The decline of sugar maples (Acer saccharum)

From: Plant Physiology | Date: October 1, 2003| Author: | Copyright information

Sugar maples across the northeastern US and eastern Canada are in decline. The problem is not new, but the incidence and severity of maple decline have increased markedly in recent decades to include urban, sugar-bush, and forest environments (Horsley et al, 2002). Symptoms include reduced foliage and reduced twig growth, and the eventual dieback of branches in the upper canopy. The first noticeable symptom is usually premature yellowing or reddening of the foliage. The exact causes of sugar maple decline are hard to pinpoint. The current consensus is that maple decline is a progressive ...

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