Research on plant hydraulics helps explain the effect of drought stress on shade trees By Sadie Keller, Rebecca Sheridan, Scout Dahms-May, Carolyn Scagel and Lloyd Nackley In Oregon’s Willamette Valley, the heart of the nursery industry, rainfall is scarce during the summer and humidity is low. The plant stress resulting from the low soil moisture, […]
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.
A farmland boom
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Despite soaring interest rates, farmland values in Oregon show no signs of slumping After a record sales year for nursery growers in 2021, the economic outlook for the industry remains mostly positive (McClellan, 2022). One of the main economic issues facing producers is the increasing cost of labor, as general price inflation and a tight […]
Dogging your voles
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Researchers explore whether hounds can assist in timely vole management By Dana Sanchez and Nick Andrews In the big picture, burrowing animals contribute significantly to natural ecosystems and the soils on which our own economies and lives depend. Burrowers contribute to soil aeration, provide nutrients and soil organic matter, participate in redistributing nutrients to the […]
How to catch a thrips
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Rigorous scouting can help manage tip-feeding thrips before they cause irreparable damage By Lloyd Nackley and Melissa Scherr Thrips belong to the insect order Thysanoptera, of which there are several species that are damaging to nursery and ornamental crops. Whether there is only one or many, we call them thrips regardless, just like with other […]
A carbon balancing act
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What effects do mowing, fertilization and irrigation have on carbon sink and sequestration in turfgrass ecosystems? Public concerns about climate change and a growing number of government and business commitments to emissions reductions have increased focus on carbon sequestration in vegetated landscapes as a nature-based climate solution. More specifically, landscapes dominated by plants could be […]
Don’t get burned by charcoal rot
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Soilborne fungus can afflict hebes and a wide range of other host plants Hebes (pronounced heebees) are an interesting group of evergreen shrubs, mainly from New Zealand, although there are also a few from South America and French Polynesia. Botanically, they are now placed in the genus Veronica, but many will know them by their […]
The fight against flatheaded borers
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Oregon State University researchers from the Nackley (nursery) and Wiman (orchards) programs have teamed up with scientists from across the country to study the biology and management of flatheaded borers. Flatheaded borers are beetles, from the order Coleoptera and the Buprestidae family, that can be devastating pests of ornamental trees grown in nurseries, transplanted landscape trees, trees grown for wood or other products, and fruit and nut crops.
An integrated plan of attack against pests
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The Northwest Nursery Crop Research Center (part of the USDA- Agricultural Research Service, or USDA-ARS, Horticultural Crops Research Center) in Corvallis, Oregon recently funded the creation of the first Integrated Pest Management (IPM) Strategic Plan for Oregon’s ornamental nursery industry.
Bred for success
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These are some current and future cultivars from Oregon State University Ornamental Plant Breeding I am in my 13th year at Oregon State University (OSU). Spending more than a decade doing something sounds like a long time, but in the world of woody plant breeding, that is just getting warmed up. That is how I feel […]
A beneficial breath of fresh air
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Testing the use of wintergreen oil to attract beneficials that kill nursery pests By Jana Lee, Victoria Skillman and Katerina Velasco Graham Can minty odors really enhance pest control? When pests feed on a plant, the plant releases odors, one of them being methyl salicylate (MeSA), also known as oil of wintergreen. When MeSA is […]
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