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Articles 6571 - 6600 of 6606

Full-Text Articles in Life Sciences

Circular No. 10 - The Control Of The Alfalfa Weevil, E. G. Titus Mar 1913

Circular No. 10 - The Control Of The Alfalfa Weevil, E. G. Titus

UAES Circulars

During the work with the alfalfa \weevil throughout several very different seasons and in different regions, of the State, a number of methods of control have been developed that bid fair to be of service in combating this insect. The prospect for the alfalfa grower in the infested area looks more hopeful each year. It is the purpose of this circular to give a brief account of the alfalfa weevil, its present distribution, and the principal methods that appear to be of value in its control.


Circular No. 13 - Fruit For Exhibition, Leon D. Batchelor Jan 1913

Circular No. 13 - Fruit For Exhibition, Leon D. Batchelor

UAES Circulars

The basis of a good fruit exhibit is necessarily good cultural conditions to produce good fruit. Then it depends on the exhibitor's ability to select his best fruit. Do not wait until the crop is picked to select show specimens. The successful exhibitor makes his prize selections in the orchard while the fruit i still on the tree. By viewing the fruit as it hangs naturally on the tree, and by carefully surveying the different trees in the orchard a good comparison of a large quantity of fruit can be made. The prize fruit is generally on the outermost branches, …


Shorter Articles And Reports: The Simultaneous Modification Of Distinct Mendelian Factors, R. A. Emerson Jan 1913

Shorter Articles And Reports: The Simultaneous Modification Of Distinct Mendelian Factors, R. A. Emerson

Department of Agronomy and Horticulture: Faculty Publications

In another paper on the inheritance of a recurring somatic variation in variegated ears of maize, it was shown that the amount of red color developed in the pericarp of variegated seeds bears a definite relation to the development of color in the progeny of such seeds. The relation is such that the more color there is in the pericarp of the seeds planted the more likely are they to produce plants with wholly self-red ears and correspondingly the less likely to produce plants with variegated ears. Self-red ears thus produced behave just as if they were hybrids between self-red …


Shorter Articles And Discussion Simplified Mendelian Formulae, R. A. Emerson Jan 1913

Shorter Articles And Discussion Simplified Mendelian Formulae, R. A. Emerson

Department of Agronomy and Horticulture: Faculty Publications

I was somewhat surprised by 'Morgan's and Castle's suggestions for a simplification of Mendelian formulae. My surprise was not occasioned so much by the forms these suggestions took as by the fact that any pronounced changes were deemed necessary. I had not only employed the usual formula in my own work but had found no difficulty worth mentioning in understanding the formula used by most other workers in Mendelian fields. My experience with students in elementary courses in genetics had not prepared me for the idea that such formula were particularly difficult. Nevertheless I believe in simplifying the formulae if …


The Possible Origin Of Mutations In Somatic Cells, R. A. Emerson Jan 1913

The Possible Origin Of Mutations In Somatic Cells, R. A. Emerson

Department of Agronomy and Horticulture: Faculty Publications

That mutations are accompanied by some change in the germ-plasm is, I take it, indisputable. Have we, however, any reason to suppose that the change takes place within the germ cells? I am not sure, as a matter of fact, that genetists in general regard the gametes as the place of origin of mutations. It is true, however, that experiments in the artificial production of mutations in plants have been limited largely to treatments of the ovaries from about the time of the reduction division to about the time of fertilization. This suggests a belief on the part of investigators …


Circular No. 7 - Labor Saving Devices For The Farm Home, Leah D. Widtsoe Jun 1912

Circular No. 7 - Labor Saving Devices For The Farm Home, Leah D. Widtsoe

UAES Circulars

This paper was written for and read before the first International Congress of Farm Women held at Colorado Springs, October 17th to 21st, 1911. A few changes have been made in the manuscript and some illustrations added.

The name indicates that it is written for the progressive farmers of some means--since all labor saving devices cost more or less money. The farm home which finds it difficult to keep flour in the barrel, naturally will not be interested in $125.00 water systems--except as an ideal they may attain to some day, and ideals are always helpful. To find ways and …


Circular No. 6 - Measurement And Distribution Of Irrigation Water, L. M. Winsor May 1912

Circular No. 6 - Measurement And Distribution Of Irrigation Water, L. M. Winsor

UAES Circulars

This circular has been prepared to meet the more urgent and immediate needs of the water user. The complications which usually arise in water measurement have been eliminated to such an extent that anyone who will follow the few simple instructions outlined in the following pages can learn to measure the flow of irrigation streams under ordinary conditions.


