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Title:   Author  item
                                            DeJonge, Kendallitem
                                            TROUT, THOMAS - Retired ARS Employeeitem
                                            Comas, Louiseitem
                                            Gleason, Seanitem
                                            Zhang, Huihui
  Submitted to: Irrigation Association Conference Proceedings
                                    Publication Type: Abstract Only
                                    Publication Acceptance Date: 3/15/2016
                                    Publication  Date: N/A
                                    Citation: N/AInterpretive Summary:
                                Technical Abstract: Agricultural water research has been conducted for over 100 years at the USDA-ARS Limited Irrigation Research Farm (LIRF) near Greeley, Colorado. Recent experiments since 2008 have focused on deficit irrigation of commodity crops, primarily corn. Experimental design and facilities are described, as well as water production function (yield vs. evapotranspiration) data obtained from 2009-2016. Water balance is determined using several inputs including on-site reference evapotranspiration, canopy cover, and feedback from soil water content using neutron probe measurements. Physiological measurements, from root length density to plant transpiration via sap-flow, have been taken and their results are also discussed. Ground-based remote sensing is an important component of the program, from continuous infrared canopy temperature readings in focused plots to less frequent ground-based multispectral and thermal imaging taken from a highboy tractor with a customized boom. Results and publications from previous projects are briefly highlighted, and a change in focus for the next project phase (2016-2020) is outlined.


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