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Articles 1 - 23 of 23
Full-Text Articles in Plant Sciences
Ceratobasidium Root Rot: A New Disease Of Watermelon In Arizona, Claudia Nischwitz
Ceratobasidium Root Rot: A New Disease Of Watermelon In Arizona, Claudia Nischwitz
All Current Publications
No abstract provided.
Resilience To Stress And Disturbance, And Resistance To Bromus Tectorum L. Invasion In Cold Desert Shrublands Of Western North America, Jeanne C. Chambers, Bethany A. Bradley, Cynthia S. Brown, Carla D'Antonio, Matthew J. Germino, James B. Grace, Stuart P. Hardegree, Richard F. Miller, David A. Pyke
Resilience To Stress And Disturbance, And Resistance To Bromus Tectorum L. Invasion In Cold Desert Shrublands Of Western North America, Jeanne C. Chambers, Bethany A. Bradley, Cynthia S. Brown, Carla D'Antonio, Matthew J. Germino, James B. Grace, Stuart P. Hardegree, Richard F. Miller, David A. Pyke
Articles
Alien grass invasions in arid and semi-arid ecosystems are resulting in grass–fire cycles and ecosystem-level transformations that severely diminish ecosystem services. Our capacity to address the rapid and complex changes occurring in these ecosystems can be enhanced by developing an understanding of the environmental factors and ecosystem attributes that determine resilience of native ecosystems to stress and disturbance, and resistance to invasion. Cold desert shrublands occur over strong environmental gradients and exhibit significant differences in resilience and resistance. They provide an excellent opportunity to increase our understanding of these concepts. Herein, we examine a series of linked questions about (a) …
Botrytis Neck Rot Of Onion, Claudia Nischwitz
Botrytis Neck Rot Of Onion, Claudia Nischwitz
All Current Publications
No abstract provided.
Streptomycin Resistance Of Erwinia Amylovora Isolated From Apple (Malus Domesticus) In Utah, Claudia Nischwitz
Streptomycin Resistance Of Erwinia Amylovora Isolated From Apple (Malus Domesticus) In Utah, Claudia Nischwitz
All Current Publications
No abstract provided.
Diffuse Migratory Connectivity In Two Species Of Shrubland Birds: Evidence From Stable Isotopes, Steven T. Knick, Matthias Leu, John T. Rotenberry, Steven E. Hanser, Kurt A. Fesenmyer
Diffuse Migratory Connectivity In Two Species Of Shrubland Birds: Evidence From Stable Isotopes, Steven T. Knick, Matthias Leu, John T. Rotenberry, Steven E. Hanser, Kurt A. Fesenmyer
Articles
Connecting seasonal ranges of migratory birds is important for understanding the annual template of stressors that influence their populations. Brewer’s sparrows (Spizella breweri) and sagebrush sparrows (Artemisiospiza nevadensis) share similar sagebrush (Artemisia spp.) habitats for breeding but have different population trends that might be related to winter location. To link breeding and winter ranges, we created isoscapes of deuterium [stable isotope ratio (δ) of deuterium; δ 2H] and nitrogen (δ 15N) for each species modeled from isotope ratios measured in feathers of 264 Brewer’s and 82 sagebrush sparrows and environmental …
Wildflowers & Other Herbaceous Plants Of Utah Rangelands, Mindy Pratt, Chad Reid, Roger Banner, James Bowns
Wildflowers & Other Herbaceous Plants Of Utah Rangelands, Mindy Pratt, Chad Reid, Roger Banner, James Bowns
All Current Publications
No abstract provided.
The Benefits Of Tannin-Containing Forages, Jennifer W. Macadam, Joe Brummer, Anowarul Islam, Glenn Shewmaker
The Benefits Of Tannin-Containing Forages, Jennifer W. Macadam, Joe Brummer, Anowarul Islam, Glenn Shewmaker
All Current Publications
This fact sheet describes tannins, a group of chemical compounds produced by a number of broadleaf forage plants, that can bind proteins.
Elk (Cervus Elaphus) Seasonal Habitat Selection In A Heterogeneous Forest Structure, Jesse N. Popp, David N.C. Mcgeachy, Josef Hamr
Elk (Cervus Elaphus) Seasonal Habitat Selection In A Heterogeneous Forest Structure, Jesse N. Popp, David N.C. Mcgeachy, Josef Hamr
Aspen Bibliography
Seasonal habitat selection by the reintroduced Burwash elk population, approximately 30 km south of Sudbury, Ontario, has been analysed in order to assist in the development of future management. Twenty-five adult females were radio-collared and tracked 1–3 times a week for 3 years. The most prominent patterns included selection of intolerant hardwood forests (trembling aspen, white birch, and balsam poplar) during all seasons, while Great Lakes-St. Lawrence pines (white and red pine dominated stands) were used less than expected based on availability for all seasons. The selection patterns are likely associated with seasonal climatic conditions and forage preferences. Because the …
Climate Change And Plant Demography In The Sagebrush Steppe, Aldo Compagnoni
Climate Change And Plant Demography In The Sagebrush Steppe, Aldo Compagnoni
Green Canyon Environmental Research Area, Logan Utah
No abstract provided.
