Aroostook FarmĀ in Presque Isle is the center for agricultural research and development for Maineā€™s potato industry. Blueberry Hill FarmĀ in Jonesboro is the center for agricultural research and development for Maineā€™s wild blueberry industry. Highmoor FarmĀ in Monmouth provides research and development programs for Maineā€™s fruit and vegetable growers. The J. F. Witter Teaching and Research Center