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Abstract
This study was conducted on a farm of Agriculture Faculty of Kafr El-Sheikh - Kafr el-Sheikh University during two seasons in a row from _2005m Agriculture), (2006) The study included two experiments in both seasons.
where targeted first experiment and study the effect of different sources and levels of nitrogen fertilization on the growth and chemical composition of seedlings oaks Hariri age one year and targeted the second experiment, the study of the effect of different sources and levels of nitrogen fertilization with the use of levels of agricultural sulfur on growth and chemical composition of the plant Altermnalaa age one year included the first experiment on nine (9) transactions in addition to the treatment of the control without Add fertilizer where the nitrogen sources are sulphate of ammonia (N20.5%) was added in three transactions is 1 g nitrogen 0.2 g nitrogen 0.3 g nitrogen per potted plant at a rate of (4.88, 9.75, 14.63 grams of ammonium sulfate per pot) and ammonium nitrate (N33. 5%) in three levels are 1 gm first level of 0.2 gm second level of 0.3 gm third level at a rate of (9,6,3 g per pot of Ntrrat ammonia and added urea (N46.5%) in three levels is the level of the first 1 g, and the second level 2 g, and the level III 3 g nitrogen per pot at a rate of (2.15, 4.30, 6.45 g per pot) of urea and was a source of phosphorus is a super user calcium phosphate.