Plant Pests and Diseases

Biocontrol of azalea lace bugs

By Michael Flores — Posted October 3, 2016

Researchers investigate the use of lacewing predators to combat the pesky pest of rhododendrons.

A tale of two lilacs: Part II — Pubescentes

By Jason Lattier — Posted June 1, 2016

How series Pubescentes changed the horticultural landscape.

Disinfectants: In search of a silver bullet

By Luisa Santamaria — Posted May 3, 2016

Answers to the question, “What is the best product to use for disinfecting tools, benches and greenhouses?”

Soil solarization in container nurseries and field production

By Jennifer Parke — Posted February 1, 2016

Discover this hot tool for managing diseases and weeds in container nurseries and field production.

A tale of two lilacs: Part I — Syringa

By Jason Lattier — Posted January 5, 2016

Among the six series of lilacs, two clades are as different as they are important to the horticulture industry — Syringa and Pubescentes.

Soilborne diseases of nursery crops

By Jerry Weiland — Posted July 1, 2015

USDA-ARS and OSU team up to tackle this pernicious problem

Asian longhorned beetle outbreak reported on Long Island

By Curt Kipp — Posted October 2, 2014

Officials are redoubling their efforts to stamp out the Asian longhorned beetle in New York City and Long Island, according to a report in the New York Times. The invasive insect destroys maple, willow, birch and other trees by laying eggs under the bark. Overwintering larvae destroy infested trees, and their vascular systems, from the […]

Website educates public on invasive pest threats

By Curt Kipp — Posted April 3, 2014

Although the agriculture community is well aware of invasive pests and pathogens — including the emerald ash borer, sudden oak death, the giant African snail, the citrus psyllid, the Asian longhorned beetle and many others — agriculture cannot fight them alone. These pests can be transported unwittingly by the general public; therefore, public awareness is needed to […]

Oregon gets a B- in invasive species management

By Curt Kipp — Posted January 15, 2014

Oregon, as a whole, could be doing better in its fight against invasive species. That’s the verdict from the Oregon Invasive Species Council (OISC), which gave the state a B-minus on its annual Invasive Species Report Card (PDF). That’s down a full letter grade from 2012, when the state received an A-minus. The main difference? […]

USDA revises Phytophthora regulations

By Curt Kipp — Posted January 14, 2014

Update, Jan. 15: The Capital Press agricultural newspaper (Salem, Ore.) has published a news story about the change in rules and what it means, including more in-depth comments from OAN Executive Director Jeff Stone. ——————————— The USDA Animal and Plant Health Inspection Service (APHIS) announced that it has revised regulations (PDF) that are intended to […]