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A robust productivity benchmark for grapple yarding in fast-growing tree plantations
Conference paper   Peer reviewed

A robust productivity benchmark for grapple yarding in fast-growing tree plantations

Raffaele Spinelli, Riaan Engelbrecht and Andrew McEwan
Proceedings of the 6th International Forest Engineering Conference
International Forest Engineering Conference, 6th (Rotorua, New Zealand, 16-Apr-2018–19-Apr-2018)
University of Canterbury
2018
url
http://www.foresteng.canterbury.ac.nz/documents/FEC2018%20Papers/Pdf/FEC2018_2A_Paper1_Spinelli_productivity_grapple%20yarding.pdfView
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Abstract

Forestry Sciences
The goal of this study was to produce a general benchmark for the productivity of innovative grapple yarding techniques in plantation forestry, based on a large number of observations, conducted over extended periods on multiple teams. Only that way, can one produce reliable benchmarks for this technique, which may integrate the inherent variability introduced by terrain, machine type, individual team proficiency and seasonal fluctuations. In particular, the study aims at 1) determining reference values for net productivity and utilization, 2) categorizing downtime, 3) discriminating between equipment options and 4) modeling net productivity as a function of relevant independent variable. Such knowledge will allow accurate operation planning, which is crucial to precision management.

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