PROJECT SUPPORTERS

STUDY LOCATION

United States Bureau of Reclamation USDA-ARS Arid Land Agricultural Research CenterYuma County Agriculture Water CoalitionVarious Grower CooperatorsNASA Jet Propulsion LaboratoryNASA Goddard Space Flight CenterUA Experiment Station Strategic Research Investment FundsUA Water, Environmental and Energy Solutions –TRIF Project FundsArizona Department of Ag Specialty Crop Block Grant ProgramArizona Citrus Research Council Arizona Grain Research and Promotion Council (AGRPC)Arizona Iceberg Lettuce Research Council (AILRC)

COLLABORATING RESEARCHERS

University of Arizona• Dr. Charles A. Sanchez• Dr. Paul Brown• Dr. Dawit Zerihun• Dr. Mazin Saber• Dr. Juan Gonzalez Cena

OBJECTIVES

High-tech irrigation & soil salinity management research study in Yuma County, Arizona

EVAPOTRANSPIRATION & SALINITY MONITORED AT MULTIPLE SCALES

Quantitative Assessments of Water and Salt Balance for Cropping Systems in the Lower Colorado River Region

USDA-ARS Arid Land Ag Research Center• Dr. Andy French• Dr. Clinton Williams• Dr. Eduardo Bautista

• Satellite Imagery (10 – 30 m)• Landsat• Sentinel 2a/2b• VENuS• ECOSTRESS

• Aerial Imagery (cm – m)• UAV sensors

• Field Scale• Eddy Covariance • Large Aperture Scintillometers • Conductance Survey (EM-38)

• Point Measurements• Sensors and data loggers• Soil samples and analysis

Ongoing data collection and analysis aimed at understanding water and salt balance for multiple cropping rotations during the annual production cycle

• Quantitatively track water use and soil salt balance to determine beneficial useacross typical crop production systems and rotations over a 3 year period.

• Develop mobile apps that take into account actual crop ET and required leaching coefficient to assist growers with irrigation decisions.