Comparison of Daily Crop ET Estimation Models
Jerry Wright,
Associate Professor, West Central Research and Outreach Center,
Morris, MN
Cooperators include East Otter Tail SWCD at Perham, Wadena
County SWCD, and Central Lakes Ag Center at Staples
Funding Source
Irrigators Association of Minnesota
Objective
- Compare the daily ET estimations from several ET
models over 2-3 locations in Central Minnesota.
- Encourage adoption of using daily crop ET information
in an irrigator’s water scheduling program.
Need
or Impact
Irrigation scheduling is an important task
to optimize a crop production system and reduce the risk of
leaching
crop
chemicals
into the groundwater. Access to and knowledge of daily
crop water use (ET) is a critical factor in deciding
when to
irrigate. Project results have encouraged some farmers
to use their
local ET hotline and/or the Wisconsin-Minnesota Daily
Crop ET web
site.
Project Status
Ongoing. Presented data to irrigators around
the state via IAM newsletter and presentations at their annual
meetings in Hubbard,
Becker, and Hastings.
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