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Articles 11371 - 11400 of 11486

Full-Text Articles in Forest Sciences

Shoot Blight Of Aspen And Poplar Caused By Species Of Fusicladium, W.C. Hatfield Jan 1946

Shoot Blight Of Aspen And Poplar Caused By Species Of Fusicladium, W.C. Hatfield

Aspen Bibliography

No abstract provided.


The Effect Of Thinning Upon The Growth And Yield Of Aspen Stands (For Ten-Year Period After Treatment). Project P-19, A. Bickerstaff Jan 1946

The Effect Of Thinning Upon The Growth And Yield Of Aspen Stands (For Ten-Year Period After Treatment). Project P-19, A. Bickerstaff

Aspen Bibliography

No abstract provided.


The Yale Forest In Tolland And Windham Counties, Connecticut, Walter H. Meyer, Basil A. Plusnin Jan 1945

The Yale Forest In Tolland And Windham Counties, Connecticut, Walter H. Meyer, Basil A. Plusnin

Yale School of the Environment Bulletin Series

No abstract provided.


Seeding Grass On Deteriorated Aspen Range, A. Perry Plummer, George Stewart Oct 1944

Seeding Grass On Deteriorated Aspen Range, A. Perry Plummer, George Stewart

Aspen Bibliography

The herbaceous undercover on much of the aspen range in the Intermountain region is badly deteriorated. These areas, naturally highly productive, when revegetated can contribute greatly towards a much needed supply of range forage. One of the major obstacles to successful seeding has been the difficulty of getting the seeds covered with soil since both standing and fallen trees interfere with the use of drills, harrows, or other machinery. In the search for methods to overcome this difficulty, it was found that for open aspen stands the covering of seeds is unnecessary when the right precautions are taken in other …


The Root System Of Aspen, Maurice W. Day Jan 1944

The Root System Of Aspen, Maurice W. Day

Aspen Bibliography

The quaking aspen (Populus tremuloides Michx.) is widely distributed. In the Lake States region it occupies a larger area than any other tree species. Because it occupies such a large are and because of the difficult silvicultural problem which it presents, this species demands careful investigation. This present study was initiated with the objective of adding to the knowledge of the silvics of the species.


Influence Of Aspen, Young Lodgepole Pine, And Open Grassland Types Upon Factors Affecting Water Yield, E.G. Dunford, C.H. Niederhof Jan 1944

Influence Of Aspen, Young Lodgepole Pine, And Open Grassland Types Upon Factors Affecting Water Yield, E.G. Dunford, C.H. Niederhof

Aspen Bibliography

Burned and cutover lands in the Rocky Mountains present a distinct problem in watershed management. Many of these areas support a cover of grass or aspen rather than their original stand of lodgepole pine or spruce. Generally the new cover provides adequate protection from erosion, but there has been question regarding its other watershed qualities. In order to evaluate some of these qualities this preliminary study was undertaken in Colorado. The results indicate that, from the standpoint of water available for streamflow, aspen and grass are probably superior to a dense coniferous forest.


Volume Tables For Connecticut Hardwoods, Walter H. Meyer, Raymond Kienholz Jan 1944

Volume Tables For Connecticut Hardwoods, Walter H. Meyer, Raymond Kienholz

Yale School of the Environment Bulletin Series

No abstract provided.


How To Reseed Utah Range Lands, A. Perry Plummer, Richard M. Hurd, C. Kenneth Pearse Jun 1943

How To Reseed Utah Range Lands, A. Perry Plummer, Richard M. Hurd, C. Kenneth Pearse

Aspen Bibliography

Additional low cost forage is urgently needed by Utah's range livestock industry. Seeding of depleted tracts in accordance with recently developed methods and principles will help supply this forage and is entirely feasible. Where the value of the increased forage will repay the cost of planting, careful reseeding of selected sites is fully justified.

The important part that reseeding can play in restoring ranges to their former capacity has been demonstrated. Although satisfactory results can be obtained on many sites during average or better years, much more study is needed to insure consistent success in abnormal years and to extend …


Establishment, Development, And Management Of Conifer Plantations In The Eli Whitney Forest, New Haven, Connecticut, Ralph C. Hawley, Harold J. Lutz Jan 1943

Establishment, Development, And Management Of Conifer Plantations In The Eli Whitney Forest, New Haven, Connecticut, Ralph C. Hawley, Harold J. Lutz

Yale School of the Environment Bulletin Series

No abstract provided.


