Landscape-scale intensification of individual crops and pesticide use that is associated with this change is a problem that has had unequal effects on pests with different lifecycles, host ranges, and dispersal abilities. Understanding the fundamental connections between agricultural intensification and pests remains a major obstacle to improving the long-term sustainability of modern agriculture. In this…

Cucurbit downy mildew exhibits significant long distance dispersal within the continental United States. The disease is characterized by annual extinction and recolonization cycles that make it an excellent model system to understand and quantify epidemic expansion in both time and space. Using disease records collected as part of a cucurbit downy mildew monitoring system, the…