February 1970 Compiled by H.M. Munger, Cornell University, Ithaca, New York 1. Presence of Third Strain of Lima Bean Downy Mildew R.E. Wester U.S. Department of Agriculture, Beltsville, Md. A third strain (strain “C”) of downy mildew of lima beans (Phytophthora phaseoli, Thaxt.) was discovered in the fall of 1969 on G 1 bush lima […]