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Articles 14641 - 14670 of 14776
Full-Text Articles in Life Sciences
Bulletin 111 - Standard Wheat Varieties For The W. A. Wheat Belt, Geo L. Sutton, F. Vanzetti
Bulletin 111 - Standard Wheat Varieties For The W. A. Wheat Belt, Geo L. Sutton, F. Vanzetti
Bulletins 1 - 2999
Graded selected Pedigree seed is produced at the Chapman and Merredin Experiment Farms.
Bulletin 105 - Pedigree Selection Of Seed At The Chapman And Merredin Experiment Farms, Geo L. Sutton
Bulletin 105 - Pedigree Selection Of Seed At The Chapman And Merredin Experiment Farms, Geo L. Sutton
Bulletins 1 - 2999
A Paper read before the Royal Society of the Royal Society of Western Australia, 12th October,1921.
"Pedigree" or "Pure Line" selection is that system of selection under which the choice is made, not. solely because of the attractive appearance of the plant, but because of its ability to transmit its good qualities to the progeny. Such a system requires, and the method of selection ensures, that the qualities sought after shall be hereditary. For this purpose a record of ancestry is essential, hence the use of the term "pedigree."
Pericarp Studies In Maize. I. The Inheritance Of Pericarp Colors, E. G. Anderson, R. A. Emerson
Pericarp Studies In Maize. I. The Inheritance Of Pericarp Colors, E. G. Anderson, R. A. Emerson
Department of Agronomy and Horticulture: Faculty Publications
Introduction ... 466
Nomenclature ... 467
Pigments present in colored pericarp ... 467
Factor relations of pericarp colors ... 468
Factor relations of red pericarp, P ... 468
Factor relations of cherry pericarp ... 471
Discussion and Summary ... 474
Literature Cited ... 475
Bulletin No. 183 - Water-Holding Capacity Of Irrigated Soils, Orson W. Israelsen, Frank L. West
Bulletin No. 183 - Water-Holding Capacity Of Irrigated Soils, Orson W. Israelsen, Frank L. West
UAES Bulletins
All information that will 'enable the irrigator to use water economically is valuable to arid-climate agriculture. In many arid-climate regions, including the western part of the United States, excessive waste of water occurs in the irrigation of highland porous soil areas, as a result of lack of information concerning the capacity of the soil to hold water. Following the waste of water on the uplands by excessive percolation through open soils, vast lowland areas are rendered partially or wholly nonproductive by water-logging. To illustrate, a gravelly bench soil four feet deep, if underlain by a coarse open gravel to a …
Bulletin No. 178 - The Irrigation Of Barley, F. S. Harris, D. W. Pittman
Bulletin No. 178 - The Irrigation Of Barley, F. S. Harris, D. W. Pittman
UAES Bulletins
The proper use of irrigation water is one of the most important problems of every comnunity and of every farmer in an irrigated district. The irrigation farmer has largely under his control one of the most important factors in determining the yield and quality of his crops and one over which all other farmers have little control at all. On the other hand, in an arid district there is generally less available irrigation water than is needed to give the optimum amount to all the land, or if one region receives an excess there is generally an accumulation of alkali …
Circular No. 47 - Celery Culture For Utah, T. H. Abell
Circular No. 47 - Celery Culture For Utah, T. H. Abell
UAES Circulars
At one time practically all the celery consumed in Utah was shipped from California and eastern states. It was soon discovered, however, that celery could be raised in Utah, and as the population increased more and more acres were utilized in the production of this crop. Very little found its way to the outside markets, but what little did get out was well received because of its very high quality. Men who travel say that "Utah Celery" on the menu on trains and in hotels means the best there is in celery.
Within recent years several carloads have been shipped …
Bulletin No. 181 - Duty-Of-Water Investigations On Coal Creek, Utah, Arthur Fife
Bulletin No. 181 - Duty-Of-Water Investigations On Coal Creek, Utah, Arthur Fife
UAES Bulletins
Coal Creek flows from the west slope of the part of the Wasatch Mountain range which is located in the southeast part of Iron County, Utah. Its drainage area is almost 100 square miles.
