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One of the bottlenecks for expanding commercial bamboo farming in Brazil is agricultural mechanization. The aim of this work was to evaluate the operational performance and to estimate the mechanized cost of soil preparation and planting of giant bamboo in four cultivation systems. The case study of mechanized systems for giant bamboo cultivation was carried out in: area of degraded pasture with conventional soil preparation (PC1); area of eucalyptus regrowth with conventional soil preparation (PC2); area of degraded pasture and no-tillage (PD1) and area of eucalyptus regrowth and no-tillage (PD2). Evaluations of operational field capacity (Cco) were performed to determine the amount of work performed per machine per hour, and total cost (COT) to economically estimate hourly and per hectare costs of operations. The methodology used was proposed by Mialhe (1974) and ASABE (2006). Except for PC2, the planting operation represents a larger share of total costs; direct planting in PD1 and PD2 allows fewer activities in the soil tillage operation and consequent cost reduction. PD1 is recommended.

OPERATIONAL COSTS OF GIANT BAMBOO CULTIVATION IN DIFFERENT SOIL PREPARATION SYSTEMS