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Pacific Southwest Research Station

 

Pacific Southwest Research Station
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Research Note

Title: Sampling tree tops by helicopter...special pole pruner cuts branchlets

Author: Wear, John F.; Winterfeld, Robert G.

Date: 1966

Source: Res. Note PSW-RN-131. Berkeley, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station. 6 p

Station ID: RN-PSW-131

Description: A new technique for sampling tops of tall Douglas-fir trees by using a special pole pruner from a helicopter has been developed and field-tested. Thee pole pruner cuts and holds a branchlet. Foliage samples collected will be compared by spectral analysis to show the type of aerial imagery that best differentiates healthy trees from those attacked by root rot.

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Citation

Wear, John F.; Winterfeld, Robert G.  1966.  Sampling tree tops by helicopter...special pole pruner cuts branchlets.   Res. Note PSW-RN-131. Berkeley, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station. 6 p.

Last Modified: Jun 10, 2011 07:05:41 PM