Ecology, Environment and Conservation Paper

Vol 23, Feb 2017 Suppl. Issue; Page No.(31-35)

EFFECT OF DIFFERENT CULTIVARS OF DIRECT SEEDED BASMATI RICE UNDER DIFFERENT NITROGEN SCHEDULING IN NORTH- WESTERN INDIA

Mohinder Singh, Dharam Bir Yadav, S.S. Punia, Suresh K. Kakralia and Naveen

Abstract

Rice is an important crop as it is the staple food of half of the worldÂ’s population. Among various agro management practices cultivars and nitrogen scheduling significantly affected its phenology, growth, yield components in direct seeded rice. Rice cultivars performed differently when sown in field at varying seedling ages depending upon their genetic makeup and adoptability to certain environmental conditions. Nitrogen is required in huge quantity in direct seed rice system as it is an important constituent of plant parts and processes. Rice phenology, growth, yield parameters and yield increases significantly with the increase in nitrogen rate but after a certain limit. Keeping in view the experiment was conducted with different Basmati rice varieties with different nitrogen rates and splits at Rice Research Station at Karnal, in kharif seasons of 2014 and 2015. Nitrogen had significant positive effect and was equally superior in terms of plant height, tillers/m.r.l., grains panicle-1, grain yield, straw yield and nutrient uptake. Maximum plant height, number of tillers/m.r.l, dry weight/m.r.l, growth parameters and yield was recorded under110 kg N ha-1. Among varieties highest grain yield (pooled 48.2 q/ha) was recorded in HB-2 followed by PB-1121 (pooled 47.1q/ ha) and minimum recorded with PB-1509 (43.4 q/ha) under direct seeding conditions.

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