Soil Microorganisms and Plant Growth

actinomycetes activity agar Agricultural Alnus amino acids anaerobic antibiotics antigens Aspergillus Azolla Azospirillum Azotobacter Bacillus bacteria bacterium bacteroids Beijerinckia Biological Nitrogen Fixation blue-green algae carbon cells chemical clover compounds containing crop Delhi disease Distilled water effect endophyte enzyme factors fertilizer fix nitrogen flask Frankia fungal fungi Fusarium genera genetic Gram-positive herbicides heterocysts host hyphae IBH Publishing Indian infection thread inoculation isolated japonicum known leghaemoglobin legumes medium meliloti microbial Microbiol Microbiology microorganisms mycorrhiza N₂ nif genes nitrate nitrogen fixation nitrogen-fixing nitrogenase nutrients nutrition organic matter Oxford and IBH pathogens Penicillium pesticide phosphate phosphorus phyllosphere plant growth plasmid Plate production protein Pseudomonas pure cultures rhizobia Rhizobium rhizosphere rice root exudates root hair root nodules root system seed seedlings soil microorganisms soybean species spores sterilized strains Streptomyces studies Subba Rao substances substrate sulphur surface symbiosis symbiotic technique temperature tissue trifolii Trifolium tube