Physical Sciences and Mathematics Commons^™

Harvest Management, Harold Vaught

Kentucky Alfalfa and Stored Forage Conference

Harvest management is not an easy topic to address. Every farm or field may present a different situation, thus, decisions must be made by the grower as to the harvest schedule he uses. Most everything I will discuss has research to back it up but I will not reference it. I must say that some of my comments have come from experience and observation over a period of many years.

Managing Leaf Spot Diseases Of Alfalfa, William C. Nesmith

Kentucky Alfalfa and Stored Forage Conference

Approximately 25-30 diseases attack and reduce the yield, quality or stand longevity of alfalfa in Kentucky. The largest number of these diseases are leaf spot. Generally, the leaf spots diseases are more important in reducing quality due to leaf loss than direct killing of plants. Some of the leaf spots are severe enough to warrant specific controls aimed directly at them while others are managed through more general practices.

Weed Management In Alfalfa, William W. Witt

Kentucky Alfalfa and Stored Forage Conference

Weeds compete with alfalfa for water, nutrients, light, and space. This competition can decrease yields, lower forage quality, increase disease and insect problems, create harvesting problems, and initiate or poison the animals which will consume the forage. Premature loss of alfalfa stands is usually the result of the interaction of the pest complex - diseases, insects, and weeds.

Kentucky's Ipm Program For Alfalfa, Chris M. Christensen

Kentucky Alfalfa and Stored Forage Conference

Integrated Pest Management (IPM) is a concept that encourages the use of a variety of strategies in the management of crop pests. It is very important to have an indepth understanding of the crop production system when implementing an IPM program. An IPM program is dynamic requiring a continual evaluation of the status of the crop, the associated pest complex, the effects of the pests and the biological deterrents to those pests. If a pest population gets "out of hand" and begins to cause economic damage, pest management techniques may need to be applied. These pest management measures may be …

Soil And Fertility Management, Lloyd W. Murdock

Kentucky Alfalfa and Stored Forage Conference

Alfalfa is a high producing, labor intensive, high cost and high return crop. Therefore, it only makes sense not to limit its production or longevity by establishing it on unsuitable soil or by the use of unsound fertility practices. It is the aim of this paper to propose practices which will not limit the production of alfalfa, but, also allow it to be done as efficiently as possible with only the necessary inputs.

Kentucky Alfalfa Variety Testing Program, Roy E. Sigafus

Kentucky Alfalfa and Stored Forage Conference

In the 1950's and 60's alfalfa variety trials were conducted by the Lexington staff at 5 to 7 locations. Trials are now limited to Lexington and Princeton, but numerous demonstration seedings are established by the Extension Service personnel throughout the state.

Establishment And Early Management Of Alfalfa Stands For Hay And Silage Production, J. Kenneth Evans, Charles T. Dougherty

Kentucky Alfalfa and Stored Forage Conference

To achieve high levels of productivity and long-lived alfalfa stands, farmers must treat alfalfa as a crop and not as a pasture on the back forty. In this paper we present current recommendations for establishment and early management of alfalfa stands in Kentucky. See AGR-76, Alfalfa-The Queen of Forage Crops, and AGR-64, Establishing Forage Crops, for more detailed information.

Alfalfa In Kentucky — Situation And Challenge, Garry D. Lacefield

Kentucky Alfalfa and Stored Forage Conference

Alfalfa is one of the most important forage crops in the United States. Of all commonly grown forages, it is among the highest in feeding value and has the highest yield potential of all adapted perennial forage legumes. Alfalfa is grown over a wide range of soil and climatic conditions and can play an important role in soil conservation. Alfalfa is a versatile crop which can be used as pasture, hay and silgage. As a result of its versatility, yield potential and quality, it can be used successfully in all livestock feeding programs.

Foreword [1983], Garry D. Lacefield

Kentucky Alfalfa and Stored Forage Conference

This is the front matter of the proceedings.

On Surface Properties Of The One-Component Plasma, M-L Rosinberg, J-P Badiali, Jerry Goodisman

Chemistry - All Scholarship

We consider a plasma of point ions in the presence of a non-uniform neutralising background. This background. the source of an external field, may have some of its parameters (density, form of surface profile, etc) modified, as long as the total charge is maintained. By considering such modifications in the context of the density-functional formalism for the ions, we prove sum rules giving the first and second moments of the ion density p(z) in terms of other properties (bulk pressure and temperature derivative of surface tension). The Poisson-Boltzmann functional is considered in detail. We show that the first and second …

General Correction For Electrode Sphericity In Voltammetry Of Nernstian Systems, Jerry Goodisman

Chemistry - All Scholarship

The current is considered at a stationary reversible spherical electrode whose potential E(t) as a function of time is given, such that E(t) determines the ratio of oxidized to reduced species at the electrode surface. Writing the current as that for planar geometry, I0, plus corrections for sphericity, we derive formulae for the corrections. The first two are expressed as integrals over I0, with no explicit dependence on the potential, for any form of E(t), and whether the reduced species diffuses into the electrode or into the solution. If the ratio of diffusion constants for oxidized and reduced species is …

Stork: An Experimental Migrating File System For Computer Networks, Jehan-Francois Paris, Walter F. Tichy

Department of Computer Science Technical Reports

No abstract provided.

