PRODUCTION POTENTIALITIES OF RICE GENOTYPES AS INFLUENCED BY NITROGEN LEVELS
1Department of Agronomy, College of Agriculture,
Acharya N.G. Ranga Agricultural University, Rajendranagar, Hyderabad- 500 030, India.
Published In
Indian Journal of Agricultural Research
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PRODUCTION POTENTIALITIES OF RICE GENOTYPES AS INFLUENCED BY NITROGEN LEVELS
1Department of Agronomy, College of Agriculture,
Acharya N.G. Ranga Agricultural University, Rajendranagar, Hyderabad- 500 030, India.
ABSTRACT
An investigation was conducted during the kharif, 2008 to study the effect of nitrogen fertilization on production potential and economics of rice genotypes. Growth and yield of lowland rice genotypes differed significantly due to application of different levels of nitrogen. Among the tested cultivars hybrid PA6201 was found significantly superior to other genotypes in increasing the growth and yield attributes and it is followed by another hybrid PHB-71. Among all the three genotypes hybrid PA6201 recorded the maximum grain (6335 kg ha-1) and straw (8892 kg ha-1) yield. Two hybrids PA6201, PHB-71 recorded 19.84%, 15.61% of yield advantage respectively over the variety Rajavadlu. Application of incremental doses of nitrogen significantly improved the growth, yield attributes resulting in higher grain and straw yield. In all the three genotypes net returns and benefit cost ratio were increased with the increase in N levels. Among all the treatments hybrid PA6201 at 150% RDN recorded the highest net returns and benefit cost ratio than any other treatment.
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In this Article
APC
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Published In
Indian Journal of Agricultural Research