This work aimed the evaluation of soybean mechanical harvesting in Minas Gerais State, during 2002/2003 soybean crop, comparing grain losses according to harvester age, harvesting ground speed, track system (axial and radial) and property condition (proper or rented). Ground speed and tracking cylinder rotation were also studied except when they were evaluated as variable function. The results indicate that the harvesters up to five years old, independent of their rate of annual use, had lesser losses than the harvesters with more than six years. The proper harvesters had presented minors losses when comparing with rented and the machines with axial track system presented minors losses than those with radial track system.
track system; harvesters; ground speed