The feasibility of managing codling moth, Cydia pomonella (L.), with mixtures
of Bacillus thuringiensis-based microbial and selected chemical insecticides was
studied under laboratory and field conditions. Joint actions (synergism, additivity and
antagonism) of these mixtures were determined for both egg and larval stages. Higher
rates of microbial control agents (MCAs),...
A study of the population dynamics and ecology of the fleas
associated with the gray-tailed vole, Microtus canicaudus Miller, was
conducted on three sites surrounding the city of Corvallis, Oregon.
Over a period of 12 months, 22,641 adult and larval fleas representing
three families and eight species were recovered from...
The seasonal life history of the cereal stem moth (CSM), Ochsenheimeria
vacculella Fischer von Roslerstamm, (Lepidoptera : Ochsenheimeriidae) was investigated
in a commercial field of annual ryegrass in the Willamette Valley, OR from January
1993 to August 1994. Phenology of life stages, effect of temperature on eclosion, and
development of...
The tracheal mite, Acarapis woodi (Rennie), parasitizes the
honey bee, Apis mellifera L., an insect used extensively by humans
for pollination of domestic crops and for bee products, primarily
honey.
This parasite was first discovered in 1921 on the Isle of
Wight, a small island situated in the English Channel...
Peppermint, Mentha piperita 'Black Mitcham' was established as a host for tomato
spotted wilt virus-impatiens serotype (TSWV-I). TSWV-I infection of peppermint,
initially observed in a research greenhouse (Corvallis, OR), included stunting and
downward curling of leaves accompanied by bronzing, and occasionally tip necrosis.
Young leaves appeared either symptomless, deformed, or...