Open Access. Powered by Scholars. Published by Universities.®
- Institution
-
- University of Kentucky (10299)
- University of Nebraska - Lincoln (2687)
- Department of Primary Industries and Regional Development, Western Australia (1600)
- Utah State University (768)
- University of Arkansas, Fayetteville (600)
-
- South Dakota State University (312)
- TÜBİTAK (228)
- Western Kentucky University (201)
- Brigham Young University (148)
- Universitas Padjadjaran (142)
- Louisiana State University (137)
- International Centre of Insect Physiology and Ecology (132)
- University of Nevada, Las Vegas (125)
- University of Dar es Salaam (121)
- California Polytechnic State University, San Luis Obispo (112)
- University of Texas Rio Grande Valley (108)
- Michigan Technological University (98)
- Tennessee State University (98)
- Clemson University (96)
- Claremont Colleges (94)
- Portland State University (93)
- Old Dominion University (86)
- Purdue University (77)
- Eastern Illinois University (66)
- Chapman University (65)
- SIT Graduate Institute/SIT Study Abroad (62)
- Edith Cowan University (52)
- University of the Philippines Los Baños (51)
- Stephen F. Austin State University (45)
- Technological University Dublin (42)
- Keyword
-
- Western Australia (1086)
- Grains and field crops (693)
- Grazing (421)
- Nitrogen (292)
- Climate change (252)
-
- Alfalfa (231)
- Yield (206)
- Biosecurity, pests, weeds and diseases (193)
- Sheep (191)
- Biodiversity (188)
- Forage (183)
- Grassland (182)
- Pasture (178)
- Cattle (170)
- Phosphorus (157)
- Digestibility (148)
- Soil (148)
- Wheat (144)
- Silage (141)
- Forage quality (140)
- Sustainability (139)
- Management (136)
- Drought (132)
- Horticulture (131)
- Nutritive value (127)
- Germination (126)
- Legumes (125)
- Maize (125)
- Soybean (125)
- Stocking rate (120)
- Publication Year
- Publication
-
- IGC Proceedings (1977-2023) (9261)
- Experimental Summaries - Plant Research (728)
- Department of Agronomy and Horticulture: Faculty Publications (517)
- The Prairie Naturalist (480)
- NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County (390)
-
- Kentucky Alfalfa and Stored Forage Conference (383)
- United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications (315)
- Graduate Theses and Dissertations (277)
- Journal of the Department of Agriculture, Western Australia, Series 4 (268)
- All Graduate Theses and Dissertations, Spring 1920 to Summer 2023 (260)
- Turkish Journal of Botany (228)
- Electronic Theses and Dissertations (222)
- Theses and Dissertations (180)
- Kentucky Grazing Conference (176)
- Department of Agronomy and Horticulture: Dissertations, Theses, and Student Research (143)
- Jurnal Kultivasi (142)
- Mammoth Cave Research Symposia (133)
- All Peer-Reviewed Publications (132)
- Department of Plant Pathology: Faculty Publications (123)
- UAES Bulletins (118)
- Plant and Soil Sciences Faculty Publications (117)
- Tanzania Journal of Science (116)
- Bulletins 4000 - (114)
- Crop, Soil and Environmental Sciences Faculty Publications and Presentations (84)
- Agricultural and Environmental Sciences Faculty Research (77)
- Aliso: A Journal of Systematic and Floristic Botany (76)
- Center for Plant Science Innovation: Faculty Publications (75)
- LSU Master's Theses (70)
- Theses and Dissertations--Plant and Soil Sciences (70)
- Masters Theses (69)
- Publication Type
- File Type
Articles 20011 - 20040 of 20234
Full-Text Articles in Entire DC Network
Bulletin No. 350 - Cemeteries Of Box Elder And Summit Counties, Joseph A. Geddes, Carmen Fredrickson
Bulletin No. 350 - Cemeteries Of Box Elder And Summit Counties, Joseph A. Geddes, Carmen Fredrickson
UAES Bulletins
One of man's greatest challenges is to build institutions that adequately meet basic needs. A cemetery is a social institution invented to take care of needs related to the dead.
