NZ Farm Forestry - Ringbarking as a method for thinning trees
https://www.nzffa.org.nz/members/nzffa-member-blogs/dean-satchells-blog/ringbarking-as-a-method-for-thinning-trees/
WebApr 13, 2018 · Ringbarking is very effective at killing young trees, especially conifers, and simple methods have been devised to achieve this. However, once roots start to graft, the ringbarked tree often doesn't die with less and less successful results as trees age. Ringbark thinning becomes haphazard and inconsistent. Chemical ringbarking.
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