Changes in P forms and fractions due to the addition of stover and biochar to growing crops in soils amended with stover and its biochar

Introduction To comprehend soil P transformation and crop uptake, it is necessary to understand how the long-term substitution of mineral fertilizers with stover or biochar affects properties forms. However, effects large-scale continuous application on forms fractions response uptake by corn are largely unknown. The purpose this study was investigate role its in variation Hedley-P fractions. Methods A five-year field experiment brown carried out using following treatments: non-fertilizer (CK), chemical fertilizer (NPK), + (SNPK), (CNPK). Hedley fractionation 31P nuclear magnetic resonance spectroscopy were used determine compounds. Results discussion greatest increases occurred during CNPK treatment, specifically orthophosphate Resin-P, coincided total inorganic On other hand, organic accumulation found be highest SNPK as inositol hexakisphosphate diester accumulation. Treatments significantly increased adenosine monophosphate DNA. no difference between NaHCO3-Pi NaOH-Pi NPK, SNPK, treatments. Decreasing partially replacing may increase degrading applied multiplying