Climate Model For Winter Wheat Yield Simulation, Kenneth G. Hubbard, R.J. Hanks

School of Natural Resources: Faculty Publications

Winter wheat yields were simlulated by a model requiring climatic data as input for estimating crop evapotranspiration and phenological development. An assumed relationship between the winter wheat yields and the amount and timing of crop water use was optimized to simulate yields for two case studies: a single season, irrigated wheat study, and a multi-year, dryland wheat study. The model explained more than 90% of the variance of wheat yields in the irrigated study where total irrigation amounts varied between 0 and 55 cm. About 40% of the variance was explained for annual yields from a 21-year, dryland winter wheat …

Volume 7, Number 2 (February 1983), The Solar Ocean Energy Liaison

The OTEC Liaison

No abstract provided.

Effect Of Fertilizer Salts On Crop Production, V. P. Evangelou

Soil Science News and Views

Soil consists largely of mineral and organic matter, air, and water. Plants obtain nutrients from mineral and organic matter, oxygen from air, and they use water as a carrier of nutrients from the soil into the root and to the above ground portion of plants.

Since soil water functions as a carrier of nutrients from solid fractions of soil into and through plants, it plays a very important role in plant nutrition. Because of this importance, correct chemical balance of the soil solution is necessary for best crop performance. This means that pH of the solution should be in the …

Reflections In A Polished Tube, Laurence A. Marschall, Emma Beth Marschall

Physics and Astronomy Faculty Publications

When one of us (E.B.M.) dislodged a metal tube from an electric door chime recently, she inadvertently introduced her father to an attractive and instructive optical phenomenon. Looking down the highly polished inner surface of the cylinder we could see a spot surrounded by a series of bright concentric rings. The pattern looked much like the display of fringes produced by a Fabry-Perot or Michelson interferometer, except that the rings were more evenly spaced instead of crowding together strongly near the edge of the field of view. [excerpt]

The Probe, Issue 29 - February 1983

The Probe: Newsletter of the National Animal Damage Control Association

The Probe National Animal Damage Control Association February, 1983
FIRST EASTERN WILDLIFE DAMAGE CONTROL CONFERENCE
SIXTH SOUTHEAST DEER STUDY GROUP
Burrow fumigant for ground squirrels
Calling Predators
Rabies
Coyotes: Predators and survivors
Rat Bait
Humane Society
Animal rights activists
Bromethalin
Procedures for evaluating predation on livestock and wildlife
Do your sunflowers droop?
The sink or swim Everglades herd
Bobcat suit by the Defenders of Wildlife
Letters to the Editor
Ol’ Timer’s Corner

Single-Reflection Film—Substrate Half-Wave Retarders With Nearly Stationary Reflection Properties Over A Wide Range Of Incidence Angles, R. M.A. Azzam, M. Emdadur Rahman Khan

Electrical Engineering Faculty Publications

The complex reflection coefficient for the p polarization of a transparent film on an absorbing or transparent substrate can be made equal to the negative of that for the s polarization, and hence the film—substrate system acts as a half-wave retarder (HWR), by proper selection of film refractive index N₁, film thickness d, and angle of incidence Φ. This condition, which generally holds only at normal incidence, becomes possible at oblique incidence also if N₁ is within a certain range, 1 < N₁ < N̂₁ . For a given substrate and given N₁, …

Monthly Planet, 1983, February, David S. Goldsmith, Huxley College Of The Environment, Western Washington University

The Planet

No abstract provided.

Interpretation Of Anomalies In The Raman Spectrum Of K2Seo4 In Terms Of Oxygen Sublattice Disorder, Nestor Massa, Frank Ullman, John R. Hardy

John R. Hardy Papers

Raman scattering from K₂SeO₄ crystals has been studied in the (20-800)-K temperature range. Three portions of the spectrum are discussed: defect-induced scattering, primarily below 100 cm^-1, the external mode spectrum below 200 cm^-1, and the internal mode spectra in two regions, 300-500 and 800-950 cm^-1. The temperature dependence of the low-frequency, defect-induced scattering has been correlated (in previous studies) with the temperature dependence of certain nonzero-wave-vector phonons that have been observed by others using inelastic neutron scattering. Close to the incommensurate transition temperature, T_i= 129 K, a large enhancement …

Quality Factor For Low Doses Of High-Let Radiations, Werner Hofmann, Robert Katz

Robert Katz Publications

The International Commission on Radiological Protection (ICRP77) and the International Commision on Radiation Units and Measurements (ICRU70) have recommended that the evaluation of radiation hazards be based on the “dose equivalent” defined as the product of the absorbed dose and some modifying factors, the most important of which is the quality factor (Q). The quality factor is intended to allow for the effect on the resulting detriment of the microscopic distribution of the absorbed energy. It is therefore defined as a function of the collision stopping power (L_∞) in water at the point of interest. Thus Q rises …

