Integrated Pest Management Summit Reveals Barriers, Needs, and Goals for Agricultural Extension

Integrated pest management (IPM) continues to be an area of great importance for agricultural Extension. However, there are barriers to implementation. To advance understanding of current status, barriers, and needs in IPM Extension, we organized a 1-day IPM summit for Oregon State University agricultural Extension faculty. Over 50 faculty attended from various departments and programs. We report on the process and highlight the top barriers, needs, and goals revealed. We hope to stimulate similar meetings among other agricultural Extension professionals and enhance Extension professionals\u27 collective understanding of barriers to IPM to reveal pathways for progress

Evaluation and cost analysis of alternative residue management methods for Kentucky bluegrass seed production in the Grande Ronde Valley

The production of high quality grass seed is important to the agricultural economy of the Grande Ronde Valley (GRV) of eastern Oregon. The predominate grass seed crops grown in the area are Kentucky bluegrass and fine fescues. Historically, open-field burning has been an effective, economical means by which to remove residue and maintain seed yield and quality. The continued concern for air quality and public health have led to the adoption of alternative residue management methods that place less reliance on open-field burning of full straw residue loads

Afternoon Ascospore Release in Claviceps purpurea Optimizes Perennial Ryegrass Infection

In Kentucky bluegrass (Poa pratensis), Claviceps purpurea, the causal agent of ergot, typically releases ascospores during the early-morning hours, between about midnight and 10:00 A.M., corresponding to time of flowering, when the unfertilized ovaries are most susceptible to infection. During aeromycology studies of C. purpurea in perennial ryegrass (Lolium perenne) in northeastern Oregon during 2008 to 2010 and 2013, a strain of C. purpurea was found that released ascospores in the afternoon, coinciding with flowering in perernrial ryegrass. Under controlled environmental conditions, sclerotia from perennial ryegrass and Kentucky bluegrass released spores in the afternoon and morning, respectively, consistent with tirning of spore release under field conditions. Internal transcribed spacer (ITS) sequences of single sclerotial isolates from Kentucky bluegrass and perennial ryegrass were consistent with C. putpurea, although minor variations in ITS sequences among isolates were noted. Differences between Kentucky bluegrass and perennial ryegrass isolates were observed in random amplified polymorphic DNA. Evidence is provided for adaptation of C. purpurea to perennial ryegrass by means of delayed spore release that coincides with afternoon flowering in perennial ryegrass

An economic comparison of alternative bluegrass residue management practices in Oregon's Grande Ronde Valley

Published February 2009. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalo

Integrated pest management (IPM) for the cereal leaf beetle in Washington State

This bulletin describes how to identify the cereal leaf beetle (Oulema melanopus) and discusses its biology. Scouting techniques and economic thresholds are outlined, along with cultural management methods and optimal times to apply insecticide, if needed. It also discusses the most effective method of control--biocontrol using wasps that only parasitize and kill the cereal leaf beetle. Growers may encourage these free biocontrol agents to multiply in their fields by maintaining a simple insectary. Worksheets and a decision chart are included to help integrate all the decision processes