Supplemental Greenhouse Lighting: Return On Investment For Led And Hps Fixtures, Jacob A. Nelson, Bruce Bugbee
Supplemental Greenhouse Lighting: Return On Investment For Led And Hps Fixtures, Jacob A. Nelson, Bruce Bugbee
Controlled Environments
LED fixtures are being marketed as a replacement for high pressure sodium fixtures in greenhouse lighting. Here we compare the cost per photon for LED and HPS fixtures based on their ability to convert electrical energy into photons delivered to a horizontal surface below the fixture. Some LED fixtures now exceed the efficiency of the best HPS fixtures by 23%, but the initial capital cost per photon delivered is 5 to 10 times greater. HPS fixtures with electronic ballasts and optimized luminaires (reflectors) are 27% more efficient than widely-used HPS fixtures with magnetic ballasts. Our analysis, however, demonstrates that light …
Photosynthetic Characteristics Of Veratrum Californicum In Varied Greenhouse Environments, Youping Sun, Sarah A. White, David Mann, Jeffery Adelberg
Photosynthetic Characteristics Of Veratrum Californicum In Varied Greenhouse Environments, Youping Sun, Sarah A. White, David Mann, Jeffery Adelberg
Plants, Soils, and Climate Faculty Publications
Corn lily or California false hellebore (Veratrum californicum Durand), a perennial species native to the western United States, produces several alkaloid compounds. A derivative of these alkaloid compounds, primarily veratramine and cyclopamine, shows promise as a therapeutic agent for treatment of a variety of tumor types. Here we report the first study of corn lily cultivated in greenhouse. Growth response of corn lily was examined under two light levels (ambient and supplemental), two fertilization types (20 N-4.4 P-16.6 K Peat-lite special and 15N-2.2P-12.5K CalMag special) at 100-mg·L-1 total nitrogen, and three irrigation cycles [sub-irrigation every day (wet), every third day …
Necrotic Ring Spot And Summer Patch Of Turfgrass, Claudia Nischwitz, Kelly Kopp, Jaydee Gunnell, Kent Evans, Erin Frank
Necrotic Ring Spot And Summer Patch Of Turfgrass, Claudia Nischwitz, Kelly Kopp, Jaydee Gunnell, Kent Evans, Erin Frank
All Current Publications
No abstract provided.
The Economics Of Fuel Management: Wildfire, Invasive Plants, And The Dynamics Of Sagebrush Rangelands In The Western United States, Michael H. Taylor, Kimberly Rollins, Mimako Kobayashi, Robin J. Tausch
The Economics Of Fuel Management: Wildfire, Invasive Plants, And The Dynamics Of Sagebrush Rangelands In The Western United States, Michael H. Taylor, Kimberly Rollins, Mimako Kobayashi, Robin J. Tausch
Articles
In this article we develop a simulation model to evaluate the economic efficiency of fuel treatments and apply it to two sagebrush ecosystems in the Great Basin of the western United States: the Wyoming Sagebrush Steppe and Mountain Big Sagebrush ecosystems. These ecosystems face the two most prominent concerns in sagebrush ecosystems relative to wildfire: annual grass invasion and native conifer expansion. Our model simulates long-run wildfire suppression costs with and without fuel treatments explicitly incorporating ecological dynamics, stochastic wildfire, uncertain fuel treatment success, and ecological thresholds. Our results indicate that, on the basis of wildfire suppression costs savings, fuel …
Occurrence Of Meloidogyne Fallax In North America, And Molecular Characterization Of M. Fallax And M. Minor From U.S. Golf Course Greens, Claudia Nischwitz
Occurrence Of Meloidogyne Fallax In North America, And Molecular Characterization Of M. Fallax And M. Minor From U.S. Golf Course Greens, Claudia Nischwitz
All Current Publications
No abstract provided.
Drought Stress Acclimation Imparts Tolerance To Sclerotinia Sclerotiorum And Pseudomonas Syringae In Nicotiana Benthamiana, Venkategowda Ramegowda, Muthappa Senthil-Kumar, Yasuhiro Ishiga, Amita Kaundal, Makarla Udayakumar, Kirankumar S. Mysore
Drought Stress Acclimation Imparts Tolerance To Sclerotinia Sclerotiorum And Pseudomonas Syringae In Nicotiana Benthamiana, Venkategowda Ramegowda, Muthappa Senthil-Kumar, Yasuhiro Ishiga, Amita Kaundal, Makarla Udayakumar, Kirankumar S. Mysore
Plants, Soils, and Climate Faculty Publications
Acclimation of plants with an abiotic stress can impart tolerance to some biotic stresses. Such a priming response has not been widely studied. In particular, little is known about enhanced defense capacity of drought stress acclimated plants to fungal and bacterial pathogens. Here we show that prior drought acclimation in Nicotiana benthamiana plants imparts tolerance to necrotrophic fungus, Sclerotinia sclerotiorum, and also to hemi-biotrophic bacterial pathogen, Pseudomonas syringae pv. tabaci. S. sclerotiorum inoculation on N. benthamiana plants acclimated with drought stress lead to less disease-induced cell death compared to non-acclimated plants. Furthermore, inoculation of P. syringae pv. tabaci on N. …
Effects Of Blue Light At High Photosynthetic Photon Flux, Saundralyn G. Rhoades, Kevin R. Cope, Chase Snowden, Bruce Bugbee
Effects Of Blue Light At High Photosynthetic Photon Flux, Saundralyn G. Rhoades, Kevin R. Cope, Chase Snowden, Bruce Bugbee
Controlled Environments
No abstract provided.
