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

No abstract provided.

The Political Preference Of Arkansas Farmers And Ranchers, Rachel J. Barry, Donna L. Graham

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

Access to information is critical to improving production efficiency, but little is known about how farmers are informed on the policy or issues influencing programs related to farming. This research sought to determine the sources of communication used by farmers and ranchers to form opinions about agricultural policy and candidates, identify the issues important in voting, and their level of participation in the political process. Face-to-face interaction was the preferred form of communication in farm organization meetings, with friends, or farm agencies. Magazines were the preferred source of print communication, and university/extension websites were preferred for internet sources. Broadcast media …

Characterization Of Jasmine Rice Cultivars Grown In The United States, Anastasia K. Mills, Ya-Jane Wang

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

Jasmine rice from Thailand accounts for about 60% to 70% of U.S. imported rice, primarily due to its preference by ethnic Asians as well as the general American population. Recently new U.S. jasmine rice cultivars have been developed independently at three rice research stations in Arkansas, California, and Louisiana, but their properties have not been characterized. The objective of this research was to characterize and compare the physical appearance, chemical composition, thermal and pasting properties, cooked rice texture, and starch structures of the newly developed U.S. jasmine rice from Arkansas, California, and Louisiana, to be compared with jasmine rice samples …

Using Bioenergetics And Radar-Derived Bird Abundance To Assess The Impact Of A Blackbird Roost On Seasonal Sunflower Damage, Bonne A. Clark, Page E. Klug, Phillip M. Stepanian, Jeffrey F. Kelly

Human–Wildlife Interactions

Methods aimed at reducing avian damage to agricultural crops are routinely implemented in situations where efficacy can be assessed by quantifying blackbird (Icteridae) abundance relative to environmental variables and extrapolating to ensuing crop damage. Concomitantly, Weather Surveillance Radar (WSR) data may have potential to enhance crop damage mitigation through improved monitoring of nuisance wildlife populations. We used WSR to derive daily abundance estimates of blackbirds at a fall roost in North Dakota, USA from 2012 to 2019. We integrated these estimates with previously developed bioenergetics-economic models to estimate local sunflower (Helianthus annuus) damage. The greatest losses usually occurred …

Allelic Variation In Rice Fertilization Independent Endosperm 1 Contributes To Grain Width Under High Night Temperature Stress, Balpreet K. Dhatt, Puneet Paul, Jaspreet Sandhu, Waseem Hussain, Larissa Irvin, Feiyu Zhu, Maria Arlene Adviento-Borbe, Argelia Lorence, Paul Staswick, Hongfeng Yu, Gota Morota, Harkamal Walia

Department of Agronomy and Horticulture: Faculty Publications

A higher minimum (night-time) temperature is considered a greater limiting factor for reduced rice yield than a similar increase in maximum (daytime) temperature. While the physiological impact of high night temperature (HNT) has been studied, the genetic and molecular basis of HNT stress response remains unexplored.

We examined the phenotypic variation for mature grain size (length and width) in a diverse set of rice accessions under HNT stress. Genome-wide association analysis identified several HNT-specific loci regulating grain size as well as loci that are common for optimal and HNT stress conditions.

A novel locus contributing to grain width under HNT …

Voxel Carving-Based 3d Reconstruction Of Sorghum Identifies Genetic Determinants Of Light Interception Efficiency, Mathieu Gaillard, Chenyong Miao, James Schnable, Bedrich Benes

Department of Agronomy and Horticulture: Faculty Publications

Changes in canopy architecture traits have been shown to contribute to yield increases. Optimizing both light interception and light interception efficiency of agricultural crop canopies will be essential to meeting the growing food needs. Canopy architecture is inherently three-dimensional (3D), but many approaches to measuring canopy architecture component traits treat the canopy as a two-dimensional (2D) structure to make large scale measurement, selective breeding, and gene identification logistically feasible. We develop a high throughput voxel carving strategy to reconstruct 3D representations of sorghum from a small number of RGB photos. Our approach builds on the voxel carving algorithm to allow …

