Testing Permanent Fasteners: For shaker attachment to reduce limb injury in fruit and nut tree harvesting

to reduce shaker-clamp injuries on fruit and nut trees as described in a companion article in this issue of California Agriculture, tests were made to check the feasibility of using permanently installed fasteners for shaker attachments. This has the advantage of transmitting the shaking force through the fastener to the structural wood rather than through the vulnerable bark and growing tissue