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Title: Lodgepole Pine Dwarf Mistletoe
Author: Hawksworth, Frank G.; Dooling, Oscar J.;
Source: Forest Insect & Disease Leaflet 18. [Broomall, PA:] U.S. Dept. of Agriculture, Forest Service, Northern Area State & Private Forestry
Publication Series: Forest Insect and Disease Leaflet (FIDL)
Description: Lodgepole pine dwarf mistletoe (Arceuthobium americanum Nutt. ex Engelm.) is a native, parasitic, seed plant that occurs essentially throughout the range of lodgepole pine in North America. It is the most damaging disease agent in lodgepole pine, causing severe growth loss and increased tree mortality. Surveys in the Rocky Mountains show that the parasite is found in one- to two-thirds of commercial lodgepole pine stands. Recent assessments of the effects of lodgepole pine dwarf mistletoe in Montana, Colorado, and Wyoming indicate that the annual loss exceeds 40 million cubic feet (1.1 million m3) per year. Acceptable yields cannot be expected from stands infested when they are young. For example, 100-year-old stands that have been infested for 70 years averaged only 300 cubic feet (8 in') of wood per acre, while healthy stands of the same age on similar sites averaged 2,350 cubic feet (65 in') of wood per acre.
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Hawksworth, Frank G.; Dooling, Oscar J. 1984. Lodgepole Pine Dwarf Mistletoe. Forest Insect & Disease Leaflet 18. [Broomall, PA:] U.S. Dept. of Agriculture, Forest Service, Northern Area State & Private Forestry
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