Digital Commons Network^™

Some Individual Plant Biomass Values From Northeastern Minnesota, Lewis F. Ohmann, David F. Grigal

Aspen Bibliography

No abstract provided.

Forest Insect And Disease Management : Aspen Mortality At The Maroon Lake Campground, David W. Johnson, Thomas E. Hinds

Aspen Bibliography

At the request of the White River National Forest, Dave Johnson, Plant Pathologist, FI&DM and Tom Hinds, Plant Pathologist, RMFRES, made an evaluation of aspen mortality in the Maroon Lake Campground, Aspen Ranger District during June 13 to 15, 1977. Previously, Hinds (1976) reported accelerated aspen loss in 17 campgrounds, including Maroon Lake, located throughout Colorado and New Mexico (Fig. 1).

Aspen Mortality At The Maroon Lake Campground, Aspen Ranger District, White River National Forest, David W. Johnson, Thomas E. Hinds, G.L. Downing, F.A. Dorrell

Aspen Bibliography

No abstract provided.

Nutrient Transport In Surface Runoff And Interflow From An Aspen-Birch Forest, D.R. Timmons, E.S. Verry, R.E. Burwell, R.F. Holt

Aspen Bibliography

No abstract provided.

A Survey Of Soil Invertebrates In Two Aspen Forests In Northern Minnesota, T.L. Wagner, W.J. Mattson, J.A. Witter

Aspen Bibliography

Productivity of ecosystems depends to a large extent on the quantity of available nutrients. In natural ecosystems, much of the nutrient stock is unavailable because it is bound in live and dead organic matter. Additions to the pool of available nutrients come from several sources, but the largest and most important one is dead organic matter. Therefore, the productivity of ecosystems is often said to be related to the rate of nutrient release from, or the mineralization of, organic litter (Ghilarov 1971, Satchell 1974).

Biomasse D'Un Peuplement De Peuplier Faux-Tremble Age Six Ans, René Doucet

Aspen Bibliography

The establishment of an experiment designed to study the effect of thinning and fertilization in a 6 year-old trembling aspen stand, provided the opportunity to determine the mass of the standing crop present at the age.

Proceedings Of The Utah Water Pollution Control Association Annual Meeting 1977, James H. Reynolds, Donna H. Falkenborg

Reports

Preface: This volume is the first published proceeding of the Utah Water Pollution Associations Annual Meeting. The Technical Program of the Annual Meeting was divided into five separate sessions. The program was developed to attract individuals concerned with management, design and operation of wastewater treatment facilities. Special emphsis was given to the design and operation of wastewater filtration devices. Unfortunately, four papers are not included in the proceedings because the authors failed to meet the submission deadline. These papers are (1) "Utah Discharge Requirements" by Calvin Sudweeks, (2) "Chlorine, Califorms, 1977 Standards and you" by Robert A. Sperling, (3) "Panel …

Growth And Uptake Dynamics Of Selenastrum Capricornutum Parameterized By Percent Nitrogen, Ronald F. Malone, Kenneth A. Voos, William J. Grenney

Reports

Batch cultures of

A Model Of Environmental Transport Of Heavy Metals Originating From Stack Derived Particulate Emission In Semi-Arid Regions, J. J. Jurinak, William J. Grenney, Gene L. Wooldridge, J. Paul Riley, R. J. Wagenet

Reports

Executive Summary:

Weather Modification Studies: The Potential For Creating And Utilizing Ice Crystals In Weather Modification Activities, Kenneth G. Hubbard

Reports

A method utilizing ice crystals to circumvent nucleation processes in cloud seeding activities is discussed in the framework of nuclei activation concepts. Ice, in the form of small crystals, would be a highly efficient cloud seeding materia up to 0 degrees Celsius. The lower limit on humidity would necessitate dispensing the crystals into air that is saturated with respect to ice but no requirement for 100 percent RH(relative humidity) was found. In fact, the lower limit varies with temperature linearly from about 95 percent RH at -5 degrees Celsius to 75 percent RH at -30 degrees Celsius. Preparation of small …

