Botrytis Cinerea

Plant Disease
Botrytis blight ( Botrytis cinerea), also known as grey mold, is one of the common diseases of greenhouse crops. Descriptions of general symptoms and symptoms on flowers, leaves, seedlings, and stems are provided along with cultural and chemical management programs.

Electrical Conductivity and How to Use Your Salt Meter

Electrical conductivity or 'salts' in soils and media are addressed by the author in terms of what a salt meter does, what electrical conductivity means, and how the information can help the grower. Several methods used to do electrical conductivity readings are included.

Root Death in the Landscape

Nursery Crops
A discussion about the importance of plant root health in the landscape environment and the factors that can influence root system health. The authors address a variety of topics that influence root health ranging from nursery production methods to landscape practices.

European Crane Fly

Washington State University affiliated entomologist discusses the European crane fly (Tipula paludosa) and it's impact in the Pacific Northwest. Topics addressed include it's introduction into North America, lifecycle, biological and environmental controls, and chemical controls.

Christmas Tree Weed Identification and Control

Christmas Tree
Informative look at weed identification and control in Christmas tree production by Oregon State University affiliated researchers, Ed Peachey and Chal Langren.

Beyond Skogholm Cotoneaster: Performance of Hydrangea, Azalea, Juniper and Spirea in a Clay Amended Substrate

Nursery Crops
Research was conduced on the effect of using a clay-amended substrate to improve nutrient and water efficiency for plants in containers. The presentation includes detailed results on the performance of the different plants used.

Amendments That Improve Water Retention

Container Media
Studies were implemented to determine if specific amendments could improve water retention in an effort to reduce the amount of water, nitrogen and phosphorus inputs needed.

Mineral Nutrient Deficiencies and Toxicities

The following minerals are addressed in the Octoberpest 2006 presentation: nitrogen, phosphorus, ammonium, magnesium, potassium, sulfur, calcium, boron, copper, zinc, salt, and fluoride.

Irrigation Decisions: When and How Much?

A discussion about the factors to consider when making irrigation decisions involving container plants in the nursery environment. Topics include leaching, irrigation timing, substrate material, and plant architecture.

Substrate Properties: How to Measure and Manage Them

Container Media
Presented by Jim Owen at the 2006 North Willamette Research and Extension container workshop, a discussion about substrate in containerized production.