Seasonal and daily stream-flow fluctuations are very pronounced. During the high water of spring the flow has reached more than 600 second-feet. At the time of high water, the daily fluctuations are the greatest. During the low water season in July and August, the flow has dropped as low as 12 second-feet since 1917, when accurate records were first kept; and, from the accounts of early …
Bulletin No. 182 - The Net Duty Of Water In Sevier Valley, Orson W. Israelsen, Luther M. Winsor
Bulletin No. 182 - The Net Duty Of Water In Sevier Valley, Orson W. Israelsen, Luther M. Winsor
UAES Bulletins
The Sevier River is one of the most important sources of irrigation water in Utah. It rises in two main branches. The south fork rises in Kane County and flows almost due north to Junction in Piute County, where it joins the east fork, which rises partly in Garfield County and partly in Sevier County. The Garfield County branch of the east fork flows north, and the Sevier County Branch flows south to Coyote where the two tributaries join and flow westward into Junction. From Junction, the river flows northward past Marysvale, Sevier, Richfield, Salina, Gunnison, and Mills, where it …
The Flat-Headed Apple-Tree Borer, Fred E. Brooks
The Flat-Headed Apple-Tree Borer, Fred E. Brooks
United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications
The flat-headed apple-tree borer, a serious orchard pest throughout the greater part of United States, is found from the Atlantic to Pacific and from Florida and Texas to Canada.
The larva, or grub, of this insect (which in the adult stage is a medium-sized beetle) bores in the bark and wood of a great variety of trees, but is best known as an enemy of apple, pear, peach, and other cultivated fruit trees. Its depredations are felt in almost every locality where orchards have been planted.
Fortunately, this borer almost invariably confines its attacks to the sunny sides of trees …
Genetic Interrelations Of Two Andromonoecious Types Of Maize, Dwarf And Anther Ear, R. A. Emerson, Sterling H. Emerson
Genetic Interrelations Of Two Andromonoecious Types Of Maize, Dwarf And Anther Ear, R. A. Emerson, Sterling H. Emerson
Department of Agronomy and Horticulture: Faculty Publications
Attention was called by Montgomery (1906)to the occasional appearance
of perfect flowers in the staminate inflorescence of maize and similar
cases were reported by Kempton (1913). Montgomery (1911) described
with illustrations a true-breeding type of semi-dwarf dent maize, the ears
of which were perfect-flowered. Perfect-flowered maize was described
and illustrated also by Blaringhem (1908, pp. 180-183). East and
Hayes (1911, pp. 13, 14) noted and illustrated a perfect-flowered sweet
corn. Weatherwax (1916, 1917) showed that typically pistillate
flowers of maize exhibit in microscopic sections the rudiments of stamens
and that staminate flowers show rudiments of pistils.
Circular No. 46 - Thirty Years Of Agricultural Experiments In Utah, F. S. Harris, N. I. Butt
Circular No. 46 - Thirty Years Of Agricultural Experiments In Utah, F. S. Harris, N. I. Butt
UAES Circulars
The Utah Agricultural Experiment Station has been established over thirty years. During this time more than a hundred experimenters have worked on the staff, each one contributing something to aid in the researches that have been conducted. During the first few years regular annual reports were published, but during recent years no such reports have been issued. The results of the work of the Station have been published in station bulletins and circulars and in various technical journals.
Since there is no publication or series of publications that records all the activities of the Station it was thought desirable at …
Circular No. 45 - Alfalfa Production Under Irrigation, George Stewart
Circular No. 45 - Alfalfa Production Under Irrigation, George Stewart
UAES Circulars
Alfalfa was first planted and cared for by half-civilized man long before any history was written. In spite of the fact that its line of descent has come thru the Medes and Persians by way of the Greeks, the Romans, the Moslems, and the Spaniards,--in spite of long sojourns in many lands, the heritage is still undefiled. Instead of losing in adaptability, possibly long centuries of trial have made it more fit. At any rate, here it is: high in power to yield, rich in power to nourish.
