Department of Plant Production, Faculty of Agriculture, Jordan University of Science and Technology, Irbid - 22110, Jordan.
The effect of time of weed removal on the growth and yield of Lentil (Lens culinaris Medik.) in a semi-arid Mediterranean climate were studied during two cropping seasons 1998–1999 and 1999–2000. Eight treatments of weed removal {an unweeded treatment (control), removal of weeds once at 30,60 and 90 DAS, twice at 30 and 60 DAS, twice at 30 and 90 DAS and twice at 60 and 90 DAS and a weed-free-treatment}. Removing weeds from 30 and 90 days after seeding (DAS) led to significantly larger yields than that of plots, which were not weeded. Maximum seed yield in both seasons was obtained when weeds were removed twice at 30 and 60 DAS.