A Comparative Study of Leaf Color Chart Based and Farmer’s Practice of Nitrogen Fertilizer Application on Rice under On-farm Conditions of Bangladesh

M. A. Haque, M. M. Husain, D. E. Jharna, M. N. Uddin and A.S.M. Iqbal Hussain

Pakistan Journal of Biological Sciences 6 ( 19 ): 1685 - 1688 , 2003