Genome-Wide Identification And Analysis Of Heterotic Loci In Three Maize Hybrids, Hongjun Liu, Qin Wang, Mengjiao Chen, Yahui Ding, Xuerong Yang, Jie Liu, Xiaohan Li, Congcong Zhou, Qilin Tian, Yiqi Lu, Danlin Fan, Junpeng Shi, Lin Zhang, Congbin Kang, Mingfei Mingfei Sun, Fangyuan Li, Yujian Wu, Yongzhong Zhang, Baoshen Liu, Xiang Yu Zhao, Qi Feng, Jinliang Yang, Bin Han, Jinsheng Lai, Xian Sheng Zhang, Xuehui Huang

Department of Agronomy and Horticulture: Faculty Publications

Heterosis, or hybrid vigour, is a predominant phenomenon in plant genetics, serving as the basis of crop hybrid breeding, but the causative loci and genes underlying heterosis remain unclear in many crops. Here, we present a large-scale genetic analysis using 5360 offsprings from three elite maize hybrids, which identifies 628 loci underlying 19 yield-related traits with relatively high mapping resolutions. Heterotic pattern investigations of the 628 loci show that numerous loci, mostly with complete–incomplete dominance (the major one) or overdominance effects (the secondary one) for heterozygous genotypes and nearly equal proportion of advantageous alleles from both parental lines, are the …

Cover Crops And Cover Crop Mixes: Stratification Of Biological Effects, Landon M. Gibbs

Theses and Dissertations--Plant and Soil Sciences

The potential nutrient cycling benefits from legumes (e.g. N₂-fixation) and the high biomass potential of cereal rye are well known. Further studies are warranted to evaluate bi-culture mixtures and their effects on soil nutrient stratification and microbial enzyme activity because these two properties may be differently expressed (enhanced) by legume/grass mixes. The objectives of this study were: (1) show different cover crops and cover crop mixes containing grasses and legumes differentially stratify carbon and N; (2) show the change in microbial enzyme activity in soils planted with individual cover crops relative to cover crop mixes; 3) determine the …

Using Biology To Better Inform Marestail [Conyza Canadensis (L.) Cronq.] Management, Ryan James Collins

Theses and Dissertations--Plant and Soil Sciences

The importance of sustainable weed management practices continues to grow as farmers are increasingly faced with herbicide resistant weed populations. Marestail (Conyza canadensis), also known as horseweed, is a problematic weed in soybean cropping systems that has developed resistance to multiple herbicide modes of action. A two year study was conducted in Lexington, KY, examining timing patterns of marestail emergence and different integrated weed management strategies for marestail prior to no-till soybean. Treatments contained fall and spring applied herbicides with different levels of residual activities, cover crops and combinations of the two. Additionally, yields and partial budget net …

In Pursuit Of Understanding Barrel Variation: Surveying The Lignocellulose Composition And Content Changes In Quercus Alba Barrel Staves During Cooperage And Bourbon Whiskey Maturation, Jarrad Wade Gollihue

Theses and Dissertations--Plant and Soil Sciences

Bourbon whiskey is a distilled spirit which is a uniquely American with several legal requirements including 1) the major grain in the mash is corn, 2) must be aged in a new charred white oak barrel, and 3) made in the United States of America. Kentucky is the whiskey historical home, producing most of the bourbon in the United States. Interest in whiskey has developed a need to understand more about the underlying chemistry of bourbon. The charred white oak barrel used in bourbon production is of substantial interest because the barrel has been implicated in giving American whiskey its …

Induction Of Seed Coat Darkening In Common Beans (Phaseolus Vulgaris L.) And The Association With Cooking Time After Storage, Renata C. Alvares, Helton S. Pereira, Leonardo C. Melo, Phillip N. Miklas, Patrícia G.S. Melo

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

Carioca is the most important edible dry bean (Phaseolus vulgaris L.) grown in Brazil. It represents the largest dry bean market class in the world. The seed coat of carioca beans will darken under adverse harvest conditions and with the increasing of storage time. In general, darkened seeds are associated with older seeds that suffer from prolonged cooking times. A relatively new ‘slow darkening’ trait is available in carioca that delays seed coat darkening under storage. However, its effect on cooking time is unknown. The objective of this work was to evaluate two induction methods of seed coat darkening and …

Forage Systems For The Temperate Subhumid And Semiarid Areas, John R. Hendrickson, Corey Moffet

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

No abstract provided.

