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Water use curve for potatoes

Figure 19. Water use curve for potatoes, adapted from Crop Water Use Curves for Irrigation Scheduling, Special Report 706 Agricultural Experiment Station, Oregon State University, Corvallis, OR. Daily water use (ET) can be calculated by multiplying the daily pan evaporation (available from newspapers or weather stations) by the water use coefficient for the current crop stage as indicated in this figure. These ET figures can be used in a water budget such as the one shown in Figure 18.

Illustration from Integrated Pest Management for Potatoes in the Western United States, 2nd edition. UC ANR Publication 3316.

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