Abstract
A method using the Water Deficit Index (WDI) as a guide to determining irrigation management zones and reducing soil samples needed to characterize plant available water is proposed. The WDI is an expansion of the Crop Water Stress Index (CWSI) where soil background under partial canopy cover is accounted for. WDI maps did not appear similar to a map of plant available water; thus, it had limitations in defining irrigation management zones. A WDI map generated four days after an irrigation did provide a suitable guide for soil sampling locations. Point locations where soil plant available water was known could be selectively reduced by 75% using the WDI map with only an average error of 0.08 cm, and error was within 10% for 98% of the field area.
| Original language | English (US) |
|---|---|
| Pages | 2635-2656 |
| Number of pages | 22 |
| State | Published - 2000 |
| Event | 2000 ASAE Annual International Meeting, Technical Papers: Engineering Solutions for a New Century - Milwaukee, WI., United States Duration: Jul 9 2000 → Jul 12 2000 |
Other
| Other | 2000 ASAE Annual International Meeting, Technical Papers: Engineering Solutions for a New Century |
|---|---|
| Country/Territory | United States |
| City | Milwaukee, WI. |
| Period | 7/9/00 → 7/12/00 |
Keywords
- Irrigation management
- Precision agriculture
- Remote sensing
- Water deficit index
ASJC Scopus subject areas
- Engineering(all)