Cropping System And Landscape Characteristics Influence Long-Term Grain Crop Profitability, L. S. Conway, M. A. Yost, Newell Kitchen, K. A. Sudduth, R. E. Massey, E. J. Sadler

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

Converting from standard tillage or no-tillage cropping systems to more conservation-based cropping systems that include no-tillage, cover crops, and reduced agrichemical inputs must be profitable for large-scale adoption. Therefore, research was conducted at the central Mississippi River Basin site of the USDA Long-Term Agroecosystem Research Network from 1996 to 2009 to determine how cropping systems, landscape position, and depth to claypan affected net economic return. Treatments consisted of three cropping systems {mulch-till corn (Zea mays L.)–soybean [Glycine max (L.) Merr.], MTCS; no-till corn–soybean, NTCS; no-till corn–soybean–wheat (Triticum aestivum L.) (NTCSW)–cover crop} and three landscape positions (summit, backslope, and footslope). Within …

Growing South Dakota (Winter 2020), College Of Agriculture, Food And Environmental Sciences

Growing South Dakota (Publication of the College of Agriculture, Food and Environmental Sciences)

This issue contains the SDSU Extension 2019 Annual Report

[Page] 2-3 South Dakota Animal Disease Research and Diagnostic Laboratory Ribbon Cutting Ceremony
[Page] 4 SDSU Extension
[Page] 4 From the Director of Extension Karla Trautman
[Page] 5 2019 USDA Risk Management Agency Crop Indemnities
[Page] 6-8 SDSU Extension Responds to Mother Nature in 2019
[Page] 9 Successful Energize! Conference Buoys Community Efforts in Lemmon & Beyond
[Page] 10-11 Helping Loved Ones Transition Smoothly
[Page] 12 AmeriCorps VISTA Members Expand Extension Programming
[Page] 13 South Dakota Wellness Coalitions Make Big Impacts in Small Communities [Page] 14-16 Extension Programs in Our Own …

The Public Wet Market System Of Iloilo City, Philippines, Joshua Cedric I. Carmen, Edsel Francis T. Lima, Joseph Joshua U. Te, Austin Nathaniel T. Toledo, Christine Mae D. Hernando

Journal of Public Affairs and Development

In the Philippines, public wet markets are an integral part of the country’s history, culture, and economy. Wet markets are the primary trading centers in towns all over the Philippines since the Spanish colonial times. However, with globalization, the increasing hypermarketization in Iloilo City threatens the viability of wet markets. This paper sought to find out the external environment, resources, enterprise components, and business outputs of the wet markets in Iloilo City. It also explored various local governance initiatives to assist the business growth and development of these wet markets. Using a descriptive design and interviews with 100 wet market …

Toward A Holistic Agricultural Student Recruitment Model: A National Analysis Of The Factors Affecting Students’ Decision To Pursue An Agricultural Related Degree, Antoine J. Alston, Richie Roberts, Chastity W. English

Journal of Research in Technical Careers

Currently, the agricultural industry struggles to fill positions with qualified agricultural workers. Therefore, it is critical to attract high caliber individuals to agricultural degree programs that are prepared to enter the workforce with the skills needed to navigate complex issues and problems. The purpose of this national study was to identify key factors that influence the recruitment of agriculture students at land-grant and non-land-grant universities. Using Chapman’s model of student success as our conceptual lens, we tested 66 factors identified in the literature as successful recruitment strategies for colleges of agriculture based on students’ personal characteristics as well as key …

