Zobrazeno 1 - 10
of 202
pro vyhledávání: '"R. D. Whitney"'
Autor:
R. A. Fleming, R. D. Whitney
Publikováno v:
Forest Pathology. 35:75-84
Summary The relationship between the occurrence of sporophores of the root rot pathogen Inonotus tomentosus (Basidiomycota, Hymenochaetaceae) and disease symptoms was studied in a white spruce plantation (Picea glauca) in Canada over a period of 14 y
Publikováno v:
Canadian Journal of Forest Research. 32:283-294
Root and butt rots are often implicated as causal factors influencing windfall and mortality of residual trees following partial cutting. Measurements of decay at stump level (i.e., the upward extension of root rot) were made on cross-sectional discs
Autor:
R. D. Whitney
Publikováno v:
Canadian Journal of Forest Research. 27:1217-1221
A study was conducted to relate aboveground decay and stain to that occurring in the roots and lower stump of 501 white spruce (Picea glauca (Moench) Voss), 1343 black spruce (Picea mariana (Mill.) BSP), and 1383 balsam fir (Abies balsamea (L.) Mill.
Autor:
R. D. Whitney
Publikováno v:
Canadian Journal of Forest Research. 25:1209-1230
Fungi associated with root rot in living trees were isolated and identified from 521 white spruce (Piceaglauca (Moench) Voss), 1342 black spruce (Piceamariana (Mill.) B.S.P.), and 1383 balsam fir (Abiesbalsamea (L.) Mill.) ranging in age from 26 to 2
Autor:
R. D. Whitney
Publikováno v:
The Forestry Chronicle. 69:445-449
Mortality caused by Inonotus tomentosus (Fr.) Teng (Tomentosus root rot) to dominant and codominant trees was found in all but one of 17 white spruce (Picea glauca [Moench] Voss) plantations 43–58 years old. Even though mortality usually commences
Autor:
R. D. Whitney, Mark H.R. Browning
Publikováno v:
Canadian Journal of Forest Research. 22:1974-1982
Seedlings of black spruce (Piceamariana (Mill.) B.S.P.) and jack pine (Pinusbanksiana Lamb.) were inoculated with fragmented hyphae of one of five species of ectomycorrhizal fungi and outplanted on reforestation sites after 14 weeks of growth in the
Autor:
R. D. Whitney, Mark H.R. Browning
Publikováno v:
Canadian Journal of Forest Research. 22:1263-1270
The growth response of jack pine (Pinusbanksiana Lamb.) and black spruce (Piceamariana (Mill.) B.S.P.) seedlings was tested in growth chambers at two levels of P, with or without inoculation of the mycorrhizal fungus Laccariabicolor (Maire) Orton and
Autor:
Mark H.R. Browning, R. D. Whitney
Publikováno v:
Canadian Journal of Forest Research. 21:701-706
Seedlings of jack pine (Pinusbanksiana Lamb.) and black spruce (Piceamariana (Mill.) B.S.P.) were inoculated with liquid cultures of fragmented hyphae of 10 species of ectomycorrhizal fungi and grown in either aseptic culture tubes for 20 weeks or no
Autor:
R. D. Whitney, D. W. Ip
Publikováno v:
Forest Pathology. 21:36-48
Simulated acid rain (SAR) of pH 2.6, 3.6 and 5.6 (control) was applied to Abies balsamea (L.) Mill. saplings at 2-week intervals for 3 years. Ambient precipitation was excluded from the trees during this period. Light to dark brown necrotic spots alo
Autor:
R. D. Whitney
Publikováno v:
The Forestry Chronicle. 67:23-26
Ten years after a logging operation, eight kinds of logging wounds (four made by skidders and four made by falling trees) persisted on residual eastern white pine, 55-80 years old at the time of logging. Forty percent of wounds had advanced decay and