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Traditional solid-set irrigation designs were performed to ensure 300 kPa at the nozzle of the impact sprinkler. Encouraging results were provided by different studies when reducing to 200 kPa at the nozzle. A collective sprinkler irrigated area, La Violada, was originally designed to operate at 300 kPa at the sprinkler nozzle (Violada300), in this research the collective network has been redesigned to operate at 200 kPa (Violada200). CINTEGRAL tool was used to simulate crop yield, irrigation performance and economic productivity for Violada300 and Violada200. The same crop pattern was simulated for both cases. Differences on crop yield between both cases were not relevant when yields are high (> 95%), for low yields (< 95%) Violada300 presented the highest yields, especially for corn. Seasonal irrigation performance resulted larger for corn and barley for Violada200 case since for alfalfa and peas Violada300 case performs better. When considering exploitation cost (water and electricity cost) and investment cost (pumping station, collective and on-farm networks), Violada200 obtains the largest economic productivity.
- Présentation
