Use of supplementary irrigation for improvement of growth and yield of sorghum \{sorghum bicolor (l.) monech\} in North Darfur State
2010
Abdalla, S.A., University of El-Fashir, El-Fashir (Sudan) | Mustafa, M.A., University of Khartoum, Khartoum (Sudan). Desertification and Desert Cultivation Studies Institute | Fadl-Allmula, M., University of Khartoum, Khartoum (Sudan). Faculty of Agriculture, Dept. of Agronomy
A field experiment was conducted in two consecutive seasons (2006 and 2007) in AI-Fashir University Farm in North Darfur State to investigate the impact of supplementary irrigation at three available water depletion levels (AWDL); namely, 25%, 50% and 75% on growth and yield of two sorghum varieties (Wad Ahmed and Tabat) grown on a fine loamy, mixed isohyperthermic Typic Haplocambid. The experimental design was a split-plot design with four replicates. Irrigation treatments were designated the main plots and varieties the subplots. In both seasons, Wad Ahmed variety was significantly better than Tabat in germination percentage, plant height, leaf area index and number of heads. For the two seasons, the mean plant height, leave area index and number of heads ranged from 147.0 to 173.5 cm, 3.3 to 7.4 and 77 to 158, respectively. In the two successive seasons, the mean dry matter yield was 11.2 and 12.8 ton/ha for Wad Ahmed and 7.9 and 9.9 ton/ha for Tabat. In both seasons, the mean thousand grain weight and grain yield ranged from 26.0 to 29.59 g and from 6.2 to 9.4 ton/ha. Wad Ahmed gave significantly (P = 0.05) greater yield than Tabat in the first season, but the difference was not significant in the second season. Furthermore, in most cases, application of water at 25% AWDL gave better growth and yield than at 50% or 75%. However, the impact of A WDL was not significant because of the random variation of occurrence and quantity of rainfall. The Experiment showed that supplementary irrigation, using harvested water, offers a great potential for improving crop production in North Darfur State
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