INCREASING REGULATORY, CONSUMER AND MARKET PRESSURES DEMAND PEACH PRODUCTION WITH LESS CONVENTIONAL PESTICIDE INPUT. TO MEET THIS NEED WITHOUT COMPROMISING YIELD, FRUIT QUALITY, OR OTHER ASPECTS OF PRODUCTION, WE PROPOSE TO DEVELOP AND VALIDATE A WEB-BASED DISEASE RISK ALERT SYSTEM THAT WILL REDUCE THE NUMBER OF REQUIRED FUNGICIDE AND BACTERICIDE APPLICATIONS BASED ON WEATHER-INFORMED ASSESSMENT OF DISEASE RISK, OPTIMIZE SAFER PRODUCT MIXTURES CONSISTING OF BIOLOGICAL CONTROL AGENTS (BCAS) AND LOW RATES OF DMI FUNGICIDES (BCA STRATEGIC MIXTURES), EVALUATE THE COMBINATION OF THE DISEASE RISK ALERT SYSTEM WITH BCA STRATEGIC MIXTURES FOR DISEASE MANAGEMENT, PHYTOTOXICITY, YIELD AND FRUIT QUALITY, AND RESISTANCE SELECTION IN BACTERIAL AND FUNGAL PATHOGEN POPULATIONS, AND CONDUCT OUTREACH ACTIVITIES TO DISSEMINATE RESEARCH RESULTS TO STAKEHOLDERS, EXTENSION PERSONNEL, AND THE SCIENTIFIC COMMUNITY. THIS PROJECT WILL DELIVER A WEB- AND MOBILE PHONE-BASED DISEASE RISK ALERT SYSTEM WITH SAFER PESTICIDE MIXTURES TO MANAGE IMPORTANT DISEASES OF PEACH WITH REDUCED CONVENTIONAL PESTICIDE USAGE. THE EXPECTED PROJECT OUTCOMES INCLUDE REDUCING CONVENTIONAL PESTICIDE INPUT AND ASSOCIATED NEGATIVE IMPACT ON HUMAN HEALTH AND ENVIRONMENT, REDUCED OCCURRENCE OF CHEMICAL RESISTANCE TOLERANCE IN PATHOGEN POPULATIONS, AND INCREASED ECONOMIC RETURN (COST SAVINGS DUE TO FEWER SPRAYS) IN SOUTHEASTERN PEACH PRODUCTION. THE PROJECT WILL BENEFIT PEACH PRODUCERS, FIELD WORKERS, CONSUMERS, AND STRENGTHEN THE SUSTAINABILITY AND PROFITABILITY OF THE PEACH INDUSTRY.