Soil Health Improvement through Biofertilizers

Contents: Preface. 1. Symbiotic Nitrogenous biofertilizer. 2. Free-living Nitrogen fixing bacteria. 3. Azospirillum Biofertilizer. 4. Phosphorus solubilizing microorganisms. 5. Mycorrhizae as bio-fertilizer. 6. Development of biofertilizer industry. Index.

The book on improve soil health through N-, P- fixing biofertilizers deals with first chapter on ‘Symbiotic nitrogenous biofertilizer’ in which rhizobia are discussed in detail, as their methodology, field tests, measurement of biological-fixation culture maintenance have been explained. In second chapter ‘Free living Nitrogenous bacteria’ for instance Azotobacter is elaborated, as its characteristics, distribution, synthesis, maintenance and culturing and effect on plants are discussed. In third chapter occurrence, geographic distribution and crop productivity of ‘Azopirillum biofertilizer’ is elaborated. The  chapter four deals with ‘Phosphorus solubilizing micro-organisms’ and explains proton enzyme theory, microbial inoculation and crop yields, effect of pyrites in rock solubilization etc. The chapter five focus on ‘Mycorrhizae as biofertilizer’ by classifying ectomycorrhiza, endomycorrhiza, ectendo-mycorrhiza Arbutoid mycorrhiza, Monotropoid mycorrhiza, Orchidaceous mycorrhiza, Ericoid mycorrhiza and its effect on plants. The chapter six deals with development of biofertilizer industry.