Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: 8/24/2012
Publication Date: 9/19/2012
Citation: DeJonge, K.C. 2012. Improving evapotranspiration simulations in the CERES-Maize model under limited irrigation. Meeting Abstract. Nov 11-13, 2012 Lincoln Ne.
Technical Abstract: Sustaining irrigated agriculture with limited water supplies may require management such as limited or deficit irrigation, where the goal is to maximize crop yield per unit of water consumed. Field trials of corn and sunflower have been conducted near Greeley, CO since 2008, with varying levels of water stress. In the most recent project which started in 2012, each crop has twelve stress treatments with four replicates, and varying levels of stress applied in the vegetative and maturity stages with no stress during sensitive reproductive stages. Research project design and various results are shown for corn field trials, including water productivity curves (yield vs. ET or irrigation), canopy cover, canopy temperature (with both infrared thermometers and thermal cameras), and other physiological stress indicators. Initial results have indicated linear relationship between yield and crop ET.