Detection & Control of Pathogens in the Water

Irrigation
The authors discuss the importance of water quality in regard to irrigation water, the source of the water used, and the various pathogens it could contain. Detection of pathogens in water, control methods, and a titration method for chlorine content are addressed.

Avoiding Pesticide Phytotoxicity

Plant disorders
The University of Florida affiliated author addresses how to avoid pesticide phytotoxicity in ornamental plants. The five most common types of phytotoxicity identified are; burn, necrosis, chlorosis, leaf distortion, and stunting or abnormal growth.

New Resource -- Conserving Pot Facilitates Easy Plant Care!

Management
Technological advances in container design are discussed by the Oregon State University affiliated author. A comparison of the standard pot design and a new pot design in relation to plant growth, container media, and function.

Thermometer Accuracy

Management
The importance of thermometer accuracy in regard to energy conservation in the greenhouse is discussed by the Washington State University affiliated author. Directions are provided, instructing the reader on how to properly calibrate a thermometer.

Penta Treated Greenhouses-A New Angle

Greenhouse Crops
The use of PENTACHLOROPHENOL to treat wooden greenhouses against degradation is discussed by the author. PENTA was toxic to plants but the author includes a letter from an individual who used a different method involving PENTA and epoxy paint. The grower was able to successfully propagate plants in the treated greenhouse.

Polyethylene Liner Helps Stabilize Lily Bulb Pack

Bulbs
A small pilot experiment was carried out to test the effectiveness of the use of plastic liners and different packing materials against desiccation, shrinkage, and sprouting of Easter lily bulbs intended for forcing. The author was interested in standardizing the packing method used for Easter lily bulbs.

Effects of Weathering on Plastic Film Tested

Management
Several different greenhouse plastics were tested in a cooperative study at experiment stations in Oregon, California, Ontario, Canada, Mississippi, New York, and Virginia. The study tested the weathering of twenty experimental plastic films that were not commercially available at the time.

Christmas Tree Economics: Establishing and Producing Douglas-Fir Christmas Trees in Western Oregon

Christmas tree
A helpful publication for anyone considering growing Douglas-fir Christmas trees or for current growers. Covers cost of production and provides necessary tools for financial management and decision making.

Christmas Tree Economics: Establishing and Producing Noble Fir Christmas Trees in Western Oregon

Christmas tree
A helpful publication for anyone considering growing Noble Fir Christmas trees or for current growers. Covers cost of production and provides necessary tools for financial management and decision making.

Christmas Tree Nutrient Management Guide for Western Oregon and Washington

Christmas tree
This guide is designed to help Christmas tree growers learn to assess a plantation’s nutritional needs based on soil and foliar analyses and rotational timing. It will help you design strategies for effective nutrient applications and produce high-quality trees with minimal negative environmental impact.

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