• DR. GHULAM MUSTAFA

Microorganisms originate from the earth’s surface and are dispersed in nature through various agencies like air, water, rain and various other media. Soil is a very congenital home for a great variety of microorganisms including nematodes, insects and worms. The contents of resident microorganisms in soil may however depend on physical and physiochemical nature and conditions. Soil samples collected from different areas in and around Vishnu sugar mill in Gopalganj .district of Bihar were analysed for bacterial composition and population density. Species diversity and population density of soil bacteria were highly reduced at the polluted pressmud dumping sites with the presence of only three species (pseudomonas, micrococcus and Escherichia. coli) and a density of 11×105 CFU where as in moderately polluted areas around the factory revealed five species (pseudomonas, micrococcus, E. coli, bacillus and staphylococcus.) and a density of 23×106 CFU. At unpolluted and proper utilization of pressmud area away from the sugar mill seven species were obtained. They are namely – pseudomonas, micrococcus, E.coli, Bacillus, Nitrococcus, Nitrosomonas and agrobacterium with high density of 32×106 CFU. In general, they succeed in converting insoluble or unavailable materials into forms that can be used by higher plants for better yield. Key words: - Microorganisms, CFU, Soil bacteria, Pressmud, pseudomonas

Key words: - Microorganisms, CFU, Soil bacteria, Pressmud, pseudomonas

"MICROFLORA (BACTERIAL) ANALYSIS OF SOIL SAMPLES COLLECTED AROUND VISHNU SUGAR MILL OF GOPALGANJ DISTRICT BIHAR & ROLE OF PRESSMUD IN SOIL FERTILITY.", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 2, page no.551-554, February-2019, Available :http://www.jetir.org/papers/JETIR1902C79.pdf

"MICROFLORA (BACTERIAL) ANALYSIS OF SOIL SAMPLES COLLECTED AROUND VISHNU SUGAR MILL OF GOPALGANJ DISTRICT BIHAR & ROLE OF PRESSMUD IN SOIL FERTILITY.", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 2, page no. pp551-554, February-2019, Available at : http://www.jetir.org/papers/JETIR1902C79.pdf