Operational performance of a motor cultivator on the experimental farm of the Higher Polytechnic Institute of Cuanza Sul (Original)
Keywords:
microtractor; rotary hoe; indices; turning; productivity.Abstract
Carrying out field tests allows information to be generated, providing knowledge of parameters that make it possible to carry out optimum management of the machinery fleet. The aim of this study was to evaluate the operational performance of a rotary hoe tiller in the experimental field of the Higher Polytechnic Institute of Cuanza Sul. To this end, the instructions and methodologies set out in the standards for carrying out technological and operational evaluations were used. The average width and length of the field was 31 by 63,5 m respectively. The results showed that the utilization coefficients for time, speed and working width were low, with values of 0,75; 0,80 and 0,87 respectively. However, the actual work productivity (0,18 ha h-1) and field efficiency (0,90) are acceptable. Finally, it can be concluded that the quality of the work carried out by the rotary hoe cultivator can be considered acceptable, although the utilization coefficients for width, speed and working time behaved slightly below the lines established in the specialized literature, which was conditioned by the quality of the harrowing process and lack of maintenance.
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