With its deep roots it laughs at drought and mellows up the …
Circular No. 44 - The Agriculture Of Utah, F. S. Harris
Circular No. 44 - The Agriculture Of Utah, F. S. Harris
UAES Circulars
Agriculture is so intimately related to all other industries that anything which affects the farmer reflects itself in all branches of business. The banker, the merchant, and the manufacturer must keep in touch with crop and livestock conditions of the country in order to foresee the tendencies of their own businesses. This is particularly true in a state like Utah which depends fundamentally on the products of the soil for its prosperity.
Numerous requests are received by the Experiment Station from prospective settlers living out side of the state for information concerning the agriculture of Utah. These have been kept …
Bulletin No. 180 - The Irrigation Of Alfalfa, F. S. Harris, D. W. Pittman
Bulletin No. 180 - The Irrigation Of Alfalfa, F. S. Harris, D. W. Pittman
UAES Bulletins
In the United States alfalfa-growing has gone hand in hand with the development of irrigation. Alfalfa did not become an important crop in the country until after irrigation began to be practised in the West. Very soon after the pioneers reached Utah, alfalfa was brought to the state where it found conditions well suited to its growth. Wherever settlement extended alfalfa was raised as one of the most important crops, and finally from the West it has spread eastward into the humid parts of the country.
Bulletin No. 179 - Apple Candy: A Commercial Use For Cull Apples, T. H. Abell
Bulletin No. 179 - Apple Candy: A Commercial Use For Cull Apples, T. H. Abell
UAES Bulletins
Utah annually produces many tons of apples that never reach the consumer. These apples remain on the farm for various rwasons: (1) because there are not adequate marketing facilities, (2) because the fruit is of inferior quality, (3) because orchard units are too small for buyers to consider, and (4) because home orchards are so large that the crop cannot be utilized. On the other hand, apples of inferior quality go to the market alongside apples of high quality. The result is a lowering of the price of apples in general and dissatisfaction on the part of the retailer and …
The Apple-Tree Tent Caterpillar, A. L. Quaintance
The Apple-Tree Tent Caterpillar, A. L. Quaintance
United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications
The Apple-Tree Tent Caterpillar makes the unsightly nests or tents to be seen in the spring in trees along roadways, fences, and streams, and' in orchards. It varies greatly in abundance from year to year or over longer periods. Wild cherry is the favorite food plant, but many other plants are attacked, including several orchard fruits, especially the apple. During years when caterpillars are abundant the trees may be so completely stripped of their foliage that larvae are forced to hunt other food plants and hence are to be seen in numbers crawling over the ground and fences and elsewhere. …
The Relative Frequency Of Crossing Over In Microspore And In Megaspore Development In Maize, R. A. Emerson, C. B. Hutchison
The Relative Frequency Of Crossing Over In Microspore And In Megaspore Development In Maize, R. A. Emerson, C. B. Hutchison
Department of Agronomy and Horticulture: Faculty Publications
One of the early developments in the study of linkage in Drosophila was the discovery that the phenomenon of crossing over is confined to the female sex (Morgan 1912). The fact that no crossing over occurs in the male Drosophila holds true not only for sex-linked genes but for factors in the autosomes as well and is so well established that it affords a most convenient method of determining to which of the different linkage groups a new factor belongs.
