Agricultural Research Institute;
Dera Ismail Khan 29020;
NWFP;
Pakistan;
Department of Agronomy;
Faculty of Agriculture;
Gomal University;
Dera Ismail Khan;
NWFP;
Pakistan;
Weed Science Department;
NWFP Agricultural University;
Peshawar 25130;
NWFP;
Pakistan;