PowerPoint on irrigation scheduling (.pptx)
MSU Excel spreadsheet for irrigation scheduling (.xls)
MSU Paper version for irrigation scheduling (.pdf)
Watermark Granular Matrix Sensor to Measure Soil Matric Potential for Irrigation Management* (530 KB; 8 pages, .pdf) Defines soil matric potential and describes principles and operational characteristics of one of the electrical resistance type soil moisture sensors for irrigation management. Examples show how soil matric potential can be used for irrigation management.
Link to Nebraska WatermarkTM Sensor Reading Calculator
Irrigation Trigger Levels for Various Nebraska Soils (chart, .pdf)
More detailed irrigation trigger levels for Watermark blocks with % water content derived for Nebraska charts (.pdf).
Crop's Root System Development