Leave That Stub (why the one third rule for pruning is complete nonsense) скачать в хорошем качестве

Leave That Stub (why the one third rule for pruning is complete nonsense)

You couldn't ask for a more clear example of a time when it's important to leave a stub while pruning storm damage, because that is what the trees intelligence is telling us and we have to follow that intelligence. In this case, leaving a short stub, allows the tree to put on some new growth from that stub, which has already started sprouting from latent buds 25 days after the storm damage. That new growth will both shade the trunk from the direct southwestern sun in the heat of the summer, and be a source of food as those leaves can photosynthesize. Keeping that short stub alive also allows puts the source of infection well outside the branch protection zone and allows the tree time to set up chemical barriers to infection. Guy Meilleur wrote an article specifically about pruning after storm damage that makes this exact point. He also gave a talk on the same subject at the ISA symposium in 2006. The concepts in that talk, which was specifically about pruning broken limbs, can be applied to all pruning, and are in line with the European research that suggests we should not be making live cuts over 4" on the main stem.