Times and conditions change. A design which seemed adequate when initiated may soon become archaic and out-moded if it is not modified in the light of new discoveries.
This study raises many issues about cemeteries. As one reads the bulletin many questions concerning the nature and function of other institutions arise. What is their condition in contrast with the cemeteries?
This publication, the first in an institution series planned by …
The Effects Of Thermal-Neutron Irradiation Of Maize And Barley Kernels, John W. Schmidt, E. F. Frolik
The Effects Of Thermal-Neutron Irradiation Of Maize And Barley Kernels, John W. Schmidt, E. F. Frolik
Nebraska Agricultural Experiment Station: Historical Research Bulletins
It is the purpose of this paper to report the effects of thermal-neutron irradiation of maize and barley kernels on subsequent germination, plant establishment, and early plant development. Comparisons are made with equivalent neutron treatments of maize pollen, results of which have been reported in part in previous publications.
The Sedimentation Rate Of Potato Yellow-Dwarf Virus, M. K. Brakke, L. M. Black, Ralph W. G. Wyckoff
The Sedimentation Rate Of Potato Yellow-Dwarf Virus, M. K. Brakke, L. M. Black, Ralph W. G. Wyckoff
Department of Plant Pathology: Faculty Publications
BLACK et al. (1948) have published electron micrographs of bodies believed to represent the New York variety of potato yellow-dwarf virus (Aureogenus vastans (H) Black) (Holmes 1948). The photographs showed bodies in several different extracts of infected plants of Nicotiana rustica L., but not in corresponding preparations from healthy plants. Similar bodies were found in concentrates from plants infected with the New Jersey variety of the virus (var. agalliae Black). These bodies were larger than, and of a different character from, those of plant viruses hitherto examined in the electron microscope. The present study was undertaken to obtain evidence …
Bulletin No. 344 - The Nutritive Value Of Range Forage As Affected By Vegetation Type, Site, And State Of Maturity, C. Wayne Cook, Lorin E. Harris
Bulletin No. 344 - The Nutritive Value Of Range Forage As Affected By Vegetation Type, Site, And State Of Maturity, C. Wayne Cook, Lorin E. Harris
UAES Bulletins
Native ranges of Utah are extremely heterogeneous. Pronounced variations exist in soil, seasonal rainfall, temperatures, and altitude on most grazing areas. Rough topography and micro-climates on even individual grazing allotments present variable vegetation types and site conditions. Such variations account for the comparatively large number of species and variable nutritive content found in range forage.
The Influence Of Crop Plants On Those Which Follow V, Theodore Eugene Odland, Robert Smith Bell, John B. Smith
The Influence Of Crop Plants On Those Which Follow V, Theodore Eugene Odland, Robert Smith Bell, John B. Smith
Special Collections (Miscellaneous)
This is a study of the effect which crop plants have on the growth and yields of those crops which follow. The study began in 1907; this bulletin reports the results from 1930 to 1942. Millet, mangels and rutabagas generally seem to be harmful to crops which follow them. Carrots, mangels and millet were least favorable of all crops to mangels. Potatoes did poorest when following potatoes, rutabagas, or millet. Rutabagas yielded low following rutabagas, mangels and millet. Onions were unfavorably affect by preceding crops of mangels, cabbage, or rutabagas. There is no simple explanation for the effect of crops …
Bulletin No. 339 - Consumer Demand For Peaches Of Varying Stages Of Maturity
Bulletin No. 339 - Consumer Demand For Peaches Of Varying Stages Of Maturity
UAES Bulletins
Studies of consumer demand for peaches of varying maturities were conducted in Kansas City, Oklahoma City, Minneapolis, and Milwaukee during the 1949 peach marketing season. In these tests standard Elberta peaches from Colorado and Utah were used primarily but occasionally when they were not available Elbertas from Idaho and Michigan were used. No Early Elbertas were used.
