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Articles 11401 - 11430 of 11526

Full-Text Articles in Life Sciences

Aspen For Containers, Waldo Sands Jul 1947

Aspen For Containers, Waldo Sands

Aspen Bibliography

Aspen, because of its abundance in the Lake States, merits special consideration as to future management, utilization, and marketing. Although aspen lumber is used for many purposes, its chief use during the past decade has been for containers (boxes and crates). It gained its greatest prominence as container material during World War II.

Both producers and users of containers need general information as to availability and supply of aspen, its properties and usefulness for container material. With that in mind, this report on the use of aspen for containers has been prepared.


Mechanical Properties Of Aspen, R. P. A. Johnson Jul 1947

Mechanical Properties Of Aspen, R. P. A. Johnson

Aspen Bibliography

The clear wood of aspen has inherent properties of merit. Several of these properties are familiar to a large proportion of the general public, for some of the common types of matches are made of this wood. The requirements of wood for matches are exacting in that the wood must combine straightness of grain, ease of splitting, ease of working, and toughness To meet such rigid requirements, a wood must be suitable for other uses as well. The fact that aspen is not used more widely for other purposes lies not in the wood itself but in other factors, such …


Possibilities Of Managing Aspen, Paul Zehngraff Jun 1947

Possibilities Of Managing Aspen, Paul Zehngraff

Aspen Bibliography

The management of aspen or popple (Populus tremuloides) has received little attention in the past, largely because of the former abundant supply of other and more valuable tree species in the Lake States. Be- cause of a rapidly expanding market for all forest products during the past decade, particularly during the war, the attention and ingenuity of industry have turned toward the use of aspen. As a consequence, aspen has now become one of the important pulpwood species in the Lake States, and is used for many other products. That it will retain its place for some time to come …


Aspen Availability And Supply, Clarence D. Chase Jun 1947

Aspen Availability And Supply, Clarence D. Chase

Aspen Bibliography

A knowledge of the total and available supply of aspen is basic to a study of the aspen situation. Hence, this paper aims to show the relative position of aspen2/ as a commercial forest type in the Lake States region, both currently and potentially. The data on areas, volumes, and growth are taken from the Forest Survey made in 1933-37, brought up to January 1, 1945, by office calculations including drain studies. Areas by site quality, allowable cut calculations, and volumes of timber available (1945 to I960) are the best estimates that can be made at this time.


Bulletin No. 5: The Connecticut Arboretum, Richard H. Goodwin May 1947

Bulletin No. 5: The Connecticut Arboretum, Richard H. Goodwin

Bulletins

No abstract provided.


Aspen Properties And Uses, Zigmond A. Zasada May 1947

Aspen Properties And Uses, Zigmond A. Zasada

Aspen Bibliography

Because of the large demand for lumber during the last 10 years, and particularly during the war period, aspen has entered many new fields of use. At present there is widespread interest in the possibilities of building new industries and extending the life of old ones by increased use of aspen. Many people are interested in becoming familiar with this wood. This report has been prepared to give general information on the properties and present uses of aspen and also to help in correcting some of the existing erroneous ideas about this wood.


Response Of Young Aspen Suckers To Overhead Shade, P.J. Zehngraff Jan 1947

Response Of Young Aspen Suckers To Overhead Shade, P.J. Zehngraff

Aspen Bibliography

No abstract provided.


Alkali Tolerance Of Drought-Hardy Trees And Shrubs In The Seed And Seedling Stage, Joseph H. Stoeckeler Apr 1946

Alkali Tolerance Of Drought-Hardy Trees And Shrubs In The Seed And Seedling Stage, Joseph H. Stoeckeler

Journal of the Minnesota Academy of Science

No abstract provided.


Season Of Cutting Affects Aspen Sprouting, P.J. Zehngraff Jan 1946

Season Of Cutting Affects Aspen Sprouting, P.J. Zehngraff

Aspen Bibliography

No abstract provided.


The Future Of Aspen In The Lake States, Z.A. Zasada, W.A. Kluender Jan 1946

The Future Of Aspen In The Lake States, Z.A. Zasada, W.A. Kluender

Aspen Bibliography

No abstract provided.


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.