Extension Service Site Publications

• (2024) Management Guidelines for the Clover Seed Weevil in Oregon White Clover Seed Production Clover seed weevils feed on developing white clover seed, damaging the crop. This pest has become resistant to certain pesticides. Learn alternate management strategies.
• (2024) Billbug Species Complex in Grass Seed Production Systems of Oregon: Characteristics, Impact and Management Options Billbugs are pests you may see in turf grasses or in grass seed production. Learn the characteristics of billbug feeding damage, their impact on grass seed crops and effective management strategies.
• (2024) Integrated Pest Management Guidelines and Biocontrol of Cereal Leaf Beetle in the Pacific Northwest For years, a small wasp has helped control the cereal leaf beetle, a pest of grass and cereal grains. But now beetle numbers are climbing. Here are some options to reduce this pest's impact on crops.
• (2022) OSU Extension-led team searches for chlorpyrifos alternatives for controlling insect pests in Oregon grass seed crops The Environmental Protection Agency recently banned the insecticide chlorpyrifos due to concern over the chemical’s neurological impacts on humans, so Oregon's grass seed industry needs immediate solutions for insect control.
• (2021) Pocket Guide to Grass Seed Pests and Beneficials: Identification, Monitoring, Management Learn to identify common pests and beneficial insects found in grass seed production fields across Oregon. Discover where pests are found, learn signs of damage and determine thresholds.
  
  
• (2020) Omnivorous Leaftier A ubiquitous and often minor pest of small grains and other seed crops of Western Oregon The omnivorous leaftier has a wide host range and is known to cause damage to species from more than 20 plant families. Native parasitoid wasps manage this pest in natural and cropland settings. The first appearance of this insect in Oregon was noted in 1929 on strawberries and Dutch bulbous iris plantations near Portland. Soon, it was reported in Washington and California feeding on strawberry and flax grown for seed, respectively.
• (2020) Invertebrate Pest Management for Pacific Northwest Pastures A well-managed pasture has several ecological and economic benefits. However, several species of arthropods (insects, mites and garden symphylans), and gastropods (slugs) inhabit pastures of the Pacific Northwest of the United States and can diminish those benefits.
• (2024) Cereal leaf beetles pose threat to grain crops The cereal leaf beetle attacks grain crops and damages both plant vigor and grain quality. Sporadic outbreaks in Oregon counties in recent years might be an indication that biocontrol is failing.
• (2022) PNW Insect Management Handbook Covers pesticide safety and toxicity, protecting bees, adjuvants, mixing tables, calibration and biological control. Other sections cover a wide variety of agricultural and nonagricultural products such as commercial vegetables, small fruit, turf and ornamentals, hay and pasture, grains, seeds, home gardens, greenhouses, livestock, poultry, household and public health. Each section describes pests, the damage they do, and recommended management.
  Fully indexed. Revised annually. Revision dates are listed at the start of each article and section.