White Pine Blister Rust In Western North America, J. L. Mielke Jan 1943

White Pine Blister Rust In Western North America, J. L. Mielke

Yale School of the Environment Bulletin Series

No abstract provided.


Suitability Of Birch, Aspen And Sugarberry For Rayon Pulp: Results Of Certain Sulfite Pulping And Bleaching Experiments, H. Nihlen, J.N. Mcgovern Jan 1943

Suitability Of Birch, Aspen And Sugarberry For Rayon Pulp: Results Of Certain Sulfite Pulping And Bleaching Experiments, H. Nihlen, J.N. Mcgovern

Aspen Bibliography

No abstract provided.


Report On Sanitation And Fertilization Tests In Aspen Stands On Bright Angel Point, Grand Canyon National Park, Stuart R. Andrews Jan 1943

Report On Sanitation And Fertilization Tests In Aspen Stands On Bright Angel Point, Grand Canyon National Park, Stuart R. Andrews

Aspen Bibliography

No abstract provided.


A Study Of The Ring-Necked Pheasant (Phasianus Colchicus Torquatus Gmelin) In Northern Utah, William T. Mckean May 1942

A Study Of The Ring-Necked Pheasant (Phasianus Colchicus Torquatus Gmelin) In Northern Utah, William T. Mckean

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Purpose of Study. The ring-necked pheasant (Phasianus colchicus torquatus Gmelin) is well enough known to need no introduction. It is at present undoubtedly the most abundant and most important gallinaceous game bird in northern Utah. Its abundance and its occurrence in agricultural areas has stimulated much general interest. Yet, aside from two food habits studies, both conducted in Utah County, no intensive research has been made into its ecological relationships or its general life history in Utah.

In order to formulate sound management plans for the pheasant in Utah, the Utah Cooperative Wildlife Research Unit has felt the need …


Yield Of Even-Aged Stands Of Loblolly Pine In Northern Louisiana, Walter H. Meyer Jan 1942

Yield Of Even-Aged Stands Of Loblolly Pine In Northern Louisiana, Walter H. Meyer

Yale School of the Environment Bulletin Series

No abstract provided.


Decay Of Western Hemlock In Western Oregon And Washington, G. H. Englerth Jan 1942

Decay Of Western Hemlock In Western Oregon And Washington, G. H. Englerth

Yale School of the Environment Bulletin Series

No abstract provided.


Growing Of White Pine On The Yale Forest Near Keene, New Hampshire, Ralph C. Hawley, Robert T. Clapp Jan 1942

Growing Of White Pine On The Yale Forest Near Keene, New Hampshire, Ralph C. Hawley, Robert T. Clapp

Yale School of the Environment Bulletin Series

No abstract provided.


Management Of Loblolly Pine In The Pine-Hardwood Region In Arkansas And In Louisiana West Of The Mississippi River, Herman H. Chapman Jan 1942

Management Of Loblolly Pine In The Pine-Hardwood Region In Arkansas And In Louisiana West Of The Mississippi River, Herman H. Chapman

Yale School of the Environment Bulletin Series

No abstract provided.


Bulletin No. 4: The Connecticut Arboretum, Its Tenth Anniversary, George S. Avery Oct 1941

Bulletin No. 4: The Connecticut Arboretum, Its Tenth Anniversary, George S. Avery

Bulletins

No abstract provided.


The Effect Of Fomes Ignarius On Populus Tremuloides In The Gallatin National Forest Of Montana, Marvin F. Kelly Jun 1941

The Effect Of Fomes Ignarius On Populus Tremuloides In The Gallatin National Forest Of Montana, Marvin F. Kelly

Aspen Bibliography

No abstract provided.


Hardiness Of Woody Plants In Minnesota, H. E. Stork Apr 1941

Hardiness Of Woody Plants In Minnesota, H. E. Stork

Journal of the Minnesota Academy of Science

No abstract provided.


Penetration Of The Walls Of Wood Cells By The Hyphae Of Wood-Destroying Fungi, Phimister Proctor Jr. Jan 1941

Penetration Of The Walls Of Wood Cells By The Hyphae Of Wood-Destroying Fungi, Phimister Proctor Jr.

Yale School of the Environment Bulletin Series

No abstract provided.


