Phosphomonoesterase activity under different microbiological soil properties

Abstract

In the present work, effects of microbiological soil properties and phosphomonoesterase activity are presented. The abundances of ammonificators, fungi, actinomycetes, Azotobacter sp., cellulolytic microorganisms, microorganisms that solubilize organic and inorganic P compounds bound to Al, Fe and Ca, have been determined by the dilution method with application of selective nutrient mediums. The first five axes explaines 86% of the total variance. The first axis explains 34.6% of variance and it appears to reflect the processes of microbiological mineralization and immobilization of phosphorus. The second axis explains 25.9% of variance and reflects microbial activity and organic matter accumulation, N biomasses, Azotobacter sp. abundance and acid and alkaline PME activities. Phosphomonoesterase activity in soil depend primarily on soil organic matter and biological factors and can be used as a parameter of plants' uptake of phosphorus, especially in conditions of its low concentration in soil.