This document discusses pruning of olive trees and presents results from a trial in Spain comparing different pruning schedules. The key findings are: 1) Trees that were not pruned at all produced the most olives but had the lowest oil content, while trees pruned every 4 years produced the highest oil yield per tree despite fewer olives. 2) Pruning increases the oil content and productivity per unit of canopy volume, even if it reduces total yield per tree. 3) Well-managed unpruned trees can remain healthy and productive for many years without issues, showing pruning is done for management purposes rather than plant needs.