Productivity, measured in terms of tonnage of grapes picked in a given amount of time, can be increased by use of equipment that will transport the picker, improve picking visibility, and move the fruit into containers. These tests with a mobile platform for transporting grape harvest workers along the row indicated that the degree of improved efficiency possible depends largely on the quality of the labor and crew size.

Robert E. Goodwin, Manteca; the Oneto-Gotelli Company, Stockton; and George R. Giannini, Department of Agricultural Engineering, U. C. Davis, also assisted with these experiments.