Advantages and Disadvantages of Biofertilizers,Nitrogenous Fertilizers,Conventional Fertilizers,Relevance of Biofertilizers

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	Advantages and Disadvantages of Biofertilizers - The relevance of biofertilizers is increasing rapidly since chemical fertilizers (i) utilize petroleum (nitrogenous fertilizers), (ii) are costly, (iii) are short in supply, and (iv) damage the environment, e.g., about 10% of the ground water samples in Punjab contained more NO₃^- than the maximum permissible limit prescribed by World Health Organization.
In contrast, biofertilizers are (i) low cost inputs, (ii) lead to soil, enrichment and (iii) are compatible with long term sustainability. Further, (iv) they are ecofriendly and pose no danger to the environment. However, the acceptability of biofertilizers has been rather low chiefly because they do not produce quick and spectacular responses. In addition, the amount of nutrients provided by them is not enough to adequately meet the total needs of crops for high yields. Therefore, a pragmatic approach more likely to succeed will be to develop a rational and effective combination of biofertilizers and conventional fertilizers for optimum crop yields.