Two field experiments were conducted in a private farm at El-Salhiea City; Sharkia Governorate during two winter seasons of 2006/2007 and 2007/2008 to investigate the effect of nitrogen fertilizer rates, timing and splitting application on wheat plant (triticum aestvum L.) on reclaimed soils. Ten treatments were arranged in a split plot design with three replicates; which were the simple possible combination between five treatments of N-fertilization, (30, 60, 90, 120 and 150 kg N fed-1) and two splitting doses of each N rates (1 st splitting was divided to two equal doses 50 and 50% after 14 and 48 DAS and 2 nd splitting was divided to four doses 40, 20, 20 and 20% after 14, 28, 48, 56 DAS). The wheat plant growth progressively increased with increasing the nitrogen fertilizer rates and the superiority of plant height, chlorophyll and spike length observed with 120 kg N fed-1 rather with N fertilizer splitting to 2 or 4 doses. The higher number of grains/spike observed with N fertilizer treatment at rate of 120 kg N fed-1 splitting to 4 doses. 1000 grain weight, straw and grain yield increased with increasing the rate of N fertilizer up to 120 kg N fed-1. Treatment 120 kg N fed-1 in four doses as 40, 20, 20 and 20% after 14, 28, 48, and 56 DAS, recorded higher values of 1000 grain weight, straw and grain yield of wheat. Significant difference in N, P and K concentration in boating and harvest stages in straw and in wheat grain were observed due to different levels, splitting and time of N application. In general, N, P and K% were increased with increasing the N fertilizers levels up to 120 kg N fed-1 with split to 2 doses, and 150 kg N fed-1 with split to 4 doses. Under the same conditions of the experiment, it can be recommended to add the nitrogen fertilizer at 120 kg N fed-1 in four doses as 40, 20, 20 and 20% after 14, 28, 48, 56 DAS, which gave the best result of quantity and quality of the wheat cultivated on sandy clay loam reclaimed soil.
