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Patch Seeding On An Extensive Green Roof: Initial Experiment On Microclimate Impacts, Zhuqing Xu 2017 University of Nebraska-Lincoln

Patch Seeding On An Extensive Green Roof: Initial Experiment On Microclimate Impacts, Zhuqing Xu

Theses, Dissertations, and Student Research in Agronomy and Horticulture

The green roof provides not only aesthetic values but also many ecological benefits. In North America, seeding or reseeding with native species becomes increasingly popular as a result of its high efficacy and low cost. The extreme temperature and a lack of water on the green roof impose restrictions on seeds germination that determines the success of a seeding program.

The study started on June 1 and was completed by July 15. Five Great Plains native species were hand-seeded in two blocks on Larson Building green roof, along with two blocks set up in the greenhouse at University of Nebraska-Lincoln ...


Phenotypic Variation And Genetic Purity Of The Original 'Prime-Jim®' X 'Arapaho' Population, Loren M. Luther 2017 University of Arkansas

Phenotypic Variation And Genetic Purity Of The Original 'Prime-Jim®' X 'Arapaho' Population, Loren M. Luther

Horticulture Undergraduate Honors Theses

In 2013, Castro et al., produced the first linkage map for primocane-fruiting blackberries using the cross ‘Prime-Jim®’ x ‘Arapaho.’ This mapping population has been maintained since the original experiment with the hopes of conducting future studies. Further research was determined to be needed on the population to better characterize additional phenotypic traits, and since nine years had passed since the seedlings were established, there was a need to assess the continued genetic purity of the population using molecular methods. Phenotypic data was collected to analyze the variation of the population including soluble solids content, titratable acidity, average weight, shape, and ...


Environmental And Climatic Constraints On Large-Scale Camelina Production In Eastern Arkansas, Benjamin Robert Tracy 2017 University of Arkansas, Fayetteville

Environmental And Climatic Constraints On Large-Scale Camelina Production In Eastern Arkansas, Benjamin Robert Tracy

Theses and Dissertations

Camelina sativa is a cold weather crop that is typically grown in semi-arid environments in the Western United States, usually as a spring crop, but sometimes during the winter. Research analyzing climate data and soil hydrology is important to better understand the environmental and terrain conditions necessary for Camelina farming wherever it is proposed for large-scale production. This study focused on various conditions and constraints pertaining to the potential for Camelina as a crop biofuel in Eastern Arkansas. Due to interest in the economic potential of crop biofuels in this area, and in particular the low input costs for Camelina ...


Establishment Of A New Genebank For Herbaceous Ornamental Plants, David Tay, Mark P. Widrlechner, James L. Corfield 2017 The Ohio State University

Establishment Of A New Genebank For Herbaceous Ornamental Plants, David Tay, Mark P. Widrlechner, James L. Corfield

Mark P. Widrlechner

This paper summarizes the establishment and development of the new Ornamental Plant Germplasm Center (OPGC) of the US National Plant Germplasm System (NPGS), its initial accomplishments, and future plans. We recount its genesis from a concept to the signing of a Special Cooperative Agreement (SCA) in 1999 between the United States Department of Agriculture (USDA) and The Ohio State University (OSU). The roles of the NPGS Herbaceous Ornamental Crop Germplasm Committee (HOCGC), the creation of an OPGC Ad-hoc Advisory Committee in shaping the foundation of the OPGC leading to the appointment of an interim centre programme director, and the employment ...


Photosynthesis And Shoot Health Of Five Birch And Four Alder Taxa After Drought And Flooding, William R. Graves, Mark A. Kroggel, Mark P. Widrlechner 2017 Iowa State University

Photosynthesis And Shoot Health Of Five Birch And Four Alder Taxa After Drought And Flooding, William R. Graves, Mark A. Kroggel, Mark P. Widrlechner

Mark P. Widrlechner

Selection of under-used taxa of birches (Betula L.) and alders (Alnus Miller) for use in managed landscapes can be guided by information on their responses to moisture extremes in the root zone. Our objective was to compare the photosynthesis, leaf surface area, and subjective health ratings of eight relatively obscure birches and alders when treated with drought and flooding in a greenhouse. We also treated ‘Whitespire Sr.’ birch (Betula populifolia) to demonstrate responses of a cultivar common in the nursery trade. Plants used as controls were irrigated daily, whereas pots of flooded plants were immersed. All water was withheld from ...


Promising New Cherries, J. L. Budd 2017 Iowa Agricultural College

Promising New Cherries, J. L. Budd

Bulletin (Iowa Agricultural Experiment Station)

In the summer of 1882 the writer had a fine opportunity for studying the character of tree and fruit of the European cherries from the valley of the Moselle in East France, eastward to the Volga in Russia. In the spring of 1883 we imported one year old trees o f the varieties which we decided to be most promising for trial on the prairies of the Northwest. These trees were set in orchards and have had hard U 6 a g e , as they have been exposed to the recent test summers and winters, that have killed out the ...


Hardiness In The Apple As Correlated With Structure And Composition, S. A. Beach, F. W. Allen Jr. 2017 Iowa State College

Hardiness In The Apple As Correlated With Structure And Composition, S. A. Beach, F. W. Allen Jr.

Research Bulletin (Iowa Agriculture and Home Economics Experiment Station)

The breeding of hardy apples is naturally such a long time proposition that it would be a distinct advantage if by microscopic examination of the wood, by mechanical tests, or by other observations the hardiness of a tree could be determined while it was still in the nursery, The following is a summary of the facts brought out in the investigation of "Hardiness in the Apple as Correlated with Structure and Composition. "

1. The cutting, compression and penetration tests seemed to indicate some correlation between hardiness and hardness, but exceptions were found.

