Infection of lodgepole pine and white spruce by Alberta isolates of Armillaria

1989 ◽  
Vol 19 (6) ◽  
pp. 685-689 ◽  
Author(s):  
Martin S. Mugala ◽  
Peter V. Blenis ◽  
Yasuyuki Hiratsuka ◽  
Kenneth I. Mallett
Keyword(s):  
North American ◽  
Root Rot ◽  
Lodgepole Pine ◽  
White Spruce ◽  
Biological Species ◽  
Containerized Seedlings ◽  
Pine Seedlings ◽  
Armillaria Root Rot

Two experiments were conducted to test the hypothesis that white spruce (Piceaglauca (Moench) Voss) is less liable than lodgepole pine (Pinuscontorta Dougl. var. latifolia Engelm.) to be attacked by Alberta isolates of Armillaria. In the first experiment, 27 two-year-old containerized pine and spruce were inoculated with each of 19 different isolates representing North American biological species (NABS) I and V, the Foothills variant of NABS I, and A. mellea s.str. In the second experiment, 10 containerized seedlings of both species were inoculated with eight different isolates of NABS I and transferred to 2-L pots 2 months later. Inoculum survived better in association with spruce seedlings than with pine. In both experiments, spruce seedlings were more frequently infected than pine seedlings, and more likely to die when infected, although this difference was significant only in the first experiment. Favoring or planting spruce on sites with Armillaria root rot, therefore, cannot be recommended in Alberta.

Soil affects Armillaria root rot of lodgepole pine

1989 ◽  
Vol 19 (12) ◽  
pp. 1638-1641 ◽  
Author(s):  
Peter V. Blenis ◽  
Martin S. Mugala ◽  
Yasuyuki Hiratsuka
Keyword(s):  
Soil Type ◽  
Root Rot ◽  
Lodgepole Pine ◽  
Linear Analysis ◽  
Biological Species ◽  
Armillaria Root Rot ◽  
Production Frequency ◽  
Log Linear ◽  
Seedling Infection ◽  
Different Soils

A total of 768 two-year-old lodgepole pine (Pinuscontorta var. latifolia Engelm.) seedlings were transplanted into four different soils, having different capabilities for supporting lodgepole pine growth. Thirty days later, they were inoculated with either of two isolates of North American Biological Species I (Armillariaostoyae (Romag.) Herink) of Armillaria. Log–linear analysis indicated that soil type had a significant effect on inoculum viability, rhizomorph production, frequency of seedling infection, and the likelihood of tree death following infection.

DECAY IN WHITE SPRUCE AT THE KANANASKIS FOREST EXPERIMENT STATION

1953 ◽  
Vol 29 (3) ◽  
pp. 233-247 ◽  
Author(s):  
W. B. G. Denyer ◽  
C. G. Riley
Keyword(s):  
Root Rot ◽  
Lodgepole Pine ◽  
White Spruce ◽  
Douglas Fir ◽  
Sample Plot ◽  
Experiment Station ◽  
Forest Experiment Station

1. One hundred and four white spruce were analyzed for decay at the Kananaskis Forest Experiment Station. Lodgepole pine, Douglas fir, and alpine fir occurring on the sample plot with the spruce were also analyzed.2. On a board foot basis, cull in white spruce averaged 12.5 per cent. Percentages of cull in other species were: lodgepole pine 41.7, Douglas fir 28.3, and alpine fir 0.4.3. Gross and net volume tables for white spruce in board feet and total cubic feet are presented.4. POLYPORUS CIRCINATUS var. DUALIS Peck and FLAMMULA CONNISSANS Fr. were the most important causes of root rot and were responsible for 30 per cent of the total decay volume.5. FOMES PINI (Thore) Lloyd and STEREUM SANGUINOLENTUM Alb. & Schw. ex Fr. were the most important causes of trunk rot and were responsible for more than 50 per cent of the total decay volume.

