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    Author(s): Scott W. BaileyStephen B. HorsleyRobert P. LongRichard A. Hallett
    Date: 1999
    Source: In: Horsley, Stephen B.; Long, Robert P., eds. Sugar maple ecology and health: proceedings of an international symposium; 1998 June 2-4; Warren, PA. Gen. Tech. Rep. NE-261. Radnor, PA: U.S. Department of Agriculture, Forest Service, Northeastern Research Station: 63-65.
    Publication Series: Other
    Station: Northeastern Research Station
    PDF: View PDF  (238.06 KB)

    Description

    Decline of sugar maple (Acer saccharum Marsh.) has been a problem on the Allegheny Plateau of Pennsylvania since the mid-1980's (Kolb and McCormick 1993; Williams et al. 1996). Horsley et al. (this volume) found that declining stands were distinguished from non-declining stands by a combination of repeated insect defoliation and low foliar calcium and magnesium concentrations. Stands that exhibited only one of these two conditions remained healthy. Information is needed (1) to determine whether low foliar nutrient concentrations are related to soil quality, (2) to determine key parameters and threshold values that describe soil conditions which might predispose a stand to decline, and (3) to develop methods to predict the distribution of susceptible sites across the landscape. Furthermore, information about the role of acid deposition in inducing soil fertility problems remains elusive.

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    Citation

    Bailey, Scott W.; Horsley, Stephen B.; Long, Robert P.; Hallett, Richard A. 1999. Influence of geologic and pedologic factors on health of sugar maple on the Allegheny Plateau. In: Horsley, Stephen B.; Long, Robert P., eds. Sugar maple ecology and health: proceedings of an international symposium; 1998 June 2-4; Warren, PA. Gen. Tech. Rep. NE-261. Radnor, PA: U.S. Department of Agriculture, Forest Service, Northeastern Research Station: 63-65.

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