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Articles 1711 - 1740 of 4948

Full-Text Articles in Horticulture

First Case Of Glufosinate-Resistant Rigid Ryegrass (Lolium Rigidum Gaud.) In Greece, Ilias S. Travlos, Nikolina Cheimona, Rafael De Prado, Amit J. Jhala, Demosthenis Chachalis, Eleni Tani Jan 2018

First Case Of Glufosinate-Resistant Rigid Ryegrass (Lolium Rigidum Gaud.) In Greece, Ilias S. Travlos, Nikolina Cheimona, Rafael De Prado, Amit J. Jhala, Demosthenis Chachalis, Eleni Tani

Department of Agronomy and Horticulture: Faculty Publications

Repeated applications of the same herbicide(s), which are characterized by the same mode of action, increase selection pressure, which in turn favours the evolution of herbicide-resistant weeds. Glufosinate is a broad-spectrum non-selective herbicide being used for weed control for many years around the world. Rigid ryegrass (Lolium rigidum Gaud.) is an economically important grass weed in Greece. Recent complaints by growers about control failure of rigid ryegrass with glufosinate require further investigation and have been the basis of this study. The objectives of this study were to confirm the existence of glufosinate-resistant L. rigidum in Greece and evaluate the …

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Empowerment And Tech Adoption: Introducing The Treadle Pump Triggers Farmers’ Innovation In Eastern Ethiopia, Shimelis Beyene, Teshome H. Regassa, Belaineh Legesse, Martha Mamo, Tsegaye Tadesse Jan 2018

Empowerment And Tech Adoption: Introducing The Treadle Pump Triggers Farmers’ Innovation In Eastern Ethiopia, Shimelis Beyene, Teshome H. Regassa, Belaineh Legesse, Martha Mamo, Tsegaye Tadesse

Department of Agronomy and Horticulture: Faculty Publications

In 2013, thirty-eight treadle pumps (TPs) were installed as low-cost technology introduction for small-scale irrigation in eastern Ethiopia. This pilot project also trained six farmers on tube well excavation, as well as the installation and maintenance of pumps. In June 2015, researchers visited nine of the thirty-eight TP villages and found only two TPs functioning as originally installed. The rest were replaced with a new technology developed by the trained farmers. Farmers, empowered by training, gained more control in developing technology options tailored to local needs and conditions of their communities. Adopters of the new technology stated that the limited …

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Beyond The Plot: Technology Extrapolation Domains For Scaling Out Agronomic Science, Juan I. Rattalino Edreira, Kenneth G. Cassman, Zvi Hochman, Martin K. Van Ittersum, Lenny Van Bussel, Lieven Claessens, Patricio Grassini Jan 2018

Beyond The Plot: Technology Extrapolation Domains For Scaling Out Agronomic Science, Juan I. Rattalino Edreira, Kenneth G. Cassman, Zvi Hochman, Martin K. Van Ittersum, Lenny Van Bussel, Lieven Claessens, Patricio Grassini

Department of Agronomy and Horticulture: Faculty Publications

Ensuring an adequate food supply in systems that protect environmental quality and conserve natural resources requires productive and resource-efficient cropping systems on existing farmland.Meeting this challenge will be difficult without a robust spatial framework that facilitates rapid evaluation and scaling-out of currently available and emerging technologies. Here we develop a global spatial framework to delineate ‘technology extrapolation domains’ based on key climate and soil factors that govern crop yields and yield stability in rainfed crop production. The proposed framework adequately represents the spatial pattern of crop yields and stability when evaluated over the data-rich US Corn Belt. It also facilitates …

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Contents, Discovery Editors Jan 2018

Contents, Discovery Editors

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

No abstract provided.

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Letter From The Dean, Deacue Fields Jan 2018

Letter From The Dean, Deacue Fields

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

No abstract provided.

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Discovery: The Student Journal Of Dale Bumpers College Of Agricultural, Food And Life Sciences - Volume 19 2018, Several Authors Jan 2018

Discovery: The Student Journal Of Dale Bumpers College Of Agricultural, Food And Life Sciences - Volume 19 2018, Several Authors

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

No abstract provided.

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New For Discovery: Scholarworks@Uark, Discovery Editors Jan 2018

New For Discovery: Scholarworks@Uark, Discovery Editors

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

No abstract provided.

