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Asian Journal of Plant Pathology
Year: 2011  |  Volume: 5  |  Issue: 1  |  Page No.: 37 - 45

Variation in Soil Mycobiota Associated with Decomposition of Sesbania aculeata L.

R. Kumar, A. Sinha, S. Srivastava and M. Srivastava    

Abstract: The aim of the present study was to investigate the variation in soil mycobiota involved in the decomposition of Sesbania aculeata L. in soil. Decomposition of Sesbania aculeata (Dhaincha) was studied by nylon net bag technique under experimental conditions. The colonization pattern by soil inhabiting mycobiota was studied by standard methods. Among the three methods used for isolation and enumeration of fungi, dilution plate technique recorded the highest number of fungi followed by damp chamber and direct observation method. Nutrient availability and climatic conditions influenced occurrence and colonization pattern of mycobiota. Maximum fungal population was recorded in July (48.95±0.20x104 of fungi/g oven dry litter) and minimum in June (19.78±0.20x104 of fungi/g oven dry litter). The distribution of Deuteromycetous fungi was much more (74.47%) than Zygomycetes, Oomycetes and Ascomycetes. In the early stage of decomposition Mucor racemosus, Rhizopus stolonifer, Chaetomium globosum and Gliocladium roseum were found where as at the later stages of decomposition preponderance of Aspergillus candidus, Cladosporium cladosporioides, Curvularia lunata and Aspergillus luchuensis was recorded.

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