اثر تاريخ كاشت و ميزان نيتروژن سرك بر عملكرد و اجزاي عملكرد عدس

Effects of planting date and nitrogen rate on yield and yield components of lentil (Lens culinaris )

In order to study the effects of planting date and nitrogen rate on yield and yield components in Zabol local lentil, an experiment was carried out in 1997-98 at Zabol university farm. In this experiment four planting dates (Nov. 1816 and Dec. 1816) and four nitrogen levels (0, 18.5, 37 and 55.5 Kg haʹ) were compared in a split - plot experiment as RCBD with four replications. The results showed that plant growth period decreased as planting date was delayed. Seed yield, plant height, number of branches, number of full and empty pods, number of seeds per pod, 100 - seed weight and number of seeds in plant were affected with planting date and their difference was significant (p<0.01). Planting date effect on number of pods in node was significant (p<0.05). Maximum seed yield was obtained with 55.5 Kg ha-ʹ at first planting date and minimum seed yield with 55.5 Kg haʹ at fourth planting date.