Biology and Control of Hemlock Wooly Adelgid

Biology and Control of Hemlock Wooly Adelgid
Author: Mark S. McClure
Publsiher: Unknown
Total Pages: 9
Release: 1987
ISBN: 1928374650XXX
Category: Adelges
Language: EN, FR, DE, ES & NL

Biology and Control of Hemlock Wooly Adelgid Book Excerpt:

Hemlock

Hemlock
Author: Anthony D'Amato,Benjamin Baiser,Aaron M. Ellison,David Foster,David Orwig,Wyatt Oswald,Audrey Barker Plotkin,Jonathan Thompson
Publsiher: Yale University Press
Total Pages: 352
Release: 2014-04-29
ISBN: 0300186770
Category: Nature
Language: EN, FR, DE, ES & NL

Hemlock Book Excerpt:

The Eastern Hemlock, massive and majestic, has played a unique role in structuring northeastern forest environments, from Nova Scotia to Wisconsin and through the Appalachian Mountains to North Carolina, Tennessee, and Alabama. A “foundation species” influencing all the species in the ecosystem surrounding it, this iconic North American tree has long inspired poets and artists as well as naturalists and scientists. Five thousand years ago, the hemlock collapsed as a result of abrupt global climate change. Now this iconic tree faces extinction once again because of an invasive insect, the hemlock woolly adelgid. Drawing from a century of studies at Harvard University’s Harvard Forest, one of the most well-regarded long-term ecological research programs in North America, the authors explore what hemlock’s modern decline can tell us about the challenges facing nature and society in an era of habitat changes and fragmentation, as well as global change.

Old Hemlock

Old Hemlock
Author: Amelia Pope Sutherland
Publsiher: Unknown
Total Pages: 69
Release: 1934
ISBN: 1928374650XXX
Category: Pope, Elnathan
Language: EN, FR, DE, ES & NL

Old Hemlock Book Excerpt:

Hemlock

Hemlock
Author: Susan Wittig Albert
Publsiher: Greenleaf Book Group
Total Pages: 328
Release: 2021-09-07
ISBN: 1952558166
Category: Fiction
Language: EN, FR, DE, ES & NL

Hemlock Book Excerpt:

From Susan Wittig Albert, the New York Times bestselling author of A Plain Vanilla Murder, comes a tightly crafted novel that juxtaposes the disappearance of a rare, remarkably illustrated 18th-century herbal with the true and all-too-human story of its gifted creator, Elizabeth Blackwell. ​Herbalist China Bayles’ latest adventure takes her to the mountains of North Carolina, where her friend Dorothea Harper serves as the director and curator of the Hemlock House Library, a priceless collection of rare gardening books housed in a haunted mountainside mansion that once belonged to Sunny Carswell, a reclusive heiress. But the most valuable book—A Curious Herbal, created by Elizabeth Blackwell in the 1730s—is missing and Dorothea is under suspicion. China’s search for the thief takes on a new urgency when she discovers Miss Carswell’s bookseller, the victim of an attempted murder. Is his shooting connected with the theft? And there are other urgent questions: What is the Hemlock Guild? Who owns Socrates.com? Did Sunny Carswell really kill herself, or does her ghost have a different story to tell? And what is the real truth behind the many tantalizing mysteries of A Curious Herbal? Hemlock is a compelling mix of mystery and herb lore, past secrets and present sins, and characters who are as real as your friends and neighbors—in an absorbing novel that only Susan Wittig Albert could create.