Restoring Conifers To Aspen Lands In The Lake States, Hardy Lomax Shirley Jan 1941

Restoring Conifers To Aspen Lands In The Lake States, Hardy Lomax Shirley

Aspen Bibliography

With the advent of commercial logging and land clearing in the Lake States, some 70 years ago, aspen and brush began a rapid


Trees And Shrubs Of Kings Canyon National Park, Kenneth M. Stocking Jan 1941

Trees And Shrubs Of Kings Canyon National Park, Kenneth M. Stocking

University of the Pacific Theses and Dissertations

In 1935 I first visited the Kings Canyon area. Since then I have spent many hours wandering through the woods and over the mountains in the area around the old General Grant National Park and the country which is now included in the Kings Canyon National Park. To my knowledge, no complete flora has been made for this vicinity. I consider the following pages to be the beginning of a fascinating work. It is the beginning because this paper includes only plants with woody stems.


Longevity Of Red Pine Seed, Eugene I. Roe Apr 1940

Longevity Of Red Pine Seed, Eugene I. Roe

Journal of the Minnesota Academy of Science

No abstract provided.


Asterolecanium Variolosum Ratzeburg, A Gall-Forming Coccid, And Its Effect Upon The Host Trees, Thaddeus Parr Jan 1940

Asterolecanium Variolosum Ratzeburg, A Gall-Forming Coccid, And Its Effect Upon The Host Trees, Thaddeus Parr

Yale School of the Environment Bulletin Series

No abstract provided.


Disturbance Of Forest Soil Resulting From The Uprooting Of Trees, Harold J. Lutz Jan 1940

Disturbance Of Forest Soil Resulting From The Uprooting Of Trees, Harold J. Lutz

Yale School of the Environment Bulletin Series

No abstract provided.


Studies In Forest Pathology. Iii. Hypoxylon Canker Of Poplar, J.E. Bier Jan 1940

Studies In Forest Pathology. Iii. Hypoxylon Canker Of Poplar, J.E. Bier

Aspen Bibliography

It is generally accepted that the economic importance of poplar is increasing, and a more detailed knowledge of the diseases affecting the various species is urgently needed.

This investigation deals with a canker disease found on aspen poplar (Populus tremuloides Michx. and P. grandidentata Michx.) resulting from the attack of the fungus Hypoxylon pruinatum (Klotzsch) Cooke. The heavy mortality due to Hypoxylon canker in widely separated regions clearly indicates this to be a most destructive disease of young aspen. Lorenz and Christensen (15) after making a survey of the disease in the Lake States mention that "Hypoxylon pruinatum …


Weather And Plant-Development Data As Determinants Of Grazing Periods On Mountain Range, David F. Costello, Raymond Price May 1939

Weather And Plant-Development Data As Determinants Of Grazing Periods On Mountain Range, David F. Costello, Raymond Price

Aspen Bibliography

Fundamental in economical range-resource management is the determination of proper grazing periods. It is of prime importance to be able to establish a date in the spring when the range has produced sufficient feed to keep livestock in thrifty condition, when it is reasonably safe from excessive trampling and packing of the soil, and when the more important key forage plants have attained sufficient development to withstand grazing use. Such opening dates, as well as the time to defer and rotate grazing and to remove livestock from the range, are dependent in part on the prevailing weather conditions and on …


The Ecology Of Agropyron Inerme On Protected And Heavily Grazed Range Land In Cache Valley, Utah, Wallace R. Hanson May 1939

The Ecology Of Agropyron Inerme On Protected And Heavily Grazed Range Land In Cache Valley, Utah, Wallace R. Hanson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

During the past decade much attention has been attracted to the great range lands of the West. The inherently low productivity of these arid lands coupled with abnormal drought and constantly heavy use by livestock because of lack of grazing control, have caused these lands to become greatly depleted over most of the West. That the vegetation on most range land in the intermountain states is depleted appreciably is evident to the careful observer. Undoubtedly the vegetation of much of the range has decreased in quantity, but more serious in many cases is the decrease in quality. Valuable forage species …


The Role Of Forest Fires In The Reproduction Of Black Spruce, R. K. Lebarron Apr 1939

The Role Of Forest Fires In The Reproduction Of Black Spruce, R. K. Lebarron

Journal of the Minnesota Academy of Science

No abstract provided.