242
R. Orthofer and W. Loibl
Leaking depth in m
C no irrigation
o
< 2.5m
2.5 - 4.5 m
4.5 - 7.5 m
10
20
30 Kilometers
Fig. 5. Annual nitrogen leakage depths in the Jordan Valley target area. Calculations are
based on assumption of an average soil moisture of 5%, and on properties of soils,
irrigation duration and practices, and evapotranspiration. The highest leakage depths occur
in the areas with high irrigation on sandy soils in the central parts of the target area (Wadi
Far'a and Karama regions)