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  • 1 Institut für Pflanzenbau in den Tropen und Subtropen Grisebach str. 6, D-37077 Göttingen, Germany
  • 2 Division of Microbiology, Indian Agricultural Research Institute New Delhi 110012, India
  • 3 National Agricultural Cooperative Marketing Federation of India Ltd. 51-A, Sector F, Sanwar Road, Indore 452003, M.P., India
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A pot experiment was conducted to study the response of barley (Hordeum vulgare) to inoculation with Glomus fasciculatum in unsterilised organic matter amended soils on the colonization of barley roots by (V)-Arbuscular mycorrhizal (AM) fungi and other rhizosphere microflora. The populations of bacteria, fungi and actinomycetes were higher in amended than in control soils. Paddy straw compost (PSC) stimulated all three groups of organisms (bacteria, fungi and actinomycetes) more than city compost (CC). The fungal and actinomycetes populations decreased with increasing plant age. The effect was more pronounced in the rhizosphere of paddy straw-amended soils. The mycorrhizal spore count and the colonization of barley roots by (V)-AM were more pronounced in soils amended with PSC than in those amended with CC.

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