Labor productivity and costs of motor-manual release of spruce from hardwoods in Manitoba
1990
DeFranceschi, J. P. | Bell, F. W.
"Labor productivity and costs for brush saw and chain saw release of white spruce (Picea glauca (Moench) Voss) from a trembling aspen (Populus tremuloides Michx.) overstory are described for operations in 25- and 55-year-old spruceaspen stands in Manitoba. Labor production in the 25-year-old stand averaged 26.6 hours per hectare with chain saws and 28 hours per hectare with brush saws. Productivity in the 55-year-old stand averaged 34.4 hours per hectare with chain saws. The study also examined the effect of stand characteristics on labor production. Simple equations for estimating labor productivity from stand statistics are presented. These equations show that for given stand characteristics, chain saws outperform brush saws and that the difference between the two saw types increases with stand density. Treatment costs for the operations are estimated using the average labor production observed and the equations to predict labor productivity from stand characteristics."
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