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The effect of endosulfan at normal residue level (1 and 10 ppm) and elevated level (100 ppm) on microbial biomass and enzymatic activities of a tropical alfisol was studied. Dehydrogenase, Fluorescein diacetate hydrolase, acid phosphatase, aryl sulphatase activities and microbial biomass of the soil increased by 2.4, 1.7, 1.4, 1.8 and 3.7 times, respectively by the 14th day of incubation with 1 ppm endosulfan, indicating the possible involvement of soil microorganisms and their enzymes in degradation of endosulfan. Soil nitrogenase activity decreased by 8.0 times by the 14th day of application of 1 ppm endosulfan, suggesting that endosulfan or its metabolites may pose toxicological threat to nitrogen fixers in soil.

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Atri NS and Lata 2013 -Studies for culturing and cultivation of Lentinus cladopus Lév. Mycosphere 4(4), 675-682, Doi 10.5943/mycosphere/4/4/3 AbstractIn this paper the results of the vegetative growth of Lentinus cladopus Lév. on twelve solid media and eleven liquid media and reproductive growth on lignocellulosic substrates have been presented. Malt Extract Agar medium (MEA) supported the best mycelial growth from amongst the solid media evaluated while the vegetative growth on Malt Broth (MB) was maximum amongst the liquid media screened for the purpose. L. cladopus when grown on different lignocellulosic substrates including wheat straw, paddy straw and their 1:1 mixture gave 33.35 % biological efficiency on 1:1 mixture of wheat straw and paddy straw, which was best as compared to 31.66 % biological efficiency obtained on wheat straw and 12.76 % biological efficiency obtained on paddy straw.