Abstract
AM spore number of Ricinus communis L. and percent root colonization do not correlated with each other. Except in sulikatti, Khannur and Dundur places. 97 per cent of plants showed AM fungal dependency. Organic matter of the collected soil do not cause varied distribution of spores. Altogether thirty six AM fungal spores were recovered from 879 soil samples in twenty locations. Soil samples comprised with ten indigenous AM fungal species, Acaulospora spinosa , Gigaspora scrubiculata , Glomus geosporum , Glomus macrocarpum , Glomus mosseae , Glomus multicole , Glomus leptonicum , Sclerocystis dussi , Glomus geosporum and Scutellospora nigra . Highest spore count was noticed from (306-334) in 50g soils, of Ajjapur, Garag Byalhal and Basapur (2). The lowest number of spores (127-188/50g soil) was recorded in the soil samples of Navalagund Takadhonalli, kusagol, Khanapur and Kamdoli. It was observed that Glomus is dominant among the recovered AMF spores.
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