Response of rice yield and yield parameters to timings of nitrogen application in Northern Ethiopia

  Gebrelibanos Gebremariam,  Fisseha Baraki

A field experiment was conducted in western Tigray, Northern Ethiopia, during the 2012 main cropping season, to investigate the influence of time of nitrogen application on rice yield and yield components. The experiment consisted of six application timings viz. 50% of the recommended at sowing and the remaining 50% at tillering (T1), 50% of the recommended at tillering and the remaining 50% at early panicle initiation (T2), 50% of the recommended at sowing and the remaining 50% at early panicle initiation (T3), 33% of the recommended dose at sowing, 34% of the recommended dose at tillering and 33% of the recommended dose at early panicle initiation (T4) , 33% of the recommended dose at tillering, 34% of the recommended dose at early panicle initiation and 33% of the recommended dose at late panicle initiation (T5) and 100% of the recommended dose at sowing (T6). The trail was laid out in a randomized complete block design with three replications. Rice yield and yield components were significantly affected by time of nitrogen applications. Highest grain yield, number of productive tillers per plant, plant height and harvest index were recorded with application of 33% of the recommended dose at sowing, 34% of the recommended dose at tillering and 33% of the recommended dose at early panicle initiation. However, rice crop phenology and panicle length were not affected by timings of nitrogen application.

Keywords- Nitrogen, application time, Rice, Northern Ethiopia, Grain yield

Unique Identification Number - IJEDR1604136
Page Number(s) - 897-900
Pubished in - Volume 4 | Issue 4 | December 2016
DOI (Digital Object Identifier) -   
Publisher - IJEDR (ISSN - 2321-9939)

  Gebrelibanos Gebremariam,  Fisseha Baraki,   "Response of rice yield and yield parameters to timings of nitrogen application in Northern Ethiopia", International Journal of Engineering Development and Research (IJEDR), ISSN:2321-9939, Volume.4, Issue 4, pp.897-900, December 2016, Available at :http://www.ijedr.org/papers/IJEDR1604136.pdf