Metwally, T., Gewaily, E., Naeem, E., El-Malky, M. (2011). RESPONSE OF DIFFERENT PROMISING RICE GENOTYPES TO VARIOUS NITROGEN LEVELS.. Journal of Plant Production, 2(3), 507-520. doi: 10.21608/jpp.2011.85585
T. F. Metwally; E. E. Gewaily; E. S. Naeem; M. M. El-Malky. "RESPONSE OF DIFFERENT PROMISING RICE GENOTYPES TO VARIOUS NITROGEN LEVELS.". Journal of Plant Production, 2, 3, 2011, 507-520. doi: 10.21608/jpp.2011.85585
Metwally, T., Gewaily, E., Naeem, E., El-Malky, M. (2011). 'RESPONSE OF DIFFERENT PROMISING RICE GENOTYPES TO VARIOUS NITROGEN LEVELS.', Journal of Plant Production, 2(3), pp. 507-520. doi: 10.21608/jpp.2011.85585
Metwally, T., Gewaily, E., Naeem, E., El-Malky, M. RESPONSE OF DIFFERENT PROMISING RICE GENOTYPES TO VARIOUS NITROGEN LEVELS.. Journal of Plant Production, 2011; 2(3): 507-520. doi: 10.21608/jpp.2011.85585
RESPONSE OF DIFFERENT PROMISING RICE GENOTYPES TO VARIOUS NITROGEN LEVELS.
Rice Res. and Training Center, Field Crops Res. Inst., Agric. Res. Center, Sakha 33717 - Kafr El-Sheikh, Egypt.
Abstract
Two field experiments were conducted at the Experimental Farm of Rice Research and Training Center, Sakha, Kafer El-Sheikh, Egypt during the rice growing seasons of 2009 and 2010 to evaluate the response of different rice genotypes namely, GZ8455, GZ8450, GZ7576, GZ8479, GZ8126, GZ7769, GZ7764 and GZ6522 (Sakha105) to various nitrogen levels (0, 40, 80, 120, 160, 200, 240, 280 and 320 Kg N ha-1). Yield and yield attributes were determined at maturity. A wide variation in nitrogen response was observed in the eight rice genotypes. GZ6522 produced the highest grain yield followed by GZ8455 and GZ8126. Grain yield and most of yield attributes generally increased with increasing nitrogen levels up to 160 kg N ha-1.
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