Technical and cost evaluation of manual and semi-mechanized pruning in plantations of Pinus taeda
DOI:
https://doi.org/10.5380/rf.v42i4.26952Keywords:
Produtividade, custo, desrama e silvicultura.Abstract
Abstract
The objective of this research was to conduct technical and cost analysis of pruning in Pinus taeda L. planted forests by semi-mechanized and manual methods to increase productivity, improve the quality and reduction of costs. The research was conducted in a forest service company, located in the State of Parana, Brazil. There was studied the pruning to 2.5 m, 4.0 m and 5.0 m high. The technical evaluation consisted of a time and motion study, determining the productivity, operational efficiency and the quality of activities verifying the presence of branch stumps and injuries in the wood. The cost analysis was done by determining operating and production costs. The results showed that manual pruning had lower productivity compared to the semi-mechanized method, provided even better quality of work over terms apparent injuries on wood. Though even higher production cost, the implementation of pruning higher by semi-mechanized methods becomes more technical and economically, caused by better quality work in relation to the branch stumps and possible ergonomics benefits to workers.
Keywords: Productivity; cost; pruning and silviculture.Downloads
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