The same phenomenon, but with the sexes reversed, obtains in the silkworm moth. Tanaka (1914, 1915) has found from back-cross …
Heritable Characters Of Maize: Ix. Crinkly Leaf, R. A. Emerson
Heritable Characters Of Maize: Ix. Crinkly Leaf, R. A. Emerson
Department of Agronomy and Horticulture: Faculty Publications
In 1910 a strain of dent corn obtained at the National Corn Exposition held at Omaha was crossed with a strain of flint corn obtained from the Department of Agronomy of the University of Nebraska. The F1 plants of this cross were normal and no abnormalities had been observed in the parent strains. But since the latter had not been subjected to self-pollination, there is no assurance that one or other of them did not have in it the character to be described here. In the F2 generation of this cross there occurred a tpe of plant that …
Bulletin No. 177 - Some Types Of Irrigation Farming In Utah, E. B. Brossard
Bulletin No. 177 - Some Types Of Irrigation Farming In Utah, E. B. Brossard
UAES Bulletins
As ordinarily used "type of farming" suggests general contrasts in the nature of farm business. The bases used in making these contrasts are: (1) sources of farm income, (2) number of farm enterprises, (3) amount of labor, capital, and management applied to each acre of land, and (4) farm practice with reference to maintenance of soil fertility. When based on sources of farm income, farms are classified as grain farms, hay farms, fruit farms, dairy farms, etc., according to the proportionate magnitude of the income from the different sources. When the number of farm enterprises is used as the basis, …
Bulletin No. 176 - Potato Improvement By Hill Selection, George Stewart
Bulletin No. 176 - Potato Improvement By Hill Selection, George Stewart
UAES Bulletins
Potatoes are such an important food and are grown on so many farms in Utah that any method of permanently improving the crop is highly desirable. Commercial producers can of course capitalize any practical method of potato improvement.
This field of experimentation is not new, for many workers have attempted to improve the potato crop by selection. Success, however, has been neither uniform nor always appreciable; many of the experiments were of short duration, and many were not conducted on a sufficiently large scale to be good tests. It is apparent from this meager statement that the possibilities" of potato …
Circular No. 43 - Feeding Work Horses, W. E. Carroll
Circular No. 43 - Feeding Work Horses, W. E. Carroll
UAES Circulars
The intelligent feeding of the work horses of the State of Utah would save each year thousands of dollars in feed and prevent sickness and death of hundreds of horses.
In Circular 32 of this station a brief discussion is given of some of the more theoretical aspects of the feeding of farm animals as they might apply in general to all classes of livestock. Consideration is given to such questions as the composition and digestibility of feeds, the uses to which the digested portions are put in the animal body, the calculation and balancing of rations, how to judge …
Bulletin No. 175 - Sixteen Years Of Dry Farm Experiments In Utah, F. S. Harris, A. F. Bracken, I. J. Jensen
Bulletin No. 175 - Sixteen Years Of Dry Farm Experiments In Utah, F. S. Harris, A. F. Bracken, I. J. Jensen
UAES Bulletins
The demand for reliable information on dry-farming is increasing every year. As the area that is being cropped by dry-farm methods extends to less favorable regions, it becomes necessary to utilize the most effective methods of culture. In choice dry-farm sections crops may be produced without special care; but when an attempt is made to farm where the rainfall is low or where other conditions are not favorable, it becomes necessary to use every possible means of moisture conservation in order to get satisfactory yields.
Since the demand for information is so insistent, it seems desirable at this time to …
Bulletin No. 174 - A Variety Survey And Descriptive Key Of Small Grains In Utah, George Stewart
Bulletin No. 174 - A Variety Survey And Descriptive Key Of Small Grains In Utah, George Stewart
UAES Bulletins
Standardization of the varieties of small-grains in Utah is highly important. A mixed condition of grain causes both direct loss and inconvenience. The loss comes about in two principal ways: (1) by the decreased yields resulting from mixed grain, and (2) by the lower price paid for each bushel of mixed grain. This latter loss is especially noticeable in wheat on account of the grading system which penalizes mixed wheat by reducing the grade or by barring it from one of the six market classes and designating it as "mixed" wheat. The inconvenience arises from the fact that some varieties …
Bulletin No. 172 - The Value Of Barnyard Manure On Utah Soils, F. S. Harris
Bulletin No. 172 - The Value Of Barnyard Manure On Utah Soils, F. S. Harris
UAES Bulletins
New countries rarely appreciate the value of barnyard manure. It is not until the soil begins to be depleted of its fertility and the yield of crops begins to decline that manure is given the attention that its value justifies. In new countries it is not uncommon to see manure hauled into a rut in the road or left in scattered heaps along the roadside or the ditch bank. Often a year's accumulation of manure is drawn out of the barn or corral in scrapers and added to a pile containing the accumulation of previous years.