Addressing The Gender Gap: Women’S Perceived Barriers To Pursuing Stem Careers, Marshall Swafford, Ryan Anderson

Journal of Research in Technical Careers

This national study used the Delphi method to identify perceived barriers women face in the pursuit of STEM careers. The study used a series of three web-based questionnaires. The first round of the study used a questionnaire with an open-ended question to facilitate the generation of a wide array of response categories. In round two, respondents were asked to rate the 24 perceived barriers from round one on a Likert-type scale and to make changes as necessary. In round three, respondents were asked to provide a dichotomous indication of whether they agreed or disagreed with each of the items. Consensus …

Plant-Based Diets And Covid-19: Those Who Harvest Crops Are At High Risk, Jarret S. Lovell

Animal Sentience

This commentary extends Wiebers & Feigin’s (2020) plea to adopt diets that are less dependent on animals by calling on experts and activists to work for change with regard to farm worker labor conditions. Already doing among the most dangerous jobs, farmworkers are at increased risk of COVID-19. As we increasingly transition to plant-based diets, we must all ensure that farmworkers have safe and just working conditions to meet the demands of our changing diets.

2020 Weed Science Research Report – Tan Section, Ndsu Weed Science, Dept. Of Plant Sciences

Plant Sciences Weed Science Reports

The Weed Science team at North Dakota State University conduct field research in the State of North Dakota. This specific document reports on field research conducted in 2020. It includes work on adjuvants and the management of several weeds in North Dakota.

The Role Of Topography, Soil, And Remotely Sensed Vegetation Condition Towards Predicting Crop Yield, Trenton E. Franz, Sayli Pokal, Justin P. Gibson, Yuzhen Zhou, Hamed Gholizadeh, Fatima Amor Tenorio, Daran Rudnick, Derek M. Heeren, Matthew F. Mccabe, Matteo Ziliani, Zhenong Jin, Kaiyu Guan, Ming Pan, John Gates, Brian Wardlow

School of Natural Resources: Faculty Publications

Foreknowledge of the spatiotemporal drivers of crop yield would provide a valuable source of information to optimize on-farm inputs and maximize profitability. In recent years, an abundance of spatial data providing information on soils, topography, and vegetation condition have become available from both proximal and remote sensing platforms. Given the wide range of data costs (between USD $0−50/ha), it is important to understand where often limited financial resources should be directed to optimize field production. Two key questions arise. First, will these data actually aid in better fine-resolution yield prediction to help optimize crop management and farm economics? Second, what …

Discovery: The Student Journal Of Dale Bumpers College Of Agricultural, Food And Life Sciences - Volume 21 2020, Several Authors

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

No abstract provided.

Simultaneous Cognate Epitope Recognition By Bovine Cd4 And Cd8 T Cells Is Essential For Primary Expansion Of Antigen-Specific Cytotoxic T-Cells Following Ex Vivo Stimulation With A Candidate Mycobacterium Avium Subsp. Paratuberculosis Peptide Vaccine, Gaber S. Abdellrazeq, Lindsay M. Fry, Mahmoud M. Elnaggar, J. P. Bannantine, David A. Schneider, William M. Chamberlin, Asmaa H.A. Mahmoud, Kun-Taek Park, Victoria Hulubei, William C. Davis

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

Studies in cattle show CD8 cytotoxic T cells (CTL), with the ability to kill intracellular bacteria, develop following stimulation of monocyte-depleted peripheral blood mononuclear cells (mdPBMC) with antigen-presenting cells (APC, i.e. conventional dendritic cells [cDC] and monocyte-derived DC [MoDC]) pulsed with MMP, a membrane protein from Mycobacterium avium subsp. paratuberculosis (Map) encoded byMAP2121c. CTL activity was diminished if CD4 T cells were depleted from mdPBMC before antigen (Ag) presentation by APC, suggesting simultaneous cognate recognition of MMP epitopes presented by MHC I and MHC II molecules to CD4 and CD8 T cells is essential for development of CTL activity. To …

