Effect of Different Training Methods on Work Efficiency and Intensity for Japanese Persimmon ‘Taishuu’ Tree Joint Training System

Abstract

Our aim was to reduce labor in persimmon tree husbandry and establish a simple cultivation method for the workability of persimmon bud thinning, fruit thinning, harvesting, and pruning, which are the main tasks on cultivating persimmon trees. So, we compared the workability of V-shaped trellis training and flat trellis training in a joint training system with the customary practice of the open center natural form of persimmon cultivation. The working time per 10 ares was the shortest for the joint V-shaped trellis for all tasks. Furthermore, the rate of increase in heart rate or the proportion of AC3 or higher was higher based on the Ovako Working Posture Analyzing System, and the surface myoelectric potential during harvesting was also the lowest for the joint V-shaped trellis. These findings suggest that the joint V-shaped trellis for persimmon is a training method that reduces the burden loaded on workers.