Clive Kaiser

Distribution and Monitoring of Grape Mealybug: A Key Vector of Grapevine Leafroll Disease in Oregon

A pheromone lure baited with the sex pheromone of grape mealybug is the most reliable way to confirm the presence or absence of this important vector of grapevine leafroll-associated viruses.

Daniel Dalton, Vaughn Walton, Kent Daane, Clive Kaiser, Rick Hilton, Linda Brewer | Apr 2024 | Extension Catalog publication

Sweet Cherry Rootstocks for the Pacific Northwest

Cherry growers have many options when it comes to choosing rootstocks. The combination of new dwarfing rootstocks with high-density training systems leads to earlier production. But growers need to consider soil ...

Lynn Long, Clive Kaiser, Ashley Thompson | Sep 2021 | Extension Catalog publication

Grape Phylloxera: Biology and Management in the Pacific Northwest

Describes the life cycle and injury symptoms of grape phylloxera, Daktulosphaira vitifoliae (Fitch), an aphidlike insect that feeds on grape roots. Discusses strategies for reducing the risk of phylloxera infestation, ...

Patricia A. Skinkis, Vaughn Walton, Clive Kaiser | Jul 2021 | Extension Catalog publication

Recognize the Symptoms and Causes of Stunted Growth in Vineyards

Spring frost, herbicide drift, water or nutrient stress, diseases, and insect and mite pests can cause similar symptoms of stunting or distorted growth in grapevines. Recognizing the symptoms and distinguishing their ...

Patricia A. Skinkis, Vaughn Walton, Amy J. Dreves, Clive Kaiser, Steve Renquist, Steve Castagnoli, Rick Hilton, Linda Brewer | Jan 2020 | Extension Catalog publication

Understanding and Preventing Sweet Cherry Fruit Cracking

Fruit cracking in sweet cherries can have a severe economic impact in the Pacific Northwest, even with new optical sorters. This publication helps growers understand the causes of cracking and describes cultural practices that can minimize cracking.

Clive Kaiser, Lynn Long, Linda Brewer | Feb 2019 | Extension Catalog publication

Prevención y manejo del virus del enrollamiento de la hoja y de los piojos harinosos en viñedos del estado de Oregon

Este documento sugiere prácticas que se cree reducen la propagación de enfermedades y virus.

Vaughn Walton, Amy J. Dreves, Patricia A. Skinkis, Clive Kaiser, Marcus A. Buchanan, Rick Hilton, Robert Martin, Steve Castagnoli, Steve Renquist | Jan 2018 | Extension Catalog publication Peer reviewed (Orange level)

Trissolcus japonicus: Avispa parasitoide prometedora para el manejo de la chinche hedionda marrón marmoleada (CHMM)

La avispa Trissolcus japonicus es una parasitoide que ataca a los huevos de la chinche hedionda marrón marmoleada (CHMM), una plaga de cultivos comerciales y huertos caseros. Por lo tanto, la Trissolcus japonicus ...

David Lowenstein, Chris Hedstrom, Nik Wiman, Heather Andrews, Richard Hilton, Clive Kaiser, Jana Lee, Vaughn Walton | Apr 2017 | Extension Catalog publication Peer reviewed (Orange level)

Green Pea Nutrient Management Inland Northwest -- east of the Cascades

Describes management practices for east of the Cascades that are essential to optimize green pea crop response to fertilizer inputs. These include soil pH, crop rotation, and inoculation; and recommendations for fertilizer placement and specific nutrients.

Clive Kaiser, Donald A. Horneck, Richard T. Koenig, Lyndon Porter, Linda Brewer | Apr 2016 | Extension Catalog publication

Sweet Cherry Orchard Establishment in the Pacific Northwest

Regularly producing sustainable yields of high-quality cherries is possible only where site and other conditions are near optimal. Properly evaluating a prospective orchard location, determining available resources, and ...

Lynn Long, Clive Kaiser | Feb 2013 | Extension Catalog publication

Sweet Cherry Orchard Establishment in the Pacific Northwest

Regularly producing sustainable yields of high-quality cherries is possible only where site and other conditions are near optimal. This publication summarizes factors to consider when establishing a cherry orchard ...

Lynn Long, Clive Kaiser | Feb 2013 | Extension Catalog publication

Consideration and Resources for Vineyard Establishment in the Inland Pacific Northwest

This guide is primarily designed to address factors and critical questions that potential owners need to consider before establishing a new vineyard in eastern Washington, eastern Oregon, or western Idaho.

Michelle Moyer, Clive Kaiser, Joan Davenport, Patricia A. Skinkis | Jul 2012 | Extension Catalog publication

Protecting Grapevines from Winter Injury

Winegrape production in the Pacific Northwest has expanded into areas where low winter temperatures periodically cause cane damage or death. Canes can be protected from freeze damage by burying them or covering them...

Clive Kaiser, Patricia A. Skinkis, Mercy Olmstead | Mar 2008 | Extension Catalog publication