Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 30 of 64
Full-Text Articles in Entire DC Network
Predicting Transpiration Rates Of Hydroponically-Grown Plant Communities In Controlled Environments, Oscar Monje
Predicting Transpiration Rates Of Hydroponically-Grown Plant Communities In Controlled Environments, Oscar Monje
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Canopy transpiration is a major factor determining crop evapotranspiration and energy budgets. Unfortunately the development of robust models of canopy transpiration is hindered by a lack of reliable data due to the difficulties of making canopy-scale measurements. However, measurements of canopy water vapor and carbon fluxes via gas exchange techniques are possible in controlled environments. Simultaneous measurements of transpiration, photosynthesis, and canopy temperature were made in wheat and soybean communities. These data were used to calculate chamber aerodynamic and canopy stomata! conductances, and to model the response of canopy transpiration to CO2concentration and vapor pressure deficit. Canopy stomata! …
Perceived Fairness And Effectiveness Of Rangeland Collaborative Processes, Kimberly J. Richardson
Perceived Fairness And Effectiveness Of Rangeland Collaborative Processes, Kimberly J. Richardson
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Involvement in collaborative partnerships in natural resource management has become a popular method for natural resource management agencies to collect public input, cope with conflicts, and develop ecosystem management plans. This thesis evaluates various collaborative processes, emphasizing multiple-owner partnerships. Qualitative interviews of 46 landowners in Utah were conducted to reveal concerns and suggestions regarding multiple-owner landscape-level collaborative partnerships. Landowners were concerned about private property rights infringement and losing control of their private land. Landowners were primarily concerned about the fairness and effectiveness of any partnership in which they were involved.
However, they were willing to consider participating if certain procedural …
Management Of Microbial Nitrate Production In Agricultural Soils, Wei Shi
Management Of Microbial Nitrate Production In Agricultural Soils, Wei Shi
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Nitrate (NO3-) is of central importance in the internal soil nitrogen (N) cycle. While animal wastes and nitrification inhibitors have been used in modern agriculture for decades, their effects on soil NO3- concentrations in relation to microbial NO3- production have not been well characterized. The objective of this research was to determine microbial NO3- production in relation to ammonium (NH4+) availability and nitrifier population activity in agricultural soils receiving animal wastes or nitrification inhibitors.
Several laboratory and field studies assessed the impacts of variously treated dairy wastes and …
An Investigation Of Crystalline Intensity Of The Wood Of Poplar Clones Grown In Jiangsu Province, China, Bernard R. Parresol, Fuliang Cao
An Investigation Of Crystalline Intensity Of The Wood Of Poplar Clones Grown In Jiangsu Province, China, Bernard R. Parresol, Fuliang Cao
Aspen Bibliography
No abstract provided.
Utilization Of Spatially Distributed Soil Resources By Several Species Common To The Great Basin, Sarah Duke
Utilization Of Spatially Distributed Soil Resources By Several Species Common To The Great Basin, Sarah Duke
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Heterogeneous spatial and temporal distributions of soil resources important to plant growth have been documented in the sagebrush steppe ecosystem. There can exist as much variability in soil resources within the root zone of individual plants as exists across an entire field. The objective of this dissertation research was to evaluate how plants respond to, utilize and influence the spatial heterogeneity of soil resources. The three specific sets of questions addressed are outlined in the three main chapters of this dissertation.
My first study addressed how the number and concentration of phosphorus (P) patches in the root zone of an …
Ammonium And Nitrate Effects On Growth, Development And Nutrient Uptake Of Hydroponic Wheat, Thomas M. Hooten
Ammonium And Nitrate Effects On Growth, Development And Nutrient Uptake Of Hydroponic Wheat, Thomas M. Hooten
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The long-term effects of low and high NH4+/ NO3- uptake ratios in a system with rigorous control of pH and nitrogen concentration are poorly understood. In two replicate studies, two cultivars of wheat (Triticum aestivum) were grown to maturity with three NH4+/ NO3- ratios in hydroponic solution: 0/100, 25/75, and 85/15%. Nitrogen was controlled at ample levels throughout the 70-d life cycle and pH was controlled at 5.8 ± 0.2. An equimolar ratio of NH4+ to Cl- was used to facilitate charge balance. Nitrogen consumption …
Regeneration Ecology Of Chrysopogon Aucheri And Cymbopogon Jwarancusa In Grasslands Of Upland Balochistan, Pakistan, Sarfraz Ahmad
Regeneration Ecology Of Chrysopogon Aucheri And Cymbopogon Jwarancusa In Grasslands Of Upland Balochistan, Pakistan, Sarfraz Ahmad
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Field experiments were conducted to investigate the seed attributes, movements and fates of dispersal units, and seedling establishment of Chrysopogon aucheri and Cymbopogon jwarancusa in a representative grassland ecosystem in upland Balochistan, Pakistan.
