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Aftershocks Of The 13 May 1993 Shumagin Alaska Earthquake, Zhong Ludwig, Max Wyss, Guy Tytgat, Stephen R. Mcnutt, Scott Stihler

School of Geosciences Faculty and Staff Publications

The 13 May 1993 M_s 6.9 Shumagin earthquake had an aftershock sequence of 247 earthquakes with magnitudes greater than or equal to 1.5 by 1 June 1993. Of these aftershocks, 79 were located by using S-P travel times at the only two stations within 570 km of the mainshock epicenter. The rupture area inferred from the aftershocks is about 600 km² and we estimate for the mainshock a mean fault displacement of 1.0 m and a 28 bar stress drop. The magnitude-frequency plots give a b-value for the aftershock sequence of about 0.4, which is low compared to …

Miscellaneous Publication 10/94 - The Climate And Soils Of South-Western Australia In Relation To Vine Growing, J. S. Gladstones

Viticulture research reports

The vine industry in Western Australia is at present located mainly in the Swan Valley, some 15 miles inland from Perth. It produces currants for export, wine grapes, and table grapes for both local and export markets, in approximately that order of importance.

Climatically, the Swan Valley is well suited to vine fruit production. With an annual rainfall of about 34 inches, it has a mild, wet, almost frost-free winter, and a warm, dry summer. Olmo (1956) concluded that the Swan was especially well suited to the production of currants, table grapes and sweet dessert wines. However, he considered that …

Supplemental Carbon Dioxide And Light Improved Tomato And Pepper Seedling Growth And Yield, Alejandro Fierro, Nicolas Tremblay, André Gosselin

School of Earth, Environmental, & Marine Sciences Faculty Publications

The experiment was conducted to determine the effects of CO, enrichment (900 μl·liter-1, 8 hours/day) in combination with supplementary lighting of 100 μmol·s-1·m-2 (16- h photoperiod) on tomato (Lycopersicon esculentum Mill.) and sweet pepper (Capsicum annuum L.) seedling growth in the greenhouse and subsequent yield in the field. Enrichment with CO2 and supplementary lighting for » 3 weeks before transplanting increased accumulation of dry matter in shoots by » 50% compared with the control, while root dry weight increased 49% for tomato and 6270 for pepper. Early yields increased by =1570 and 11% for tomato and pepper, respectively.

Marketing Quality Alfalfa Hay, Garry D. Lacefield

Kentucky Alfalfa and Stored Forage Conference

Alfalfa hay is a potentially marketable-profitable product if--if quality is satisfactory to meet buyer's needs, if it is packaged such that it meets buyer's feeding program and can be transported efficiently, if in sufficient quantity, if storage site is accessible by truck or trailer, and if it is competitively priced. Meeting these minimum criteria only means the hay is potentially marketable; only after it has been sold does it become potentially profitable.

Producing Quality Alfalfa Hay, Jimmy C. Henning, Garry D. Lacefield

Kentucky Alfalfa and Stored Forage Conference

Hay is one of the most versatile of stored forages in that (1) it can be kept for long periods of time with little loss of nutrients if protected from weather; (2) a large number of crops can be successfully used for hay production; (3) it can be produced and fed in small or large amounts; (4) it can be harvested, stored and fed by hand or the production and feeding can be completely mechanized; and (5) hay can supply most nutrients needed by many classes of livestock. Hay is, therefore, the most commonly used stored feed on most farms. …

Harvesting Hay For High Yield And Quality — More On Bale Ventilators And Other Harvest Aids, Michael Collins

Kentucky Alfalfa and Stored Forage Conference

In some areas of the country, producers store a substantial portion of their forage for winter feeding as silage or haylage. However, hay remains the most popular storage method for forage. Hay stores well for long periods and is better suited to cash sale and transportation than silage. Mechanical conditioning, which gained acceptance during the 1950's is probably still the greatest single change in hay harvesting and storage technology during this century. However, a number of other noteworthy changes and innovations have occurred in recent years which have helped to reduce the extent of losses during hay harvesting and storage. …

Role In Alfalfa In Livestock Feeding Programs In Kentucky, Donna M. Amaral-Phillips

Kentucky Alfalfa and Stored Forage Conference

Alfalfa, the "Queen of the Forage Crops", is a highly versatile forage crop which can be grazed directly by livestock or harvested as hay or silage. With the development of new alfalfa varieties, increased pest and weed control, and increased demand from livestock owners, the amount of alfalfa fed to livestock will increase. As with any forage crop, proper harvest and feeding management is necessary to reap the benefits.

