Start Date: Aug 27, 2012
End Date: Aug 26, 2013
Advanced breeding selections and newly released potato varieties from State and Federal potato breeding programs will be entered into these National Late Blight Germplasm Evaluation Trials. These, along with known late blight differentials and standard check varieties, will be grown in replicated trials at several locations and evaluated for disease reaction at weekly intervals following either the first occurrence of late blight or inoculation with Phytophthora infestans. Area-under-the-disease-progress-curve will be calculated and analyzed. Trials are conducted at several locations to maximize exposure to different growing environments and possible variations in the pathogen population. This allows the data to be subjected to stability analysis.