Circular No. 5 - Boys' Potato Clubs: How To Grow The Crop And Organization, J. C. Hogenson Feb 1912

Circular No. 5 - Boys' Potato Clubs: How To Grow The Crop And Organization, J. C. Hogenson

UAES Circulars

The object of the organization is to encourage, interest and instruct its members in agriculture, and particularly in the best methods of growing potatoes. "Efficiency" is the motto of the clubs. Efficiency in any good work is true and profitable education. To do good things intelligently and with cheerful spirit entitles the member to the highest degree of approval.


The Unexpected Occurrence Of Aleurone Colors In F2 Of A Cross Between Non-Colored Varieties Of Maize, R. A. Emerson Jan 1912

The Unexpected Occurrence Of Aleurone Colors In F2 Of A Cross Between Non-Colored Varieties Of Maize, R. A. Emerson

Department of Agronomy and Horticulture: Faculty Publications

Before the Mendelian methods of analysis became available, considerable wonder would doubtless have been excited by the "mysterious" appearance in F2 of one colored grain-purple or red-to every five or six white ones in case of a maize cross, both parents and F, of which had only white grains. An occurrence of this sort has recently been noted in one of my maize cultures and the F2 numbers are explained here as a trihybrid or tetrahybrid ratio. The crosses in question were made primarily for a study of size inheritance and fairly large numbers have been grown. The varieties …


Discussion And Correspondence Coupling Vs. Random Segregation, R. A. Emerson Jan 1911

Discussion And Correspondence Coupling Vs. Random Segregation, R. A. Emerson

Department of Agronomy and Horticulture: Faculty Publications

To the editor of science: The suggestion offered by Morgan, in SCIENCE of September 22, to account for the coupling and repulsion of factors for various characters in inheritance in such forms as Abraxas, Drosophila, fowls, sweet peas, etc., incites this note.

Briefly Morgan's hypothesis is (1) that the materials representing factors that couple are "near together in a linear series" in the chromosomes; (2) that, when pairs of parental chromosomes conjugate, "like regions stand opposed "; (3) that "homologous chromosomes twist around each other," but that the separation of chromosomes is in a single "plane"; (4) that, thereby the …


Bulletin No. 112 - A Report Of Seven Years' Investigation Of Dry Farming Methods, Lewis A. Merrill Dec 1910

Bulletin No. 112 - A Report Of Seven Years' Investigation Of Dry Farming Methods, Lewis A. Merrill

UAES Bulletins

The permanent settlement of Utah was made possible because of the introduction of irrigation methods but the growing of crops without irrigation was successfully practiced soon after the settlement of the territory. From the existing records and from the words of many of the veterans still living it is evident that many attempts were made to grow wheat in the early 50's without irrigation. Most of these attempts failed, because they were made on irrigated lands. In 1865, however, an experiment on a much more extended scale was made.


The Inheritance Of Sizes And Shapes In Plants, R. A. Emerson Jan 1910

The Inheritance Of Sizes And Shapes In Plants, R. A. Emerson

Department of Agronomy and Horticulture: Faculty Publications

Some years ago Lock reported a cross of a tall race of maize with a shorter race which produced an intermediate height in F1 and exhibited no segregation in F2 when crossed back with one of the parents. Castle's results with rabbits are very similar to those of Lock with maize. Castle summarizes his results in part as follows:

A cross between rabbits differing in ear-length produces offspring with ears of intermediate length, varying about the mean of the parental ear-lengths. . . . A study of the offspring of the primary cross-breds shows the blend of the …


Bulletin No. 101 - Feeding Experiments With Cattle, Sheep, Swine And Horses, R. W. Clark Dec 1906

Bulletin No. 101 - Feeding Experiments With Cattle, Sheep, Swine And Horses, R. W. Clark

UAES Bulletins

Since the establishment of sugar factories in this State, considerable inquiry has arisen regarding the food value of sugar beets and the by-products of the factories. The last publication from this station on the subject was Bulletin No. 90 which gave the results of feeding sugar beet pulp and molasses in various combinations to sheep and steers. Previous to the appearing of this publication some experimental work had been carried out in feeding sugar beets to swine and sugar beet pulp and beet molasses to sheep. The results secured seemed to warrant further work in the same direction and in …


Bulletin No. 100 - Arid Farming Investigations, W. M. Jardine Dec 1906

Bulletin No. 100 - Arid Farming Investigations, W. M. Jardine

UAES Bulletins

The Utah Legislature of 1903 passed a bill providing for the investigation by the Experiment Station of dry-land farming problems in the State of Utah, and appropriating $12,500 to be expended in carrying on this work during the two years, 1903 and 1904. Six experimental dry farms were located one in each of the following counties: Iron, Juab, San Juan, Sevier, Tooele and Washington. A second appropriation of $15,500 was made by the Legislature of 1905, for the purpose of continuing, the investigations.


