**AWARDS ISSUED PRIOR TO JANUARY 20, 2025, WERE FUNDED UNDER PREVIOUS ADMINISTRATIONS AND MAY NOT REFLECT THE PRIORITIES AND POLICIES OF THE CURRENT ADMINISTRATION.** THE OBJECTIVE OF THIS SABBATICAL PROJECT IS TO EVALUATE THE IMPACT OF EROSION ON CROP HEALTH. THE PI POSTULATES THAT FARMERS ARE MORE WILLING AND INTERESTED IN ADOPTING EROSION CONTROL MEASURES AND SUSTAINABLE LAND MANAGEMENT PRACTICES WHEN THEY CAN QUANTIFY THE IMPACTS OFEROSION ON CROP GROWTH.I PROPOSE TO SPEND A SABBATICAL YEAR DEVELOPING REMOTE SENSING TECHNIQUES (RGB, MULTISPECTRAL, HYPERSPECTRAL AND THERMAL IMAGING) TO EVALUATE CROP HEALTH ON DISSECTED LANDSCAPES OF THE QUAPAW TRIBAL LANDS IN NORTHEASTERN OKLAHOMA. THE LANDCOVER IN THE REGION IS PREDOMINANTLY FORESTED, HOWEVER ABOUT 25% OF THE LAND, INCLUDING THE RECLAIMED MINE AREAS, IS USED FOR FORAGE AND CROP PRODUCTION ON THE TERRACES, VALLEYS, AND FLOODPLAINS. VERY LITTLE SOIL RESOURCE DATA IS AVAILABLE ON TRIBAL LANDS, HOWEVER RECENTLY, WINZELER ET AL. (2023) DEVELOPED A RASTER-BASED SOIL MAP OF THE QUAPAW TRIBAL LANDS AT A 10 M RESOLUTION. THIS INFORMATION, COUPLED WITH A RECENTLY DEVELOPED DIGITAL SOIL MAP OF SOIL PROPERTIES AT THE SURFACE (0-15 CM) AND NEAR SURFACE (15-30 CM) OF THE 22,880-HA RESERVATIONMAKES THIS AN IDEAL LOCATION TO IMPLEMENT THIS STUDY. AS A CONTRAST TO THESE DISSECTED LANDSCAPES IN THE QUAPAW TRIBAL LANDS, CO-HOST DR. DANIELS MANAGES OVER 40 EDGE-OF-FIELD WATER QUALITY MONITORED WATERSHEDS ACROSS THE ARKANSAS DISCOVERY FARM NETWORK, OF WHICH MANY ARE LOCATED ON THE SAME PHYSIOGRAPHIC REGION AS THE QUAPAW TRIBAL LANDS. MANY OF THESE MONITORED FIELDS ARE ON HIGHLY PRODUCTIVE FARMLAND WITH VERY LITTLE EROSION MAKING THEM IDEAL LOCATIONS FOR COMPARISON OF EROSION IMPACTS ON CROP HEALTH.