Series Intermittent Sand Filtration Of Wastewater Lagoon Effluents, David W. Hill, J. H. Reynolds, D. S. Filip, E. J. Middlebrooks

Reports

Previous researches have found single stage intermittent sand filtration to be a feasible and economic means of upgrading wastewater lagoon effluent to meet future standards. However the major constraint on their use has been the length of the filter runs. Laboratory scale and pilot-scale series intermittent sand filtration of wastewater lagoon effluents has been found to substantially increase the length of filter runs as well as produce a high quality effluent able to meet future standards. Higher loading rates were round to be possible with series intermittent sand filtration. The operation consistently produced an effluent meeting present Utah “Class C” …

Mixed Integer Programming Models For Water Resources Management, Brad A. Finney, William J. Grenney, A. Bruce Bishop, Trevor C. Hughes

Reports

A regional water quality control model is developed by linking a steady-state water quality simulation model with an optimization model. The water quality simulation model can be applied to complex river systems with both point and nonpoint loads using multiple interdependent pollution parameters described by either linear or nonlinear equations. Twelve water quality parameters can be modeled simultaneously: four non conservative constituents (or conservative constituents if the decay rate is set equal to zero); coliform bacteria (MPN); phosphorus; biochemical oxygen demand (BOD); ammonia (NH3); nitrate (NO3); dissolved oxygen (DO); temperature (°C); and algae. The water quality model is used to …

Effects Of Soil Heterogeneity On One-Dimensional Infiltration, Charles Courette, Roland W. Jeppson

Reports

A parameter study for heterogeneous infiltration was performed employing a one-dimensional computer program. Soil heterogeneity was defined by linear variations of soil parameters. From the solutions obtained, the instantaneous and accumulative infiltration rates were correlated versus the rate in which the parameters varied in the soil profile. The end result being coaxial graphs from which a relative infiltration rate may be obtained by inputting time and the rates of change of various soil parameters.

Upgrading Aerated Lagoon Effluent With Intermittent Sand Filtration, Richard P. Bishop, James H. Reynolds, Daniel S. Filip, E. Joe Middlebrooks

Reports

Intermittent sand filtration was evaluated as a means of upgrading the quality of aerated lagoon effluents to satisfy the requirements of PL 92-500. The aerated lagoon in question treats the wastes from a milk and cheese factory located in northern Utah. The treatment system consists of two diffused air aeration ponds followed by a facultative settling pond, were applied to pilot scale intermittent sand filters with 0.17 mm and 0.40 mm effective size sands. The filters were loaded hydraulically from 0.25 million gallons per acre per day to 1.0 million gallons per acre per day. It was found that sand …

Performance Evaluation Of An Existing Seven Cell Lagoon System, James H. Reynolds, Ralph E. Swiss, Christine A. Macko, E. Joe Middlebrooks

Reports

No abstract provided.

Survey Of The History, Development, And Medical Uses Of Chinese Acupuncture, Kendell G. Hansen

Undergraduate Honors Capstone Projects

It is difficult to pick up a magazine, medical or otherwise, that does not include an article about the Chinese method of diagnosis and treatment known as acupuncture. This ancient technique, about which there is so much current interest, is reputed to have originated nearly 30 centuries ago when a Chinese warrior emperor made the observation that certain arrow wounds caused pain to disappear in remote parts of the body.

During World War II, the new China of the Red Army rediscovered the effectiveness of acupuncture in the treatment of wounded or sick soldiers during combat conditions. Today, Chinese medical …

Biomass And Nutrient Content Of Green Material The Size Of Medium And Large Litter, William E. Miller

Aspen Bibliography

No abstract provided.

