impacts and potential bruising. The video recorder had a recording speed of 60 frames per second. A stop watch and the clocks in the sensor and the video recorder were synchronized with a laptop computer before each test. The stop watch was used to record the starting time of each harvesting session. The real time of any frame (when the sensor was at one particular location) was determined by adding the elapsed time to the starting time. Using this approach, impacts recorded by the sensor were related and identi-fied in the video footage. In the field, due to the constraint of testing in a commercial blueberry farm, the sensor was only mounted on the first and the last bush (1.5 m above ground) in the test row of the blueberry bushes. The two bushes were manually defoliated