Wheat is the most important cereal crop grown in different parts of the world. It is the staple food for over 35% of the global population and provides more calories and proteins in the diet (Laegreid et al., 1999). Most of Indian agricultural lands are deprived of some of the essential nutrients for growth and development of crop plants and one of them is nitrogen. The importance of nitrogen in plants nutrition was first established by the classical wor of Boussingault as early as 1838. Nitrogen is required in large quantities by plants for proper growth and yield and is one of the basic constituent of proteins and nucleic acids (Lawlor, 2002). Nitrogen is provided to the cereal crops mainly in the form of synthetic chemical fertilizer, urea (Ladha et al., 2005). Excessive synthetic chemical fertilizers pose a health hazard and adversely affect soil microflora besides being quite expensive and raise the production cost of the marginal farmers (Stefan et al., 2008).