Rl. Pingel et Lc. Lewis, FIELD APPLICATION OF BACILLUS-THURINGIENSIS AND ANAGRAPHA-FALCIFERA MULTIPLE NUCLEOPOLYHEDROVIRUS AGAINST THE CORN-EARWORM, (LEPIDOPTERA, NOCTUIDAE), Journal of economic entomology, 90(5), 1997, pp. 1195-1199
Field evaluations were made of relative efficacy of 2 subspecies of Ba
cillus thuringiensis Berliner and Anagrapha falcifera multiple nucleop
olyhedrovirus (AfMNPV) to control Helicoverpa tea (Boddie) on corn ear
s. Also, the compatibility of a starch-based additive-a 1:1 mixture of
starch (Mirasperse) and sucrose-was determined when added to the ento
mopathogens. Applications of the 3 pathogens significantly decreased t
he percentage of ears damaged by H. tea and increased the percentage o
f ears with no damage and marketable ears. AfMNPV was as good as or be
tter than the B. thuringiensis products in protecting the corn ear. Th
e starch additive was determined to be compatible with the pathogens b
ut did not enhance their activity.