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Use of high energy agricultural inputs like chemical fertilizers and pesticides cause soil and environmental hazards, so it is desirable to develop a sustainable production system that give optimum productivity with minimum environmental pollution. The world’s most productive ‘rice-wheat production system’occupying 10 million ha area in India has also showing signs of fatigue during the last decade. The evidences suggest that natural resources may be reducing productivity in this production system (Prasad, 2005) In India, zinc deficiency is widespread in the rice-wheat cropping system belt of north India which has high pH and calcareous soils (Prasad 2005). Evidences also indicate increased environmental pollution by nutrient leaching or runoff from farms mainly because of increased fertilizer application with low fertilizer use efficiency of crops (FAO 1994, Singh and Singh, 2003). Judicious management of organic and inorganic sources of nutrients is extremely important to reverse this trend. The integrated use of chemical fertilizers, biofertilizers, green manuring and recycling of crop residues thus assumes greater significance (Meelu, 1996). There are many effective practices like green manuring, use of