Water relations
1983
Tawadros, H.W. (Agricultural Research Centre, Giza (Egypt). Soil and Water Research Inst.) | Ageeb, O.A.A. | Mohamed, G.E. | Salih, F.A. | El Nadi, A.M.H.
Water relations studies were carried out in Egypt and the Sudan to determine the effects of different irrigation practices on faba bean yield and performance in the 1979-81 seasons. In Egypt, withholding irrigation had an insignificant effect on faba bean yields at Mallawi, treatment including irrigation after 80% depletion in available soil moisture until flowering followed by irrigation at 40% level of depletion produced optimum yields, stage where irrigation is essential to avoid any decrease in yield is from flowering to pod filling, total consumptive use of water by faba beans was 31.85, 39.03, and 41.73 cm for the Delta, Middle, and Upper Egypt, respectively, water use efficiency of faba beans was 0.944 kg seeds/m3 of water cons1201umed, upper 30 cm of the soil profile is the most important soil fraction for practical irrigation purposes since it accounts for about 70% of the total soil moisture extraction, and applying the Blaney-Criddle formula, the seasonal consumptive use coefficient (K) was 0.58 and the maximum value was obtained during March. In the Sudan, the crop needs to be irrigated every 7-10
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