The Downside of Combination Fungicides

Greenhouse crops

A comprehensive discussion about the issues concerning pre-packaged fungicide mixes, which can elevate the risk of developing pathogens that are resistant to treatment. Strategies for avoiding resistance are included in the discussion.

Understanding Container Moisture

Container media

Researchers at Oregon State University have been studying how soilless substrates can be used together with moisture monitoring equipment to get the best results while reducing the need to irrigate. Topics specifically addressed include soilless substrate and water management.

Safe Procurement and Production Manual

Nursery crops

A systems approach for the production of healthy nursery stock. The manual, published by the Oregon Association of Nurseries, is divided into 3 main parts. A systems approach introduction, voluntary best practices for your nursery, and the next step: systems approach certification.

Live plant imports: the major pathway for forest insect and pathogen invasions of the US

Insects

A discussion about live plant imports as an important invasion pathway for non-native plant pests. The authors discuss the effect of current regulation, the need for updated regulation, and the recent and proposed changes to plant import regulation.

Testing Two Genera

Nursery Crops
Plant trials featuring Arctostaphylos and Grevillea varieties were conducted at Oregon State University North Willamette Research and Extension Center (NWREC). The purpose of the trials was to evaluate the plants performance in the landscape.

Ebb and Flow From an Engineer's Viewpoint

Irrigation
Agricultural engineering specialist affiliated with the University of Connecticut discusses the benefits of using an ebb and flow irrigation system in a greenhouse environment. Examples of crops successfully grown using the ebb and flow system are provided.

Plant Pathogens - Plant Diagnosis Clinic

Plant Disease
An overview of the B.C. Ministry of Agriculture and Fisheries plant diagnosis clinic at Cloverdale. The author discusses the history of the clinic, types of specimens examined, identified diseases and associated crops, and grower losses due to disease.

Think Spring, Gardening, and Bedding Plants

Greenhouse Crops
A brief discussion about the popularity of bedding plants from a marketing perspective and which ones are the best sellers. The Pennsylvania State University affiliated author provides a table listing the best selling bedding plants and a USDA floriculture crops summary table.

Getting to the Root (and Corm) of Cyclamen Diseases

Greenhouse Crops
An informative discussion about common Cyclamen diseases. The author addresses Botrytis, Pythium, Thielaviopsis, Rhizoctonia, Fusarium, and Erwinia. Descriptions of pathogen symptoms and signs are provided along with possible control options.

Maintaining Disease-Free Geranium Stock Plants...The Impossible Dream?

Greenhouse Crops
The Oregon State University affiliated author discusses methods and practices used to reduce or eliminate disease in geranium stock plants. Common geranium pathogens include Botrytis, Pythium, Rhizoctonia, Thielaviopsis, Xanthomonas, and Verticillium wilt.

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