This site is a project of the Cornell Vegetable Program Work Team (PWT). This web resource is designed to enhance access to Cornell's vegetable production resources. For more information, please contact: Chris Smart – This page was created by Martha Sudermann – 2021 Cornell University.

Applying chemical treatments: To find approved fungicides, consult the Cornell Integrated Crop and Pest Management Guidelines for Vegetable Crops available at.If symptoms are noticed in localized areas, take swift action to remove those plants and their surrounding healthy neighbors via disking or flaming. Therefore, be sure to pay particular attention to these vulnerable areas. Remaining vigilant/Scouting: Initial symptoms will most likely be observed in low-lying areas of the field, areas with continual shade, or along hedgerows.Forecasting: Frequently check for late blight outbreaks throughout the U.S.Rotate away from solanaceous crops for three years. The pathogen will survive in tubers or potentially in tomato fruit that are in a cull pile and can be a source of inoculum the next year. Sanitary practice: Properly dispose of infected tubers by burying them if possible.Planting resistant varieties: There are potato and tomato varieties that are resistant to late blight, however most are not.Take preemptive measures to limit the spread of late blight:

Late blight tomatoe