Life Sciences Commons^™

Bulletin No. 383 - Cooperative Nutritional Status Studies In The Western Region: I. Nutrient Intake, Ethelwyn B. Wilcox, Helen L. Gillum, Margaret M. Hard

UAES Bulletins

In 1947, a concerted study of the nutritional status of selected population groups was initiated in the western region of the United States. Previous dietary surveys had indicated that substantial portions of the country's population were consuming lower than recommended levels of essential nutrients. Deficiency diseases that may have nutritional background, such as dental caries, anemia, and rickets, existed. Investigators reported subclinical signs of malnutrition in several areas. Few studies had been made in the West, although reports of high incidence of dental caries and suspected undernutrition had come from several western states. The regional committee thought it evident that …

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. 330 - Peach Orchard Soil Mangement Studies, A. L. Stark, D. W. Thorne

UAES Bulletins

Peaches are the most important fruit crop in Utah. The total number of peach trees is greater and the volume of fruit produced for market is larger than of any other fruit. Most of the peaches are produced by a large number of growers who have small plantings. These small orchards contribute substantially to the total income of the growers and it is, therefore, important that maximum yields of high quality fruit be obtained from limited acreage.

A survey of the fruit production problems in Utah reported in 1938 (13) indicated that poor soil management practices were important in contributing …

Bulletin No. 267 - Muck-Soil Management And Crop-Production Studies: Sanpete County Experimental Farm 1927 To 1933, Inclusive, Le Moyne Wilson

UAES Bulletins

The muck soil area in Sanpete County, where these investigations were conducted, comprises approximately 6500 acres, 4209 of which are included in the San Pitch Drainage District. This region is located in the south end of Sanpete Valley and west of the towns of Ephraim and Manti. During part of the year the lands involved were subject to overflow by the San Pitch River. Water covered most of the area early in the winter, and during the spring months high water kept it submerged until June. Before the neighboring communities were settled by white people, this area was probably submerged …

Bulletin No. 270 - Soil-Management And Crop-Production Studies, I. D. Zobell

UAES Bulletins

Carbon County is the greatest bituminous coal-producing district in the state and ranks as one of the largest and best in the Intermountain West. In 1934 there were twenty-six operating coal mines from which approximately 5,000,000 tons of coal were mined each year. These mines create work for hundreds of men. Many people in this section farm in the summer and mine during the winter months. In 1934 but 20,000 acres of land in this section were under cultivation, with little possibility of reclaiming additional land. Prior to 1928 crops had been somewhat restricted on account of the limited water-supply; …

Bulletin No. 245 - Cherry Pollination Studies In Utah, Francis M. Coe

UAES Bulletins

The cherry is rapidly becoming Utah's most important fruit crop. According to the 1930 census, there were 110,050 bearing and 114,230 non-bearing cherry trees in Utah orchards. Most of these trees are sweet cherries, the newer plantings consisting mainly of Bing and Lambert trees, although Napoleon predominated in the older plantings.

The problem of pollination is of more importance with the cherry than with other- fruits, because of the large number of individual fruits required to make a crop and because of the self-sterility and intersterility shown by the major commercial sweet varieties.

As has been shown by the investigations …

Bulletin No. 241 - Peach Harvesting Studies, F. M. Coe

UAES Bulletins

The purpose of the four seasons' study of maturity indexes of Elberta type peaches, made in Utah during the years 1926, 1928, 1929, and 1932 and presented in this publication, was to determine more accurately the best stage of maturity of peaches for distant shipment. In general, the procedure was: (1) To record color, pressure test, and other maturity indexes of fruit from trees under various conditions of culture, age, and vigor; (2) to classify the fruit by size and ground color; (3) to store under conditions comparable to refrigerated shipment to market; and (4) to record the appearance, quality, …

Bulletin No. 212 - Studies On The Morphology Of The Beet Leafhopper, G. F. Knowlton

UAES Bulletins

The beet leafhopper, Eutettix tenellus (Baker), is one of the most serious insect pests of western North America. Its chief importance is as a vector of the plant disease curly-top, which it transmits to beets, tomatoes, beans, melons, and many other agricultural plants. The virus apparently is introduced into the plant during the process of feeding, and is responsible for the frequent and often enormous losses to the sugar-beet growers and sugar manufacturers of the west. Apparently, the virus multiplies and remains active in the body of a leafhopper for some time, making it possible for the insect, after once …

Bulletin No. 158 - Soil Moisture Studies Under Dry-Farming, F. S. Harris, J. W. Jones

UAES Bulletins

Profitable cultivation of land under dry-farm conditions is dependent on the efficient use of precipitation. Soil fertility is not at present the limiting factor in crop production on most arid lands, but insufficient moisture to make available the fertility of these dry-lands is not only a limiting factor, but in most cases the controlling factor in crop production. The rainfall in the principal dry-farming areas of Utah varies from 12 to 15 inches a year. During different years it may range from 10 to 22 inches; therefore the best use must be made of the water that falls.

Bulletin No. 159 - Soil Moisture Studies Under Irrigation, F. S. Harris, A. F. Brakcen

UAES Bulletins

Under normal precipitation the variety of crops which can be successfully grown in the West is limited. Of necessity, irrigation was practised and with it came many complex problems. The water requirements of different crops, the water-holding capacity of soils, the movement of soil moisture, and numerous other related problems have given themselves up for investigational work.

Bulletin No. 150 - Further Studies Of The Nitric Nitrogen Content Of The Country Rock, Robert Stewart, William Peterson

UAES Bulletins

The progress of the work upon the general problem of the origin of the nitre spots in certain western soils has presented several different points of view. The fact that certain spots in western cultivated soils were rich in nitrates was first observed by Hilgard who attributed their accumulation to the more rapid nitrification of the organic matter of the soil in the warm arid climate of the west when the moisture limit was removed by irrigation.

Bulletin No. 154 - Irrigation And Manuring Studies Ii: The Effect Of Varying Quantities Of Irrigation Water And Manure On The Growth And Yield Of Corn, F. S. Harris, D. W. Pittman

UAES Bulletins

The present bulletin describes the results of an experiment on the irrigation and manuring of corn for the six years from 1911 to 1916, inclusive. The first three years' results of this experiment have already been published as Bulletin No. 133 of this Station. Besides the material discussed in that publication the present bulletin contains data on the composition of corn here presented for the first time.

Bulletin No. 145 - Soil Alkali Studies: Quantities Of Alkali Salts Which Prohibit The Growth Of Crops In Certain Utah Soils, F. S. Harris

UAES Bulletins

One of the most important questions connected with the alkali problem in arid soils is the determination of the limits of toxicity of the various alkali salts. The author has already presented considerable data on this subject; but most of these results were obtained under laboratory conditions and with the use of pure salts. The combinations of salts used were not necessarily the combinations found in actual field conditions. It seemed desirable, therefore, to extend these studies to the field in order to determine the exact concentration of the various alkalis that prohibits growth in crops. A study of this …

Bulletin No. 129 - Codling Moth Studies In 1911: The Driving Spray Under Excessively Wormy Conditions, E. D. Ball, W. M. Ball

UAES Bulletins

Spraying experiments against the codling moth were carried on upon the Smart orchard until the number of worms per tree was reduced to such an extent that no accurate comparisons could be made between different treatments. As a result of the work on this and other orchards, practically every commercial orchard in the valley was by this time well sprayed and the worms reduced to a point where one driving spray per season would keep them under control.

In the meantime a number of questions arose which required very wormy conditions to adequately investigate. Search was therefore made for orchards …