Vol. 13 No. 1
Integrated nutrient management boost the soil biological properties in rice rhizosphere
Author(s): S. KUMARI, N. CHATTOPADHYAYA, J. MANDAL AND M. SINGH
Abstract: A field experiment was carried out during kharif season in the year 2013 and 2014 in to assess the impact of Integrated Nutrient Management (INM) on soil biological properties in rice (Oryaza sativa). The experiment consists of nine treatments viz., T -rnControl, T - 100 per cent RDF, T - 50 per centRDF + 50 per cent N by green manure (GM), Trn- 50 per cent RDF + 25 perrn2 3 4rncentN by GM +25 per cent N by Vermicompost (VC), T - 50 per cent RDF+25 per cent N by (VC)+25 per cent N by Azolla T -rn5 6rn50 per cent RDF + 25 per cent N by GM + 25 per cent N by Azolla, T - 50 per cent RDF + 25 per cent N Azolla + 25 perrncent N by BGA, T - 25 per cent RDF +25 per cent N by BGA + 25 per cent N by Azolla + 25 per cent N by GM and T 25 perrn8 9rncent N by GM + 25 per cent N by VC +25 per cent N by Azolla + 25 per cent N by BGA + PSB. The results revealed anrnenhancement of total bacteria, actinomycetes, fungi and phosphate solubilizing bacteria in all stages of growth and irrespective of all the treatments in comparison with initial density of respective microorganism justifying the higher rhizosphere effect and keeping with a line of organic carbon content increment. Soil dehydrogenase, acid and alkaline phosphatase activities alongwith microbial biomass carbon also increased with the gradual growth phase of the rice plan
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