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Originally Posted by Sean Freeman  Eric's right its a trail behind compressor with big hoses, noisey and yes messy with the dirt thrown out. As I tried to suggest there is little scientific evedence to demonstrate decompaction does very much at all...in fact the few studies that have been published in peer reviewed journals show no difference from the control in the measurements taken. |
Sean, there are also studies with positive results (see the Tienanmen Square work), but as you say it is site and tree dependent; many variables. Yes the air tool does mess up small roots--the size that the tree can regrow quickly. Drills go through roots big and small, and glaze the sides of the holes, greatly reducing permeability in some soils.