Explains the relationship between high soil pH and nutrient deficiencies in blueberries, rhododendrons, azaleas, and other ornamental crops. Color photos illustrate symptoms of pH-induced nutrient deficiency. Presents ...
Donald A. Horneck, John M. Hart, Robert G. Stevens, Steven Petrie, James Altland |
Feb 2004 |
Extension Catalog publicationPeer reviewed (Orange level)
Discusses the processes of manganese (Mn) reaction in the soil, Mn movement in plants, Mn function in plants, results of studies of Mn in Oregon nursery fields, and management practices to prevent Mn deficiency ...
This guide can serve as a starting point for development of nutrient management guidelines for Oregon growers. Recommendations in this guide are based on research performed in the Willamette Valley with other ...
Jim Owen, Dan M. Sullivan, Donald A. Horneck, John M. Hart |
Oct 2010 |
Extension Catalog publicationPeer reviewed (Orange level)
This book contains descriptions of 15 native and 16 nonnative fish (including origin, distribution, key characteristics, size, distinguishing features, color, diet, and other remarks) found in the Willamette River Basin's...
Josh E. Williams, Guillermo Giannico, Brad Withrow-Robinson |
Jun 2014 |
Extension Catalog publicationPeer reviewed (Orange level)
The plants in the field trials were chosen by an advisory group of nursery growers and landscape designers and were evaluated on growth, visual appeal, timing of flowering, density of flowers, physiology and heat tolerance.
Addresses amounts, timing, and sources of nitrogen (N) fertilization for producing cranberry beds in selected North American growing areas. Fertilizer practices for new and young beds are not discussed. Topics include ...
Joan Davenport, Carolyn DeMoranville, John M. Hart, Teryl Roper |
Jun 2000 |
Extension Catalog publicationPeer reviewed (Orange level)
Phytophthora species are water molds that can kill plants. They can spread undetected in container plants and equipment. Once they are introduced to an ecosystem, it's difficult or impossible to eradicate them. ...
Norma Kline, Marianne Elliott, Jennifer Parke, Dan Stark, David C. Shaw, Alicia Christiansen |
Jan 2022 |
Extension Catalog publicationPeer reviewed (Orange level)
Ornamental nurseries face many pest management challenges, from weeds to insects to disease. In this report, industry representatives prioritize those challenges in an effort to increase the use of integrated pest ...
This publication, produced by growers, commodity group representatives, processors, university specialists, and other technical experts from the cranberry industry in Oregon and Washington, outlines major pests, current ...
Katie Murray, Paul Jepson, Cassie Bouska, Kim Patten |
Jul 2018 |
Extension Catalog publicationPeer reviewed (Orange level)