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Articles 1 - 30 of 89
Full-Text Articles in Life Sciences
Abortion In Cattle, Clell Bagley
Abortion In Cattle, Clell Bagley
All Current Publications
Abortion is the premature expulsion of the fetus from the dam and usually occurs because the fetus has died in-utero. If death occurs at 1-2 months of gestation, it is usually termed “early embryonic death.”
Synecology And Disturbance Regimes Of Sagebrush Steppe Ecosystems, Neil E. West
Synecology And Disturbance Regimes Of Sagebrush Steppe Ecosystems, Neil E. West
Wildland Resources Faculty Publications
The pre-Columbian mixed-growth form, composition, and structure of sagebrush steppes was mostly due to the highly variable semiarid climate and long fire-free intervals. The weak stability of this relatively complex vegetation was easily upset by excessive livestock grazing, especially in drought periods. After a few decades of uncontrolled livestock grazing, it was easy for introduced winter annuals, especially cheatgrass, to dominate the understory and alter the fire regime to larger, more frequent fires that occur earlier in the year. Accelerated soil erosion has caused many sites to lose the potential for management back toward native perennial dominance by controlling only …
Energy Conservation With Irrigation Water Management, Robert Hill
Energy Conservation With Irrigation Water Management, Robert Hill
All Current Publications
Irrigators in Utah experienced rapidly increasing energy costs from the mid 1970s to the late 1980s. These costs remain relatively high. Those who are pumping from deep wells are particularly interested in ways to cut back on energy use without doing away with profitability or production
How Good Is Your Water Measurement?, Robert Hill
How Good Is Your Water Measurement?, Robert Hill
All Current Publications
Accurate water measurement is essential to maintaining equity of water delivery within an irrigation company or water districts. Good management of our scarce water resource is dependent upon quantifying supplies and uses with accurate measurement techniques. State water rights adjudication and management procedures often require installation of water measurement devices and keeping records of flows.
Environmental Stress And Winterizing Plants, Larry A. Sagers, Jerry L. Goodspeed
Environmental Stress And Winterizing Plants, Larry A. Sagers, Jerry L. Goodspeed
Archived Gardening Publications
No abstract provided.
The Vines That Ate Utah, Dennis Hinkamp
The Vines That Ate Utah, Dennis Hinkamp
All Archived Publications
No abstract provided.
Tomatoes - Tips To Avoid Their Tantrums, Dennis Hinkamp
Tomatoes - Tips To Avoid Their Tantrums, Dennis Hinkamp
All Archived Publications
No abstract provided.
Boom Sprayer Calibration For Pesticide Applications, Richard Beard, Howard M. Deer
Boom Sprayer Calibration For Pesticide Applications, Richard Beard, Howard M. Deer
All Current Publications
To protect your investment in agricultural pesticides, a boom sprayer should be calibrated at the start of the season and whenever application conditions change. Also, sprayer output should be periodically checked throughout the season to assure proper application rate. Although boom sprayers are calibrated in a variety of ways, each method utilizes the measurements of nozzle flow rate and equipment travel speed.
The Dirt As Your Canvas, Dennis Hinkamp
The Dirt As Your Canvas, Dennis Hinkamp
All Archived Publications
No abstract provided.
Tent Caterpillars - Are They Setting Up Camp In Your Yard?, Dennis Hinkamp
Tent Caterpillars - Are They Setting Up Camp In Your Yard?, Dennis Hinkamp
All Archived Publications
No abstract provided.
Fungus - Nothing Cute About Fairy Rings, Dennis Hinkamp
Fungus - Nothing Cute About Fairy Rings, Dennis Hinkamp
All Archived Publications
No abstract provided.
Filberts - Nutty Trees, Shrubs And "Trubs", Dennis Hinkamp
Filberts - Nutty Trees, Shrubs And "Trubs", Dennis Hinkamp
All Archived Publications
No abstract provided.
Deicing Compounds And Utah Landscapes, Rich Koenig, Larry Rupp
Deicing Compounds And Utah Landscapes, Rich Koenig, Larry Rupp
All Archived Publications
No abstract provided.
Apples From B.C. To Y2k, Dennis Hinkamp
Apples From B.C. To Y2k, Dennis Hinkamp
All Archived Publications
No abstract provided.
