Growing Knowledge archive

Note: This article is part of the Growing Knowledge series in Digger magazine. This series is provided by Oregon State University in collaboration with the United States Department of Agriculture and in partnership with the Oregon Association of Nurseries.

Here comes the sun

By Jennifer Parke — Posted December 28, 2018

Researchers continue to evaluate soil solarization as a weed management technique By Carol Mallory-Smith, Jennifer Parke and Nami Wada In 2017, nursery and greenhouse producers added $947.7 million to Oregon’s economy, according to the Oregon Department of Agriculture. And for this very valuable Oregon industry, and all agricultural systems, weeds are a major issue impacting […]

Turf care without herbicides

By Alec Kowalewski — Posted November 26, 2018

Research evaluates the use of IPM for weed control on turfgrass By Emily Braithwaite, Brian McDonald, Tim Stock and Alec Kowalewski It is speculated that proper cultural management practices can reduce weed populations in turfgrass without the use of herbicide applications. With new laws restricting access to certain pesticides within turfgrass management and increased pressure […]

The ‘tangled root ball’

By Sherri Noxel — Posted October 24, 2018

Family-owned businesses must balance work, ownership and family roles Each June, family business owners interview with a panel of peers to compete in the Excellence in Family Business Awards. Judges consistently ask each CEO how they carve out time for their family. To date, the most memorable — and perhaps practical — “policy” came from […]

Up in the air

By Lloyd Nackley — Posted September 25, 2018

The popularity of drones, aka unmanned aerial vehicles or systems (UAVs/UASs), has dramatically increased over the past decades. Like global positioning (GPS) technology, walkie-talkies and Jeeps, drones initially were developed for military use. Although the U.S. Air Force’s Predator and Reaper drones continue to appear on the evening news, and as a plot device in […]

Treating and tracking the intractable Rhodococcus

By Melodie Putnam — Posted September 2, 2018

Leafy gall disease is like an unnoticed leak: what starts out small can get worse and end up causing significant losses. Leafy gall is caused by the bacterium Rhodococcus, which afflicts annuals, herbaceous perennials, and woody broadleaf plants. The bacteria cause a ball-like mass of buds that only partially expand into stunted shoots. These shoots […]

Let it bee

By Andony Melathopoulos — Posted July 31, 2018

The Oregon Bee Project will help explore market opportunities for nurseries Oregon nursery operators play an important, but frequently overlooked, role in protecting pollinator health. They produce pollinator attractive plants that are destined to be planted in urban areas across the United States. These plants provide bees with pollen and nectar resources and contribute to […]

Ozone in the low zone

By Jay Pscheidt — Posted June 25, 2018

These oxygen molecules in the lower atmosphere, also known as smog, can damage growing plants During the summer, attention turns to air quality all over the western United States, as smoke from hot forest fires fills our valleys. Most of the smoke is made of small particulates that are not known to damage plants. At […]

The emerald ash borers are coming (eventually)!

By Sarah Greenleaf — Posted May 25, 2018

An impending threat to Oregon’s urban ecosystems If it’s not on your radar yet, it will be soon: The age of ash trees (Fraxinus, sp.) in the United States is winding down as the emerald ash borer (EAB) slowly follows a western route across the country, leaving a path of destruction in its wake. EAB […]

Optimum watering schedules for Oregon home lawns

By Alec Kowalewski — Posted April 30, 2018

By Conner Olsen and Alec Kowalewski In times of drought, outdoor water-use restrictions are most often focused on landscape water use, and implemented in terms of the number of days per week for which watering is allowed. This method, although effective at reducing water use, neglects to consider ideal irrigation frequency for maintaining the health […]

Flora at your fingertips

By Linda K. Hardison — Posted March 27, 2018

Revised, rebranded OregonFlora has new and expanded plant information Looking for an online resource with information about the native and naturalized plants of Oregon? The Oregon Flora Project’s newly expanded website, OregonFlora, will meet the need. Rich with details about more than 4,670 unique species of ferns, conifers, herbs, grasses, and trees, it presents information […]