| Popis: |
The objective of this study was achieve preliminary Guideline of tolerance of barley, maize and wheat as a field crops and cucumber, pepper and tomato as vegetable crops to salinity and sodicity of irrigation water . Lysimeter experiments, using sand culture were curried out by cultivating field crops while plastic greenhouse was curried out using clay soil cultivated vegetable crops (cucumber, pepper and tomato ). These crops were transplanted and irrigated by saline water with different ECw values under two levels of SAR ( 7&14) for field crops and SAR7 for vegetable crops under North Delta climatic conditions. Linear equations of different crops indicated that, the relative yield decrease ( %) with increasing unit of ECw were 5.243 , 14.391, 8.187, 16.453 , 15.95 and 11.105 % for barley , wheat, maize, cucumber, pepper and tomato, respectively under SAR 7. Also, increasing the SAR of irrigation water to 14 increased the adverse effect of ECw on the crop yields according to their tolerance to salinity of irrigation water. The crops under consideration could be arranged in the descending order,:- Barley >wheat > maize for field crops and tomato < pepper |
