SWAP (Soil-Water-Atmosphere-Plant) version 2.0 was evaluated for its capability to simulate crop growth and salinity profiles under various combinations of fresh and saline water use for irrigation at Agra (India), located in a semiarid monsoon climatic region having a deep water table. Best available water (BAW, EC 3.6 dS/m) was used for pre-sowing irrigation to wheat. Simulated results confirmed that a yield potential exceeding 80% could be maintained by substituting saline waters up to 8 dS/m in the absence of fresh water following a pre-sowing irrigation with BAW. This strategy helps to overcome the build-up of salts particularly in years when the monsoon rainfall is below average.

Publication date
Objective
Adaptation
Sectors
Water
CTCN Keyword Matches
Irrigation
Water
Osmotic power
India
Runoff control structures to temporarily store rainfall