Biological Control at National Entomology and Plant Pathology
Meetings The following is a continuation of brief summaries of
some presentations made at the joint Meeting of the
Entomological Society of America and American Phytopathological
Society in Las Vegas (see previous issue). 1. Biological control
of plant frost injury and fire blight disease with a competitive
bacterium: ecological principles and practice - S. Lindow, Univ.
California The practical use of BlightBan--which outcompetes the
bacterium that causes fire blight to prevent infection--involves
making sprays at just the right time. Too early and the flowers
that need protection won't be open; too late and the fire
blight-causing bacteria are already there and can't be stopped.
Recommendations are application at 20% bloom, again at full
bloom and once more at 2 weeks past full bloom. 2. Preliminary
evaluation of Beauveria bassiana for adult suppression of
western corn rootworm - B. Mullock, USDA, Brookings, SD Twenty-
one isolates of the fungus B