Desempenho operacional e análise de custos da implantação florestal mecanizada de eucalipto

• Autor(a) principal: Campos, Alexandre Arantes de
• Data de Publicação: 2013
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Repositório Institucional da Universidade Federal do Espírito Santo (riUfes)
• Texto Completo: http://repositorio.ufes.br/handle/10/5784
• topic: Forestry operations; Mechanization; Operating cost; Operações florestais; Mecanização; Custo operacional; Recursos Florestais e Engenharia Florestal; Florestas - Custo operacional; Eucalipto; Mecanização agrícola; 630

This research aimed at analyzing the operational performance and machine cost of eucaliptus mechanized planting. The data were collected on Northern of Espírito Santo State and Southern of Bahía State. The operational analysis was based on time and motion studies, aiming to determine the distribution of operating time, machine availability, use rates, operating efficiency, machine productivity. The cost analysis was based on cost of planting tree operational activities. The following activities were evaluated: clearing of stand waste, subsoiling, marking the plating pit with fertilization, planting, chemical weeding, covering fertilization. According to the results, the highest productivity time (57,08%) was observed in São Mateus region where there was no difference among the activities. The highest mean accessory time (17,24%) was observed in Posto da Mata region, additionally, the lowest percentage values for subsoiling (11,56%) and marking the plating pit with fertilization (12,90%). Planting activity demanded highest auxiliary time for both regions, Posto da Mata (21,42%) and São Mateus (13,08%). São Mateus region showed the lowest mean unproductive time (10,59%), where the highest was found in subsoiling (23,93%) and lowest in planting (3,14%). Comparing the results among the different activities between the regions, subsoiling had the highest service time (15,65%) in Posto da Mata and clearing stand waste (18,19%) highest in São Mateus. The other activities did not differ from each other. Considering the mechanical availability, there was no difference among activities inside the regions, although subsoiling (96,17%) had the highest percent in São Mateus and clearing stand waste (95,87%) in Posto da Mata. The highest use rate (71,92%) and operational efficiency (64,17%) were found in São Mateus whereas, there was no difference among activities. The highest productivity was observed for fertilization in both regions, where 2,52ha.h-1 was found in Posto da Mata and 2,99ha.h-1 in São Mateus. The highest operating cost was due to subsoiling (R$112,80/ha) whereas, fertilization showed the lowest operating cost (R$12,22/ha). The best indicators were observed in São Mateus region (highest productive time, better machines and equipments efficient use and lowest cost)