A field experiment was carried out under rain-fed conditions at Imla, Gambella Agricultural Research Institute in 2008 and 2009 main cropping seasons in order to compare the effects of N sources ammonium nitrate (NH4NO3), ammonium sulfate ((NH4)2SO4) and urea (CO(NH2)2) and their time of application (½ at sowing + ½ at tillering; ⅓ at sowing + ⅓ at tillering + ⅓ at panicle initiation; ½ at sowing + ½ at panicle initiation, and ½ at tillering + ½ at panicle initiation) on growth, yield attributes and yield of rice (Oryza sativa L.) variety NERICA-3 (O. sativa x O. glaberrima), in a factorial experiment laid out in a RCBD replicated thrice. Nitrogen from each source was applied at the rate of 92 kg N ha-1, and the plots received uniform dose of 46 kg P and 20 kg K ha-1 at sowing. The results revealed that effects of year on rice days to flowering, panicle length, number of grains and grain weight panicle-1, grain yield, grain protein content (P ≤ 0.01), plant height, and straw yield (P ≤ 0.05) were only significant. The responses of rice growth and yield components and grain protein to sources of N were not significant (P > 0.05). Plant height, panicle length and grain weight panicle-1 to application time were significant (P ≤ 0.05) while the other growth and yield components and grain protein were not (P > 0.05).
%0 Journal Article
%1 Iqbal2015
%A Iqbal, Zahid
%A Nesgea1*, Shiferaw
%A Gebrekidan2, Heluf
%A Sharma3, J. J.
%A Berhe3, Tareke
%D 2012
%J International Journal of Agronomy and Agricultural Research (IJAAR)
%K Application NERICA-3 attributes budget nitrogen partial rice sources time yield
%N No. 9
%P p. 14-32
%T Effects of nitrogen sources and application time on yield attributes, yield and grain protein of rain-fed NERICA-3 rice in Gambella, Ethiopia
%U http://dx.doi.org/10.6084/m9.figshare.1362149
%V Vol. 2
%X A field experiment was carried out under rain-fed conditions at Imla, Gambella Agricultural Research Institute in 2008 and 2009 main cropping seasons in order to compare the effects of N sources ammonium nitrate (NH4NO3), ammonium sulfate ((NH4)2SO4) and urea (CO(NH2)2) and their time of application (½ at sowing + ½ at tillering; ⅓ at sowing + ⅓ at tillering + ⅓ at panicle initiation; ½ at sowing + ½ at panicle initiation, and ½ at tillering + ½ at panicle initiation) on growth, yield attributes and yield of rice (Oryza sativa L.) variety NERICA-3 (O. sativa x O. glaberrima), in a factorial experiment laid out in a RCBD replicated thrice. Nitrogen from each source was applied at the rate of 92 kg N ha-1, and the plots received uniform dose of 46 kg P and 20 kg K ha-1 at sowing. The results revealed that effects of year on rice days to flowering, panicle length, number of grains and grain weight panicle-1, grain yield, grain protein content (P ≤ 0.01), plant height, and straw yield (P ≤ 0.05) were only significant. The responses of rice growth and yield components and grain protein to sources of N were not significant (P > 0.05). Plant height, panicle length and grain weight panicle-1 to application time were significant (P ≤ 0.05) while the other growth and yield components and grain protein were not (P > 0.05).
@article{Iqbal2015,
abstract = {A field experiment was carried out under rain-fed conditions at Imla, Gambella Agricultural Research Institute in 2008 and 2009 main cropping seasons in order to compare the effects of N sources [ammonium nitrate (NH4NO3), ammonium sulfate ((NH4)2SO4) and urea (CO(NH2)2)] and their time of application (½ at sowing + ½ at tillering; ⅓ at sowing + ⅓ at tillering + ⅓ at panicle initiation; ½ at sowing + ½ at panicle initiation, and ½ at tillering + ½ at panicle initiation) on growth, yield attributes and yield of rice (Oryza sativa L.) variety NERICA-3 (O. sativa x O. glaberrima), in a factorial experiment laid out in a RCBD replicated thrice. Nitrogen from each source was applied at the rate of 92 kg N ha-1, and the plots received uniform dose of 46 kg P and 20 kg K ha-1 at sowing. The results revealed that effects of year on rice days to flowering, panicle length, number of grains and grain weight panicle-1, grain yield, grain protein content (P ≤ 0.01), plant height, and straw yield (P ≤ 0.05) were only significant. The responses of rice growth and yield components and grain protein to sources of N were not significant (P > 0.05). Plant height, panicle length and grain weight panicle-1 to application time were significant (P ≤ 0.05) while the other growth and yield components and grain protein were not (P > 0.05).},
added-at = {2015-03-31T09:53:44.000+0200},
author = {Iqbal, Zahid and Nesgea1*, Shiferaw and Gebrekidan2, Heluf and Sharma3, J. J. and Berhe3, Tareke},
biburl = {https://www.bibsonomy.org/bibtex/2ed9ea95498275b8fd73ce2e7f64bace4/rajzahid},
interhash = {9dd7eed18ead9148dd2ccfe19062389c},
intrahash = {ed9ea95498275b8fd73ce2e7f64bace4},
journal = {International Journal of Agronomy and Agricultural Research (IJAAR)},
keywords = {Application NERICA-3 attributes budget nitrogen partial rice sources time yield},
month = {10},
number = {No. 9},
pages = {p. 14-32},
timestamp = {2015-03-31T09:53:44.000+0200},
title = {{Effects of nitrogen sources and application time on yield attributes, yield and grain protein of rain-fed NERICA-3 rice in Gambella, Ethiopia}},
url = {http://dx.doi.org/10.6084/m9.figshare.1362149},
volume = {Vol. 2},
year = 2012
}