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Articles 511 - 540 of 545

Full-Text Articles in Genetics and Genomics

Effects Of Phenylmercuric Acetate On The Transpiration And Physiology Of Quaking Aspen, Kenneth O. Higginbotham Jan 1970

Effects Of Phenylmercuric Acetate On The Transpiration And Physiology Of Quaking Aspen, Kenneth O. Higginbotham

Aspen Bibliography

No abstract provided.


Natural Regeneration Of White Spruce Under Spruce-Aspen Shelterwood, B-18a Forest Section, Alberta, J. C. Lees Jan 1970

Natural Regeneration Of White Spruce Under Spruce-Aspen Shelterwood, B-18a Forest Section, Alberta, J. C. Lees

Aspen Bibliography

No abstract provided.


The Effects Of Some Silvicultural And Soil Treatments On Aspen (Populus Tremuloides Michx.) Reproduction In Northern Utah, Calvin O. Baker Jan 1969

The Effects Of Some Silvicultural And Soil Treatments On Aspen (Populus Tremuloides Michx.) Reproduction In Northern Utah, Calvin O. Baker

Aspen Bibliography

No abstract provided.


The Effect Of Cattle, Sheep, And Other Factors On Aspen (Populus Tremuloides) Reproduction After Clear-Cut Logging In Southern Utah, Paul A. Lucas Jan 1969

The Effect Of Cattle, Sheep, And Other Factors On Aspen (Populus Tremuloides) Reproduction After Clear-Cut Logging In Southern Utah, Paul A. Lucas

Aspen Bibliography

No abstract provided.


Populus: A Bibliography Of World Literature, 1854-1963, R.E. Farmer Jr., J.S. Mcknight Jan 1969

Populus: A Bibliography Of World Literature, 1854-1963, R.E. Farmer Jr., J.S. Mcknight

Aspen Bibliography

No abstract provided.


Eleventh Random Sample Laying Test : 1967-68 Cages, Department Of Agriculture, Western Australia Jan 1969

Eleventh Random Sample Laying Test : 1967-68 Cages, Department Of Agriculture, Western Australia

Journal of the Department of Agriculture, Western Australia, Series 4

ELEVENTH RANDOM SAMPLE LAYING TEST,

1967-68 - CAGES

POULTRY RESEARCH STATION, WEMBLEY

SIXTH PROGRESSIVE REPORT TO 3rd NOVEMBER, 1968


Evaluation Of The Effects Of Reduced Transpiration Upon Soil Moisture Retention In An Aspen Stand Throughout The Growing Season In Northern Utah, Michael Zan Jan 1968

Evaluation Of The Effects Of Reduced Transpiration Upon Soil Moisture Retention In An Aspen Stand Throughout The Growing Season In Northern Utah, Michael Zan

Aspen Bibliography

No abstract provided.


Soil Moisture Recharge In Stands Of Quaking Aspen And Gambel Oak In Central Utah, James L. Boynton Jan 1968

Soil Moisture Recharge In Stands Of Quaking Aspen And Gambel Oak In Central Utah, James L. Boynton

Aspen Bibliography

No abstract provided.


Special Field Days For Merino Breeders, Department Of Agriculture, Western Australia Jan 1967

Special Field Days For Merino Breeders, Department Of Agriculture, Western Australia

Journal of the Department of Agriculture, Western Australia, Series 4

More than 200 Merino stud breeders attended special stud breeding and fertility field days arranged for them by the Department of Agriculture recently.

Breeders attending represented some 40 per cent of the State's Merino studs.


Manipulation Of Water Use In An Aspen Forest, John D. Schultz, George B. Coltharp, George E. Hart, Jr., Michael Zan Jan 1967

Manipulation Of Water Use In An Aspen Forest, John D. Schultz, George B. Coltharp, George E. Hart, Jr., Michael Zan

Aspen Bibliography

No abstract provided.


Twinning Increases Production, K P. Croker Jan 1966

Twinning Increases Production, K P. Croker

Journal of the Department of Agriculture, Western Australia, Series 4

Many breeders claim that twinning causes too many losses among Merino lambs and does not favour breeding for twin lamb production.

But recent experiments have proved otherwise and agricultural scientists now agree that . . .

TWINNING INCREASES PRODUCTION

THE low marking percentages regularly recorded for Merino flocks suggest that the Merino is a relatively infertile breed.

Certainly, lambing percentages are low when compared with those of most British breeds of sheep.


Influence Of Fire On Aspen, K. W. Horton, E. J. Hopkins Jan 1966

Influence Of Fire On Aspen, K. W. Horton, E. J. Hopkins

Aspen Bibliography

No abstract provided.