Western Hemlock

Western Hemlock
Author: James M. Cahill
Publsiher: Unknown
Total Pages: 8
Release: 1984
ISBN: 1928374650XXX
Category: Trees
Language: EN, FR, DE, ES & NL

Western Hemlock Book Excerpt:

Hemlock Dam Fish Passage Evaluation and Restoration

Hemlock Dam Fish Passage Evaluation and Restoration
Author: Michael Ernest Barber
Publsiher: Unknown
Total Pages: 135
Release: 1999
ISBN: 1928374650XXX
Category: Aquatic habitats
Language: EN, FR, DE, ES & NL

Hemlock Dam Fish Passage Evaluation and Restoration Book Excerpt:

Eastern Hemlock

Eastern Hemlock
Author: Robert L. Brisbin
Publsiher: Unknown
Total Pages: 8
Release: 1970
ISBN: 1928374650XXX
Category: Eastern hemlock
Language: EN, FR, DE, ES & NL

Eastern Hemlock Book Excerpt:

The Western Hemlock

The Western Hemlock
Author: Edward Tyson Allen
Publsiher: Unknown
Total Pages: 55
Release: 1902
ISBN: 1928374650XXX
Category: Forests and forestry
Language: EN, FR, DE, ES & NL

The Western Hemlock Book Excerpt:

Eastern Hemlock Forests

Eastern Hemlock Forests
Author: Jeffrey S. Ward
Publsiher: Unknown
Total Pages: 28
Release: 2004
ISBN: 1928374650XXX
Category: Eastern hemlock
Language: EN, FR, DE, ES & NL

Eastern Hemlock Forests Book Excerpt:

Hemlock Woolly Adelgid

Hemlock Woolly Adelgid
Author: Mark S. McClure
Publsiher: Unknown
Total Pages: 14
Release: 1996
ISBN: 1928374650XXX
Category: Tsuga
Language: EN, FR, DE, ES & NL

Hemlock Woolly Adelgid Book Excerpt:

Technology Transfer Hemlock Woolly Adelgid

Technology Transfer Hemlock Woolly Adelgid
Author: S. M. Salom,Timothy Cary Tigner,Richard C. Reardon
Publsiher: Unknown
Total Pages: 129
Release: 1996
ISBN: 1928374650XXX
Category: Tsuga
Language: EN, FR, DE, ES & NL

Technology Transfer Hemlock Woolly Adelgid Book Excerpt:

Errors from application of western hemlock site curves to mountain hemlock

Errors from application of western hemlock site curves to mountain hemlock
Author: Francis R. Herman,Jerry F. Franklin
Publsiher: Unknown
Total Pages: 135
Release: 1976
ISBN: 1928374650XXX
Category: Electronic Book
Language: EN, FR, DE, ES & NL

Errors from application of western hemlock site curves to mountain hemlock Book Excerpt:

Elongate Hemlock Scale

Elongate Hemlock Scale
Author: Mark S. McClure
Publsiher: Unknown
Total Pages: 4
Release: 2002
ISBN: 1928374650XXX
Category: Fiorinia externa
Language: EN, FR, DE, ES & NL

Elongate Hemlock Scale Book Excerpt:

The Eastern Hemlock

The Eastern Hemlock
Author: Clarence Ralph Letteer,Claude Raymond Tillotson,David Townsend Mason,Earl Hazeltine Frothingham,Elbert Clyde Lathrop,James Augustus Hyslop,Jay Allan Bonsteel,Marvin Merritte High,Philip Vincent Cardon,Stephen Oscar Jayne
Publsiher: Unknown
Total Pages: 35
Release: 1916
ISBN: 1928374650XXX
Category: Arsenic
Language: EN, FR, DE, ES & NL

The Eastern Hemlock Book Excerpt:

Hemlock Borer

Hemlock Borer
Author: Anonim
Publsiher: Unknown
Total Pages: 2
Release: 2000
ISBN: 1928374650XXX
Category: Eastern hemlock
Language: EN, FR, DE, ES & NL

Hemlock Borer Book Excerpt:

Hemlock Township Comprehensive Plan

Hemlock Township Comprehensive Plan
Author: Buchart-Horn,Hemlock Township Planning Commission
Publsiher: Unknown
Total Pages: 108
Release: 1969
ISBN: 1928374650XXX
Category: City planning
Language: EN, FR, DE, ES & NL