Reduced Set Of Phages For Typing Salmonellae, Melvin Gershman, George Markowsky

Computer Science Faculty Research & Creative Works

A set composed of 27 phages is described for differentiating Salmonella spp. representative of groups A, B, C₁, C₂, D₁, D₂, E₁, E₂, E₃, E₄, G₁, K, and N. All of the 1,245 cultures used in this effort were typable and were differentiated on the basis of the 420 phage patterns observed. All results were reproducible. Characteristic phage patterns were produced by a variety of Salmonella serovars isolated from campus incidents and a number of hospital, family, restaurant, and processing plant outbreaks …

Bathymetric Prediction From Seasat Altimeter Data, Timothy H. Dixon, M. Naraghi, M. K. Mcnutt, S. M. Smith

School of Geosciences Faculty and Staff Publications

The linear response function technique is used to analyze two 1300-km tracks of SEASAT altimeter data and corresponding bathymetry in the Musician Seamounts region north of Hawaii. Bathymetry and geoid height are highly correlated in the 50- to 300-km wavelength range. A predictive filter is developed which can operate on SEASAT altimetry in poorly surveyed oceanic regions to indicate the presence of major bathymétrie anomalies. Modeling of the bathymetry-geoid correlation in the Musician region is attempted using the elastic plate model. The flexural rigidity D of the plate is not well constrained by our data but appears to lie in …

An Inventory Of Public, Industry, And Power-Generating Water Use In Nebraska, 1979 And 1980, Dennis R. Lawton, Cynthia L. Veys, Owen Goodenkauf

Conservation and Survey Division

No abstract provided.

Bibliography Of Nebraska Geology, 1843-1976, John H. Sandy, Jay Fussell

Conservation and Survey Division

Preface

The computer brightened the 1970s considerably by giving researchers a tool for storing, retrieving and manipulating electronically sizable blocks of literary material on a single subject. which would otherwise have cost researchers years of scholarly investigation to bring together. It was in such a propitious moment mat we set out to assemble this state bibliography as an aid to scholars, researchers. scientists, teachers, writers, editors, and decision makers in the earth sciences, universities, and all levels of government.

As we collected, compiled, and checked citations for this bibliography, we relied heavily on the following standard sources that have indexed …

Extension Of Compartmental Parameters To Blocks Of Compartments With Application To Lipoprotein Kinetics, S. M. Grundy, Jerome Eisenfeld

Mathematics Technical Papers

Suppose that the compartments of a compartmental model are separated into blocks (sets of compartments). In general, the blocks can not be regarded as compartments but it may be possible to construct a "condensation model," the compartments of which correspond to the blocks, in such a fashion so as to retain certain salient properties of the blocks. Condensation is a way of formally summarizing a large model by presenting a smaller one in order to emphasize certain characteristics.of the larger model. Suppose that the parameters to be retained are the mean residence times through the blocks. The paper deals with …

A Rapid Affinity Chromatography Procedure For The Isolation Of Glucose-6-Phosphate Dehydrogenase From Human Erythrocytes, Chris Craney, M. Goffredo

Chris L. Craney

The isolation of glucose-6-phosphate dehydrogenase from outdated human erythrocytes (type AB+) utilizing NADP+ affinity chromatography and gel-permeation chromatography (Bio-Gel P-150) yields a fully active, homogeneous preparation. The procedure is faster and gives a higher yield than previous reports.

Track Formation In Plastics, Robert Katz

Robert Katz Publications

It is proposed that the “threshold for etchable track formation” in plastics is associated with the linear density of activated polymeric clusters along the path of an ion, in the “grain-count regime.” Existing data for CR-39 reveal a change in etching rate in the neighborhood of z/β having the value of about 15-20. We infer that this defines the transition from the grain count regime to the track width regime, as the activation cross-section exceeds the cross-sectional area of the cluster. This interpretation is consistent with available data for the G value for polymer scission and the dose of gamma-rays …

Supplemental Water Supplies Policy Issue Study: A Contract Report For The State Water Planning And Review Process-Nebraska Natural Resources Commission.

Conservation and Survey Division

No abstract provided.

Precise And Accurate Determination By Infrared Photometry Of Co2 Dynamics In Marine Ecosystems, Kenneth M. Johnson, Curtis M. Burney, John Mcn. Sieburth

Marine & Environmental Sciences Faculty Articles

Preliminary studies with an ampule analyzing unit and infrared (IR) detector showed that procedures for standardization and determination of total carbon dioxide (ΣCO₂), while often precise, lacked the accuracy required to estimate the net productivity and respiration of aquatic ecosystems during studies in which sampling over diel cycles was used. Scaling down sample and standard volumes to the µl range and the use of a commercial sodium carbonate standard without dilution before and after replicate sample injections gave accurate results as shown by comparison with indirect (pH-alkalinity) ΣCO₂, determinations with a standard error of ±3 µmoles …