Effects of sowing date on growth and yield of three wheat (triticum aestivum l.) cultivars grown at different elevations in jebel marra highlands under rainfed conditions
2008
Ahmed, M.F., University of Khartoum, Khartoum (Sudan). Faculty of Agriculture | Ahmed, A.H., University of Khartoum, Khartoum (Sudan). Faculty of Agriculture | Burhan, H.O., University of Khartoum, Khartoum (Sudan). Faculty of Agriculture | Ahmed, F.E., University of Khartoum, Khartoum (Sudan). Faculty of Agriculture
A field experiment was conducted in Jebel Marra (Sudan) for two seasons (2000/01 and 2002/03) on farmers' fields to investigate the effect of four sowing dates (early July, mid-July, early August and mid-August) and two sites (Trongotonga at 2800 m and Gorlambang at 2300 m above sea level) on the growth and yield of wheat. The experiment was carried out under rain fed conditions using three cultivars; namely, Debeira, El Nelein and a local cultivar (Donki). The results showed that early sowing (July) produced higher grain and biomass yields, higher number of spikes/ unit area, more spike lets/spike and more seeds/spike compared to late sowing. Generally, the crop at the higher elevation site had greater biomass, higher grain yield and yield components. At low elevation, the three cultivars reached anthesis and matured earlier than at higher elevation. El Nelein was the earliest to reach an thesis and produced the highest grain and biomass yields. The local cultivar (Donki) was the latest to flower and gave the lowest yield and yield components
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