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Ripeness Attributes Of Arkansas-Grown Peaches And Nectarines At Harvest And During Postharvest Storage, Mary C. Siebenmorgen, Renee T. Threlfall, Margaret Worthington Jan 2018

Ripeness Attributes Of Arkansas-Grown Peaches And Nectarines At Harvest And During Postharvest Storage, Mary C. Siebenmorgen, Renee T. Threlfall, Margaret Worthington

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

Since peaches and nectarines are a valued fresh-market crop worldwide, evaluating postharvest potential helps determine feasibility for commercial markets. The ripeness attributes of 10 peach and nectarine genotypes were evaluated at harvest (day 0) and after 7 and 14 d storage at 4° C. The fruit was hand harvested at tree ripeness (ripened on the tree) and commercial ripeness (ripened during storage). The attributes of the tree-ripened fruit and commercially-ripened fruit varied at harvest and included chlorophyll (0.04-0.86 abs), peach weight (132-264 g), soluble solids (7.23-12.57%), pH (3.18-4.66), titratable acidity (0.16-1.21%), and flesh firmness (6.92-35.72 N). In general, tree-ripened fruit …

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Application Of Machine Learning Methodologies For Predicting Corn Economic Optimal Nitrogen Rate, Zhisheng Qin, D. Brenton Myers, Curtis J. Ransom, Newell R. Kitchen, Sang-Zi Liang, James J. Camberato, Paul R. Carter, Richard B. Ferguson, Fabian G. Fernandez, David W. Franzen, Carrie A. M. Laboski, Brad D. Malone, Emerson D. Nafziger, John E. Sawyer, John F. Shanahan Jan 2018

Application Of Machine Learning Methodologies For Predicting Corn Economic Optimal Nitrogen Rate, Zhisheng Qin, D. Brenton Myers, Curtis J. Ransom, Newell R. Kitchen, Sang-Zi Liang, James J. Camberato, Paul R. Carter, Richard B. Ferguson, Fabian G. Fernandez, David W. Franzen, Carrie A. M. Laboski, Brad D. Malone, Emerson D. Nafziger, John E. Sawyer, John F. Shanahan

Department of Agronomy and Horticulture: Faculty Publications

Determination of in-season N requirement for corn (Zea mays L.) is challenging due to interactions of genotype, environment, and management. Machine learning (ML), with its predictive power to tackle complex systems, may solve this barrier in the development of locally based N recommendations. The objective of this study was to explore application of ML methodologies to predict economic optimum nitrogen rate (EONR) for corn using data from 47 experiments across the US Corn Belt. Two features, a water table adjusted available water capacity (AWCwt) and a ratio of in-season rainfall to AWCwt (RAWCwt), were …

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Supersweet Sweet Corn Cultivar Evaluation For Northern Indiana, 2017, Elizabeth Maynard, Erin A. Bluhm Jan 2018

Supersweet Sweet Corn Cultivar Evaluation For Northern Indiana, 2017, Elizabeth Maynard, Erin A. Bluhm

Midwest Vegetable Trial Reports

This paper reports on fifteen bicolor, two yellow, and two white supersweet sweet corn entries that were evaluated at the Pinney-Purdue Agricultural Center in Wanatah, Indiana.

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Midwest Vegetable Trial Report For 2017, Elizabeth Maynard, Brad R. Bergefurd, Wenjing Guan, Petrus Langenhoven Jan 2018

Midwest Vegetable Trial Report For 2017, Elizabeth Maynard, Brad R. Bergefurd, Wenjing Guan, Petrus Langenhoven

Midwest Vegetable Trial Reports

This is a compilation of 19 research trial reports from six land-grant universities in the Midwestern United States. Crops include green beans, cantaloupe, cucumber, ornamental corn, pepper, potato, pumpkin, butternut squash, sweet corn, tomato, and watermelon. Several crops were evaluated in high tunnels or hoophouses. Most trials evaluated different cultivars or varieties. One report addressed specific growing practices: plant spacing for sweet corn.

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Green Bean Variety Evaluation, 2017, John Strang, Chris Smigell, John Snyder Jan 2018

Green Bean Variety Evaluation, 2017, John Strang, Chris Smigell, John Snyder

Midwest Vegetable Trial Reports

No abstract provided.

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Southern Illinois Ornamental Corn Variety Trial, 2016-2017, Bronwyn Aly, Nathan Johanning Jan 2018

Southern Illinois Ornamental Corn Variety Trial, 2016-2017, Bronwyn Aly, Nathan Johanning

Midwest Vegetable Trial Reports

No abstract provided.

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2017 Evaluation Of Hybrid Bell Pepper Varieties For High Tunnel Production In Kansas, Kimberly L. Oxley, Cary L. Rivard Jan 2018

2017 Evaluation Of Hybrid Bell Pepper Varieties For High Tunnel Production In Kansas, Kimberly L. Oxley, Cary L. Rivard

Midwest Vegetable Trial Reports

No abstract provided.

