System for injecting treating agents into diseased trees comprises telescopic tubes operated by spindle system which push flexible tube into bore in tree, chemicals then being injected through cannula passing through tube

摘要

The system for injecting treating agents into diseased trees comprises telescopic tubes (1, 2) operated by a spindle system (3, 7). These push a flexible tube (4) into a bore in the tree to seal it. The chemicals are then injected through a cannula (5) passing through the tube.