Dwarf mistletoe-pandora moth interaction and its contribution to ponderosa pine mortality in Arizona

Wagner, Michael R. and Mathiasen, Robert L. (1985) Dwarf mistletoe-pandora moth interaction and its contribution to ponderosa pine mortality in Arizona. Western North American Naturalist, 45 (3). pp. 423-426. ISSN 1944-8341

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Abstract

The interaction between Southwestern dwarf mistletoe, Arceuthobtum vaginalum subspecies cryptopodum, infestation and defoliation by the pandora moth, Coloradia pandora pandora , on the Kaibab Plateau in Arizona was evaluated. Heavy defoliation of ponderosa pine, Pinus ponderosa, in 1979 and 1981 resulted in mortality of individual trees in areas of heavy dwarf mistletoe infestation. Postmortem evaluation of ponderosa pines indicated that dead trees had a significantly higher dwarf mistletoe rating than did nearby paired live trees. Of 25 tree pairs evaluated, only two live trees had higher dwarf mistletoe ratings than the paired dead tree. Mean dwarf mistletoe ratings were:live trees 2.9, dead trees 4.6 (6 class dwarf mistletoe rating system). Implications for management of the pandora moth are discussed.

Item Type:	Article
Keywords:	Southwestern dwarf mistletoe, ponderosa pine mortality, pandora moth, defolitation, infestation
Subjects:	S Agriculture > SD Forestry
NAU Depositing Author Academic Status:	Faculty/Staff
Department/Unit:	College of Engineering, Forestry, and Natural Science > School of Forestry
Date Deposited:	07 Jun 2017 20:26
URI:	http://openknowledge.nau.edu/id/eprint/2924

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