. Biology of rust resistance in forest trees : proceedings of a NATO-IUFRO advanced study institute, August 17-24, 1969. Trees; Pine; Trees; Rust diseases. 184 HARUYOSHI SAHO The soil is derived from serpentine covered with a layer of volcanic ash over 10 cm deep. One thousand seedlings per hectare were planted, but only 815 survive. The planting density is considered to be quite low (4000/ha or 1620/acre is common), consequently the volume is very poor being only 19 m3 in volume. Average diameter is only cm and average height is only m. (5) Kobui, Hokkaido, where the initial test plan
. Biology of rust resistance in forest trees : proceedings of a NATO-IUFRO advanced study institute, August 17-24, 1969. Trees; Pine; Trees; Rust diseases. 184 HARUYOSHI SAHO The soil is derived from serpentine covered with a layer of volcanic ash over 10 cm deep. One thousand seedlings per hectare were planted, but only 815 survive. The planting density is considered to be quite low (4000/ha or 1620/acre is common), consequently the volume is very poor being only 19 m3 in volume. Average diameter is only cm and average height is only m. (5) Kobui, Hokkaido, where the initial test plantations was estab- lished in 1933. Early growth was good, so planting was continued until 1954. The total area now planted is 118 ha. Examples of the growth in these plantations is shown below, and in Figure 3 that shows the 1941 plantation. Average diameter at Planting date Average height (m) breast height (cm) 1939 1941 1942 Figure 3. Pinus pentaphylla planted in 1941 at Kobui in the southern part of Hokkaido. 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 Union of Forestry Research Organizations; United States. Forest Service; University of Idaho. Washington, D. C. : Forest Service
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Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
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Keywords: ., bookauthoruni, bookcentury1900, booksubjectpine, booksubjecttrees