Hemlock Township Comprehensive Plan Book Excerpt:

The Eastern Hemlock

The Eastern Hemlock
Author: Earl Hazeltine Frothingham
Publsiher: Unknown
Total Pages: 43
Release: 1915
ISBN: 1928374650XXX
Category: Agriculture
Language: EN, FR, DE, ES & NL

The Eastern Hemlock Book Excerpt:

Proceedings Symposium On Sustainable Management Of Hemlock Ecosystems in Eastern North America June 22 24 1999 Durham New General T

Proceedings  Symposium On Sustainable Management Of Hemlock Ecosystems in Eastern North America  June 22 24  1999  Durham  New     General T
Author: Anonim
Publsiher: Unknown
Total Pages: 135
Release: 1980
ISBN: 1928374650XXX
Category: Forests and forestry
Language: EN, FR, DE, ES & NL

Proceedings Symposium On Sustainable Management Of Hemlock Ecosystems in Eastern North America June 22 24 1999 Durham New General T Book Excerpt:

Baseline Demographics of Late Successional Western Hemlock western Redcedar Stands in Northern Idaho Research Natural Areas

Baseline Demographics of Late Successional Western Hemlock western Redcedar Stands in Northern Idaho Research Natural Areas
Author: Melinda Moeur
Publsiher: Unknown
Total Pages: 16
Release: 1992
ISBN: 1928374650XXX
Category: Western hemlock
Language: EN, FR, DE, ES & NL

Baseline Demographics of Late Successional Western Hemlock western Redcedar Stands in Northern Idaho Research Natural Areas Book Excerpt:

Xylem Transport Models Optimize Effectiveness of Systemic Insecticide Applications for Controlling Hemlock Woolly Adelgid Adelges Tsugae

Xylem Transport Models Optimize Effectiveness of Systemic Insecticide Applications for Controlling Hemlock Woolly Adelgid  Adelges Tsugae
Author: Chelcy R. Ford
Publsiher: Unknown
Total Pages: 8
Release: 2010
ISBN: 1928374650XXX
Category: Eastern hemlock
Language: EN, FR, DE, ES & NL

Xylem Transport Models Optimize Effectiveness of Systemic Insecticide Applications for Controlling Hemlock Woolly Adelgid Adelges Tsugae Book Excerpt:

The hemlock woolly adelgid (HWA, Adelges tsugae Annand) is causing widespread decline and mortality of eastern hemlock trees (Tsuga canadensis (L.) Carr.). Stem injection of insecticide is widely used as a control measure, but its effectiveness depends on individual tree hydraulic characteristics. Recent work has shown that eastern hemlock daily water use is exponentially related to tree diameter, with smaller-diameter trees using significantly less water than largerdiameter trees. In this study we modeled daily water use for 20 eastern hemlock trees across a range of diameters. Based on expected daily water use and, thus, potential xylem transport of insecticide, we applied a dosage estimated to achieve a lethal and uniform xylem sap concentration of imidacloprid to half the trees (xylem transport treatment), and treated the remaining half based on the manufacturerrecommended dosage (MFR treatment), which is a linear function of tree diameter. At 4 and 56 weeks after treatment, we assessed all trees for the presence or absence of new shoot growth and live HWA population density. We found that both treatment dosages significantly reduced live HWA populations; however, 4 weeks after treatment, live HWA population density was 32 percent lower (LSMEANS) on xylem transport treatment trees compared with MFR treatment trees (treatment by time interaction, P = 0.006). Both treatment dosages also significantly increased the proportion of new shoot growth; however, over time xylem transport treatment trees had a significantly greater increase in new shoot production compared with MFR treatment trees. We conclude that dosages based on a xylem transport model not only significantly improved tree health more than the trees receiving the current recommended dosage, but also caused greater reductions in the live HWA population. Improving treatment dosages would reduce treatment cost, nontargeted effects, and would allow land managers to treat a greater number of trees.