Effect of light, nitrogen fertilization, and mycorrhizal fungi on growth and photosynthesis of lodgepole pine seedlings

1983 ◽  
Vol 13 (6) ◽  
pp. 1099-1106 ◽  
Author(s):  
S. A. Ekwebelam ◽  
C. P. P. Reid
Keyword(s):  
Ammonium Nitrate ◽  
Nitrogen Fertilization ◽  
Mycorrhizal Fungi ◽  
Lodgepole Pine ◽  
Photosynthetic Rates ◽  
Containerized Seedlings ◽  
Pine Seedlings ◽  
Mycorrhiza Formation ◽  
Nitrogen Treatments ◽  
Effect Of Light

Seedlings of lodgepole pine (Pinuscontorta Dougl.) were grown for 10 weeks without eetomycorrhizae in the greenhouse at three levels of irradiance (low, medium, and high) and ammonium nitrate (3, 62, and 248 ppm N). At 10 weeks, inoculation with either Pisolithustinctorius (Pers.) Coker and Couch or Suillusgranulatus (L. ex Fr.) O. Kuntze was superimposed on light and nitrogen treatments, and the seedlings were grown for an additional 6 weeks. Mycorrhiza formation increased with increase in irradiance, while fertilization with 62 ppm N resulted in greater mycorrhiza formation than either 3 or 248 ppm N. Further, inoculated plants had significantly greater biomass and took up more phosphorus than nonmycorrhizal seedlings. Inoculation with P. tinctorius and S. granulatus resulted in photosynthetic rates of 1.87 and 1.85 mg CO2•dm−2•h−1, respectively, significantly greater than nonmycorrhizal plants (1.41 mg CO2•dm−2•h−1). Although the increase in growth of the mycorrhizal seedlings was associated with increased photosynthesis, the magnitude of this response depended on specific combinations of irradiance and nitrogen fertilization. These results emphasize the importance of interactions among irradiance, nitrogen fertilization, and mycorrhiza development in the growth of containerized seedlings.

scholarly journals Lodgepole Pine and White Spruce Establishment After Glyphosate and Fertilizer Treatments of Grassy Cutover Forest Land.

1979 ◽  
Vol 55 (3) ◽  
pp. 102-105 ◽  
Author(s):  
D. G. Blackmore ◽  
Wm. G. Corns
Keyword(s):  
Picea Glauca ◽  
Pinus Contorta ◽  
Lodgepole Pine ◽  
White Spruce ◽  
Forest Land ◽  
Vegetation Control ◽  
Calamagrostis Canadensis ◽  
Pine Seedlings ◽  
One Year ◽  
Spring Planting

Perennial herbaceous vegetation, mainly marsh reed grass, (Calamagrostis canadensis (Michx) Beauv.), was sprayed with glyphosate on the day before planting one-year-old plugs of lodgepole pine (Pinus contorta Dougl. var. latifolia Engelm.) and white spruce (Picea glauca (Moench) Voss) on cutover forest land north of Edson, Alberta. Spraying at 4.5 kg ai/ha, included spot and strip applications in June 1976, compared with unsprayed scalps and controls. At the same time, all treatments were repeated plus a 9 g, 22-8-2 fertilizer tablet for each seedling. Another experiment at the same site, begun on August 1, 1976, compared scalp, unfertilized control and glyphosate strip treatments, followed by planting of pine seedlings the day after spraying 4.5 kg ai/ha glyphosate. An adjacent experiment, also commenced on August 1, included dosages of 1.1 to 5.6 kg ai/ha with planting of pine seedlings in 4.5 kg/ha and in control plots in May 1977. August application of 2.2 kg/ha provided excellent initial vegetation control, as effective as the larger amounts applied at that time, and was superior during the first 12 months to 4.5 kg/ha applied in June. Twenty-six months after the spring planting new shoot growth of fertilized pine in the glyphosate strips was statistically significantly greater than that for all other treatments and growth in fertilized scalps was also very good. At the same time leader growth of spruce in fertilized scalps was significantly greater than that for other treatments but growth in glyphosate strips did not exceed that of unfertilized controls. Contrary to results of spring planting, there was marked injury and mortality of pine planted in August in glyphosate plots which had been sprayed on the preceding day. Seedlings planted in glyphosate-treated strips nine months after the August spraying exceeded the growth of control plants but not until the year after they were planted.

