scholarly journals STUDIES ON WHITE PINE BLISTER RUST IN NOVA SCOTIA

1953 ◽  
Vol 29 (3) ◽  
pp. 267-272 ◽  
Author(s):  
W. K. McGinn ◽  
A. G. Davidson
Keyword(s):  
Nova Scotia ◽  
Control Measure ◽  
Systematic Search ◽  
White Pine Blister Rust ◽  
White Pine ◽  
Clear Cutting ◽  
Blister Rust ◽  
Pine Regeneration ◽  
Show Evidence ◽  
Cutting Operation

Studies were undertaken in Nova Scotia to determine (i) the effect of different cutting practices on the establishment of a RIBES population and of white pine regeneration, (ii) whether blister rust is a major factor in retarding the establishment of white pine regeneration, and (iii) the feasibility and cost of RIBES eradication as a direct control measure against blister rust. No relationship was found to exist between RIBES establishment and the degree of cutting. Uncut softwood stands, where white pine is the predominant species, show evidence of producing a future pine crop. Forest types supporting white pine appear to offer the best opportunities for pine reproduction where a clear-cutting operation has given the stand maximum opening. Results of the present study to date do not show that blister rust is a major factor in retarding the establishment of white pine regeneration. To eradicate RIBES from the study area by a complete systematic search required 1 man-hour per acre. Because of the small number of RIBES plants found and of the tendency for them to occur consistently in moist, low-lying habitats, a complete systematic search for these plants appears to be unnecessary. It is suggested that one man, trained to recognize RIBES and their probable location, could cover large forest tracts with a minimum of time expended in searching localities unlikely to support these plants.

scholarly journals Limber Pine Regeneration and White Pine Blister Rust in the Central and Southern Rocky Mountains

2017 ◽  
Vol 63 (2) ◽  
pp. 151-164 ◽  
Author(s):  
Christy M. Cleaver ◽  
William R. Jacobi ◽  
Kelly S. Burns ◽  
Robert E. Means
Keyword(s):  
Rocky Mountains ◽  
White Pine Blister Rust ◽  
White Pine ◽  
Southern Rocky Mountains ◽  
Limber Pine ◽  
Blister Rust ◽  
Pine Regeneration

Application of slow-release tablets to enhance white pine regeneration: growth response and efficacy against white pine blister rust

2006 ◽  
Vol 36 (3) ◽  
pp. 684-698 ◽  
Author(s):  
Douglas G Pitt ◽  
Timothy Meyer ◽  
Mya Park ◽  
Linda MacDonald ◽  
Teresa Buscarini ◽  
...  
Keyword(s):  
Seedling Growth ◽  
Slow Release ◽  
Disease Incidence ◽  
Mortality Rates ◽  
White Pine Blister Rust ◽  
Infection Rates ◽  
White Pine ◽  
Term Survival ◽  
Blister Rust ◽  
Pine Regeneration

Three field studies were established in northeastern Ontario to test the ability of slow-release tablets to provide prophylactic protection against white pine blister rust (caused by Cronartium ribicola J.C. Fisch.) and thereby improve the long-term survival, health, and growth of eastern white pine (Pinus strobus L.) seedlings. Experimental treatments included factorial rate combinations the fungicide triadimefon (Bayleton®), the insecticide imidacloprid (Merit®), and fertilizer (N–P–K, 15:8.5:3.75). Mean foliar fungicide residues increased to maximal levels (0.21 to 3.1 µg/g fresh mass (fm)) within 1 to 2 years posttreatment and declined markedly to <0.3 µg/g fm 3 to 4 years posttreatment. Dose-dependent and temporal trends observed in foliar residue levels were reflected by parallel trends in efficacy. At ≥2000 ppm triadimefon, infection rates were reduced to between 35% and 70% and mortality rates were reduced to between 6% and 52% over seven growing seasons across the three sites. In contrast, untreated seedlings had infection rates between 60% and 98% and mortality rates between 30% and 90%. Neither fungicide nor insecticide treatments had significant effects on surviving seedling growth. Differences in fungicide uptake, disease incidence, and seedling growth in response to fertilization were observed among the three sites. Direct weed control, provided at one site, appeared to offer relatively greater health and growth benefits than fertilization.

Landscape analysis of risk factors for white pine blister rust in the Mixed Forest Province of Minnesota, U.S.A.

