Results 21 to 30 of about 1,409 (170)

Commodity risk assessment of Tilia cordata and Tilia platyphyllos plants from the UK. [PDF]

EFSA J
Abstract The European Commission requested the EFSA Panel on Plant Health to prepare and deliver risk assessments for commodities listed in Commission Implementing Regulation (EU) 2018/2019 as ‘High risk plants, plant products and other objects’. This Scientific Opinion covers plant health risks posed by plants of Tilia cordata and T.
EFSA Panel on Plant Health (PLH), Bragard C, Baptista P, Chatzivassiliou E, Di Serio F, Jaques Miret JA, Justesen AF, MacLeod A, Magnusson CS, Milonas P, Navas-Cortes JA, Parnell S, Potting R, Reignault PL, Stefani E, Thulke HH, Van der Werf W, Vicent Civera A, Yuen J, Zappalà L, Battisti A, Mas H, Rigling D, Faccoli M, Mikulová A, Mosbach-Schulz O, Stergulc F, Streissl F, Gonthier P.   +28 more
europepmc   +2 more sources

Reproductive Compatibility Within and Among Spruce Budworm (Lepidoptera: Tortricidae) Populations [PDF]

, 2017
Spruce bud worm moths collected as larvae from two species of host trees in four populations were mated in single pairs in two years. In 1980 but not 1981, more of the intra-population matings than the inter-population matings were fertile.
Bauer, Leah S, Lorimer, Nancy
core   +3 more sources

Propagation of Abies fraseri by Semidormant Hardwood Stem Cuttings

HortScience, 1985
Abstract Dormant hardwood stem cuttings of Fraser Fir [Abies fraseri (Pursh) Poir.] were severed from upper and lower tree crowns and artificially chilled at 4°C for 0, 4, or 8 weeks to achieve a partial break in rest. Following chilling, the resulting semi-dormant cuttings were treated with 0, 1500, 3000, or 4500 ppm IBA, and rooted for 135 days using
Farrell C. Wise, Frank A. Blazich, L. Eric Hinesley   +2 more
openaire   +1 more source

First findings of an invasive tandem bark beetle – phytopathogenic fungus in the Middle Ural megalopolis [PDF]

Сибирский лесной журнал
The four-eyed fir bark beetle (Polygraphus proximus Blandford) and the fungus (Grosmannia aoshimae (Ohtaka, Masuya & Yamaoka) Masuya & Yamaoka) form an extremely aggressive invasive tandem affecting Siberian fir (Abies sibirica Ledeb.) throughout almost ...
Yu. N. Baranchikov, V. I. Ponomarev, N. V. Pashenova, A. A. Efremenko, D. Yu. Golikov, G. I. Klobukov, B. V. Krasutskiy, N. I. Kirichenko   +7 more
doaj   +1 more source

Isolation and characterization of microsatellite markers in Fraser fir (Abies fraseri) [PDF]

Molecular Ecology Notes, 2005
AbstractWe describe the isolation and characterization of 14 microsatellite loci from Fraser fir (Abies fraseri). These markers originated from cloned inserts enriched for DNA sequences containing tandem di‐ and tri‐nucleotide repeats. In total, 36 clones were selected, sequenced and evaluated.
Josserand, S.A., Potter, K.M., Johnson, G., Bowen, J.A., Frampton, J., Nelson, C.D.   +5 more
openaire   +1 more source

Refugial forests of the southern Appalachians: photosynthesis and survival in current-year Abies fraseri seedlings [PDF]

Tree Physiology, 2005
Fraser fir (Abies fraseri (Pursh) Poiret) is an endemic, high-elevation conifer confined to six relict mountaintop communities in the southern Appalachian Mountains, USA. High adult mortality has occurred over the past 50 years, possibly the result of an introduced insect (Adelges piceae Ratzeburg), air pollution, or both.
Daniel M, Johnson, William K, Smith
openaire   +2 more sources

Thyronectria balsamea on Abies fraseri in Pennsylvania and North Carolina

Plant Disease, 1997
In August 1996, several 4- to 6-m-tall Abies fraseri (Pursh) Poir. in Adams County, PA, were found bearing numerous dead branches and/or dead tops. The trees had been severely stressed by being ball-and-burlapped and replanted in 1993. Distinct cankers occurred between the living and dead portions of stems and branches.
N G, Wenner, W, Merrill, J T, Moody
openaire   +2 more sources

Grafting Fraser Fir (Abies fraseri): Effect of Scion Origin (Crown Position and Branch Order) [PDF]

HortScience, 2011
Success and subsequent growth of fraser fir [Abies fraseri (Pursh) Poir.] cleft grafts were studied in relation to origin and type of scion material in the tree crown. First- and second-order shoots (current-year) were collected from five zones in the crown, ranging from top to bottom, and grafted to 5-year-old fraser fir transplants in April.
Haley Hibbert-Frey, John Frampton, Frank A. Blazich, Doug Hundley, L. Eric Hinesley   +4 more
openaire   +1 more source

Is There Synchronicity in Nitrogen Input and Output Fluxes at the Noland Divide Watershed, a Small N-Saturated Forested Catchment in the Great Smoky Mountains National Park?

The Scientific World Journal, 2001
High-elevation red spruce [Picea rubens Sarg.]-Fraser fir [Abies fraseri (Pursh.) Poir] forests in the Southern Appalachians currently receive large nitrogen (N) inputs via atmospheric deposition (30 kg N ha 1 year 1) but have limited N retention ...
H. Van Miegroet, I.F. Creed, N.S. Nicholas, D.G. Tarboton, K.L. Webster, J. Shubzda, B. Robinson, J. Smoot, D. W. Johnson, S. E. Lindberg, G. Lovett, S. Nodvin, S. Moore   +12 more
doaj   +1 more source

Evaluation of Three Trap Types and Five Lures for Monitoring \u3ci\u3eHylurgus Ligniperda\u3c/i\u3e (Coleoptera: Scolytidae) and Other Local Scolytids in New York [PDF]

, 2018
Hylurgus ligniperda (Coleoptera: Scolytidae) is a pine (Pinus spp.) pest native to Eurasia and northern Africa. In December 2000, an established population of H. ligniperda was discovered in Monroe County, New York.
Haack, Robert A, Petrice, Toby R, Poland, Therese M   +2 more
core   +2 more sources