Green Canyon Recreation Management Plant, Jesse Evans, Erin Haddock, Todd Tibbetts, Lindsey Topham
Green Canyon Recreation Management Plant, Jesse Evans, Erin Haddock, Todd Tibbetts, Lindsey Topham
Green Canyon Environmental Research Area, Logan Utah
The purpose of this plan is to look at the way Green Canyon is currently being managed and make recommendations for management based on our findings. Prior to this document, a Landscape Assessment was conducted on Green Canyon. This plan incorporates that assessment but focuses on the recreation management of the canyon. We will discuss history, current management, social conditions, purpose and need, as well as methods we used to go about gathering information. The focus is to identify key issues and concerns within the canyon. Management recommendations will be made based on the issues and concerns identified.
Pesticide Storage Facility Design And Management Plan, Stephen E. Poe, Howard M. Deer, Kitt Farrell Poe
Pesticide Storage Facility Design And Management Plan, Stephen E. Poe, Howard M. Deer, Kitt Farrell Poe
All Archived Publications
No abstract provided.
Fall 1998 Raptor Migrations Study In The Wellsville Mountains Of Northern Utah, United States Department Of Agriculture, Forest Service
Fall 1998 Raptor Migrations Study In The Wellsville Mountains Of Northern Utah, United States Department Of Agriculture, Forest Service
Elusive Documents
The Wellsville Mountains raptor migration study in northern Utah is an ongoing effort to monitor longterm trends in populations of raptors using this northern Rocky Mountain migratory flyway. Raptors feed atop food pyramids, inhabit most ecosystems, occupy large home ranges, and are sensitive to environmental contamination and other human disturbances. Therefore, they serve as important biological indicators of ecosystem health (Cade et al. 1988; Bednarz et al. 1990a; Bildstein and Zalles 1995). For example, long-term migration counts in the eastern United States documented declines in several raptor species and helped us understand the deleterious effects of organochlorine pesticides (Spofford 1969, …
Final Environmental Impact Statement: Wasatch Powderbird Guides Permit Renewal, U.S. Forest Service
Final Environmental Impact Statement: Wasatch Powderbird Guides Permit Renewal, U.S. Forest Service
Final environmental Impact Statements (UT)
Analysis of the proposed action and six alternatives considered for the proposed special use permit renewal for Wasatch Powderbird Guides (WPG). WPG operates a guided helicopter skiing concession on the Wasatch-Cache and Uinta National Forests near Salt Lake City, Utah.
1998 Annual Report, Various Authors
Conditioned Food Aversions: Principles And Practices, With Special Reference To Social Facilitation, Michael H. Ralphs, Frederick D. Provenza
Conditioned Food Aversions: Principles And Practices, With Special Reference To Social Facilitation, Michael H. Ralphs, Frederick D. Provenza
Behavioral Education for Human, Animal, Vegetation, and Ecosystem Management (BEHAVE)
Conditioned food aversion is a powerful experimental tool to modify animal diets. We have also investigated it as a potential management tool to prevent livestock from grazing poisonous plants such as tall larkspur (Delphinium barbeyi), white locoweed (Oxytropis sericea) and ponderosa pine (Pinus ponderosa) on western US rangelands. The following principles pertain to increasing the strength and longevity of aversions: mature animals retain aversions better than young animals; novelty of the plant is important, although aversions can be created to familiar plants; LiCl is the most effective emetic, and the optimum dose for cattle …
Molecular Marker Analysis Of Leymus Flavescens And Chromosome Pairing In Leymus Flavescense Hybrids (Poaceae: Triticae), David Hole, K B. Jensen, R R-C Wang, S M. Clawson
Molecular Marker Analysis Of Leymus Flavescens And Chromosome Pairing In Leymus Flavescense Hybrids (Poaceae: Triticae), David Hole, K B. Jensen, R R-C Wang, S M. Clawson
Plants, Soils, and Climate Faculty Publications
Leymus flavescens (Scribner&Smith) Pilger, yellow wild rye, is a long-lived, strongly rhizomatous, tetraploid (2n54x528) perennial grass of the tribe Triticeae distributed throughout centralWashington, eastern Oregon, and the Snake River plains of Idaho. Our objectives were (1) to describe chromosome pairing and fertility in F1 hybrids between L. flavescens and North American tetraploids (2n54x528) L. triticoides and L. cinereus and Eurasian tetraploids L. secalinus, L. racemosus, and L. alaicus subsp. karataviensis and (2) to utilize genome-specific random amplified polymorphic DNA (RAPD) markers to verify the genomic composition of L. flavescens. The hybrids L. flavescens # L. triticoides (NsNsXmXm), L. flavescens # …
