Open Access Research Paper Views (806) Sustainable production of new released wheat cultivars by using urea plus nitragin as a biofertilizer Bahram Mirshekari, Sahar Baser Kouchebagh Int. J. Biosci. 3(6), 38-44, June 2013. DOI: http://dx.doi.org/10.12692/ijb/3.6.37-44 Keywords: Agronomic nitrogen use efficiency, Harvest index, Seed biofertilization, Yield Details