Bulletin No. 173 - The Duty Of Water In Cache Valley, Utah, F. S. Harris
Bulletin No. 173 - The Duty Of Water In Cache Valley, Utah, F. S. Harris
UAES Bulletins
The greater part of this bulletin is devoted to a report of experiments on the relation of the amount of irrigation water applied to the yield of crops. As the agriculture of Utah develops, it becomes more obvious each year that the chief factors limiting the production of crops is irrigation water. It is desirable, therefore, to have available all possible information on the subject. Water is so scarce that none should be wasted either directly or by attempting to spread it over so much land that it is not economically applied. Wasteful extravagance on the one hand and undue …
Bulletin No. 171 - Alfalfa Seed Growing And The Weather: With Particular Reference To Conditions In Utah, J. Cecil Alter
Bulletin No. 171 - Alfalfa Seed Growing And The Weather: With Particular Reference To Conditions In Utah, J. Cecil Alter
UAES Bulletins
The demand for alfalfa seed has far outrun domestic production. Since the labor and expense of producing the crop are light, and the profits attractive in favorable years, a desire is manifest wherever alfalfa is grown, to save a crop for seed whenever the meteorological elements favor its setting and maturing. Climate is generally acknowledged to be the limiting factor in alfalfa seed production, and the current weather the major factor affecting the yearly yields.
Circular No. 41 - Soil Alkali, F. S. Harris
Circular No. 41 - Soil Alkali, F. S. Harris
UAES Circulars
The farmer of the West is likely to be very much upset at the mention of alkali, mineral, or salt, in connection with his land. These various names are applied to a condition which he usually knows little about except that it is bad. The exact nature of the substances called by these names and the character of the injuy caused by them are very vague in his mind; but he knows that he wants nothing to do with alkali if he can help it.
The prevalence of alkali throughout the arid parts of the world makes it impossible for …
Bulletin No 81 - The Improvement Of Pastures With Notes On The Pasture Trefoils In Western Australia, E. A. Mann, D. A. Herbert
Bulletin No 81 - The Improvement Of Pastures With Notes On The Pasture Trefoils In Western Australia, E. A. Mann, D. A. Herbert
Bulletins 1 - 2999
Agriculture can be roughly divided for practical purposes into two large divisions, those of animal husbandry and vegetable husbandry. It is with the former that this pamphlet is chiefly concerned and its object is to contribute, it possible, in some small measure towards the problem of how to increase time stock carrying capacity of our natural pasture lands. it is unnecessary to dwell upon the importance of this question, especially in relation to the remarkable developments which are taking place in time wool-growing industry in the Southern and more coastal areas of Western Australia.
Heritable Characters Of Maize Ii.-Pistillate Flowered Maize Plants, R. A. Emerson
Heritable Characters Of Maize Ii.-Pistillate Flowered Maize Plants, R. A. Emerson
Department of Agronomy and Horticulture: Faculty Publications
In the "freak"
class at the Annual
Corn Show held at Lincoln, Nebraska,
in the winter of 1913-14,
there was exhibited a corn tassel
with a heavy setting of seeds. A few
seeds are not infrequently found in the
staminate inflorescence of maize, particularly
in pod com, and tillers of various
corn varieties often end in ears instead
of in tassels or have tassels, the central
spikes of which are ear like. The freak
exhibited at the com show, however,
was a large. much branched affair.
wholly tassel-like in form except for the
fact that it bore a heavy crop …
Bulletin No. 170 - A Study Of Methods Of Determining Soil Alkali, D. W. Pittman
Bulletin No. 170 - A Study Of Methods Of Determining Soil Alkali, D. W. Pittman
UAES Bulletins
There is a great lack of uniformity in the methods of testing soils for alkali salts and in the forms of expressing the results in a way that will show the relative toxicity of the salts. This has been pointed out by numerous investigators and has been shown to complicate the determinations so much that the results of different investigators are hardly comparable. It is of further disadvantage in that the toxic limits of an alkali as worked out by one system of analysis are often difficultly applicable to a soil that has been tested by another system. However, it …