International Journal of Agricultural Research 5 ( 5 ): 259 - 267 , 2010
International Journal of Agricultural Research 4 ( 12 ): 418 - 424 , 2009
Guriqbal Singh, H.S. Sekhon, Gurdip Singh, J.S. Brar, T.S. Bains and S. Shanmugasundaram
International Journal of Agricultural Research 6 ( 7 ): 573 - 583 , 2011
International Journal of Agricultural Research 6 ( 8 ): 653 - 659 , 2011
Guriqbal Singh, H.S. Sekhon and Harpreet Kaur
International Journal of Agricultural Research 7 ( 2 ): 93 - 99 , 2012