Agricultural Research Corporation (ARC) - Sudan
Proceedings of the Meetings of the National Crop Husbandry Committee - NCHC
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Effect of Nitrogen
Levels on Growth and Yield of Wheat at Different Elevations under
Rain-fed Conditions in Jebel Marra Highlands
Abdel Samad H. Ahmed , Mahmoud F. Ahmed , Hamid O. Burhan and Faisal
E. Ahmed
Abstract:
A field experiment was conducted at two sites for two seasons, 2000-01
and 2002-03 at farmer’s fields to investigate the effect of four
nitrogen levels; 0, 20, 40 and 60 kg N/ha, at two elevations;
Trongotonga at 2800 m above sea level (a.s.l.) and Gorlambang at 2300 m
a.s.l. on growth and yield of three wheat cultivars; Debera, El Nelein
and a local variety Donki, in Jebel Marra highlands. Results showed that
nitrogen application significantly increased flag leaf area, plant
height in both elevations. As for yield and yield components, a positive
increase in grain yield was obtained as a result of nitrogen
application. The pattern of response of spikelets per spike, seeds per
spike, number of spikes per m2 was similar to that of grain yield.
Nitrogen fertilizer, generally, decreased the 1000-seed weight and
harvest index. Nitrogen percentage of plants at 50% anthesis and grain
nitrogen percentage increased gradually with increasing nitrogen levels.
Generally, the crop at high elevation site, gave greater biomass yield,
grain yield and yield components. El Nelein variety was the earliest to
flower and mature and produced higher grain and biomass yields with
increased N levels. The local variety Donki was the latest to flower and
mature, and gave the lowest yield and yield components.
]Proceedings of the Meetings of the National Crop Husbandry Committee 39th (2005) pp. 37-49
Proceedings of the Meetings of the National Crop Husbandry Committee - Sudan
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