THE MAGNITUDE OF EVAPORATION LOSSES IN INCREASING SALINITY OF DRAINAGE WATER
EL-GUINDY, S., ABOU-BAKR, A. (1994). THE MAGNITUDE OF EVAPORATION LOSSES IN INCREASING SALINITY OF DRAINAGE WATER. EKB Journal Management System, 72(2), 321-332. doi: 10.21608/ejar.1994.449370
SAMIA EL-GUINDY; ATIATT ABOU-BAKR. "THE MAGNITUDE OF EVAPORATION LOSSES IN INCREASING SALINITY OF DRAINAGE WATER". EKB Journal Management System, 72, 2, 1994, 321-332. doi: 10.21608/ejar.1994.449370
EL-GUINDY, S., ABOU-BAKR, A. (1994). 'THE MAGNITUDE OF EVAPORATION LOSSES IN INCREASING SALINITY OF DRAINAGE WATER', EKB Journal Management System, 72(2), pp. 321-332. doi: 10.21608/ejar.1994.449370
EL-GUINDY, S., ABOU-BAKR, A. THE MAGNITUDE OF EVAPORATION LOSSES IN INCREASING SALINITY OF DRAINAGE WATER. EKB Journal Management System, 1994; 72(2): 321-332. doi: 10.21608/ejar.1994.449370

THE MAGNITUDE OF EVAPORATION LOSSES IN INCREASING SALINITY OF DRAINAGE WATER

Egyptian Journal of Agricultural Research
Article 3, Volume 72, Issue 2, August 1994, Page 321-332  XML PDF (2.54 MB)
Document Type: Original Article
DOI: 10.21608/ejar.1994.449370
View on SCiNiTO View on SCiNiTO
Authors
SAMIA EL-GUINDY1; ATIATT ABOU-BAKR2
1Drainage Research Institute, Water Research Centre, Cairo, Egypt
2Soils and Water Research Institute, Agricultural Research Centre, Giza, Egypt
Abstract
The severe and increasing shortage of water resources in Egypt becomes imperative to consider re-use of drainage water, which salinity in the drainage water is often difficult to quantify with confidence. A preliminary study has been carried out to estimate the evapo‌ration losses in the rice field, as well as, the effect of this loss on in‌creasing salt concentration of the residual water, where the proportion of water lost to the atmosphere by evaporation rather than transpiration should be greater for this crop than for any other major crop in the Del‌ta. For this study, water samples were collected during June 1988 from El-Roda (conventional drainage system) and Nashart (modified drainage system) rice fields and analyzed for a stable isotope and some major elements. The main finding is that the extent of heavy stable isotope en‌richment in the rice field samples due to evaporation is quite large. From this we can estimate the amount of water lost by evaporation and de‌termine the increasing in salt concentration due to loss in water. This finding can be quite helpful in establishing the sources of salts in the drainage water.
Statistics
Article View: 1