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Available Nitrogen And Denitrification In Soil Altered By Ground Cover And Nutrient Source In An Organic Apple Orchard, Jade Nicole Ford 2015 University of Arkansas, Fayetteville

Available Nitrogen And Denitrification In Soil Altered By Ground Cover And Nutrient Source In An Organic Apple Orchard, Jade Nicole Ford

Theses and Dissertations

A shift in public demand towards more organic and locally produced fruit and vegetables has been occurring across the United States in recent years. A common practice in organic fruit production is the application of organic ground covers to supply nutrients while enhancing other soil properties. A need for research exists in the southern region of the U.S. examining the effects of regionally applicable ground cover and nutrient management on nitrogen availability and the microbial community to provide information to organic farmers in the region. Two studies were conducted to determine how 12 treatment combinations of four ground covers ...


Applying Molecular And Phenotypic Tools To Characterize Flesh Texture And Acidity Traits In The Arkansas Peach Breeding Program And Understanding The Crispy Texture In The Arkansas Blackberry Breeding Program, Alejandra Andrea Salgado Rojas 2015 University of Arkansas, Fayetteville

Applying Molecular And Phenotypic Tools To Characterize Flesh Texture And Acidity Traits In The Arkansas Peach Breeding Program And Understanding The Crispy Texture In The Arkansas Blackberry Breeding Program, Alejandra Andrea Salgado Rojas

Theses and Dissertations

Quantitative trait loci (QTL) utilizing a pedigree-based analysis (PBA) approach was performed in the peach breeding program for the first time. The pedigree consisted of seven-F1 populations, their parents, ancestors, and cultivars. Flesh firmness and titratable acidity (TA) were examined in 2011, 2012, and 2013. For TA, a consistent and strong QTL was identified on the proximal end of linkage group (LG) 5 of the peach genome. For flesh firmness, two QTLs were located on LG 4. The first QTL was located on the chromosomal region where the slow-melting flesh (SMF) DNA test was identified, and the second QTL was ...


The Enhancement Of Wild Bees (Hymenoptera: Apoidea) For Pollination Security, Eric M. Venturini 2015 University of Maine

The Enhancement Of Wild Bees (Hymenoptera: Apoidea) For Pollination Security, Eric M. Venturini

Electronic Theses and Dissertations

The acreage of pollinator-dependent crops continues to expand across the globe. Simultaneously, honey bee hives – an annually rented commodity that growers rely on – are more expensive every year and in some cases, scarce. In response, pollinator-dependent growers seek alternative pollinators. One approach is installing bee pasture on farms, a strategy that enables systems-based farmers to become in-situ farm-scale habitat managers. This thesis first presents a review of the literature on bee pasture plantings and provides a brief overview of some methods for assessing their impacts on the pollinator community. There are three major gaps in current bee pasture research. First ...


Mangiferin As A Biomarker For Mango Anthracnose Resistance, Herma Pierre 2015 Department of Earth and Environment

Mangiferin As A Biomarker For Mango Anthracnose Resistance, Herma Pierre

FIU Electronic Theses and Dissertations

Mangos (Mangifera indica L.) are tropical/subtropical fruits belonging to the plant family Anacardiaceae. Anthracnose is the most deleterious disease of mango both in the field and during postharvest handling. It is most commonly caused by the Colletotrichum gloeosporioides complex. Mangiferin, a xanthanoid compound found in at least twelve plant families worldwide (Luo et al., 2012), is present in large amounts of the leaves and edible mangos. Even though this compound plays a pivotal role in the plant’s defense against biotic and abiotic stressors, no correlations been made between the compound and mango anthracnose resistance.

Mangos were collected, grouped ...


