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The salt affected soil and saline waters are widespread in several countries of the world and presents a serious problem of immense practical importance for crop producation because of their peculiar inhospitable characteristics for plant growth deespite tnherent potentialities. Faced with the dilemma of salinity for a long time, mankind considered salt affected soils as uncultivable waste lands and confined their energies to better soil. The need for extending ...
Man made fertilizers have come to stay in the present century for increasing the output of agricultural production and to meet ever increasing demand of human population, which has been further accentuated by the limited availability of additional fertile farm land. Industrial nitrogen is heavily dependent on energy derived from fossil fuel which is getting depleted at a very fast rate. On the contrary, biological nitrogen fixation requiring nearly half the ...