Circular No. 4 - Memoranda Of Plans Of Irrigation Investigations Apr 1905

Circular No. 4 - Memoranda Of Plans Of Irrigation Investigations

UAES Circulars

The present series of irrigation investigations was begun in 1901, and has been continued since then. Since January 1st, 1904, the investigations have been carried on in co-operation with the Irrigation Investigations (Chief, Professor Elwood Mead) of the Office of Experiment Stations, U.S. Department of Agriculture.


Circular No. 2 - Memoranda Of Plans Of Irrigation Investigations Apr 1904

Circular No. 2 - Memoranda Of Plans Of Irrigation Investigations

UAES Circulars

The present series of irrigation investigations was begun in 1901, and has been continued since then. Since January 1st, 1904, the investigations have been carried on in co-operation with the Irrigation Investigations (Chief Professor Elwood Mead) of the Office of Experiment Station, U.S. Department of Agriculture.


Circular No. 1 - Memoranda Of Plans For Arid Farm Investigations Apr 1904

Circular No. 1 - Memoranda Of Plans For Arid Farm Investigations

UAES Circulars

The Legislature of 1903 made an appropriation for the purpose of conducting experiments on the possibility of growing useful crops without irrigation in various parts of the State of Utah. The work was placed under the direction of the Utah Experiment Station. Six farms have been located under this act, and cultural and other work has been begun. This circular which contains the plans of the proposed investigations has been prepared for the convenience of those employed in the investigations.


Bulletin No. 79 - Process Butter: A Dairy Fraud, R. W. Clark, John A. Crockett Jan 1903

Bulletin No. 79 - Process Butter: A Dairy Fraud, R. W. Clark, John A. Crockett

UAES Bulletins

A fraud which threatens to work great injury to the dairy interests of Utah, has made its appearance. It is a churning process by which the yield of butter can be abnormally increased by incorporating a large quantity of water and casein. A report has reached the Experiment Station to the effect that the promoters of this churning process are successfully enlisting the interest of Utah farmers and are selling county rights at fabulous prices.

This bulletin is issued only as a word of warning to those who would be entrapped. It is not probable that butter made according to …


Bulletin No. 78 - Experiments In Fattening Lambs, F. B. Linfield Sep 1902

Bulletin No. 78 - Experiments In Fattening Lambs, F. B. Linfield

UAES Bulletins

Sheep raising is among the most important agricultural industries of the state. Unlike the conditions in eastern states, the sheep industry of Utah is only indirectly associated with the farm. While the sheep owner generally lives on his farm, his sheep are kept on the public range and moved from place to place as feed and weather may make necessary. To be handled successfully on the range, sheep must be herded in large flocks. Under favorable conditions the expense account is comparatively light and returns substantial.


Bulletin No. 77 - Horse Feeding, Lewis A. Merrill Jun 1902

Bulletin No. 77 - Horse Feeding, Lewis A. Merrill

UAES Bulletins

Previous experiments reported by this Station have shown the value of lucern, the principal forage crop of this section, when fed to cattle, sheep and hogs. The main part of this bulletin is devoted to the value of lucern when fed to horses, though a brief review of the work previously done at this Station in connection with the subject of horse-feeding is included. There has been, and is, some prejudice existing against lucern forming a part or all of the ration of horses, not only in the East, where the value of this crop is not yet fully appreciated, …


Bulletin No. 76 - Forcing Lettuce, C. P. Close Mar 1902

Bulletin No. 76 - Forcing Lettuce, C. P. Close

UAES Bulletins

The winter growing of lettuce is not yet practiced in Utah. There is a good demand for lettuce in Salt Lake City, Ogden, and in some of the smaller towns during the winter, but this demand is supplied by the California grown product. It is yet to be determined whether or not lettuce can be grown profitably under glass in this State. The recent high prices of the winter product indicate that the forcing of a moderate amount of lettuce can be done with profit.

