Pruning grapevines during shemitah

Pruning grapevines is vital to their maintenance and to prevent damage for years to come. It is generally performed during the winter when grapevines are dormant. However, the Torah explicitly forbids pruning during shemitah: "And your vineyards you shall not prune." (Melechet zemirah, Vayikra 25:4).

 What can be done to prevent damage for years to come while observing shemitah?

Watch the clip about grapevines, pruning, and shemitah solutions.