Fencing For Optimum Grazing, Larry W. Turner

Kentucky Alfalfa and Stored Forage Conference

Controlled or rotational grazing can result in better utilization of forage resources. By better forage management through controlled grazing, producers may increase profitability of cattle/forage systems. To effectively develop a controlled grazing system, however, fencing must be used to subdivide the pasture into sub-fields or paddocks. The animals may then be rotated among the paddocks to optimize forage and beef or dairy production from the system. Alfalfa grazing can play an important part in such a system.

Planning the "best", or optimum, fencing strategy should be done with the overall goal in mind of improving profitability. Key factors that describe …

Grazing Alfalfa — Momentum Continues, Garry D. Lacefield

Kentucky Alfalfa and Stored Forage Conference

In my presentation at our XIII Kentucky Alfalfa Conference held here last year, I stated. that interest in grazing alfalfa was at an all time high. Five other speakers followed me on the program with presentations about alfalfa grazing. Steve Osborne discussed alfalfa grazing trials in Monroe County. Ken Johnson talked about the Do's and Dont's in Alfalfa Grazing. Dr. Roy Burris talked about alfalfa grazing from a state perspective and Mr. Warren Thompson discussed the topic from a national perspective. Professor Joe Bums concluded the grazing portion of the program with grazing alfalfa experiences in Tennessee.

Despite a rather …

Alfalfa Weed Control — Strategies For Success, James R. Martin

Kentucky Alfalfa and Stored Forage Conference

Field evaluation, cultural and chemical practices are key ingredients of a successful weed control program in alfalfa. A weak link in any of these components could lead to reduced profits and possibly shorten the life of an alfalfa stand.

Managing Alfalfa Diseases, Paul C. Vincelli

Kentucky Alfalfa and Stored Forage Conference

Diseases of alfalfa can limit productivity of this valuable forage crop. Alfalfa diseases can reduce forage yield, reduce forage quality, and decrease stand persistence. The effects of diseases can be dramatic, such as sudden stand loss due to Sclerotinia crown and stem rot. Often, the effects of alfalfa diseases are more subtle but are no less important. For example, alfalfa plants with Phytophthora root rot sometimes regrow slowly after cutting, resulting in a stunted stand showing no other obvious symptoms of disease.

Like most crop diseases, alfalfa diseases are most effectively managed by integrating as many control measures as practical. …

Nitrogen And Boron Fertilization Of Alfalfa, Monroe Rasnake

Kentucky Alfalfa and Stored Forage Conference

Very little current research data is available on the response of alfalfa to nitrogen application at establishment or to the addition of boron. University of Kentucky recommendations (AGR-1 Lime and Fertilizer Recommendations) indicate that zero to 30 pounds of nitrogen per acre may be applied at seeding for alfalfa. No nitrogen would be recommended when soil nitrogen levels are likely to be adequate such as where manure or high levels of nitrogen fertilizer had been applied to the previous crop. Annual applications of boron at 1.5-2.0 pounds of elemental boron per acre are recommended.

Neighboring states differ in their nitrogen …

Advances In Alfalfa Variety Development And Testing, Jimmy C. Henning, Leonard M. Lauriault, Linda G. Brown, Garry D. Lacefield, Paul C. Vincelli, John C. Parr

Kentucky Alfalfa and Stored Forage Conference

Alfalfa (Medicago sativa) is historically the highest yielding, highest quality forage legume grown in Kentucky. It forms the basis of Kentucky's cash hay enterprise and is an important component in dairy, horse, beef and sheep diets. Over 300,000 acres of alfalfa are grown annually in Kentucky, with state yields averaging between 3 and 4 tons per acre.

The development and testing of alfalfa varieties is a dynamic process that impacts all Kentucky farmers. The Kentucky Alfalfa Variety Testing program was re-started in 1990 and is carried out through the efforts of several people, including Leonard Lauriault, Linda Brown …

Foreword [1994], Garry D. Lacefield, Christi L. Forsythe

Kentucky Alfalfa and Stored Forage Conference

This is the front matter of the proceedings.