This study is designed to promote the orderly marketing of peaches and to expand their consumption, that returns to growers may be maintained or increased. The study is primarily concerned with consumer demand for degree of maturity of Colorado and Utah Elberta peaches. …
Inheritance Of Certain Characters And The Linkage Relationships Of Factors On Chromosome Iv In Barley, Claude J. Jenkins
Inheritance Of Certain Characters And The Linkage Relationships Of Factors On Chromosome Iv In Barley, Claude J. Jenkins
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Plant breeding and the development of new or better varieties of plants are essential parts of modern agronomy, horticulture and forestry. The basis for such improvement is a knowledge of the factors and principles of genetics.
A number of genetic studies have been made with barley in recent years. This is partly because of the commercial importance of the crop, and partly because of the many distinct heritable characters of barley plants. The cultivated species of barley offers the plant breeder and geneticist a wealth of material for genetic studies. Varieties differ in a great many readily distinguishable characters, species …
An Etiological And Host Range Study Of Celery Mosaic In Utah, Dennis H. Hall
An Etiological And Host Range Study Of Celery Mosaic In Utah, Dennis H. Hall
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Celery mosaic is a virus disease of major economic importance in Utah. In years of severe epiphytotics, it has been a limiting factor in celery production. In 1947 losses due to this disease were estimated to exceed 8 per cent of the total crop. This estimate does not include losses resulting from reduction in grade or from plants discarded in the packing sheds. The celery acreage in Utah dropped from a high of 950 acres in 1946 to 750 acres in 1947 and dropped again in 1948 to 420 acres. Leaders in the industry attributed this reduction in acreage, in …
Microorganisms And Soil Structure, T. M. Mccalla
Microorganisms And Soil Structure, T. M. Mccalla
Department of Agronomy and Horticulture: Faculty Publications
SUMMARY
Laboratory tests were made to determine the effectiveness of different compounds and microbial groups in increasing the stability of Peorian loess lumps against the action of falling water drops. The influence of these on percolation tests in the laboratory was also determined.
Many organic substances-dextrose, sucrose, starch, peptone, cullulose, and gum arabic-did not themselves contribute directly to soil-structure stability, though these substances do furnish energy material for soil microorganisms, which can convert them readily into either microbial tissue or decomposition products that increase soil-structure stability. Lignin, proteins, oils, fats, waxes, resin, and paraffin increased the stability of lumps of …
Bulletin No. 345 - Effectiveness Of Gravity Drains And Experimental Pumping For Drainage Delta Area, Utah, O. W. Israelsen, D. F. Peterson Jr., R. C. Reeve
Bulletin No. 345 - Effectiveness Of Gravity Drains And Experimental Pumping For Drainage Delta Area, Utah, O. W. Israelsen, D. F. Peterson Jr., R. C. Reeve
UAES Bulletins
Cooperatie investigations on drainage and reclamation of salted soils in the Delta Area, Utah, were undertaken by the Utah Agricultural Experiment Station, the U. S. Regional Salinity Laboratory, and Millard County Drainage Districts under a memorandum of understanding effective January 1, 1946.
This investigation comprises project 250 of the Utah Agricultural Experiment Station, R. H. Walker, director; and project 50-46-1 of the U. S. Regional Salinity Laboratory, H. E. Hayward, director.
The objectives of the investigations covered by the memorandum of understanding were:
1. To study the effectiveness of present methods of drainage; tile and open drains.
2. To determine …
Bulletin No. 342 - The Nutritive Content Of The Grazing Sheep's Diet On Summer And Winter Ranges Of Utah, C. Wayne Cook, Lorin E. Harris
Bulletin No. 342 - The Nutritive Content Of The Grazing Sheep's Diet On Summer And Winter Ranges Of Utah, C. Wayne Cook, Lorin E. Harris
UAES Bulletins
Approximately two million sheep graze the native ranges of Utah each year. These animals are on the range most of the year and their food supply must come from range plants as they are normally selected. The nutritive value of range forage is often borderline or deficient in essential nutrients, yet, sufficiently adequate to prevent obvious physiological disorders. These mild deficiencies may affect the productive efficiency of the animal even though no symptoms are apparent.
