Phosphorus Fraction Distribution in Soils of three Rice-Growing Blocks of Mayurbhanj District in Odisha State, India

Abstract

In the month of June in three distinct blocks of the Mayurbhanj district, the twenty-seven soil samples were collected from nine different rice-growing areas at three depths and analyzed. In accordance to the findings, the soils were found to have low to medium levels of organic carbon and to be moderately acidic to slightly acidic in nature. All the soil samples were under Non-saline condition of Electrical Conductivity and suitable for crops. The study found that soil pH was the main factor influencing different Phosphorus fractions, with Reductant soluble-P being the mostpredominant fraction, followed by Al-P, Fe-P, Ca-P, and Saloid-P. Al-P, Fe-P, and Ca-P were positively correlated with available Phosphorus, indicating their contribution to the soil's available Phosphorus pool. The study also found that Reductant-soluble phosphate (RS-P) was the dominant fraction that fixed and released P from the soil, proving the fixation of Phosphorus by sesquioxide in lateritic soil of Mayurbhanj district in Odisha.