Fundamentals Of Groundwater Contamination, Darryll T. Pederson

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Bulletin 4278 - How To Use Wide Furrow Sowing For Improved Crop Production On Water Repellent Sand, Paul Blackwell, Grant Morrow, Tony Webster

Bulletins 4000 -

Wide furrow sowing is a method for successfully establishing crops of lupins or cereals on non-wetting sands, and improving crop establishment on non-repellent sands. The same principles can be used to assist establishment of fodder shrubs and long-term pasture (e.g. tagasaste and Rhodes grass).

Variation Of Clonal, Mesquite-Associated Rhizobial And Bradyrhizobial Populations From Surface And Deep Soils By Symbiotic Gene Region Restriction Fragment Length Polymorphism And Plasmid Profile Analysis, P. M. Thomas, K.F. Golly, J. W. Zyskind, R. A. Virginia

Dartmouth Scholarship

Genetic characteristics of 14 Rhizobium and 9 Bradyrhizobium mesquite (Prosopis glandulosa)-nodulating strains isolated from surface (0- to 0.5-rn) and deep (4- to 6-m) rooting zones were determined in order to examine the hypothesis that surface- and deep-soil symbiont populations were related but had become genetically distinct during adaptation to contrasting soil conditions. To examine genetic diversity, Southern blots of PstI-digested genomic DNA were sequentially hybridized with the nodDABC region of Rhizobium meliloti, the Klebsiella pneumoniae nifHDK region encoding nitrogenase structural genes, and the chromosome- localized ndvB region ofR. meliloti. Plasmid profile and host plant nodulation assays were also made. Isolates …

Field Test Of "Farm For Profit®" Burley Tobacco Production Program, Kenneth L. Wells, Mark Reese

Soil Science News and Views

Considerable interest exists among local farmers in Scott County, Kentucky, about a "Farm For Profit^®" tobacco production program being advocated by the representative of a product supplier as a means of improving burley tobacco production. Because of this interest, we conducted a field test of this program in 1993. The objective was to compare yield results from this "program" with those from two, more conventional practices.

Environments Of Aeolian Deposition In South-Central Nebraska During The Last Glacial Maximum, Zhao-Dong Feng, William C. Johnson, Robert F. Diffendal Jr.

Robert F. Diffendal, Jr., Publications

The Peoria loess of south-central Nebraska, deposited approximately during the last Glacial Maximum, can be subdivided into three zones: an upper laminated loess and a lower massive loess, separated by a dark gley zone in which bison bones and spruce charcoal are found. The lower Peoria unit is characterized by high organic matter content, relatively high bulk density, and common root channels. The upper Peoria unit has rhythmic patterns of two orders: strongly gleyed and weakly gleyed zones alternating in couplets about 2-5 m thick, and coarse- and fine-grained laminae of second order, about 2-4 mm thick. The strongly gleyed …

Geomorphic And Structural Features Of The Alliance 1º × 2º Quadrangle, Western Nebraska, Discernible From Synthetic-Aperture Radar Imagery And Digital Shaded-Relief Maps, Robert F. Diffendal Jr.

Robert F. Diffendal, Jr., Publications

The digital shaded-relief map of the United States and the synthetic-aperture radar map of the Alliance Nebraska 1º x 2º area prepared by the U.S. Geological Survey (USGS) in the former case and for the USGS in the latter show oriented landforms and lineaments in northwest Nebraska. Parallel and subparallel hills and valleys developed on different geologic materials ranging from shales through sandstones to loess and eolian sand appear to be wind erosional features subsequently modified by running water. The long axes of these hills and valleys generally trend between N40"W and N50"W. Similar features also occur across major areas …

Project Spotlight: Morro Bay Watershed 319 National Monitoring Program Project. National Water Quality Evaluation Project Notes., Karen Worcester, Thomas J. Rice, Jo Beth Mullens

Earth and Soil Sciences

No abstract provided.

Snake: The Plain And Its People, E. B. Bentley, Bill Bonnichsen, John C. Freemuth, Bill Hackett, Glenn Oakley, F. Ross Peterson, Mark G. Plew, Todd Shallat, Steve Stuebner

Faculty & Staff Authored Books

Idaho's longest river curves west through desert landscapes, cutting deep through ancient formations, flowing through space and time. How have humans dealt with the desert? How have we been shaped by the land? SNAKE: The Plain and Its People explores the physical and ecological roots of Idaho civilization through science, social science, photography and art.

