EFFECT OF DIFFERENT NITROGEN LEVELS ON YIELD AND YIELD COMPONENTS OF FINE GRAIN ADVANCE RICE LINE PK 8677-18-7-1-14.

Abstract

An experiment was conducted during the kharif seasons (from May to November) for two successive years i.e. 2010 and 2011 in research block of Rice Research Institute, Kala Shah Kaku to assess appropriate nitrogen fertilizer dose for maximum paddy yield production of a new advanced fine grain rice line PK 8677-18-7-1-14. Six nitrogen levels i.e. 0, 110, 133, 156, 179, and 202 kg ha-1 were applied. Agronomic parameters like Plant height, tillers count per plant, panicle length, grains per panicle, 1000 grain weight and yield increased with application of nitrogen from 0 to 133 N kg ha-1 . Above this level, paddy yield and all the yield components remained at par with each other, showing that the dose of 133 nitrogen kg ha-1 was optimum for obtaining maximum yield of this rice line.