Genetic And Taxonomic Studies In Gilia: I. Gilia Capitata, Verne Grant
Genetic And Taxonomic Studies In Gilia: I. Gilia Capitata, Verne Grant
Aliso: A Journal of Systematic and Floristic Botany
No abstract provided.
Leaflet No 1003 - The Salt Problem In The Wheat Belt, G. H. Burvill
Leaflet No 1003 - The Salt Problem In The Wheat Belt, G. H. Burvill
Bulletins 1 - 2999
IN the wheat belt of Western Australian bare patches in farm paddocks are often seen. Many are bare, or almost bare, because of too much salt in the soil. The excess of salt prevents the germination of seeds, or kills living plants, because it causes the water supply for germination or growth to be cut off. This salt problem is so serious in places that single farms or groups of farms have been ruined; wheat growing on them has become unprofitable.
Soil-Root Relationships Of Certain Native Grasses In Various Soil Types, J. E. Weaver, R. W. Darland
Soil-Root Relationships Of Certain Native Grasses In Various Soil Types, J. E. Weaver, R. W. Darland
Department of Agronomy and Horticulture: Faculty Publications
Table of Contents:
Introduction
Methods
Selecting The Site
Preparing The Trench
Marking Out The Monolith
Examination Of Soil
Preparing And Washing Away Of The Soil
Preparing The Roots For Photographing And Quantitative Study
Photographing And Sectioning The Root System
Examples Of Root Distribution In Different Types Op Sol
Kentucky Bluegrass
Blue Grama
Big Bluestem
Root Distribution In Soils With Claypans
Western Wheat Grass In Crete Silty Clay Loam
Western Wheat Grass In Butler Silt Loam
Root Development In Adjacent Soil
Western Wheat Grass In Scott Silty Clay Loam
Western Wheat Grass In Rendzina Soil
Root Distribution In Mellow Loess Soils …
A Study Of Saponification Rates As Characteristic Of Esters, Thomas F. Mitchell Jr.
A Study Of Saponification Rates As Characteristic Of Esters, Thomas F. Mitchell Jr.
Bachelors’ Theses
The saponification of esters has been the subject of considerable study, and the technology of manipulation of the reaction well defined. As a result, the reaction has become a quantitative standard for ester analysis. However the comparison of the rates of this reaction with various esters as charaeteristic of them has received little consideration compared to the course of the reaction. The work of Mr. F. E. Adler on the adaptation of fat constants to waxes suggested the problem. The thesis will attempt to ascertain any significant differences in the saponification rates of various esters with regard to their characterization.
The Comparative Value Of Commercial Phosphoric Acid As A Fertilizer, Bruce L. Baird
The Comparative Value Of Commercial Phosphoric Acid As A Fertilizer, Bruce L. Baird
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The practice of applying fertilizers to the soil by adding the liquid form to the irrigation water is increasing in popularity. There are several advantages maintained for such a method of application. Some of the advantages are:
(A) Ease of application.
(B) No special equipment is required for application.
(C) The fertilizer can be applied at any stage of plant growth without physical disturbance of the plant.
(D) Penetration into the root zone may be greater than the dry fertilizers.
Considerable phosphate fertilizer is used on soils of irrigated regions. If the behavior of liquid phosphoric acid after its incorporation …
Bulletin No. 336 - Utah Agricultural Experiment Station Biennial Report, 1946-1948, R. H. Walker
Bulletin No. 336 - Utah Agricultural Experiment Station Biennial Report, 1946-1948, R. H. Walker
UAES Bulletins
During the past biennium there has been a general expansion in the research program of the Agricultural Experiment Station. This was made possible through increased state legislative appropriation and through federal funds made available by the Agricultural Research and Marketing Act which passed Congress in August 1946, although funds were not available until August 1947. Grants-in-aid by state and private agencies have also made other research possible.
California Plant Communities, Philip A. Munz, David D. Keck
California Plant Communities, Philip A. Munz, David D. Keck
Aliso: A Journal of Systematic and Floristic Botany
No abstract provided.