In the season of 1899-1900, the Experiment Station began a series of experiments with lettuce …


Bulletin No. 74 - Lead Ore In Sugar Beet Pulp, John A. Widtsoe, Lewis A. Merrill Jan 1902

Bulletin No. 74 - Lead Ore In Sugar Beet Pulp, John A. Widtsoe, Lewis A. Merrill

UAES Bulletins

The recent great development of the beet sugar industry in the State of Utah, has made the matter of utilizing the sugar beet pulp an important question for Utah farmers. That beet pulp has a high feeding value, when fed in proper combinations, has been shown conclusively since the establishment of the first beet sugar factory in the State, ten years ago. The experience of other states, and of the beet sugar producing countries of Europe, has likewise demonstrated that beet pulp may be used profitably in the feeding of farm animals. It is doubtlessly true that much is yet …


Bulletin No. 75 - Arid Farming Or Dry Farming, John A. Widtsoe, Lewis A. Merrill Jan 1902

Bulletin No. 75 - Arid Farming Or Dry Farming, John A. Widtsoe, Lewis A. Merrill

UAES Bulletins

There are in Utah many lands that will not, for many years to come, be brought under irrigation; and there are many others that probably will never be irrigated. These are usually high-lying lands, often far from large streams, to irrigate which, would require the construction of exceptionally costly reservoirs, dams, and canals. Many Utah valleys are so far removed from the water supply of the State that it is improbable that water will be carried past other thirsting lands to these outlying places. The building of irrigation works is a venture in which profits and losses are considered; and …


Bulletin No. 73 - Experiments In Butter-Making And Cheese-Making, F. B. Linfield Aug 1901

Bulletin No. 73 - Experiments In Butter-Making And Cheese-Making, F. B. Linfield

UAES Bulletins

No bulletins have heretofore been issued by the Dairy department of this Station on the special question of the manufacture of dairy products. The main work of the Dairy department has been with the farm end of the dairy problem; viz: the production of milk. This includes the breeding, feeding and management of cows, the raising and developing of the young stock, and the economic disposal of the by-products of the dairy. From information gathered during my first year at the College it was apparent that this foundation work should have first attention. At this time but six to eight …


Power For Agricultural Purposes, Charles Andrew Brayton Jan 1901

Power For Agricultural Purposes, Charles Andrew Brayton

Student and Lippitt Prize essays

A review of the advancements by farmers upon implementation of scientific methods to create more efficient and progressive farm work.


Bulletin No. 72 - A Soil Survey In Salt Lake Valley, Utah, Frank D. Gardner, John Stewart Oct 1900

Bulletin No. 72 - A Soil Survey In Salt Lake Valley, Utah, Frank D. Gardner, John Stewart

UAES Bulletins

Beginning in July, 1899, four months were spent in a thorough and detailed study of that portion of the Salt Lake Valley lying west of the Jordan River, the object being to map the soils with reference to their character and to the extent of, and damage from, "alkali" and seepage waters. The soils were classified according to their texture, and the waters examined with reference to their quality for irrigation purposes. The soils were further studied with reference to their "alkali" content and its effect in varying amounts upon the crops and vegetation. The methods of irrigation were looked …


Bulletin No. 71 - Carrying Capacities Of Irrigation Canals, Samuel Fortier Jul 1900

Bulletin No. 71 - Carrying Capacities Of Irrigation Canals, Samuel Fortier

UAES Bulletins

During the summer of 1897 the writer was enabled to make, with the help of his assistants, T. H. Humpherys, A. P. Stover, and W. D. Beers, a number of experiments on the carrying capacities of irrigation ditches and canals. The funds necessary to carry on these investigations were provided by the U. S. Geological Survey and the Agricultural Experiment Station of Utah. Shortly after the field work was completed the writer resigned his position with the College to accept that of chief engineer and superintendent of the Ogden Water Works and the Bear River Canal System, and his time …


Bulletin No. 70 - Experiments In Pork Production, Luther Foster, Lewis A. Merrill Jun 1900

Bulletin No. 70 - Experiments In Pork Production, Luther Foster, Lewis A. Merrill

UAES Bulletins

Pig raising in Utah has not as a rule been considered a profitable branch of the live stock industry, especially as usually practiced on the farm, and up to within the past few years the growing of more pork than was used at home was the exception, but since creameries and cheese factories have come into existence, creating a large by-product of skim milk and whey, cheap and valuable. pig foods, when properly used, the business has made a healthy growth.


The Strawberry, George Washington Barber Jan 1898

The Strawberry, George Washington Barber

Student and Lippitt Prize essays

An instruction on the most effective procedures for growing, cultivating and enjoying the strawberry plant.


Observations Of The Adaptation Of The Leaves Of Kalmia Latifolia To Environment, Grace Ellen Wilson Jan 1898

Observations Of The Adaptation Of The Leaves Of Kalmia Latifolia To Environment, Grace Ellen Wilson

Student and Lippitt Prize essays

Samples taken from the plant for observation are from two different locations (high dry land with full sun/low moisture and a swamp) and show that the leaves of the plant flourish more in sunlight than in dark, swamp areas.