Effect Nitrogen Management on fertility Percentage in Rice (oryza sativa L.)
Journal Title: International Journal of Farming and Allied Sciences - Year 2013, Vol 2, Issue 14
Abstract
Nitrogen is the most important and the most limiting element in rice growth.This experiment was carried out in randomized complete block desing with 3 replication. Main polt was nitrogen rates including(100,200 and 300kgN/ha) applied as urea and sub plot was split application at three levelT1(1/2 basel-1/2 mid tillering), T2(1/3 basel-1/3 mid tillering-1/3 panicle initiation) and T3 (1/4 basel-1/4 mid tillering-1/4 panicle initiation-1/4 flowering).The analysis of variance showed that the different rate and split application of nitrogen fertilizer on total tiller, fertile tiller, fertile tiller percentage(%), bearin tiller percentage(%), total spikelet, fertile spikelet, fertile spikelet percentage(%), spikelet sterility percentage(%), 1000-grain weight and grain yeild were significant in different probability level. Results showed that maximum of this parameter was observed for 300 kg/ha nitrogen fertilizer except the fertile tiller precentage(%),bearin tiller percentage(%) and spikelet sterility percentage(%). also split application N-fertilizer increased the fertile spikelet percentage (%), fertile spikelet, fertile spikelet percentage(%),1000-grain weight and grain yeild but decresed in the total tiller, bearing tiller percentage% and spikelet sterility percentage(%). Nitrogen managemet (different rate and timing split) is important in improving the fertility percentage that productive high grain yield with the balance between crop N demand and applied fertilizer.
Authors and Affiliations
S. Yoseftabar
Keywords
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