In 1997 and 1998 the commercially available conveyor weighing system Harvestmaster HM500 was evaluated on a trailed, single-row, offset-lifting, bunker hopper potato harvester on the experimental farm Scheyem. The system worked well and the reached accuracy, with a standard deviation of the relative errors of 4.1 %, was similar to that of yield measurement systems used in combines. Local yield data were corrected by the content of contaminats and yield maps were calculated. Regressionanalysis of the average relative grid yields of four years showed different yield patterns in comparison to combinable crops on the same two fields.     «

In 1997 and 1998 the commercially available conveyor weighing system Harvestmaster HM500 was evaluated on a trailed, single-row, offset-lifting, bunker hopper potato harvester on the experimental farm Scheyem. The system worked well and the reached accuracy, with a standard deviation of the relative errors of 4.1 %, was similar to that of yield measurement systems used in combines. Local yield data were corrected by the content of contaminats and yield maps were calculated. Regressionanalysis of...     »