorus (P) is essential to all known life forms because it is a key element in many physiological and biochemical processes. Soil properties due to soil formation processes and land use have an impact on the availability of phosphorus in soil and on the change in geochemical fractions. The phosphorus fractions are important for assessing their soil status and understanding the soil chemistry that affects soil fertility. Taken 43 soil samples, were selected from agricultural fields of Isparta - Southeast of Turkey, to determine the availability of phosphorus and change in fractions. Relations of phosphorus fractions with soil properties were revealed by analysis of variance, Pearson correlation analysis Descriptive physicochemical analyzes and sequential phosphorus fractionation were performed in the soil. These fractions are; sodium bicarbonate (NaHCO3-P), sodium hydroxide (NaOH-P), citrate bicarbonate dithionite (CBD-P), hydrochloric acid (Ca-P), and residual (Res- P) phosphorus. The results showed that the fractionations (Ca-P, 597.05 mg kg-1) (Res-P, 259.54 mg kg-1) were high for respectively. It was determined that the fractal distribution of these fractions changed according to the land use pattern.