Review Of Silvicultural Research: White Spruce And Trembling Aspen Cover Types, Mixedwood Forest Section, Boreal Forest Region, Alberta-Saskatchewan-Manitoba, J. M. Jarvis, G. A. Steneker, R. M. Waldron, J. C. Lees Jan 1966

Review Of Silvicultural Research: White Spruce And Trembling Aspen Cover Types, Mixedwood Forest Section, Boreal Forest Region, Alberta-Saskatchewan-Manitoba, J. M. Jarvis, G. A. Steneker, R. M. Waldron, J. C. Lees

Aspen Bibliography

The Department of Forestry has been carrying on silvicultural research in the white spruce (Picea glauca (Moench) Voss) and trembling aspen (Populus tremuloides Michx.) cover types in the Mixedwood Forest Section of Alberta, Saskatchewan and Manitoba for about 40 years. Because of the needs of industry most of this research has been focused on spruce, and only as small portion on aspen. Much of the research is concerned with basic problems and the findings in one area may be applied directly or with minor modification throughout the entire Mixedwood Forest Section. Only a minor part of the total …


Aspen-Elk Relationships On The Northern Yellowstone Winter Range, William J. Barmore Jr. Apr 1965

Aspen-Elk Relationships On The Northern Yellowstone Winter Range, William J. Barmore Jr.

Aspen Bibliography

No abstract provided.


Cacodylic Acid As A Silvicide, Maurice W. Day Feb 1965

Cacodylic Acid As A Silvicide, Maurice W. Day

Aspen Bibliography

This report deals with the effectiveness of cacodylic acid (dimethylarsenic acid) as a silvicide for undesirable trees. Cacodylic acid has been used successfully as an herbicide for the destruction of grasses and weeds. Experimental work with this material was begun during the 1963 field season, and continued during 1964, to permit complete evaluation of the results. It appears that cacodylic acid has considerable potential as a silvicide.


Aspen Snag Yields Record Bitterbrush Seed Cache, Edward R. Schneegas Jan 1965

Aspen Snag Yields Record Bitterbrush Seed Cache, Edward R. Schneegas

Aspen Bibliography

No abstract provided.


Volume Tables For Aspen In Colorado, Geraldine Peterson Aug 1961

Volume Tables For Aspen In Colorado, Geraldine Peterson

Aspen Bibliography

No abstract provided.


Bee Farming : Maintaining Productive Stock, R S. Coleman Jan 1961

Bee Farming : Maintaining Productive Stock, R S. Coleman

Journal of the Department of Agriculture, Western Australia, Series 4

EVERY bee hive must be a productive unit, headed by a young vigorous queen, to to make sure of the greatest possible return from capital invested in the commercial apiary.


Some Aspects Of Regeneration Silviculture In Spruce-Aspen Stands In Alberta, L. A. Smithers Jul 1959

Some Aspects Of Regeneration Silviculture In Spruce-Aspen Stands In Alberta, L. A. Smithers

Aspen Bibliography

Surveys of spruce-aspen stands in Northern Alberta have shown that natural regeneration of white spruce is generally a failure on areas which have been logged but not burned (Candy 1951).


Growth Of Alberta White Spruce After Release From Aspen Competition, L. A. Smithers, G Ontkean Jan 1959

Growth Of Alberta White Spruce After Release From Aspen Competition, L. A. Smithers, G Ontkean

Aspen Bibliography

At the present time spruce sawtimber is the most important single commodity produced from the forests of Alberta.


Aspen Leaf Blight In The Intermountain Region, James L. Mielke Mar 1957

Aspen Leaf Blight In The Intermountain Region, James L. Mielke

Aspen Bibliography

No abstract provided.


The Growth And Yield Of Aspen In Saskatchewan, C. L. Kirby, W. S. Bailey, J. G. Gilmour Jan 1957

The Growth And Yield Of Aspen In Saskatchewan, C. L. Kirby, W. S. Bailey, J. G. Gilmour

Aspen Bibliography

No abstract provided.


Field Guide To Aid In Recognition Of Natural Triploid Aspen, Philip N. Joranson, Dean W. Einspahr, J P. Van Buijtenen Jan 1957

Field Guide To Aid In Recognition Of Natural Triploid Aspen, Philip N. Joranson, Dean W. Einspahr, J P. Van Buijtenen

Aspen Bibliography

Swedish experience with the genetic improvement of the European aspen (Populus tremula L.), a species which is closely kin to our North American quaking aspen (P. tremuloides Michx.), suggests that the rate of volume increment and the length of fiber tracheids might both be increased in North American aspen by finding or producing trees which possess a triple set, rather than the usual double set, of "chromosomes". Chromosomes (Figure 1) are found within and inner region--the nucleus--of each of the millions of cells formed during the growth of a tree.


Early Release From Aspen Improves Yield Of Pine Plantations, E.I. Roe Jan 1951

Early Release From Aspen Improves Yield Of Pine Plantations, E.I. Roe

Aspen Bibliography

No abstract provided.


Aspen Management Problems Of The Lake States, Z.A. Zasada Jun 1950

Aspen Management Problems Of The Lake States, Z.A. Zasada

Aspen Bibliography

No abstract provided.


How To Control Undesirable Trees And Shrubs, Maurice W. Day May 1950

How To Control Undesirable Trees And Shrubs, Maurice W. Day

Aspen Bibliography

No abstract provided.


Aspen Defiberization And Refining Of Product, Robert Craig Jr. Mar 1948

Aspen Defiberization And Refining Of Product, Robert Craig Jr.

Aspen Bibliography

Because of the great demand for wood fiber and because there is an abundance of aspen available1/ for this purpose, its conversion into a usable fiberized material offers possibilities. It also affords an outlet for low-quality bolts developed in any aspen logging operation or from land of poor quality.


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.


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 …


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 …