Early Season Vegetable Gardening, Larry A. Sagers
Early Season Vegetable Gardening, Larry A. Sagers
Archived Gardening Publications
No abstract provided.
Risk Assessment Of Erosion From Concentrated Flow On Rangelands Using Overland Flow Distribution And Shear Stress Partitioning, Osama Z. Al-Hamdan, Frederick B. Pierson, Mark A. Nearing, Christopher Jason Williams, Jeffry J. Stone, Patrick R. Kormos, Jan Boll, Mark A. Weltz
Risk Assessment Of Erosion From Concentrated Flow On Rangelands Using Overland Flow Distribution And Shear Stress Partitioning, Osama Z. Al-Hamdan, Frederick B. Pierson, Mark A. Nearing, Christopher Jason Williams, Jeffry J. Stone, Patrick R. Kormos, Jan Boll, Mark A. Weltz
Articles
Erosion rates of overland flow on rangelands tend to be relatively low, but under certain conditions where flow is concentrated, soil loss can be significant. Therefore, a rangeland site can be highly vulnerable to soil erosion where overland flow is likely to concentrate and exert high shear stress on soil grains. This concept is commonly applied in cropland and wildland soil erosion modeling using predictions of flow effective shear stress (shear stress applied on soil grains). However, historical approaches to partition shear stress in erosion models are computationally complex and require extensive parameterization. Furthermore, most models are not capable of …
Retrofitting Fluorescent Lamp Growth Chambers With Ceramic Metal Halide Lamps, Usu Crop Physiology Lab, Bruce Bugbee, Jacob Nelson
Retrofitting Fluorescent Lamp Growth Chambers With Ceramic Metal Halide Lamps, Usu Crop Physiology Lab, Bruce Bugbee, Jacob Nelson
Controlled Environments
A how-to guide on how to retrofit fluorescent lamp growth chambers with ceramic metal halide lamps.
Transcriptome Characterization And Detection Of Gene Expression Differences In Aspen (Populus Tremuloides), Hardeep S. Rai, Karen E. Mock, Bryce A. Richardson, Richard C. Cronn, Katherine J. Hayden, Jessica W. Wright, Brian J. Knaus, Paul G. Wolf
Transcriptome Characterization And Detection Of Gene Expression Differences In Aspen (Populus Tremuloides), Hardeep S. Rai, Karen E. Mock, Bryce A. Richardson, Richard C. Cronn, Katherine J. Hayden, Jessica W. Wright, Brian J. Knaus, Paul G. Wolf
Aspen Bibliography
No abstract provided.
Aspen Status Report And Recommendation For The Book Cliffs, Paul C. Rogers, Cody M. Mittanck, Ronald J. Ryel
Aspen Status Report And Recommendation For The Book Cliffs, Paul C. Rogers, Cody M. Mittanck, Ronald J. Ryel
Aspen Bibliography
Regionally quaking aspen (Populus tremuloides Michx.) forests are experiencing numerous impediments to resilience. In the West, recent drought, fire suppression, insects, diseases, climate trends, inappropriate management, and ungulate herbivory are impacting these high biodiversity forests. We conducted a landscape assessment of aspen communities in the Book Cliffs region, Vernal Field Office of the Bureau of Land Management, for the purposes of determining landscape-level status of aspen and making recommendations for future management of these forests. The study area consists of 268 distinct aspen polygons totaling approximately 70 ha (174 acres) of aspen forest surrounded by much larger tracts of …
Wolf Creek Ranch Aspen Monitoring Report, Paul C. Rogers, Allison Jones, James Catlin, James Shuler, Arthur Morris, Michael Kuhns
Wolf Creek Ranch Aspen Monitoring Report, Paul C. Rogers, Allison Jones, James Catlin, James Shuler, Arthur Morris, Michael Kuhns
Aspen Bibliography
In the summer of 2012 we undertook a landscape assessment of aspen forest conditions at Wolf Creek Ranch (WCR) near Kamas, Utah. Using a geographic information system (GIS) coverage of predicted aspen coverage, fifty systematically selected field "plots" were located and mapped with aspen stands around WCR. Seven plots were eventually discarded from our survey due to lack of aspen cover. Volunteer field crews, mostly WCR homeowners, collected aspen data documenting tree sizes, height/age groups, diameters, reproduction, mortality, browse levels, and browse animal use levels.
Book Cliffs Roadless Area Aspen Study 2013 : Grand & Uintah Counties, Utah, Cody M. Mittanck
Book Cliffs Roadless Area Aspen Study 2013 : Grand & Uintah Counties, Utah, Cody M. Mittanck
Aspen Bibliography
No abstract provided.