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Ambrosia of Soil: Bio-Fertilizers, Its Mechanism and Their Role in Forest Trees

AJK Asaiya, Diwyansh Raj

In the present context, the best alternative of chemical fertilizer is necessary because of its adverse effects on the soil health. There are several alternatives available to enhance the soil fertility like Vermicompost, FYM (Farm-Yard Manure), Organic Fertilizers, Biofertilizers viz., Azotobacter, Azospirillum, Phosphate Solubilizing Bacteria, Rhizobium and AM (Arbuscular Mycorrhizae) Fungi. They are free living N2– fixer, Phosphate solubilizer diazotroph that has several beneficial effects on the crop growth, yield prevent to the disease. They are helps in synthesis of growth regulating substances like auxins, cytokinin and Gibberellic Acid (GA). In addition, it stimulates rhizospheric microbes, protects the plants from Phyto-pathogens, improves nutrient uptake and ultimately boost up biological nitrogen fixation. The abundance of these bacteria in soil is related to many factors, mostly soil pH and fertility. Bio fertilizers were tested against forest tree species.