The growth in agricultural production in the last three decades has been accompanied by a sharp increase in the use of chemical fertilizers, causing serious concern.
Foremost among these concerns is the effect of excessive fertilizers on the quality of soil and ground water.
The use of environmental friendly biofertilizers can cut down the use of chemical fertilizers.
Biofertilizers have definite advantage over chemical fertilizers. It is economical to use
biofertilizers as they are a cheap source of nutrients when compared to chemical fertilizers.
Biofertilisers in addition to nitrogen and phosphorus, also provides certain growth promoting substances like hormones, vitamins, and amino acids that improves the plant health and vigour.
Continuous use of chemical fertilisers adversely affects the soil structure whereas biofertilizers when applied to soil improve the soil structure. The chemical fertilizers are toxic at higher doses where as biofertilizers have no toxic effects.