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The first forest thinning operation at a five-year-old algarrobo blanco ( Prosopis alba ) commercial plantation in Herrera (Department of Avellaneda) in the province of Santiago del Estero, Argentina was analyzed using a time and movement study to determine operational productivity and costs associated with the shoring process using a chainsaw. Effective and operative times were measured and the volume was calculated with respect to bark, efficiency, productivity and the direct cost of thinning. The sample of 226 trees had a cut volume of 1.19 m 3 . The average operative time was 77 s/tree and the median effective time was 49 s/tree. A strong correlation was found between the effective working time with the tool and the variables for greater diameter and volume of the trees. The operational efficiency was 63.3%. Productivity per hour when felling trees was 0.25 m 3 /h (47 trees/h). The daily cost of the operation was 781 $/day, and the unit thinning cost was 527 $/m3 (1 US$ = 8.12 $ in May of 2014).

ingeniería solidaria/revista ingeniería solidaria

Estimación del costo del primer raleo de algarrobo blanco (Prosopis alba): metodología aplicada al caso de una plantación en Herrera, Santiago del Estero, Argentina