Effect of various irrigation regimes on sesame growth and yield under Gezira conditions

Mahasin A. Mohamed, Saeed M. Farah

Abstract


This study was conducted on sesame at the Gezira Research Station Farm, during the seasons (2000/01, 2001/02 and 2003/04) using three irrigation treatments designated as (i) wet in which irrigation water was applied whenever the soil moisture depletion (SMD) in the root zone reached 50-55% throughout the season; (ii) medium when SMD reached 75-80% from emergence to 50 % flowering, 50-55 % from 50 % flowering to milk stage and 75-80 % thereafter and (iii) dry when the SMD reached 75-80 % throughout the season. The irrigation treatments were allotted to the main plots and the sesame cultivars namely, Kenana 2, Pachi, Promo, Khidir and Ziraa 9, were assigned to the subplots in a split plot design with four replications. The results showed that the highest seed yield and oil percentage were obtained from Kenana 2 followed by Promo, Pachi, Khidir and Ziraa 9 (P= 0.001). The result also indicated that seed yield, plant height, leaf area index and water use efficiency (WUE) were significantly greater in wet followed by medium and dry treatments. To achieve the best growth, seed yield, oil content and WUE, it is recommended to irrigate sesame at 50-55% SMD, i.e every 10 to 14 days under Gezira conditions.


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