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New tree puller increases yield 20%Author(s): E. Kerr
Source: Popular Science 210(5):12
Publication Series: Miscellaneous Publication
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DescriptionA new tree harvester that extracts both taproot and stem makes a pine tree 20 percent more useful. The machine shears the lateral roots close to the taprrot and then plucks the entire tree from the ground like a carrot. The concept was developed by Dr. Peter Koch at the U.S. Forest Service's Southern Forest Experiment Station in Pineville, La. The shearing apparatus is mounted on a John Deere 544 or Caterpillar 920 prime mover, which serves as a crane.
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CitationKerr, E. 1977. New tree puller increases yield 20%. Popular Science 210(5):12
- Effect of tree roots on a shear zone: modeling reinforced shear stress.
- Development of a puller-buncher for harvesting southern pines with taproot attached
- Effect of Six Site-Preperation Treatments on Piedmont Loblolly Pine Wood Properties at Age 15
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