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1 Tekinel, O.; Kanber, R.; Bastug, R.; Onder, S.; Algoz, T.. 1989. Cotton yield, evapotranspiration and other properties as affected by different soil series and irrigation programs under ukorova conditions. In Rydzewski, J. R.; Ward, C. F. (Eds.) Irrigation theory and practice. Proceedings of the International Conference, University of Southampton, 12-15 September. London: Pentech Press. pp.471-482.

Cotton ; Evapotranspiration ; Crop yield ; Soil-water-plant relationships ; Water deficit ; Irrigated farming / Turkey / Anatolia

(Location: IWMI-HQ Call no: 631.7 G000 RYD Record No: H07536)

Because of the difference in the physical and chemical composition between soil series, their effects on cotton yield and Et were dissimilar. The cotton yield and growth in soil series which have recolor and dry mulch on their surface were 29-49 per cent higher than those obtained in others. Cotton root growth varied according to the soil series and irrigation programmes. More than 50 per cent of root on dry basis was in the first 30cm soil layer and 25- 30 per cent of seasonal Et was also from the same soil depth. The effects of the different wetting depths on yield were statistically insignificant. Under deficit irrigation conditions, it was found that 30 per cent of the net irrigation water could be saved and by doing this, a 0.43 decar area would be opened to irrigation. For the highest yield, the irrigations must be applied when the available soil water in root depth is at 40-60 per cent level according to the soil series. Irrigation season lengths were compared in Herein plain in Southeastern Anatolia Project (GAP) area. It was determined that 80 or 90 days of season was best for optimum yield.