. Bark beetle risk in mature ponderosa pine forests in western Montana. Bark beetles Montana; Ponderosa pine Diseases and pests Montana. Old-growth stand of ponderosa pine on the MoCrea Park risk rating plot near Albert on^ Montana. The oroums of the overmature trees in this relatively dense stand exhibit varying decline in vigor symptomatia of increasing susceptibility of some trees to lethal attacks of the western pine Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illust
. Bark beetle risk in mature ponderosa pine forests in western Montana. Bark beetles Montana; Ponderosa pine Diseases and pests Montana. Old-growth stand of ponderosa pine on the MoCrea Park risk rating plot near Albert on^ Montana. The oroums of the overmature trees in this relatively dense stand exhibit varying decline in vigor symptomatia of increasing susceptibility of some trees to lethal attacks of the western pine Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Johnson, Philip C. (Philip Cornwell), 1907-; Intermountain Forest and Range Experiment Station (Ogden, Utah) 1n. Ogden, Utah : Intermountain Forest & Range Experiment Station, Forest Service, U. S. Dept. of Agriculture
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Keywords: ., bookcentury1900, bookcollectionameri, bookcollectionbiodiversity
