?INSECT PESTS POSE A PERSISTENT CHALLENGE TO TREE FRUIT AND VEGETABLE PRODUCTION, CAUSING DIRECT CROP DAMAGE AND TRANSMITTING PLANT PATHOGENS THAT THREATEN YIELDS. PESTS SUCH AS THE CODLING MOTH AND COLORADO POTATO BEETLE DIRECTLY HARM CROPS, WHILE OTHERS, INCLUDING APHIDS, LEAFHOPPERS, AND PSYLLIDS, ARE VECTORS OF DEVASTATING PLANT PATHOGENS. BECAUSE EVEN A SMALL NUMBER OF PATHOGEN-CARRYING INSECTS CAN GREATLY IMPACT PRODUCTION, GROWERS OFTEN HAVE ZERO TOLERANCE FOR THESE PESTS, LEADING TO WIDESPREAD AND EXCESSIVE PESTICIDE USE. CURRENT CONTROL STRATEGIES RELY HEAVILY ON CALENDAR-BASED PESTICIDE APPLICATIONS OR SIMPLE MODELS THAT ESTIMATE PEST LIFE STAGES BASED ON TEMPERATURE. HOWEVER, THESE APPROACHES DO NOT ACCOUNT FOR KEY ECOLOGICAL FACTORS, SUCH AS POPULATION DYNAMICS, OVERWINTERING SURVIVAL, MIGRATION PATTERNS, AND HISTORICAL FLUCTUATIONS. AS A RESULT, GROWERS MAY APPLY TREATMENTS AT SUBOPTIMAL TIMES, REDUCING PESTICIDE EFFECTIVENESS, INCREASING COSTS, AND EXACERBATING RESISTANCE ISSUES. TO OPTIMIZE PEST MANAGEMENT, THERE IS A NEED FOR PREDICTIVE MODELS THAT IMPROVE THE SPATIAL AND TEMPORAL RESOLUTION OF PEST FORECASTING, ALLOWING FOR MORE PRECISE AND EFFICIENT INTERVENTION. THIS PROJECT ADVANCES AGRICULTURAL PEST FORECASTING BY DEVELOPING AND IMPLEMENTING TIME-SERIES MODELS THAT IMPROVE PREDICTIONS OF WHEN AND WHERE PEST POPULATIONS WILL EMERGE, PEAK, AND DECLINE. BY INCORPORATING HISTORICAL DATA, ENVIRONMENTAL CONDITIONS, AND PEST BIOLOGY, THESE MODELS WILL GENERATE HIGHER-RESOLUTION FORECASTS THAT PROVIDE GROWERS WITH ACTIONABLE INSIGHTS FOR PEST CONTROL. THIS PROJECT WILL INTEGRATE THESE FORECASTING TOOLS INTO A USER-FRIENDLY DECISION AID PLATFORM, ENABLING GROWERS TO OPTIMIZE PESTICIDE APPLICATION TIMING, MINIMIZE UNNECESSARY TREATMENTS, REDUCE OPERATING COSTS, AND ENHANCE CROP YIELDS. BY REFINING PEST PREDICTION METHODOLOGIES AND MAKING THESE TOOLS WIDELY ACCESSIBLE, THIS RESEARCH WILL SUPPORT MORE SUSTAINABLE AND DATA DRIVEN PEST MANAGEMENT STRATEGIES, BENEFITING BOTH AGRICULTURAL PRODUCTIVITY AND ENVIRONMENTAL HEALTH.