2012 Update on Christmas Tree Topics

Christmas tree specialist, Chal Landgren, gives an update of shipping and exporting issues, disease and pest management and current resources for growers.

Taking Aim at Pests

Management

An initial report on research conducted on two intelligent, or precision, sprayers designed for use in the ornamental horticultural industry. The goal of this research is to develop efficient and affordable sprayers that use technology to respond to crop size and presence.

Small and Mite-y

Nursery crops

Oregon State University researchers discuss their investigation of a new microscopic pest, eriophyid mites, which causes damage to linden trees. Identification and detection, distribution and behavior, and damage and control strategies are specifically discussed.

When Mite Makes Right

Nursery Crops
Comprehensive guide on how to control spider mites in the nursery biologically by using predatory mites. Predatory mites are tiny little animals whose appetite for spider mites makes them a great tool for suppressing and managing mite outbreaks.

A Systematic Approach to Diagnosing Plant Damage

Management
A comprehensive guide for determining the difference between nonliving and living causes of plant damage. The authors also provide a list of available references for identifing plant problems, references topics vary from general plant problem diagnosis to crop specific.

Resistance of Pests to Pesticides

Insects
Information on methods designed to reduce and/or prevent pesticide resistance build up in insect or mite populations. Topics addressed include background information on resistance, pest biology, pesticide use, proper pesticide use and application.

New Insect and Mite Pests of Conifers

Insects
The Oregon State University affiliated author discusses several pests of conifers and possible controls. The pests addressed include an eriophyid mite ("leaf vagrant" type), coneworms (Dioryctria), and a spider mite (Eotetranychus libocedri).

Gladiolus-Postharvest Handling of Gladiolus Corms

Post Harvest
Guide for the prevention and control of Stromatinia, Curvularia, Botrytis, Fusarium corm rot, thrips, nematodes, bulb mites and aster yellows mycoplasm. Information provided on how to cure and store gladiolus corms, dormancy, and Rhizoctonia solani.

Fuchsia Gall Mite Management

Greenhouse Crops
A management guide for the fuchsia gall mite (Aculops fuchsiae Keifer) which, causes twisting and distortion of the leaves along with reddening and swelling of tissues. Information is provided on fuchsia gall mite lifecycle, fuchsia cultivars, and control.

Eriophyid Mites on Pine

Christmas Tree
An informative discussion regarding eriophyid mites and their effect on Scotch, Australian, red, and white pines. Symptoms of eriophyid mite injury on pines, biology and control methods, and monitoring are the topics the author focuses on.

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