Cymbopogon jwarancusa had more filled and viable caryopses than Chrysopogon aucheri. Seeds (spikelets) of both species had similar morphological features. Chrysopogon aucheri had one dispersal unit, a triplet spikelet. Cymbopogon jwarancusa had four types of dispersal units: a paired spikelet, a partial raceme, an entire raceme, and a partial inflorescence comprised of two racemes.
Paired spikelets and partial racemes of Cymbopogon jwarancusa had greater …
Water Uptake, Water Relations, Tree Growth, And Root Distribution Under Herbaceous Competition, Bertha Alicia Hernandez-Leos
Water Uptake, Water Relations, Tree Growth, And Root Distribution Under Herbaceous Competition, Bertha Alicia Hernandez-Leos
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
There are numerous situations where trees are grown together with herbaceous plants. In these situations there will be some degree of competition between their root zones, depending on the water content of the soils and crop and tree root distribution. Two studies were conducted: the first with maple (Acer platanoides) grown in turf grass, and the second with willow (Salix matsudana) grown in more deeply rooted barley. The objectives of this study were to quantify the effect of herbaceous competition of potential tree water stress under irrigation and when the soil is allowed to dry-down. Soil …
Wildflowers, Dennis Hinkamp
Trees Still Coping With Wet Spring, Dennis Hinkamp
Trees Still Coping With Wet Spring, Dennis Hinkamp
All Archived Publications
No abstract provided.
Train Your Lawn Not To Beg For Water, Dennis Hinkamp
Train Your Lawn Not To Beg For Water, Dennis Hinkamp
All Archived Publications
No abstract provided.
They're Hoppin' Our Way - Grasshoppers, Dennis Hinkamp
They're Hoppin' Our Way - Grasshoppers, Dennis Hinkamp
All Archived Publications
No abstract provided.
The Losing Battle Against Bermuda Grass, Dennis Hinkamp
The Losing Battle Against Bermuda Grass, Dennis Hinkamp
All Archived Publications
No abstract provided.
Pick A Tree That Fits Your Landscape, Dennis Hinkamp
Pick A Tree That Fits Your Landscape, Dennis Hinkamp
All Archived Publications
No abstract provided.
Peaches: Eat Them Now, Plan For Next Year, Dennis Hinkamp
Peaches: Eat Them Now, Plan For Next Year, Dennis Hinkamp
All Archived Publications
No abstract provided.
The Masters Of Gardening Keep Utah Growing, Dennis Hinkamp
The Masters Of Gardening Keep Utah Growing, Dennis Hinkamp
All Archived Publications
No abstract provided.
Late Season Gardening Can Still Be Successful, Dennis Hinkamp
Late Season Gardening Can Still Be Successful, Dennis Hinkamp
All Archived Publications
No abstract provided.
Gophers Eat Into Ag Prophits, Dennis Hinkamp
Gophers Eat Into Ag Prophits, Dennis Hinkamp
All Archived Publications
No abstract provided.
Understanding Latin Plant Names, Dennis Hinkamp
Understanding Latin Plant Names, Dennis Hinkamp
All Archived Publications
No abstract provided.
Next Year's Lawn Starts Today, Dennis Hinkamp
Next Year's Lawn Starts Today, Dennis Hinkamp
All Archived Publications
No abstract provided.
Restricted Use Pesticides, Howard M. Deer
Restricted Use Pesticides, Howard M. Deer
All Archived Publications
No abstract provided.
Utah's Pest Peeves, Dennis Hinkamp
The Rhodies Less Traveled, Dennis Hinkamp
The Rhodies Less Traveled, Dennis Hinkamp
All Archived Publications
No abstract provided.
So Many Gourds, So Little Time, Dennis Hinkamp
So Many Gourds, So Little Time, Dennis Hinkamp
All Archived Publications
No abstract provided.
Keep Your Bird Feeder Safe, Dennis Hinkamp
Keep Your Bird Feeder Safe, Dennis Hinkamp
All Archived Publications
No abstract provided.
Prepare Your Yard For Sleep, Dennis Hinkamp
Prepare Your Yard For Sleep, Dennis Hinkamp
All Archived Publications
No abstract provided.
Buy The Dog, Not The Puppy When Shopping For Conifers, Dennis Hinkamp
Buy The Dog, Not The Puppy When Shopping For Conifers, Dennis Hinkamp
All Archived Publications
No abstract provided.
It Has Been A Restful Winter For Northern Utah Trees, Dennis Hinkamp
It Has Been A Restful Winter For Northern Utah Trees, Dennis Hinkamp
All Archived Publications
No abstract provided.
Starting Bedding Plants Indoors Can Be Tricky, Dennis Hinkamp
Starting Bedding Plants Indoors Can Be Tricky, Dennis Hinkamp
All Archived Publications
No abstract provided.
Help California Transplants Adapt, Dennis Hinkamp
Help California Transplants Adapt, Dennis Hinkamp
All Archived Publications
No abstract provided.