Mechanical Transmission Of A Plant Tumor Virus To An Insect Vector, Karl Maramorosch, Myron K. Brakke, L. M. Black
Mechanical Transmission Of A Plant Tumor Virus To An Insect Vector, Karl Maramorosch, Myron K. Brakke, L. M. Black
Department of Plant Pathology: Faculty Publications
Most plant viruses transmitted by leafhoppers have not been demonstrated to be infective in extracts. The virus dealt with in this paper causes tumors in certain susceptible plants, is carried by leafhoppers, and like others in that group has proven difficult to detect in extracts. It is our purpose to recount briefly the variety of methods that failed to transmit the virus and to report on the success of insect-to-insect transmission by injection.
Bulletin No. 335 - Reclamation Of Saline-Alkali Soils By Leaching: Delta Area, Utah, R. C. Reeve, L. E. Allison, D. F. Peterson Jr.
Bulletin No. 335 - Reclamation Of Saline-Alkali Soils By Leaching: Delta Area, Utah, R. C. Reeve, L. E. Allison, D. F. Peterson Jr.
UAES Bulletins
Salinity is a problem of irrigation agriculture and is recognized as a serious threat to crop production in the Western States. All water used for irrigation, whether diverted from surface stream or pumped from wells, contains dissolved salts in amounts varying from a few hundred pounds to several tons per acre-foot (8,23). Salts accumulating in the root zone of the soil, as water is removed by crop and by surface evaporation eventually, may restrict crop yields. Extensive areas of land in the Western States, which were at one time productive under irrigation, have been abandoned because of the development of …
Bulletin No. 331 - Cost And Efficiency Of Canning Pea Production In Cache And Box Elder Counties, Utah, Earnest M. Morrison
Bulletin No. 331 - Cost And Efficiency Of Canning Pea Production In Cache And Box Elder Counties, Utah, Earnest M. Morrison
UAES Bulletins
The production of field peas for canning purposes has played an important part in Utah's agriculture, furnishing some of the intensity needed on her small farms. Peas are a crop that can be handled largely with the labor of the operator and his family and has not required any specialized machinery for their production. They are a suitable alfalfa nurse crop and in most areas do not compete greatly with other crops grown for the farmer's time.
The Emergence And Survival Of Certain Forage Plants When Seeded In A Saline Soil, Devere Richard Mcallister
The Emergence And Survival Of Certain Forage Plants When Seeded In A Saline Soil, Devere Richard Mcallister
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Salty soils are recognized as an ever increasing problem connected with irrigation agriculture. Millions have been spent by state, federal and private agencies on technical research in an attempt to solve this problem. Other millions have been spent on drainage projects, land leveling, field explorations and soil amendments attempting to alleviate the situation in the field.
Bulletin No. 330 - Peach Orchard Soil Mangement Studies, A. L. Stark, D. W. Thorne
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. 329 - Cost And Efficiency Of Producing Sugar Beets In Utah, 1945, Ernest M. Morrison
Bulletin No. 329 - Cost And Efficiency Of Producing Sugar Beets In Utah, 1945, Ernest M. Morrison
UAES Bulletins
Early in the history of Utah the pioneers became interested in sugar-beet production. In 1852 John Taylor, Elias Morris and others, under the direction of Brigham Young, obtained machinery from France for refining beet sugar, transported it across the Atlantic Ocean by boat, up the Mississippi River to Fort Leavenworth, and thence across the plains to Utah by ox teams. The factory was established in what is now known as Sugar House in the southeastern part of Salt Lake City. These initial efforts proved to be unsuccessful primarily because the "open kettle" method employed was never satisfactory.
Not until 1891 …
Bulletin No. 332 - Cost And Efficiency Of Celery Production In Box Elder And Utah Counties In 1945 And 1947, Earnest M. Morrison
Bulletin No. 332 - Cost And Efficiency Of Celery Production In Box Elder And Utah Counties In 1945 And 1947, Earnest M. Morrison
UAES Bulletins
The production of celery by farmers in Utah has undergone important changes in the past five or six years. The most notable have been centered around the introduction of the new green type (Pascal) celery. The methods of production have advanced rapidly, the quality of the product has been greatly improved, the yield per acre has been increased at least twofold, and the acreage has been expanded.
