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Composted sawdust as a carrierfor Bradyrhizobium,Rhizobium and Azospirillum in crop inoculation
Authors:Kostov  O  Lynch  JM
Institution:(1) N. Poushkarov Institute of Soil Science and Agroecology, 7 Chosse Bankya, Sofia, 1080, Bulgaria;(2) School of Biological Sciences, University of Surrey, Guildford, Surrey, GU2 5XH, UK
Abstract:Sawdust was composted by inoculation with a cellulose-decomposing fungus (Cephalosporium sp.) and an N2-fixing bacterium (Azospirillum brasilense). The product was investigated as a possible carrier for Bradyrhizobium, Rhizobium and Azospirillum. The simple technology and composition of the carrier supported good growth and survival of the investigated strains. Yield increases following crop inoculation with the carrier containing the Bradyrhizobium/Rhizobium/Azospirillum mixture were observed with soybean (34–62%), groundnuts (4–39%), lucerne (24–82%) and a grass mixture of bird's foot trefoil and ryegrass (20–21%).
Keywords:Azospirillum  Bradyrhizobium  compost  dinitrogen fixation  inoculant  Rhizobium
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