Table of Content: Rain accumulation Aphid Risk Fire Blight Biology Fire Blight on Pears Model Cougar Blight for Pears Model Blossom Blight for Pears Graphical Presentation Fire Blight on Pears Practical Use Fire Blight on Pears Chilling Portions Pear Scab Fabraea Leaf Spot Brown Spot (Stemphylium versicarium)