An Estimate Of The Source And Uptake Of Nitrogen In Continuous No-Till Com Grain Production, Kenneth L. Wells

Soil Science News and Views

The U.S. Environmental Protection Agency (EPA) has established a maximum nitrate nitrogen (NO₃-N) content of 10 parts per million (ppm) for safe drinking water. Because of this, the effect of commercial nitrogen (N) fertilizers in agricultural production as a contributor of NO₃-N to surface and groundwater is now being widely examined. Since corn production in the US is the largest single source of fertilizer N use, averaging perhaps 100-150 lbs N/A on the 70-80 million acres of corn produced annually, an understanding of N utilization and losses in corn production is helpful in determining the role …

Flood Insurance Study , Riverton, Utah, Salt Lake County, Federal Emergency Management Agency

All U.S. Government Documents (Utah Regional Depository)

This Flood Insurance Study revises and updates a previous Flood Insurance Rate Map for the City of Riverton, Salt Lake County, Utah. This information will be used by the City of Riverton to update existing floodplain regulations as part of the Regular Phase of the National Flood Insurance Program (NFIP). The information will also be used by local and regional planners to further promote sound land use and floodplain development.

Flood Insurance Study, City Of West Jordan, Utah, Salt Lake County, Federal Emergency Management Agency

All U.S. Government Documents (Utah Regional Depository)

This Flood Insurance Study revises and updates a previous Flood Insurance Rate Map for the City of West Jordan, Salt Lake County, Utah. This information will be used by the City of West Jordan to update existing floodplain regulations as part of the Regular Phase of the National Flood Insurance Program (NFIP). The information will also be used by local and regional planners to further promote sound land use and floodplain development.

Flood Insurance Study, City Of Murray, Utah, Salt Lake County, Federal Emergency Management Agency

All U.S. Government Documents (Utah Regional Depository)

This Flood Insurance Study investigates the existence and severity of flood hazards in the City of Murray, Salt Lake County, Utah, and aids in the administration of the National Flood Insurance Act of 1968 and the Flood Disaster Protection Act of 1973. This study has developed flood risk data for various areas of the community that will be used to establish actuarial flood insurance rates and assist the community in its efforts to promote sound flood plain management. Minimum flood plain management requirements for participation in the National Flood Insurance Program (NFIP) are set forth in the Code of Federal …

Flood Insurance Study, Salt Lake County, Utah, Unincorporated Areas, Volume 1, Federal Emergency Management Agency

All U.S. Government Documents (Utah Regional Depository)

This Flood Insurance Study investigates the existence and severity of flood hazards in the unincorporated areas of Salt Lake County, Utah, and aids in the administration of the National Flood Insurance Act of 1968 and the Flood Disaster Protection Act of 1973. This study has developed flood risk data for various areas of the county that will be used to establish actuarial flood insurance rates and assist the county in its efforts to promote sound flood plain management. Minimum flood plain management requirements for participation in the National Flood Insurance Program (NFIP) are set forth in the Code of Federal …

Flood Insurance Study, City Of Sandy City, Utah, Salt Lake County, Federal Emergency Management Agency

All U.S. Government Documents (Utah Regional Depository)

This Flood Insurance Study investigates the existence and severity of flood hazards in the City of Sandy City, Salt Lake County, Utah, and aids in the administration of the National Flood Insurance Act of 1968 and the Flood Disaster Protection Act of 1973. This study has developed flood risk data for various areas of the community that will be used to establish actuarial flood insurance rates and assist the community in its efforts to promote sound flood plain management. Minimum flood plain management requirements for participation in the National Flood Insurance Program (NFIP) are set forth in the Code of …

Flood Insurance Study, Salt Lake County, Utah, Unincorportated Areas, Volume 2, Federal Emergency Management Agency

All U.S. Government Documents (Utah Regional Depository)

This publication incorporates revisions to the original Flood Insurance Study. These revisions are presented in Section 9.0.

Flood Insurance Study, City Of Salt Lake City, Utah, Salt Lake County, Federal Emergency Management Agency

All U.S. Government Documents (Utah Regional Depository)

This Flood Insurance Study investigates the existence and severity of flood hazards in the City of Salt Lake City, Salt Lake County, Utah, and aids in the administration of the National Flood Insurance Act of 1968 and the Flood Disaster Protection Act of 1973. This study will be used to convert Salt Lake City to the regular program of flood insurance by the Federal Emergency Management Agency. Local and regional planners will use this study in their efforts to promote sound flood plain management.