Life Sciences Commons^™

Bulletin No. 379 - Biology And Control Of The Peach Twig Borer (Anarsia Lineatella Zeller) In Utah, Charles J. Sorenson, Farrell H. Gunnell

UAES Bulletins

The peach twig borer, Anarsia lineatella Zeller, sometimes called the peach worm, annually damages peach, apricot, nectarine, prune, and plum orchards in Utah. Many buds and twig terminals are destroyed each spring by the overwintered generation of partially grown larvae. These emerge from their winter quarters almost as soon as host trees begin their spring growth. From the time the fruit becomes about half grown until it is harvested, later generations of twig-borer larvae feed on it causing irregular, gummy cavities which make it unfit for market.

In order to work out a control program for any insect, its life …

Some American Eucerini Bees, Charles D. Michener, W. E. Laberge, J. S. Moure

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No abstract provided.

Canephorulini, A Tribe Of South American Bees (Hymenopt.-Apoidea), Charles D. Michener, W. E. Laberge, J. S. Moure

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No abstract provided.

Bulletin No. 378 - Labor Structure And Labor Problems: Utah Sheep Ranches, 1952-1953, William A. Dehart, William H. Metzler

UAES Bulletins

This study deals with the problem sheep ranchers have in recruiting workers to meet their labor needs. Consideration is given to the composition of the work force on sheep ranches, to wages, the amount and causes of labor turnover, and to ways to reduce turnover. Labor recruitment practices are also discussed and evaluated in terms of available sources of farm labor, the possibilities of maintaining a stable supply, and the effect of farm labor problems on recent changes in the operations of sheep ranch enterprises. The primary focus of attention is on regular hired labor on Utah sheep ranches, although …

Some Biological Observations On Hoplitis Pilosifrons And Stelis Lateralis (Hymenoptera, Megachilidae), Charles D. Michener

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No abstract provided.

Bulletin No. 377 - Performance Testing Studies With Beef Cattle, James A. Bennett, Doyle J. Matthews

UAES Bulletins

The goal in beef cattle breeding is the production of animals that make rapid and efficient gains and have desirable conformation. Performance testing has recently been advanced as a means of identifying individuals possessing superior productive qualities and as a means of evaluating sires for transmitting these qualities to their offspring. This report gives the results of performance tests conducted with Hereford and Shorthorn calves fed over a constant time period as well as the results of a supplemental study undertaken to gain information that might add refinement to the evaluation of gains in beef cattle.

Bulletin No. 376 - Potato Production, Utah 1953: An Economic Analysis, E. M. Morrison, W. G. Kearl

UAES Bulletins

The potato enterprise is important in providing a cash crop and a means of diversifying and intensifying the operations on many of Utah's irrigated farms. It is particularly important in those areas where, because of short growing season or inadequate markets, other intensive crops cannot be produced economically.

Potatoes have accounted for around 2.5 percent of the total cash farm income and around 10 percent of the cash farm income from crop sales over the past several years. The gross value of the crop has been between four and five million dollars in 8 of the last 12 years from …

Pollination (In Growing Alfalfa For Seed), George E. Bohart, William P. Nye, Marshall D. Levin

All PIRU Publications

No abstract provided.

Site Identification For Bigtooth Aspen Sucker Stands, S.A. Graham, R.P. Harrison

Aspen Bibliography

Bigtooth aspen (Populus grandidentata) is an upland species that reaches its best development on relatively moist, loamy and sandy soils. Following logging of this tree, reproduction is almost invariably by root suckers which, in clear-cuttings, appear in profusion. Because these suckers are supported by the fully developed root systems of the parent trees, they grow at an almost unbelievably rapid rate on both good and poor sites. As a result it is impossible to recognize site quality from their growth rate alone. For this reason other indicators of site are needed in order to judge the potentialities of …

Bulletin No. 375 - Eradication Of Mule Ear With Herbicides And Its Relation To Production Of Forage On Range Lands, D. C. Tingey, C. Wayne Cook

UAES Bulletins

Mule ear (Wyethia amplexicaulis) , also known as green dock and black sunflower, is a tufted perennial with smooth waxy leaves and a thick woody taproot. It reproduces only by seed, yet it is aggressive, and once it becomes established it is highly competitive.

Cattle seldom eat mule ear when other forage is available; however, sheep eat the heads when in full bloom and occasionally consume a small quantity of the young leaves before they completely unfold. Since mule ear is relatively unpalatable, it increases in density with continued heavy use of the range and in some cases …

Bulletin No. 374 - Fertilizer Reuirements Of Alfalfa Hay In Utah, R. F. Nielson, J. P. Thorne, G. T. Baird

UAES Bulletins

This bulletin is a report of one phase of research in agronomy. What is agronomy? Agronomy is the science of crop production and soil management and includes a scientific study of all phases of soils and soil conservation, irrigation practices, fertilizer usage, crop rotations, plant breeding, selection and management of new crop varieties, weed control, and other practices that lead to increased production of better quality crops.

Additional Techniques For Studying The Behavior Of Wild Bees (I), Charles D. Michener, Earle A. Cross, Howell V. Daly, Carl W. Rettenmeyer, Alvaro Wille

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No abstract provided.

Time Relationships In The Nest Construction And Life Cycle Of The Alkali Bee, George E. Bohart, Earle A. Cross

All PIRU Publications

No abstract provided.

Gradual Nest Supersedure Within The Genus Osmia, George E. Bohart

All PIRU Publications

No abstract provided.

Selection Of Pollens By Honey Bees, M. D. Levin, George E. Bohart

All PIRU Publications

No abstract provided.

Alkali Bees Vs. Drainage, George E. Bohart

All PIRU Publications

No abstract provided.

New Records Of Hornia Minutipennis Riley, With Notes On Its Biology (Coleoptera, Meloidae), George E. Bohart, Richard B. Selander

All PIRU Publications

No abstract provided.

Deer, Mice, And Hares Damage Young Aspen And Paper Birch Plantings In Norteastern Wisconsin, Joseph Henry Stoeckeler

Aspen Bibliography

In the Spring of 1951, a planting of wilding quaking aspen and paper birch was made on the Argonne Experimental Forest in northeastern Wisconsin on open sodded land prepared with a heavy disk.

A Review Of Literature Relating To Quaking Aspen (Populus Tremuloides) Sites, M.L. Heinselman, Z.A. Zasada

Aspen Bibliography

No abstract provided.