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After the Green Revolution agriculture was mainly based upon a package of various agricultural inputs, namely the use of high-yielding varieties of different crops, water, pesticides and chemical fertilizers. Excessive use of nitrogenous fertili zers in many rice- and wheat-producing states in comparison to phosphatic and potassic fertilizers has not only deteriorated the soil health but has also impaired the health of human beings and animals (Gupta and Singh, 2006). Similarly indiscriminate and excessive use of pesticides produced health hazards in animals and human beings and soil macro/micro flora and fauna (Gupta and Singh, 2008). Thus, to reinforce the development of sustainable agriculture, use of bio-fertilizers has assured great promise to mete out the nutrient demand. The term ‘bio-fertilizers’ denotes nutrient supplement inputs for plant growth which are biological in origin. The role of biofertilizers in agricultural production assumes special significance, particularly in the present context of expensive chemical fertilizers. Moreover, it can provide the farmers with a new strategy which is helpful for achieving the goal of increasing productivity. Keeping in mind the environment safety, food security and availability of resources, it becomes obligatory to harness the full potential of the available bio-fertilizers.

Keywords

Soil health crop yields chemical fertilizers food grain production sustainable agriculture bio-fertilizers 

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