Abstract
Olive transplants of three cultivars (Khodeiri, Dremalali and Sorani) were sprayed three times during 2004 season with four levels of urea (46%N) (0,0.5,1and1.5%), one month intervals between each spray , the first spray was done at 10/4.Results which were obtained at mid October, indicated that there were a significant increase in the nitrogen concentration in the leaves ,leaf area, stem height and diameter ,number and length of new branches ,dry weight of vegetative growth and roots with the increase of urea concentration in the spray solution. The percentage of increase in these parameters in the fourth treatment ( that sprayed with 1.5% of urea) over the control were 81.08, 57.45, 20.32, 55.18, 365.56, 18.63, 56.70 and 52.25 % respectively . Dremalali cultivar was dominated over Khodeiri and Sorani cultivars in all characteristics studied. The percentage of increase of all parameters in this cultivar over Kodeiri cultivar were
between 5.55-45.90 %, meanwhile the percentage of increase over Sorani cultivar were between 4.11-43.98%. Morever the best treatment was the Dremalali seedlings which sprayed with 1.5% urea .