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Bell Pepper Cultivar Evaluation, 2017, Chris Smigell, John Strang, John Snyder Jan 2018

Bell Pepper Cultivar Evaluation, 2017, Chris Smigell, John Strang, John Snyder

Midwest Vegetable Trial Reports

This is a compilation of 18 research trial reports from four land-grant universities in the Midwestern United States. Crops include cantaloupe, pickling cucumber, pepper, potato, pumpkin, summer squash and zucchini, sweet corn, tomato, and watermelon. Somecrops were evaluated in high tunnels or hoophouses. Most trials evaluated different cultivars or varieties. One report addressed plant spacing for sweet corn and one addressed soil block for production of tomato seedlings. A list of vegetable seed sources and a list of other online sources of vegetable trial reports are also included.

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Watermelon Variety Trials In Southwest Indiana ̶ 2017, Wenjing Guan, Dan Egel, Dennis Nowaskie, Alex Plummer Jan 2018

Watermelon Variety Trials In Southwest Indiana ̶ 2017, Wenjing Guan, Dan Egel, Dennis Nowaskie, Alex Plummer

Midwest Vegetable Trial Reports

No abstract provided.

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A Message From The Department Head Of Horticulture And Food Science, Wayne Mackey Jan 2018

A Message From The Department Head Of Horticulture And Food Science, Wayne Mackey

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

No abstract provided.

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Evaluating Consumer Sensory And Composition Attributes Of Arkansas-Grown Fresh-Market Blackberries, Aubrey N. Dunteman, Renee T. Threlfall, John R. Clark, Margaret L. Worthington Jan 2018

Evaluating Consumer Sensory And Composition Attributes Of Arkansas-Grown Fresh-Market Blackberries, Aubrey N. Dunteman, Renee T. Threlfall, John R. Clark, Margaret L. Worthington

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

Blackberries are grown worldwide for commercial fresh markets. Three Arkansas-grown fresh-market blackberry genotypes (‘Natchez’, ‘Ouachita’, and A-2418) were evaluated for consumer sensory and compositional attributes at the University of Arkansas Food Science Department, Fayetteville. The compositional attributes of the blackberries were within an acceptable range for commercial markets (soluble solids=8.20-11.90%, pH=2.79-3.18, titratable acidity=1.09-1.32%). In terms of soluble solids to titratable acidity ratio, ‘Ouachita’ (10.92) had the highest ratio, followed by ‘Natchez’ (8.93) and A-2418 (6.25). A consumer sensory panel (n=80) evaluated fresh-market blackberry attributes using a 9-point hedonic scale for overall impression, overall flavor, sweetness, and sourness and a 5-point …

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Tomato Cultivar Evaluation In High Tunnels, Northern Indiana, 2017, Elizabeth Maynard, Erin A. Bluhm Jan 2018

Tomato Cultivar Evaluation In High Tunnels, Northern Indiana, 2017, Elizabeth Maynard, Erin A. Bluhm

Midwest Vegetable Trial Reports

Tomatoes are a common crop grown in unheated greenhouses, commonly called high tunnels. Production in these structures has increased in recent years. This trial was conducted to evaluate varieties for their performance as a summer-harvested crop in soil-based high tunnel production systems. Five hybrid determinate varieties or line, one hybrid indeterminate, and one open-pollinated indeterminate variety were compared for yield, earliness, fruit size, and quality.

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Muskmelon Variety Trial In Southwest Indiana ̶ 2017, Wenjing Guan, Dan Egel, Dennis Nowaskie, Alex Plummer Jan 2018

Muskmelon Variety Trial In Southwest Indiana ̶ 2017, Wenjing Guan, Dan Egel, Dennis Nowaskie, Alex Plummer

Midwest Vegetable Trial Reports

No abstract provided.

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Russet Potato Evaluation In Southwest Michigan, Ron Goldy, Kyle Ferrantella Jan 2018

Russet Potato Evaluation In Southwest Michigan, Ron Goldy, Kyle Ferrantella

Midwest Vegetable Trial Reports

No abstract provided.

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Pumpkin Cultivar Performance Trial Grown In Southern Ohio 2017, Brad R. Bergefurd Jan 2018

Pumpkin Cultivar Performance Trial Grown In Southern Ohio 2017, Brad R. Bergefurd

Midwest Vegetable Trial Reports

No abstract provided.

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2017 Butternut Squash Variety Trial In Strip-Tilled Rye Mulch, Ben Phillips Jan 2018

2017 Butternut Squash Variety Trial In Strip-Tilled Rye Mulch, Ben Phillips

Midwest Vegetable Trial Reports

No abstract provided.

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Plant Spacing Influence On Sweet Corn Yield And Quality, Ron Goldy Jan 2018

Plant Spacing Influence On Sweet Corn Yield And Quality, Ron Goldy

Midwest Vegetable Trial Reports

No abstract provided.

