Water Resources Engineering2D
Irrigation Engineering - Theory & Concepts - Soil Moisture
Detailed coverage of Irrigation Engineering including soil-water relationships, crop water requirements, salinity control, and irrigation efficiency.
Open the complete lessonSoil-Water-Plant Relationship Simulator
Adjust the soil properties (Field Capacity, Wilting Point), the crop root depth, and your Management Allowed Depletion (MAD) to calculate the Net Irrigation Requirement (the amount of water to apply per irrigation event).
25% (vol)
Maximum water held against gravity.
12% (vol)
Water unavailable to plants.
100 cm
50% of AWC
How dry the soil gets before we irrigate.
UNAVAILABLE
Field Capacity (FC) = 25%
Irrigation Trigger = 18.5%
Permanent Wilting Point = 12%
AWC (13.0%)
Total Avail. Water (AWC)
130
mmNet Irrigation Req. (d_net)
65
mm