Effect of Phytase and FYM on Soil Enzyme Activities, Microbial Population and Nutrient Availability of Non-Calcareous Soil Jadhav A.B.*, Suradkar Rahul, Taggu Barbie, Tamboli B.D., Priyanka B.1 Division of Soil Science and Agricultural Chemistry, College of Agriculture, Pune, 411 005, Maharashtra 1Present address, National Collection of Industrial Microorganisms (NCIM), National Chemical Laboratory (NCL), Pune, Maharashtra *Corresponding author (Email: abjadhav1234@rediffmail.com)
Online published on 24 August, 2017. Abstract A pot culture experiment was conducted to assess the effect of phytase and FYM levels on soil enzyme activities and nutrient availability of non-calcareous soil under soybean cultivation. The treatment consisted of four levels of phytase (0, 1200, 2400 and 3600 IU) and FYM (0, 2.5, 5.0 and 7.5 t ha−1). Enzyme activities and nutrient availability in soil was assessed at 50% flowering and harvest of soybean. It was observed that application of phytase @ 3600 IU recorded significantly higher acid and alkaline phosphatase and dehydrogenase activity at both the growth stages of soybean. Results revealed that significant interaction effect with combine application of phytase @ 3600IU and FYM @ 7.5 t ha−1 recorded higher bacterial, fungal and actinomycetes population. Combined application of phytase @ 3600 IU and FYM @ 7.5 t ha−1 recorded significantly higher available nitrogen (289.3 and 213.6 kg ha−1) and potassium (295.0 and 270.6 kg ha−1) at 50% flowering and at harvest of soybean, respectively. However, in case of phosphorus (P), at 50% flowering significantly higher available P was recorded with phytase @ 3600 IU + 7.5 t ha−1 (23.9 kg ha−1). Reduction trend obtained for calcium carbonate content from 4.24 to 3.68% at 50% flowering and from 4.20 to 3.60% at harvest stage was obtained with the application of phytase @ 3600 IU. This study suggest that application of phytase in combination with manure substantially improves soil biological activities as well as better nutrient supply to crop. Top Keywords Soybean, phytase, non-calcareous soil, soil enzymes, microbial population, nutrient availability. Top |