Department of Agronomy;
Faculty of Agriculture;
Gomal University;
Dera Ismail Khan;
NWFP;
Pakistan;
Department of Biomechanical Systems;
Faculty of Agriculture;
Ehime University;
Tarumi 3-5-7;
Matsuyama 790-8566;
Japan;
Weed Science Department;
NWFP Agricultural University;
Peshawar 25130;
NWFP;
Pakistan;
Agricultural Research Institute;
Dera Ismail Khan;
NWFP;
Pakistan);