Utah Science Vol. 37 No. 4, Decemer 1976

Utah Science

Agricultural Research: Your Dollars Working for You 99

A New Look at Snowmold Rex F. Nielson and Raymond L. Cartee Snowmold no longer has to be endured as an irresistible threat to winter wheat. Properly timed applications of furnace ash give effective protection 100

Cereal Disease Research James A. Hoffmann By attacking the organisms on fronts other than plant resistance, a recently expanded USDA research program may provide the key to a durable control of dwarf smut. 103

Dwarf Smut vs. Winter Wheat in Utah Wade G. Dewey The perennial battle between plant breeders and dwarf smut organisms waxes with …

Leaf Epidermal Transmittance Of Ultraviolet Radiation And Its Implication For Plant Sensitivity To Ultraviolet-Radiation Injury, Ronald Robberecht

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Leaf epidermal transmittance of ultraviolet radiation (280-400 nm) was examined in several plant species to determine the capability of the epidermis to attenuate solar ultraviolet radiation. Epidermal samples were mechanically isolated and examined with a spectroradiometer/integrating sphere for transmittance. A survey of 25 species exposed to natural insolation was conducted. Although the species differed in life form, habitat type, and epidermal characteristics, epidermal transmittance was generally less than 10%. Ultraviolet radiation was attenuated 95 to 99% in more than half of the species. In 16 species, flavonoid and related pigments in the epidermis accounted for 20 to 57% of the …

Effect Of Fertilizer And Moisture On Seed Yield Of Onion, N. S. Shasha'a, W. F. Campbell, William P. Nye

All PIRU Publications

Inbred onions, Allium cepa L, were grown with different levels of fertilizer and soil. moisture to determine treatment influence on seed yield. Nitrogen (253 kg/ha) alone or in combination with P (162 kg/ha> reduced plant survival, umbels per plant, pollination index, and seed yield where soil moisture was low but the reduction was nil. or not as severe where soil moisture was high.

Utah Science Vol. 37 No. 2, June 1976

Utah Science

Snow Flowers Frank B. Salisbury 35

Alfalfa Insects and Nematodes - A New Handbook 41

Subdivision Out In the County Can Be Expensive: An Update Paul A. Randle and Philip R. Swensen 42

County Government Costs and Population Growth . . . . . W. Cris Lewis and Lyle M. Johnson 47

The Great Salt Lake: Problems Potential and Pending Decisions Lois M. Cox 52

How to Figure Crop Production costs Frank Condie 59

Using chemicals to Protect Utah's Bees Lois M. Cox 61

Development Of A Water Quality Simulation Model Applicable To Great Salt Lake, Utah, Craig T. Jones, Calvin G. Clyde, William J. Grenney, J. Paul Riley

Reports

The development of a model capable of predicting the long term (seasonal) . distribution of water quality constituents within Great Salt Lake was undertaken as a portion of the ongoing Great Salt Lake project at Utah State University. The overall goal of the project is the development of a modeling framework to assist relevant decision making bodies in the comprehensive management of the Great Salt Lake system. Phase I of the project provided the overall structural framework for management of the Great Salt Lake system, identified data needs, and established priorities for the development of submodels for incorporation into the …

Triage, Howard B. Peterson

Faculty Honor Lectures

Throughout most of this century Utah State University has been developing its competence to a position of eminence in the science and art of irrigation and related fields of agriculture and engineering. It has accepted the responsibility to train local as well as international students and through a contract with USAID, conduct research in developing countries. Thus, we in irrigation find ourselves an integral part of the U.S. strategy to assist in closing the gap in development and hopefully winning the battle against world famine. To many this seems hopeless, and it may be, but I have a feeling that …

Rodent-Habitat Relationships In Great Basin Desert Shrub Communities, Stephen J. Montgomery

Biology

Rodents were live-trapped in 2.7 ha grids in five Great Basin desert shrub communities in NW Utah during June, July, and August, 1974. The eight species captured, in decreasing order of abundance, were: Dipodomys ordii, Peromyscus maniculatus, Perognathus parvus, Eutamias minimus, Reithrodontomvs megalotis, Onychomys leucogaster, Neotoma lepida, and unknown. For each grid, mean monthly density for each rodent species, species diversity (Shannon-Wiener), and total animals captured were compared to various vegetation and soil characteristics. Densities in the first four species correlate significantly with different environmental variables. Rodent species diversity correlates primarily with shrub …

