FOR MOST CROPS,WATER IS CRITICAL FOR PRODUCING HIGH YIELDS. EVEN SHORT PERIODS WITHOUT ADEQUATE SOIL MOISTURE CAN PERMANENTLY DECREASE YIELD POTENTIAL. YET MOST GROWERS DO NOT USE SCIENCE-BASED METHODS TO MANAGE SOIL MOISTURE. OUR PROJECT'S VISION IS TO DELIVER A TRULY DISRUPTIVE MOBILE APPLICATION (APP), WHICH OFFERS INTELLIGENT MANAGEMENT OF IRRIGATION SCHEDULING FOR THE MOST EXTENSIVELY IRRIGATED AGRONOMIC CROPS IN THE UNITED STATES - CORN, COTTON, PEANUT AND SOYBEAN. THE APP WILL BE COST-FREE, ENGAGING, DYNAMIC, AND PROVIDE ACTIONABLE INFORMATION TO USERS. IT WILL BE CUSTOMIZABLE TO INDIVIDUAL MANAGEMENT ZONES WITHIN FIELDS AND OUR EXPECTATIONS ARE THAT IT WILL RESULT IN IRRIGATION WATER USE EFFICIENCY GAINS OF UP TO 40% WHEN COMPARED TO STANDARD GROWER METHODS. THE APP WILL LEVERAGE IRRIGATION SCHEDULING APPS THAT OUR TEAM HAS ALREADY DEVELOPED. THE APP WILL USE METEOROLOGICAL DATA FROM MULTIPLE SOURCES, SATELLITE IMAGES, AND THE USDA NRCS SSURGO TO DRIVE MODELS THAT WILL ESTIMATE DAILY PLANT AVAILABLE SOIL WATER AND SOIL NITROGEN WITHIN THE ROOT ZONE. THE APP WILL SEND NOTIFICATIONS TO THE USER WHEN IRRIGATION IS NEEDED. OUR PROJECT CONSISTS OF THREE PHASES - APP DEVELOPMENT, FIELD-TESTING, AND ON-FARM EVALUATION TO PROMOTE ADOPTION AND USE OF THE APP. WE WILL DELIVER AN EASY-TO-USE IRRIGATION MOBILE APP THAT INTEGRATES SITE-SPECIFIC WEATHER, SENSOR, AND MODEL-BASED DATA FOR DECISION-MAKING.