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Fresh Market And Saladette Tomato Cultivar Evaluation In Southwest Michigan, 2017, Ron Goldy, Kyle Ferrantella Jan 2018

Fresh Market And Saladette Tomato Cultivar Evaluation In Southwest Michigan, 2017, Ron Goldy, Kyle Ferrantella

Midwest Vegetable Trial Reports

No abstract provided.

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2016-17 Pumpkin Cultivar Evaluations In West Virginia, Lewis Jett Jan 2018

2016-17 Pumpkin Cultivar Evaluations In West Virginia, Lewis Jett

Midwest Vegetable Trial Reports

No abstract provided.

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Evaluation Of Spinach For High Tunnel Production, Lewis Jett Jan 2018

Evaluation Of Spinach For High Tunnel Production, Lewis Jett

Midwest Vegetable Trial Reports

No abstract provided.

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Gene Expression Profiling Of Iron Deficiency Chlorosis Sensitive And Tolerant Soybean Indicates Key Roles For Phenylpropanoids Under Alkalinity Stress, Brian M. Waters, Keenan Amundsen, George L. Graef Jan 2018

Gene Expression Profiling Of Iron Deficiency Chlorosis Sensitive And Tolerant Soybean Indicates Key Roles For Phenylpropanoids Under Alkalinity Stress, Brian M. Waters, Keenan Amundsen, George L. Graef

Department of Agronomy and Horticulture: Faculty Publications

Alkaline soils comprise 30% of the earth and have low plant-available iron (Fe) concentration, and can cause iron deficiency chlorosis (IDC). IDC causes soybean yield losses of $260 million annually. However, it is not known whether molecular responses to IDC are equivalent to responses to low iron supply. IDC tolerant and sensitive soybean lines provide a contrast to identify specific factors associated with IDC.We used RNA-seq to compare gene expression under combinations of normal pH (5.7) or alkaline pH (7.7, imposed by 2.5mM bicarbonate, or pH 8.2 imposed by 5mM bicarbonate) and normal (25μM) or low (1μM) iron conditions from …

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A Transcriptome‑Snp‑Derived Linkage Map Of Apios Americana (Potato Bean) Provides Insights About Genome Re‑Organization And Synteny Conservation In The Phaseoloid Legumes, Jugpreet Singh, Scott R. Kalberer, Vikas Belamkar, Teshale Assefa, Matthew N. Nelson, Andrew D. Farmer, William J. Blackmon, Steven B. Cannon Jan 2018

A Transcriptome‑Snp‑Derived Linkage Map Of Apios Americana (Potato Bean) Provides Insights About Genome Re‑Organization And Synteny Conservation In The Phaseoloid Legumes, Jugpreet Singh, Scott R. Kalberer, Vikas Belamkar, Teshale Assefa, Matthew N. Nelson, Andrew D. Farmer, William J. Blackmon, Steven B. Cannon

Department of Agronomy and Horticulture: Faculty Publications

Apios (Apios americana; “apios”), a tuberous perennial legume in the Phaseoleae tribe, was widely used as a food by Native Americans. Work in the last 40 years has led to several improved breeding lines. Aspects of the pollination biology (complex floral structure and tripping mechanism) have made controlled crosses difficult, and the previous reports indicated that the plant is likely primarily an outcrosser. We used a pseudo-testcross strategy to construct a genetic map specific to the maternal parent. The map was built using single-nucleotide polymorphism markers identified by comparing the expressed sequences of individuals in the mapping population …

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Enhancing Resolution Of Natural Methylome Reprogramming Behavior In Plants, Robersy Sanchez, Xiaodong Yang, Hardik Kundariya, Jose R. Barreras, Yashitola Wamboldt, Sally A. Mackenzie Jan 2018

Enhancing Resolution Of Natural Methylome Reprogramming Behavior In Plants, Robersy Sanchez, Xiaodong Yang, Hardik Kundariya, Jose R. Barreras, Yashitola Wamboldt, Sally A. Mackenzie

Department of Agronomy and Horticulture: Faculty Publications

We have developed a novel methylome analysis procedure, Methyl-IT, based on information thermodynamics and signal detection. Methylation analysis involves a signal detection problem, and the method was designed to discriminate methylation regulatory signal from background noise induced by thermal fluctuations. Comparison with three commonly used programs and various available datasets to furnish a comparative measure of resolution by each method is included. To confirm results, methylation analysis was integrated with RNAseq and network enrichment analyses. Methyl-IT enhances resolution of genome methylation behavior to reveal network-associated responses, offering resolution of gene pathway influences not attainable with previous methods.

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