Author(s): P. KUMARI, G. K. MATHANKER, B. SHARMA AND B. R. MAURYA

Abstract: The organic sources FYM, sludge, poultry manure, fresh cow dung and leaves & twigs of Lantana camera have potential as soil amendments and can augment microbial population and enzyme activities. Sludge has the maximum capacity to increase population of fungi (21cfu×104 /g soil) and actinomycetes (30cfu×105/ g soil) both at 45 DAI followed by FYM. FYM exibits their potential to raise bacterial population (47 cfu×106 /g soil) at 45 DAI. Sludge follows FYM in regards to bacterial population. FYM elaborates maximum dehydrogenase activity (24ìg TPF g-1 soil day -1) at 45 DAI followed by fresh cow dung. Sludge induces maximum urease activities (364 ìg urea hydrolyzed g-1 soil h-1) at 45 DAI. So far as phosphatase activity is concerned, it shows maximum under poultry manure (49mmol p-nitrophenol g-1 soil h-1) at 30 DAI followed closely by fresh cow dung (48mmol p- nitrophenol g-1 soil h-1 also at 30 DAI).

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