A. Raja, K. Omar Hattab, L. Gurusamy, G. Vembu and S. Suganya
International Journal of Agricultural Research 2 ( 7 ): 599 - 606 , 2007
L. Gurusamy, K. Omar Hattab, N. Thavaprakaash, N. Gunasekhar and P. S. Vijayakumar
International Journal of Soil Science 2 ( 3 ): 224 - 229 , 2007
A. Raja, K. Omar Hattab, L. Gurusamy and S. Suganya
International Journal of Soil Science 2 ( 4 ): 278 - 285 , 2007