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Japanese larch notes and list (working) with ID numbers:



Japanese larch, Larix kaempferi (Lamb.) Carr.


JL188 (JL001)

P92 (May 31)

Origin: Japan, central Honshu
Provenance: unknown
Exposure rating: 8

Number planted: 45
Number of survivors: 7
Percentage of survivors: ~16%


Height: 8.8 metres (September 3, 2008)
Height: none measured yet in 2009
Bole circumference: 73.0 cm (August 30, 2008)
Bole circumference: 78.0 cm (August 9, 2009)

Photo

JL188, August 16, 2009 - JL188 is the tree on the left (trunk hidden) of the two tallest trees.

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September 23, 2006: measured JL, near 2006 beaver dam:

- height approximately 26'6" 
- circumference BH approximately 19" (~48 cm).

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Japanese larch Dominating - Japanese larch dominating native regrowth 14 years after reforestation. The lower (smaller) trees are primarily native White birch, Pin cherry, and Balsam fir. The yellow figure in the lower left centre of the picture is an individual in a yellow rainjacket for scale.

Japanese larch autumn 2006 - note the broken (cracked) top caused by the wind pressure from a storm

Japanese larch spring 2007 - same tree as noted immediately above

Japanese larch 1, spring 2006

Japanese larch 2, spring 2006

Japanese larch 3, spring 2006

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Note 1: January 9, 2007: the broken tops of 3 Japanese Larch have been noted among a total of roughly 3 dozen Japanese larch that were planted in 1994. This is a high percentage of broken tops, keeping in mind that broken tops of any other species of tree (native or introduced) at the breeding site are almost unknown as a result of wind damage (pressure). A plantation of Japanese Larch in coastal Newfoundland might be expected to suffer considerable damage from wind storms. Even in areas of Newfoundland that are not prone to strong winds, a freak wind storm might cause considerable damage to a Japanese larch plantation.

Note 1a: October 3, 2007: further to Note 1 above, a 4th Japanese larch with a broken top has been noted.
Note 1b: November, 2007:  further to previous notes, a 5th Japanese larch had its top broken during a windstorm.
Note 1c: December 9, 2007: further to the previous notes, a 6th Japanese larch with a broken top was noticed.

Note 2: June 14, 2007: During September 2006, a number of Japanese larch that had lost most or all of their needles were noted. These Japanese larch have not produced needles as of June 14, 2007. The cause of the needle loss is unknown. No obvious disease or pest has been observed.

Misc Field Notes:

January 6, 2007: noticed another Japanese larch with a broken top (#3) in same stand as above (October 14). The broken top was noticed a day after a major wind storm. Photos taken January 8, 2007. Nylon band on tree.

October 14, 2006: noticed young Japanese larch with broken top (#2)  (presumably in wind storm), inner field near 29 oak. Photos taken October 16, 2006. This is the second young Japanese Larch with a broken top (the other near beaver dam [#1, probably broken in 2005]).

Late October, 2006: nylon bands on 5 Japanese larch: these trees lost all of their needles in the summer of 2006.

 






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