Author(s):

Shyamrao Kulkarni, Satyanarayana Rao, Desai BK, Mahadevaswamy, Basavaneppa MA, Bhat SN and Yogeesh NL

Abstract: The experiment on “Studies on status of soil microbial population in foxtail millet – Melia dubia based agroforestry system under organic nutrient management practices” was conducted for two years on farmer’s field at Santhekallur village of Raichur district. There were eleven treatments with three replications, laid out in completely randomized block design. The treatments consisted of application of no organic manure (control), FYM equivalent to 100 per cent RDN, FYM (50%) + Vermicompost (50%) and FYM (50%) + Poultry manure (50%) equivalent to 100 per cent RDN alone and in combination with foliar spray of 3.0 per cent panchagavya and 5.0 per cent vermiwash at 30 and 45 DAS and foliar spray of 3.0 per cent panchagavya at 30 DAS alternated with 5.0 per cent vermiwash at 45 DAS. Microbial population viz., bacteria, fungi and actinomycetes were assessed in soil under foxtail millet- Melia dubia based agroforestry system as influenced by organic nutrient management practices. At 60 DAS, in pooled data, FYM + poultry manure + panchagavya alternated with vermiwash spray recorded significantly higher bacterial (47.11 106 CFU g^-1 of soil), fungal (33.80 104 CFU g^-1 of soil) and actinomycetes population (35.14 103 CFU g^-1 of soil) when compared with no organic manurial treatment (28.45 106 CFU g^-1 of soil, 20.64 104 CFU g^-1 of soil and 22.64 103 CFU g^-1 of soil, respectively). Similar trend was followed at harvest with decrease in population of all above microorganisms.

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