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An Improved Method of Collecting and Monitoring Pine Oleoresin

A new method of collecting and monitoring pine oleoresin has been developed through a cooperative project involving MTDC, Brian Strom of the Southern Research Station, and the Forest Health Technology Enterprise Team. Oleoresin yield has become an increasingly popular measure of the health of pine trees. Oleoresin appears to increase the ability of a tree to resist the attacks of bark beetles and other pests.[photo] pine oleoresin samplers

In the past, oleoresin has been collected in open containers that allowed samples to be contaminated by rain or falling debris.

Keith Windell, an engineer at MTDC, used computer-aided design software to redesign the sampler. After testing a series of prototypes, Windell came up with a new collection sampler that resists contamination from outside elements and is reliable, inexpensive, and reusable. This new sampler represents an important improvement for collecting pine oleoresin.

The new samplers can be ordered from MTDC for about $1.50 each when ordered in lots of 1,000. They are not kept in stock, so please allow for manufacturing time when ordering.

To order the oleoresin samplers or for more information on the project, contact Dick Karsky, program leader (phone: 406-329-2921; e-mail:

A tech tip describing the new sampler, An Improved Method for Collecting and Monitoring Pine Oleoresin (0434–2306–MTDC), is available at: 2306

To order the tech tip, contact Cailen Hegman, MTDC publications (phone: 406–329–3978; fax: 406–329–3719; e-mail:

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