scholarly journals MORTALITY CAUSED BY ARMILLARIA ROOT ROT, PERIDERMIUM RUSTS AND OTHER DESTRUCTIVE AGENTS IN LODGEPOLE PINE REGENERATION

1964 ◽  
Vol 40 (3) ◽  
pp. 350-361 ◽  
Author(s):  
J. A. Baranyay ◽  
G. R. Stevenson
Keyword(s):  
Mortality Rate ◽  
High Mortality ◽  
Root Rot ◽  
Lodgepole Pine ◽  
Armillaria Mellea ◽  
Large Numbers ◽  
Armillaria Root Rot ◽  
Pine Regeneration

Surveys of diseases and other forms of damage in naturally regenerated lodgepole pine were carried out in 1959 and 1962 near Robb, Alberta in an area that had been burned in May, 1941. Eighteen and one-half per cent of the trees on seven 0.05-acre plots were dead in 1959. The additional mortality on the same plots from 1959 to 1962 was 27.7 per cent. The seemingly high mortality was not considered excessive, in light of the large numbers of trees remaining on the plots, but further examinations will show if the present high mortality rate is sustained. The most important destructive agent up to 1962 was Armillaria mellea (Vahl ex Fr.) Quél. The most important non-infectious destructive agents were game and rodents.

Effect and Characteristics of Pathogens on Foliage and Buds of Cold-Stored White Spruce and Lodgepole Pine Seedlings

1971 ◽  
Vol 1 (4) ◽  
pp. 208-215 ◽  
Author(s):  
D. Hocking
Keyword(s):  
Lodgepole Pine ◽  
White Spruce ◽  
Fungus Species ◽  
Pine Seedlings ◽  
Storage Methods

Molding of cold-stored, spring-lifted seedlings of Piceaglanca (Moench) Voss var. albertiana (S. Brown) Sarg. reached an index of 71.7 and of Pinuscontorta Dougl. var. latifolia Engelm. an index of 35.6 during 10 weeks of storage. Mortality and reduced growth after planting out were directly related to the degree of molding. Of 37 fungus species isolated from moldy seedlings, 10 were considered significant and were further studied. All 10 grew at 5 °C and eight of them grew at 0 °C. All 10 were able to infect moist foliage at 2 °C, but only Epicoccumpurpurascens Ehrenb. ex Schlecht. could infect dry foliage, and then only at 95% r.h. Storage at 0 °C reduced molding to less than one-half that at 25 °C. Suitable seedling storage methods are discussed.

Inoculation studies of lodgepole pine with Alberta isolates of the Armillariamellea complex

1988 ◽  
Vol 18 (3) ◽  
pp. 292-296 ◽  
Author(s):  
K. I. Mallett ◽  
Y. Hiratsuka
Keyword(s):  
North American ◽  
Lodgepole Pine ◽  
Biological Species

Two-year-old lodgepole pine (Pinuscontorta Dougl. var. latifolia Engelm.) seedlings were each inoculated with one of 12 isolates of the Armillariamellea complex. All isolates were pathogenic but differed in the amounts of infection and mortality that they caused. An isolate of A. mellea s.str. and four Alberta isolates of North American biological species V (NABS V) caused the most mortality; however. A. mellea s.str. killed seedlings more quickly than NABS V. Seven Alberta isolates of NABS I infected and killed relatively few seedlings compared with NABS V and A. mellea s.str.

Sign in / Sign up

Export Citation Format

Share Document