Toxicological studies were carried out to evaluate the
susceptibility of codling moth, Cydia pomonella L. to
different insecticides. Bioassay procedures for adults and
larvae were standardized in terms of posttreatment holding
and temperature, age and sex of insects, insecticide
formulations and selection of a reference strain.
This study detected a...
The pages of this Continuing Education Book contain the papers presented on the Oregon State University campus, March 22-24, 1971 at which time several hundred individuals gathered to learn the requirements for the Oregon Public Employee "Special Applicator" license test. The purpose of this Short Course on Pesticides, Pest Control...
Reversion of resistance to the organotin (OT) acaricide
cyhexatin was documented for the twospotted spider mite,
Tetranychus urticae (Koch), by laboratory isolation of a
field resistant colony. After 22 generations of no
selection the colony reverted back to susceptible.
Studies were conducted in 1985 and 1986 on susceptible
and resistant...
Petroleum oils have been used to suppress insect and mite pests for 100 years. Beginning in the 1880's, when kerosene was first used to control scale and aphids, to the present use of highly refined petroleum derivatives, these products have provided growers with a unique tool in their battle against...