2002 ◽  
Vol 32 (9) ◽  
pp. 1639-1650 ◽  
Author(s):  
Mark A White ◽  
Terry N Brown ◽  
George E Host
Keyword(s):  
Spatial Data ◽  
Spatial Databases ◽  
Mixed Forest ◽  
Data Sets ◽  
White Pine Blister Rust ◽  
White Pine ◽  
Blister Rust ◽  
Pine Regeneration ◽  
Lake States ◽  
Spatial Data Sets

The abundance of eastern white pine (Pinus strobus L.) has been significantly reduced in northeastern Minnesota over the past 120 years. White pine blister rust (WPBR), a commonly lethal fungal disease of white pine, was introduced in Minnesota in approximately 1914 and now, along with other factors such as herbivore browsing, poses a major challenge to attempts to reestablish white pines in the region. A map delineating broad WPBR hazard zones for the Lake States region was prepared in 1964. We created a higher resolution map that estimates the spatial variability of WPBR hazard in the Laurentian Mixed Forest Province of Minnesota using modern geographic information system techniques and readily available spatial databases. The new map has significantly higher resolution than the old and demonstrates that even within areas previously classified as "high hazard", there are significant acreages of "low-hazard" areas where white pine regeneration may be possible. Our analyses are consistent with previous work in the Lake States region, showing that climate, topographic characteristics, and distance from water bodies and wetlands have a strong influence on WPBR infection hazard. We also present methods for analyzing forest conditions at regional scales using commonly available spatial data sets.

Pruning to manage white pine blister rust in the southern Rocky Mountains

2011 ◽  
Author(s):  
Amanda Crump ◽  
William R. Jacobi ◽  
Kelly S. Burns ◽  
Brian E. Howell
Keyword(s):  
Rocky Mountains ◽  
White Pine Blister Rust ◽  
White Pine ◽  
Southern Rocky Mountains ◽  
Blister Rust

Options for the management of white pine blister rust in the Rocky Mountain Region

2008 ◽  
Author(s):  
Kelly S. Burns ◽  
Anna W. Schoettle ◽  
William R. Jacobi ◽  
Mary F. Mahalovich
Keyword(s):  
Rocky Mountain ◽  
Mountain Region ◽  
White Pine Blister Rust ◽  
White Pine ◽  
Blister Rust ◽  
Rocky Mountain Region

Risk of white pine blister rust to limber pine in Colorado and Wyoming, USA

2013 ◽  
Vol 44 (1) ◽  
pp. 21-38 ◽  
Author(s):  
H. S. J. Kearns ◽  
W. R. Jacobi ◽  
R. M. Reich ◽  
R. L. Flynn ◽  
K. S. Burns ◽  
...  
Keyword(s):  
White Pine Blister Rust ◽  
White Pine ◽  
Limber Pine ◽  
Blister Rust

scholarly journals Compounding effects of white pine blister rust, mountain pine beetle, and fire threaten four white pine species

Ecosphere ◽  
2020 ◽  
Vol 11 (10) ◽  
Author(s):  
Joan C. Dudney ◽  
Jonathan C. B. Nesmith ◽  
Matthew C. Cahill ◽  
Jennifer E. Cribbs ◽  
Dan M. Duriscoe ◽  
...  
Keyword(s):  
Mountain Pine Beetle ◽  
White Pine Blister Rust ◽  
White Pine ◽  
Blister Rust ◽  
Mountain Pine ◽  
Pine Beetle ◽  
Pine Species

scholarly journals Whitebark pine mortality related to white pine blister rust, mountain pine beetle outbreak, and water availability

Ecosphere ◽  
2016 ◽  
Vol 7 (12) ◽  
Author(s):  
Erin Shanahan ◽  
Kathryn M. Irvine ◽  
David Thoma ◽  
Siri Wilmoth ◽  
Andrew Ray ◽  
...  
Keyword(s):  
Water Availability ◽  
Mountain Pine Beetle ◽  
Whitebark Pine ◽  
White Pine Blister Rust ◽  
White Pine ◽  
Blister Rust ◽  
Mountain Pine ◽  
Pine Beetle

scholarly journals Use of triadimefon to control white pine blister rust

1996 ◽  
Vol 72 (6) ◽  
pp. 637-638 ◽  
Author(s):  
Jean A. Bérubé
Keyword(s):  
Cronartium Ribicola ◽  
White Pine Blister Rust ◽  
White Pine ◽  
Growth Season ◽  
Effective Protection ◽  
Rust Infection ◽  
Blister Rust ◽  
Pine Seedlings ◽  
Second Growth ◽  
Bare Root

White pine seedlings were treated with triadimefon two weeks prior to natural inoculation with Cronartium ribicola and were observed for two growth seasons. During the second growth season in the greenhouse the incidence of blister rust symptoms was 70.8% for the untreated controls, whereas only 3.8% of the treated seedlings showed symptoms of blister rust. Triadimefon offers effective protection against white pine blister rust infection and would enable the production of bare root seedlings in areas prone to blister rust infection.

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