Effects of sowing date on growth and yield of wheat at different elevations in Jebel Marra highlands under rain-fed conditions
2006
Ahmed, M.F., University of Khartoum, Shambat (Sudan). Faculty of Agriculture | Ahmed, A.S., Agricultural Research Corporation (Sudan). Nyala Research Station
A field experiment was conducted in Jebel Marra (Sudan) for two seasons, 2001-02 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: Trongtonga at 2800 m and Gorlambang at 2300 m above sea level (a.s.l.) on the growth and yield of wheat. The experiment was carried out under rainfed conditions using three cultivars; namely, Debeira, El Nelein and a local cultivar (Donki). The results showed that the early sowing (July) produced higher grain and biomass yields, higher number of spikes/ unit area, more spikelets/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 anthesis 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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