. Biology of rust resistance in forest trees : proceedings of a NATO-IUFRO advanced study institute, August 17-24, 1969. Trees; Pine; Trees; Rust diseases. WHTTF PINES r T^P-W â ;-. ^4 Figure -. Pinus pumila growing near a windy ridgetop on Mt. Ochiai-dake in the central part of Hokkaido. PINUS KORAIENSIS SIEB. & ZUCC. The natural distribution of ?. koraiensis in Japan is limited to the mountains of central Honshu, with one ontlier in northern Shikoku. Its northern limit is in Fukushima Prefecture (3"7°N. latitude), and, aside from the Shikoku outlier, its southern limit is only abou
. Biology of rust resistance in forest trees : proceedings of a NATO-IUFRO advanced study institute, August 17-24, 1969. Trees; Pine; Trees; Rust diseases. WHTTF PINES r T^P-W â ;-. ^4 Figure -. Pinus pumila growing near a windy ridgetop on Mt. Ochiai-dake in the central part of Hokkaido. PINUS KORAIENSIS SIEB. & ZUCC. The natural distribution of ?. koraiensis in Japan is limited to the mountains of central Honshu, with one ontlier in northern Shikoku. Its northern limit is in Fukushima Prefecture (3"7°N. latitude), and, aside from the Shikoku outlier, its southern limit is only about 250 km away in Nagano Prefecture [35-l/2°N. latitude). The climate over the range of P. koratensis is cool. The average minimum temperature is about -11 to -13°C ( to °F) in the northern part and the maximum is 2"°C (°F) in southern part. At the highest part of the range (2600 m elevation), the average minimum temperature is about -20°C (-4°F) . Annual precipitation is about 1000 to 2000 mm. This is somewhat greater than that holding for the main distribution of the species in Korea, Manchuria, and China where the annual precipitation is about 600 to 1000 mm. Moderately moist soils are required for P. koraiensis, as foi P. strobus. Japanese ?. kovaiensis grows best under conditions of high relative humidity, and, under these conditions, the stems and branches often are covered by mosses and lichens. Soils within the Japanese range of P. koTcdensts are derived from horn-stones, sand-stones, andesites and clay-stones. The species grows mainly on the lower slopes and on the wetter and deeper soils. Occasionally, when found in high rocky mountain^ it occurs in a dwarf 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 North Atlantic Treaty Organization; International
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Keywords: ., bookauthoruni, bookcentury1900, booksubjectpine, booksubjecttrees