Accessing Chilling Conditions For Perennial Fruit Crop Production In Kentucky, Yao Xue 2015 Western Kentucky University

Accessing Chilling Conditions For Perennial Fruit Crop Production In Kentucky, Yao Xue

Masters Theses & Specialist Projects

Temperate Region fruit and nut trees, and many other perennial plants, require cool winter temperatures (chilling hours) to ensure leaf and flower bud production in the following season. Temperate Regions are characterized by variable winter and spring temperatures. Failure of meeting sufficient chilling requirement results in deformed fruits, unequal maturation, and other plant deformities, thereby reducing quality and yields. Chilling requirements are expressed as number of accumulated hours within a range of approximately 32º to 45ºF or 0º to 7.2ºC. These requirements are specific for level of temperature, length of temperature period, and species and cultivar of plants. Information ...


Historical Common Names Of Great Plains Plants, With Scientific Names Index. Volume Ii: Scientific Names Index, Elaine Nowick 2015 University of Nebraska-Lincoln

Historical Common Names Of Great Plains Plants, With Scientific Names Index. Volume Ii: Scientific Names Index, Elaine Nowick

Zea E-Books Collection

Containing thousands of entries of both vernacular and scientific names of Great Plains plants, the literature that informs this exhaustive listing spans nearly 300 years. Author Elaine Nowick has drawn from sources as diverse as Linnaeus, Lewis and Clark, and local university extension publications to compile the gamut of practical, and often fanciful, common plant names used over the years. Each common name is accompanied by a definitive scientific name with references and authority information. Interspersed with scientifically-correct botanical line drawings, the entries are written in standard ICBN format, making this a useful volume for scholars as well as lay ...


Historical Common Names Of Great Plains Plants, With Scientific Names Index. Volume I: Common Names, Elaine Nowick 2015 University of Nebraska-Lincoln

Historical Common Names Of Great Plains Plants, With Scientific Names Index. Volume I: Common Names, Elaine Nowick

Zea E-Books Collection

Containing thousands of entries of both vernacular and scientific names of Great Plains plants, the literature that informs this exhaustive listing spans nearly 300 years. Author Elaine Nowick has drawn from sources as diverse as Linnaeus, Lewis and Clark, and local university extension publications to compile the gamut of practical, and often fanciful, common plant names used over the years. Each common name is accompanied by a definitive scientific name with references and authority information. Interspersed with scientifically-correct botanical line drawings, the entries are written in standard ICBN format, making this a useful volume for scholars as well as lay ...


Assessment Of Resistance Management Education And Experience Of Educators And Growers In The Northeast, Hilary A. Sandler, Laura McDermott, Katherine Ghantous, Dahlia Medeiros 2015 University of Massachusetts - Amherst

Assessment Of Resistance Management Education And Experience Of Educators And Growers In The Northeast, Hilary A. Sandler, Laura Mcdermott, Katherine Ghantous, Dahlia Medeiros

Cranberry Station Resistance Management

No abstract provided.


Review Of A Garden Of Marvels: How We Discovered That Flowers Have Sex, Leaves Eat Air, And Other Secrets Of Plants, By Ruth Kassinger, R. F. Diffendal Jr. 2015 University of Nebraska-Lincoln

Review Of A Garden Of Marvels: How We Discovered That Flowers Have Sex, Leaves Eat Air, And Other Secrets Of Plants, By Ruth Kassinger, R. F. Diffendal Jr.

Robert F. Diffendal, Jr., Publications

Until I read Kassinger’s book I clearly did not have the historical perspective necessary to appreciate the incredible lives of plants and how botanists have come to their present understandings of same. Kassinger, a gardener by avocation, cut out most of the jargon, defined terms that she does use, and wrote simple and compelling tales of the histories of discoveries about the various parts of plants and how those parts work together for the benefit of the plant and, ultimately, for our benefit.

[This] is a book that any gardener or other interested person with a modest background in ...


