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EFFICACY OF HERBICIDES FOR THE CONTROL OF GRASSY AND BROAD LEAF WEEDS IN WHEAT CROP AT EL-MARJ LIBYA

REHMA T ULLAH KHAN AND ABDUR RASHID

Abstract: Field experiments were conducted at the Australian Demon stration Farm at EI-Marj Libya during the winter season 1988-89 and 1989-90 to determine the efficacy of herbicides on grassy and broad leaf weeds and grain yield of Wheat variety Mexicale. Herbicides viz., moxan, Brominal, Dicuran and Dosanex alone and in different combinations were tested. Illoxan 36 F.e. 2.2. lit + 2 lit Brominal H/ha and Illoxan 36 F.C 2.5 lit + llit Brominal H/ha increased the yield significantly over other treatments in 1988-89 while Dicuran 500 F.W 5 lit/ha and Dosanex F.L 6 lit/ha in 1989-90. The herbicide treatments showed varied response on weed control according to prevailing wecd infestation in both the years. Dicuran 500 P.W and Dosancx F.L were more phytotoxic than the mixture of Illoxan 36 F.C and Brominal-H.

Arid Zone Research Substation, Dera Ismail Khan, Pakistan.