Abstract
Abstract The need for herbicide control of hardwood understories is widely recognized for successful regeneration of white pine, because of the slow height growth of pine seedlings; however, it is often not carried out in the low-investment silviculture frequently practiced in New England. This study examined the ability of suppressed white pine saplings to respond to release following a shelterwood establishment cut where no hardwood control was done. Measurements of regeneration were made 11 yr after cutting in a mature pine-oak stand on a till soil in central Massachusetts. Pine seedlings established after the cut were surpassed in height by hardwood seedling and sprout growth. Older suppressed pine saplings which predated the establishment cut (10 to 38 yr old at the time of the cut, with mean heights of 0.4 to 2.0 m) quickly responded to release and grew to mean heights of 3.8 to 5.1 m 11 yr after cutting; these were within 1.5 m of the height of the tallest hardwoods. Retention of older pine saplings during shelterwood establishment cutting may provide a way of maintaining a white pine component in newly regenerated stands, particularly where herbicide control of hardwood competition is not planned. North. J. Appl. For. 11(1):166-169.
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