A Thermodynamic Analysis Of A Primary Waste Stabilization Pond, Will D. Pote

Biology

Traditional design practice for waste stabilization ponds is based upon the premise that sufficient photosynthetic oxygen must be produced within the pond to satisfy oxygen requirements of the incoming waste flow. Thus, because algae production is proportional to pond surface area, surface organic loading rate is a principal design criterion (hydraulic detention time is the other). That a possible adverse energy trade exists in the sequence of coupled reactions (aerobic waste degradation-photosynthesis) has been largely ignored. This work is focused on quantitatively articulating this energy trade, in terms of algae produced vis a vis waste degraded. This is done by: …

Feeding Studies Of Selected Predators On Alfalfa Weevil Larvae, Hypera Postica (Gyllenhal), Bakary Vassery Ouayogode

Biology

Two species of spiders and 10 species of predatory insects were fed alfalfa weevil larvae in the laboratory. Most of the studies used instars III and IV, but some used II. Daily consumption records were kept. Experiments using both weevil larvae alone, and weevil larvae together with pea aphids and lygus bug nymphs, were included. Hippodamia convergens (adults and larvae), Coccinella transversoguttata (adults), Nahis ferus (adults), Nabis alternatus (adults), Chrysopa oculata (larvae), and Collops vittatus (adults) all clearly preferred aphids to either weevil larvae or lygus nymphs. In the absence of aphids, the two coccinellids fed on weevil larvae readily. …

A Comparative Anatomical Study Of Several Sections In The Genus Polygonum, Timothy K. Lowrey

Biology

A comparative anatomical study of fourteen species in eight sections of the genus Polygonum was undertaken. The general anatomy of the stem, leaf, and petiole is described and compared. Qualitative attributes of the cortical and vascular tissue are considered to be taxonomically useful. The section Avicularia is recognized as possessing a number of significant anatomical differences as compared to the other sectlons. The anatomy suggests the widely accepted Linnean classification of Polygonum does not reflect the true relationships existing between the groups in the genus. Possible environmental influences on the anatomic structure are noted. Interesting anatomical structures such as cortical …

Patterns Of Management Thought: The Search For New Perspectives, Howard M. Carlisle

Faculty Honor Lectures

the past several years, I have noticed that the presenters have typically done two things: they have reviewed some of their most significant research or theoretical contributions, and they have engaged in some freewheeling speculations or prescriptions about future trends. I intend to do both of these tonight. I would like to report on several aspects of contingency or situational theories of management where I have done most of my publishing, and I would also like to express some personal concerns and prescriptions I propose to improve the effectiveness of organizations

Soil Inorganic Nitrogen As An Environmental Trigger For Weed Seed Germination, David Jeffrey Schimpf

Biology

A model of adaptive germination was tested by observing germination responses of six annual weed species with respect to soil nitrate levels. Setaria lutescens (Weigel) Hubbard, Echinochloa crusgalli (L.) Beauv., and Amaranthus retroflexus L. were selected as species for which it would be adaptive to increase germination percentages when soil nitrate was high. Avena fatua L., Brassica nigra (L.) Koch, and Medicago lupulina L. were selected as species for which it woμld be adaptive to decrease germination percentages when soil nitrate was high. A controlled environment was used for the experiments, except for one field experiment with M. lupulina. Emphasis …

Adaptive Aspects Of The Vocal Repertoire Of The Willet, Tex A. Sordahl

Biology

Free-living Willets, Catoptrophorus semipalmatus inornatus, were studied during the breeding seasons of 1974 and 1975 in Cache County, Utah. Upon arrival in early April the birds congregated at communal courtship-feeding ponds for 2-3 weeks. They subsequently dispersed to surrounding fields where nesting territories were maintained. The birds began forming flocks in mid-June and all birds had departed by mid-August. A spectrographic analysis is presented for the 10 adult and one chick vocalizations recognized in this study, and a numerical and a biological description is given for each call. The Pill-will-willet flight-song and the accompanying song-flight are discussed in detail. A …