With the growing impetus of the industry have come requests for information on cost and return to the farmer and for an analysis of other economic and physical factors associated with the industry. …
Effects Of Mowing Frequency On The Yield And Protein Content Of Several Grasses Grown In Pure Stands, L. C. Newell, F. D. Keim
Effects Of Mowing Frequency On The Yield And Protein Content Of Several Grasses Grown In Pure Stands, L. C. Newell, F. D. Keim
Nebraska Agricultural Experiment Station: Historical Research Bulletins
This paper presents results of a five-year experiment conducted at the Agricultural Experiment Station, Lincoln, Nebraska, on the adaptation, yield, and quality of several grasses subjected to different frequencies of harvest as a means of determining their forage value.
Bulletin No. 327 - Utah Agricultural Experiment Station Biennial Report, 1944-1946, R. H. Walker
Bulletin No. 327 - Utah Agricultural Experiment Station Biennial Report, 1944-1946, R. H. Walker
UAES Bulletins
During the past biennium there has been a general expansion in the research program of the Utah Agricultural Experiment Station. Although some of the investigations were curtailed by lack of personnel and equipment and the pressure of wartime assignments, many of the staff were able to devote more time to research because of a lessening of the teaching load at the College. The emergency caused a re-examination of the research program, old projects, no longer urgent were weeded out, others were revised to meet the needs of the changing times, and many new projects were initiated to extend the research …
Bulletin No. 326 - Rainfall And Irrigation In Relation To Soil Erosion, Willard Gardner, John Hale Gardner, C. W. Lauritzen
Bulletin No. 326 - Rainfall And Irrigation In Relation To Soil Erosion, Willard Gardner, John Hale Gardner, C. W. Lauritzen
UAES Bulletins
This paper attempts to point out to farmers, agricultural specialists, and others who may be interested, pertinent facts regarding rainfall intensity and other meteorological data that have to do with the wearing down of range and agricultural soils, and to present by means of diagrams illustrations of general relationships between the rate of wearing down of irrigated soils, the size of the irrigation stream and the slope of the eroding surface.
Large streams running down steep slopes, whether from rainfall or from irrigation, constitute a destructive process that cannot be completely controlled. Fortunately, vegetation protects the soil against the destructive …
Bulletin No. 325 - An Economic Study Of Sheep Production In Southwestern Utah, Dee A. Broadbent, George T. Blanch, W. Preston Thomas
Bulletin No. 325 - An Economic Study Of Sheep Production In Southwestern Utah, Dee A. Broadbent, George T. Blanch, W. Preston Thomas
UAES Bulletins
Range sheep production has been one of the major agricultural enterprises in Utah, particularly in the southwestern part of the state, since these areas were first settled. Stock sheep numbers in Utah were about 2,100,000 by 1890, which is approximately the present number in the state. Since 1890 the numbers have fluctuated between 2,000,000 and 2,775,000.
This important industry has, from the time of its introduction, been closely associated with the use of public range lands. The unrestricted grazing of public range lands resulted in damage to a considerable area and was one of the important factors that led to …
Bulletin No. 324 - Some Physical And Chemical Responses Of Agropyron Spicatum To Herbage Removal At Various Seasons, L. A. Stoddart
Bulletin No. 324 - Some Physical And Chemical Responses Of Agropyron Spicatum To Herbage Removal At Various Seasons, L. A. Stoddart
UAES Bulletins
Management of arid western ranges must be based upon the physiology of the individual plants which constitute the range. Too little is known of the ability of range plants to continue normal functioning under stress of grazing. Grazing doubtless has some beneficial influences in arid climates because it reduces transpiring surface. Possibly "pruning" has some stimulating effect, especially upon shrubs, and also, grazing animals plant seeds through trampling action. Despite these possible benefits, both trampling and removal of herbage by grazing must be .regarded as fundamentally detrimental to the welfare of plants, especially in arid climates. Trampling, especially on wet …