Influence Of Capsular And Ropy Exopolysaccharide-Producing Strepococcus Thermophilus On Mozzarella Cheese And Cheese Whey, B. L. Peterson, R. I. Dave, Donald J. Mcmahon, C. J. Oberg, Jeff Broadbent
Influence Of Capsular And Ropy Exopolysaccharide-Producing Strepococcus Thermophilus On Mozzarella Cheese And Cheese Whey, B. L. Peterson, R. I. Dave, Donald J. Mcmahon, C. J. Oberg, Jeff Broadbent
Nutrition, Dietetics, and Food Sciences Faculty Publications
We investigated the effect of capsular and ropy exopolysaccharide-producing Streptococcus thermophilus starter bacteria on Mozzarella cheese functionality and whey viscosity. Mozzarella cheeses were manufactured with Lactobacillus helveticus LH100 paired with one of four S. thermophilus strains: MR-1C, a bacterium that produces a capsular exopolysaccharide; MTC360, a strain that secretes a ropy exopolysaccharide; TAO61, a nonexopolysaccharide-producing commercial cheese starter; and DM10, a nonencapsulated, exopolysaccharide-negative mutant of strain MR-1C. As expected, cheese moisture levels were significantly higher in Mozzarella cheeses made with exopolysaccharide-positive versus exopolysaccharide-negative streptococci, and melt properties were better in the higher moisture cheeses. Whey viscosity measurements showed that unconcentrated …
'Super Dwarf' Rice: Temperature Studies, Steve Klassen, Bruce Bugbee
'Super Dwarf' Rice: Temperature Studies, Steve Klassen, Bruce Bugbee
Dwarf Crops
Detailed temperature studies are a prerequisite to the optimization of crop productivity because field studies at ambient CO2 provide only a general guide to optimal temperatures. Meristem temperature has a profound effect on crop development rate, and the optimum temperature usually decreases as the crop matures. Previous studies with semi-dwarf rice (Ai-nan-tsao & 29-Lu-1) indicated that temperatures above about 33 ºC reduce seed set if they occur during anthesis. In rice, high temperatures are especially detrimental if there is rapid dark-to-light temperature increase. Conversely, average day/night temperatures in the mid 20's delay heading and cause an undesirable increase in vegetative …
'Usu-Apogee' Wheat - Registration, Bruce Bugbee, G. Koerner, R. Albrechtsen, W. Dewey, S. Clawson
'Usu-Apogee' Wheat - Registration, Bruce Bugbee, G. Koerner, R. Albrechtsen, W. Dewey, S. Clawson
Dwarf Crops
'USU-Apogee' is a full-dwarf hard red spring wheat (Triticum aestivum L.) (NSSL Reg. no. 331390.01; PI 592742) cultivar developed for high yields in controlled environments. USU-Apogee was developed by the Utah Agricultural Experiment Station in cooperation with the National Aeronautics and Space Administration and released in April 1996. NASA is interested in improved food crops for bioregenerative life support systems in space.
Apogee is the point in an orbit farthest from the earth. USU-Apogee is a shorter, higher yielding alternative to 'Yecora Rojo' and 'Veery-10', the short field cultivars previously selected for use in controlled environments (Bugbee and Salisbury, 1988). …
Unique Procedures For Germinating 'Super Dwarf' Rice, Jonathan Frantz, Bruce Bugbee
Unique Procedures For Germinating 'Super Dwarf' Rice, Jonathan Frantz, Bruce Bugbee
Dwarf Crops
Rice (Oryza sativa L.) is an important crop for advanced life support, but the height of even full-dwarf cultivars (80-cm tall) has made them difficult to use in controlled environments. We identified a rice mutant that lacks 3ß-hydroxylase, the enzyme responsible for conversion of gibberellic acid 20 (GA20) to GA1 (Murai et al., 1990; Honda et al., 1996). GA1 is the active form of GA in most plants, so this rice variety is extremely short (20-cm tall). ‘Super Dwarf’ rice has a higher harvest index (50%) and similar yield to the commonly used rice cultivars ‘Ai-Nan-Tsao’ and ‘29-Lu-1' and its …
Water Storage, Georgia C. Lauritzen
Tomato And Tobacco Hornworms, Jay B. Karren
Tomato And Tobacco Hornworms, Jay B. Karren
All Archived Publications
No abstract provided.
Banded Ash Borer, Jay B. Karren
These Violets Don't Shrink, Dennis Hinkamp
These Violets Don't Shrink, Dennis Hinkamp
All Archived Publications
No abstract provided.
Weaving Dreams Of Spring Gardens, Dennis Hinkamp
Weaving Dreams Of Spring Gardens, Dennis Hinkamp
All Archived Publications
No abstract provided.