Abstract
Population of arbuscular mycorrhizal fungi (AMF) in soil in terms of spore was assessed for two land use patterns, a 5-year fallow (5YrF) of shifting cultivation and a homestead (HTD) area of Karbi-Anglong District, Assam. The infective AMF propagules were also determined by Most Probable Number (MPN) pot culture technique growing Maize and compared with a Natural Forest (NF) of about 250 years old. Spore number was lowest in HTD soil with three species of Glomus, 5YrF soil found to contain 6 species belonging to the genera Acaulospora, Gigaspora and Glomus and the NF soil contained 4 species of genera Glomus and Gigaspora. Infective AMF propagules as found in the pot experiment were lowest at HTD site soil, whereas the same were highest in NF soil. Significantly higher shoot biomass was observed at 10-4 dilution of AMF inoculum collected from all the sites. Reduction in root length colonization in Maize was observed at higher dilutions in the pot with inoculum from HTD site.
Published Version
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