2, Twigs from northern sections, except the forms ...


Strawberries For The Home Garden, Michael Pace, Jerry Goodspeed, Adrian Hinton, Shawn Olsen 2017 Utah State University

Strawberries For The Home Garden, Michael Pace, Jerry Goodspeed, Adrian Hinton, Shawn Olsen

Shawn Olsen

No abstract provided.


Gambel Oak Care, Shawn Olsen, Debbie Amundsen 2017 Utah State University

Gambel Oak Care, Shawn Olsen, Debbie Amundsen

Shawn Olsen

No abstract provided.


Grass Pasture Response To Water And Nitrogen, Robert W. Hill, Robert Newhall, Scott Williams, Brian Andrew 2017 Utah State University

Grass Pasture Response To Water And Nitrogen, Robert W. Hill, Robert Newhall, Scott Williams, Brian Andrew

Scott Williams

The objective of this project is to study the response of pasture grass varieties to weather, irrigation and fertility in a field experimental plot at a high elevation. The water variable is accomplished with a line source sprinkler irrigation system. Two nitrogen fertility levels were imposed on two of the grass varieties


Managing Soil Ph In Utah, Jody Gale, Rich Koenig 2017 Utah State University

Managing Soil Ph In Utah, Jody Gale, Rich Koenig

Jody Gale

PH is a measure of the acidity or alkalinity of a substance. The range of pH for most soils is from 4 to 10 (Figure 1). The pH scale is logarithmic, meaning that a change in one numerical pH unit equals a 10-fold change in acidity or alkalinity.


Solutions To Soil Problems: I. High Salinity (Soluble Salts), Vernon Parent, Rich Koenig 2017 Utah State University

Solutions To Soil Problems: I. High Salinity (Soluble Salts), Vernon Parent, Rich Koenig

Vernon Parent

Salinity is a measure of the total amount of soluble salts in soil. As soluble salt levels increase, it becomes more difficult for plants to extract water from soil. Some plants are more resistant than other’s, but as the salt levels exceed their ability to extract water, they become water stressed.


Shrub Selection For Utah Landscapes, Taun Beddes, JayDee Gunnell, Heidi Kratsch, Rick Hefelbower 2017 Utah State University

Shrub Selection For Utah Landscapes, Taun Beddes, Jaydee Gunnell, Heidi Kratsch, Rick Hefelbower

Jaydee Gunnell

Urban and suburban landscapes present special challenges concerning shrub selection in Utah. Due to our distinctive climate, shrubs must be able to withstand intense sunlight, low relative humidity, drying winds, and limited seasonal precipitation. Additionally, landscapes may also have shady locations and areas of high moisture that create unique situations. This means that ideally before purchasing shrubs, a person should research suitable species adapted to the specific location where they will be planted. Even with the unique conditions that challenge shrub species, many still perform well and should be used more often in the landscape. They soften architectural structures, provide ...


Water-Wise Landscaping: Plant Maintenance, Taun Beddes, Heidi A. Kratsch 2017 Selected Works

Water-Wise Landscaping: Plant Maintenance, Taun Beddes, Heidi A. Kratsch

Taun Beddes

No abstract provided.


Lawn Fertilizers For Cool Season Turf, Taun Beddes, Kelly Kopp 2017 Utah State University

Lawn Fertilizers For Cool Season Turf, Taun Beddes, Kelly Kopp

Taun Beddes

Lawns provide a durable and functional surface for many outdoor activities while adding beauty to the landscape. For these reasons, a healthy, green lawn is the goal of many homeowners and landscape managers. Keeping a lawn healthy and green may require many management practices such as mowing, irrigation and aerification. Often, these practices will include fertilizing with supplemental nutrients at various times during the growing season. This promotes optimum turf color, improves re-growth, and increases tolerance to wear, drought, insects and disease. The broad number of fertilizer options available from retailers can make choosing a fertilizer difficult. However, choosing an ...


Water-Wise Landscaping: Monitoring Irrigation With Probes, Rich Koenig, Kelly Kopp, Chad Reid 2017 Utah State University Extension

Water-Wise Landscaping: Monitoring Irrigation With Probes, Rich Koenig, Kelly Kopp, Chad Reid

Chad Reid

No abstract provided.


Solutions To Soil Problems: V. Low Organic Matter, Kevin Heaton, Rich Koenig 2017 Utah State University

Solutions To Soil Problems: V. Low Organic Matter, Kevin Heaton, Rich Koenig

Kevin Heaton

Utah soils are inherently low in organic matter due to the desert climate and historically low plant growth rates. In Utah, soil organic matter levels are typically 0.25 to 1%, while regions with high rainfall such as the Midwest and Eastern United States have soils with as much as 7 to 10% organic matter.


Strawberries In The Garden, Brent Black, Michael Pace, Jerry Goodspeed 2017 USU Extension

Strawberries In The Garden, Brent Black, Michael Pace, Jerry Goodspeed

Michael Pace

No abstract provided.


Growing Turf On Salt-Affected Sites, Michael Pace, Paul Johnson 2017 Utah State University

Growing Turf On Salt-Affected Sites, Michael Pace, Paul Johnson

Michael Pace

In many areas of Utah, high salt levels in the soil limit the growth of some turfgrasses, especially Kentucky bluegrass. This fact sheet was written to assist you in determining if you have a soil with a high salt level and, if you do, how to manage it with the use of irrigation, drainage, and salt tolerant grasses.


Strawberries For The Home Garden, Michael Pace, Jerry Goodspeed, Adrian Hinton, Shawn Olsen 2017 Utah State University

Strawberries For The Home Garden, Michael Pace, Jerry Goodspeed, Adrian Hinton, Shawn Olsen

Michael Pace

No abstract provided.


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