Tree Fruit Research and Extension Center
WSU-TFREC is the research and extension center of Washington
State University dedicated to the tree fruit sciences. Located
in the primary fruit producing region of the world, the center features
a cooperative, multidisciplinary approach to tree fruit production.
This Areawide II Program builds on the successful codling
moth areawide management project (1995-1999) that reduced in-season
organophosphate use in apples and pears by 75%. Project goals are
to further reduce broad-spectrum pesticide use, expand the use of
mating disruption in pome fruits and new cropping systems, and increase
efficacy of biological control in orchards for secondary pests.
Apple and pear production are at risk under the Food
Quality Protection Act (FQPA) because these fruit comprise a
significant fraction of the diets of infants and children.
Fruit Research at WSU Prosser
A Lygus bug parasitism survey revealed moderate levels of wasp parasitism
in several stone fruit growing regions. Studies of thrips ecology
showed greater thrips abundance in orchard borders compared with
orchard interiors. Click on link below.
Research at WSU Prosser
For Lygus abundance surveys, sweep net sampling was the most effective
sampling method. Lygus damage was correlated to Lygus abundance
in apples. A California phenology model was utilized to predict
first Lygus hatch. Thrips abundance was greater in orchard borders
compared with orchard interiors. Click on links below.
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