Assessing Net Returns To Blueberry Production Using A Decision Support Tool, Sokha Sok 2014 University of Arkansas, Fayetteville

Assessing Net Returns To Blueberry Production Using A Decision Support Tool, Sokha Sok

Theses and Dissertations

The purpose of this study was to develop and assess the profitability of four highbush blueberry farming systems in the south: organic field production, conventional field production, organic high tunnel production and conventional high tunnel production. Four baseline budget scenarios, one for each system, are developed for a 15 year production period. The results suggest that under expected production and price conditions for Northwest Arkansas, while all four production systems generated positive present value of net returns, the conventional field production produced the highest present value of net returns across the 15 years. The breakeven years of production were 7 ...


An Economic Analysis Of Wild Bee Pollination In Lowbush Blueberry Production, Francis A. Drummond 2014 Principal Investigator; University of Maine, Orono

An Economic Analysis Of Wild Bee Pollination In Lowbush Blueberry Production, Francis A. Drummond

University of Maine Office of Research Administration: Grant Reports

The purpose of this project is to determine the relative economic values of wild bee pollinators and commercial honeybees in lowbush blueberry production for individual Maine farms. The lowbush blueberry requires insect pollination in order to set fruit. Most farmers rent colonies of the non-native honeybee for pollination services, but wild, native bees are also effective pollinators. This project aims to provide growers with the means to assess the pollination needs of individual fields and to understand the levels of pollination possible if honeybees are not available. In order to achieve these goals, the relative abundance and species diversity of ...


Production, Marketing, And Handling Practices To Export Mcintosh Apples To Central American Markets, Mildred L. Alvarado Herrera 2014 University of Massachusetts Amherst

Production, Marketing, And Handling Practices To Export Mcintosh Apples To Central American Markets, Mildred L. Alvarado Herrera

Doctoral Dissertations

Latin America offers a marketing opportunity for fresh produce, since many countries are entering into global integration and international trade as part of their portfolio of economic growth. However, to take full advantage of these opportunities, many questions associated with the implementation of marketing approaches, fresh produce quality retention, and profitability need be answered before undertaking this business opportunity. When it comes to developing countries such as those in Central America, and in particular - El Salvador, Honduras, and Guatemala - language, culture, technology, competitiveness, regulations, poverty, and other barriers become challenges to enter these markets successfully. In order to better understand ...


Influence Of Aba On Calcium Binding In Tomato Fruit And Its Impact On Fruit Texture, Kendall Cressman 2014 University of Tennessee - Knoxville

Influence Of Aba On Calcium Binding In Tomato Fruit And Its Impact On Fruit Texture, Kendall Cressman

Chancellor’s Honors Program Projects

No abstract provided.


Application Of Spatial Modeling Tools To Predict Native Bee Abundance In Maine's Lowbush Blueberries, Shannon J. Chapin 2014 The University of Maine

Application Of Spatial Modeling Tools To Predict Native Bee Abundance In Maine's Lowbush Blueberries, Shannon J. Chapin

Electronic Theses and Dissertations

Non-native honeybees historically have been used to pollinate many crops throughout the United States, however, recent population declines have revealed the need for a more sustainable pollination plan. Native bees are a natural resource that can play an important role in pollination. I used spatial modeling tools to evaluate relationships between landscape factors and native bee abundance, with a focus on the wild native bees that pollinate Maine’s lowbush blueberries. I applied the InVEST Crop Pollination ecosystem spatial modeling tool, which predicts pollinator abundance based on available floral resources and nesting habitat, to the Downeast Maine region. The InVEST ...


Growing Jujubes In Western Australia, Rachelle Johnstone 2014 Department of Agriculture and Food, Western Australia

Growing Jujubes In Western Australia, Rachelle Johnstone

Research Reports

The Chinese jujube (Ziziphus jujuba Mill.) is one of the most important fruit crops in China and has been commonly used as a traditional Chinese medicine and food for thousands of years. The jujube is widely grown in China with cultivation records going back more than 3000 years and can also be found in neighbouring countries. The jujube is a medium-sized tree, growing 7–10 metres high. The tree has shiny deciduous foliage and produces a fruit that is known as a drupe. The fruit varies in size depending on the cultivar, and it has a thin, dark red skin ...


