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Evaluation of a Model for Irrigation Management Under Saline Conditions

I. Effects on Plant Growth

^a Soil and Water Science Unit, Univ. of California, Riverside, CA 92521
^b Inst. of Soils, Water, and Environmental Sci., Volcani Center, ARO, P.O. Box 6, Bet Dagan, Israel

View larger version (27K): [in a new window]   Fig. 1. The root distribution as a function of time after planting used in the simulations.

View larger version (21K): [in a new window]   Fig. 2. The simulated relative yield for the various irrigation intervals and irrigation water salinities for two years. The water salinities in dS m-1 were S1 (1.7), S2 (4.0), S3 (5.3), S4 (7.9) and S5 (10.2).

View larger version (18K): [in a new window]   Fig. 3. Comparison of measured and simulated relative yields assuming unstressed yield equal to 3.0 and 3.1 Mg ha-1.

View larger version (22K): [in a new window]   Fig. 4. The root-weighted average matric and osmotic heads prior to irrigation as a function of time for the 3.5-d irrigation interval and irrigation water salinities of 1.7 dS m-1 (S1) and 10.2 dS m-1 (S5).

View larger version (20K): [in a new window]   Fig. 5. The root-weighted average matric and osmotic heads prior to irrigation as a function of time for the 14-d irrigation interval and irrigation water salinities of 1.7 dS m-1 (S1) and 10.2 dS m-1 (S5).

View larger version (25K): [in a new window]   Fig. 6. The periodic and cumulative simulated relative ET for the 3.5-d irrigation interval and irrigation water salinities of 1.7 dS m-1 (S1) and 10.2 dS m-1 (S5).

View larger version (26K): [in a new window]   Fig. 7. The periodic and cumulative simulated relative ET for the 14-d irrigation interval and irrigation water salinity of 1.7 dS m-1 (S1) and 10.2 dS m-1 (S5).