الفهرس 
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Abstract
The present study was carried out in the two seasons of 2014 and 2015 at the Edffina Experimental Farm of Production Sector, Agricultural Research Center, Edko, El-Beheira Governorate, Egypt. The main objective of this study was to identify the effect of nitrogen rates (0, 50, 100 and 150 kg N ha-1), on growth, yield and quality characters of Giza 179 and Sakha 104 rice cultivars under two sowing methods (Transplanting and broadcasting). Two experiments were laid out in split plot design based on RCBD in four replications in each sowing methods. Main plots were assigned to rice cultivars. While, the sub-plots was allocated to nitrogen rates. A combined analysis was used between the two experiments in each season. Nitrogen was supplied in the form of urea (46.5% N) in three doses. The studied characters were Plant height, number of tillers m-2, dry matter(g/m-2), days to 50% heading, panicle number m-2, panicle length, number of filled grains per panicle-1, number of unfilled spikelets panicle-1, panicle weight,1000-grain weight, grain yield, straw yield, harvest index, hulling percentage, milling percentage, head rice percentage, nitrogen content, protein content and nitrogen uptake in milled rice). The results obtained that application of transplanting method significantly increased with plant height, number of tillers m-2, dry matter weight m-2, panicle length, panicle weight, number of panicle m-2, 1000 grain weight, number of filled grains panicle-1, grain yield, straw yield, hulling percentage, milling percentage, head rice percentage, nitrogen content, protein content and nitrogen uptake in the milled rice compared with broadcasting method in both seasons. The cultivar Giza 179 surpassed Sakha 104 in number of tillers m-2, dry matter weight m-2, days to heading 50%, panicle length, panicle weight, number of panicle m-2, the number of filled grain panicle-1, grain yield. As for Sakha 104 cultivar, gave higher values for some of the traits in the two seasons plant height, 1000-grain weight, straw yield, hulling percentage, milling percentage, head rice, nitrogen content, protein content and nitrogen uptake in the milled rice. Increasing nitrogen rate up to 150 kg N ha-1 significantly increased plant height, number of tillers, dry matter weight, number of days to 50% heading, number of panicles m-2, panicle weight, number of filled grains panicle-1, number of unfilled spikelets panicle-1, grain yield, strew yield, harvest index, nitrogen content, protein content and nitrogen uptake in milled rice. Except 1000-grain weight, hulling percentage, milling percentage and head rice all the mentioned traites were gradually decreased by each increased of nitrogen fertilizer in both seasons. The highest grain yield was obtained from adding 150 or 100 kg N ha-1 to the rice cultivar Giza 179 sown by transplanting method in the two seasons. It can be concluded that transplanting of Giza 179 received 100 kg N ha-1 could be recommended for optimum grain yield under these conditions.