Effects Of Row Cover Removal Timing In Organic Muskmelon, Zachary Torres, Jean C. Batzer, Mark L. Gleason 2014 Iowa State University

Effects Of Row Cover Removal Timing In Organic Muskmelon, Zachary Torres, Jean C. Batzer, Mark L. Gleason

Iowa State Research Farm Progress Reports

Muskmelons are difficult to grow using organic practices because of bacterial wilt and the cucumber beetle that vectors the disease. Row covers can be placed over muskmelon transplants and then removed at anthesis (the period at which 50% of plants have female flowers). In addition to shielding muskmelons from bacterial wilt, row covers also can protect plants from early season frost, wind damage, and fungal diseases. However, the intensive labor needs of row-cover deployment have limited their use to small fields on small-scale farms


Effects Of Scaling Up Row-Cover Removal Timing In Conventionally Grown Muskmelon, Zachary Torres, Jean C. Batzer, Mark L. Gleason 2014 Iowa State University

Effects Of Scaling Up Row-Cover Removal Timing In Conventionally Grown Muskmelon, Zachary Torres, Jean C. Batzer, Mark L. Gleason

Iowa State Research Farm Progress Reports

Row covers are most often placed manually over muskmelon transplants and then removed at anthesis (the period at which 50% of plants have female flowers). Row covers protect muskmelons from bacterial wilt (vectored by cucumber beetles), early season frost, wind damage, and fungal diseases. However, the intensive labor needs of row cover deployment have limited their use to small fields on small-scale farms. In order to expand the use of row covers to large-scale farms, we are assessing the possibilities of using simple machinery to assist in the deployment and retrieval of the row covers.


Effects Of Surfactant Combinations With Captan For Control Of Apple Fruit Rots And Russeting, Hafizi Bin Rosli, Mark L. Gleason, Jean C. Batzer 2014 Iowa State University

Effects Of Surfactant Combinations With Captan For Control Of Apple Fruit Rots And Russeting, Hafizi Bin Rosli, Mark L. Gleason, Jean C. Batzer

Iowa State Research Farm Progress Reports

Surfactants are adjuvants that lower the surface tension between two liquids or between a liquid and a solid. Surfactants can improve efficacy of fungicides on crops and could reduce the rate and number of fungicide applications. Combining fungicides and surfactants may increase the efficacy of existing control options. However, since some fungicide-surfactant combinations have been reported to cause phytotoxicity, these compounds should be screened. This is the first year of a two-year study to evaluate commercial surfactants+captan for control of apple fruit rot and phytotoxicity.


Peach And Pear Cultivar Trial, Patrick O'Malley, Nicholas P. Howell 2014 Iowa State University

Peach And Pear Cultivar Trial, Patrick O'Malley, Nicholas P. Howell

Iowa State Research Farm Progress Reports

As local food production has increased in Iowa, there is renewed interest in tree fruit such as peach and pear. The purpose of this multi-year study is to compare the performance of peach and pear cultivars under soil and environmental conditions at the Horticulture Research Station, Ames, Iowa.


The Effects Of Temperature And Light In High Tunnel Primocane Red Raspberry Production—Year 2, Leah B. Riesselman, Gail R. Nonnecke 2014 Iowa State University

The Effects Of Temperature And Light In High Tunnel Primocane Red Raspberry Production—Year 2, Leah B. Riesselman, Gail R. Nonnecke

Iowa State Research Farm Progress Reports

Climatic factors found in tunnels of the Midwest may show negative effects to primocane growth and development of raspberry. Researchers have found that as air and root-zone temperature exceed 24°C (75.2°F) and 16°C (60.8°F), respectively, the following plant development occurs: decrease in water uptake by primocanes, premature dormancy of lateral and axillary buds, delayed time to fruit ripening, and reduced fruit quality and weight. In addition to temperature, high light (irradiance) causes a decline of fruit yield and quality. Premature dormancy and delayed time-to-flowering occur when irradiance exceed 600 μmol·mˉÇs ...


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