Assessing Agricultural Risk Management Using Historic Crop Insurance Loss Data Over The Ogallala Aquifer, Julian Reyes, Emile Elias, Erin M.K. Haacker, Amy Kremen, Lauren Parker, Caitlin Rottler

Department of Earth and Atmospheric Sciences: Faculty Publications

Much of the agricultural production in the Ogallala Aquifer region relies on groundwater for irrigation. In addition to declining water levels, weather and climate-driven events affect crop yields and revenues. Crop insurance serves as a risk management tool to mitigate these perils. Here, we seek to understand what long-term crop insurance loss data can tell us about agricultural risk management in the Ogallala. We assess patterns and trends in crop insurance loss data from the U.S. Department of Agriculture Risk Management Agency. Indemnities, or insurance payments, totaled $22 billion from 1989–2017 for the 161 counties that overlie the Ogallala Aquifer. …

Consultation Summary For Proposed Declared Pest Rates 2020/2021, Department Of Primary Industries And Regional Development, Western Australia

Biosecurity published reports

In accordance with the Biosecurity and Agriculture Management (Declared Pest Account) Regulations 2014, the Minister for Agriculture and Food carries out consultation on Declared Pest Rates, to be considered prior to the rates being determined and gazetted.

This document is the Department of Primary Industries and Regional Development's response to the submissions received.

Genetic Diversity Analysis In The Turkish Pepper Germplasm Using Ipbs Retrotransposonbasedmarkers, Mehtap Yildiz, Meti̇n Koçak, Muhammad Azhar Nadeem, Pablo Cavagnaro, Karina Barboza, Faheem Shahzad Baloch, Duygu Argün, Davut Keleş

Turkish Journal of Agriculture and Forestry

Capsicum is one of the most important and diverse plant taxa, widely used as a spice and vegetable worldwide, including Turkey. Germplasm characterization is an essential step for crop breeding. In the present study, we characterized the genetic diversity and population structure of a collection of 94 pepper accessions using inter-primer binding site (iPBS) retrotransposon-based markers. A total of 20 iPBS primers were used that generated 172 bands (mean = 8.6 bands/primer), of which ~92% were polymorphic in the entire germplasm collection, whereas 83%, 69%, and 80% of the bands were polymorphic within the C. annuum, C. chinense, and C. …

Macro- And Micromineral Contents Of Different Quinoa (Chenopodium Quinoa Willd.)Varieties Used As Forage By Cattle, Mustafa Tan

Turkish Journal of Agriculture and Forestry

Mineral deficiencies or mineral excess affect livestock production in most regions of the world. For this reason, it is important to know the mineral contents of forages used in animal feeding. Quinoa (Chenopodium quinoa Willd.), which has become a popular grain crop around the world in recent years, is used as forage in animal feeding. This study was carried out to determine the contents of macro- and microminerals and mineral balance in 9 different quinoa varieties. The results of the study indicated that mineral contents of forages show great variation between quinoa varieties. The Cherry Vanilla variety is rich in …

Heritability Estimates And The Variation Of Pomological Traits, Total Phenolic Compounds,And Antioxidant Capacity In Two Apricot Progenies, Firat Ege Karaat, Sedat Serçe

Turkish Journal of Agriculture and Forestry

Even though pomological traits are important in fruit breeding for quality, antioxidant capacity and the total content of phenolic compounds have also gained importance, together with a rising awareness of their health benefits. As a result, this study was conducted to evaluate the variation and heritability levels of antioxidant capacity and total phenolic compounds, as well as pomological traits in 'Hacıhaliloğlu' × 'Stark Early Orange' and 'Çataloğlu' × `Stark Early Orange' apricot crosscombinations based on phenotypic assessments of fruit samples. The results indicated significant differences among F1 progenies in the samples involved in the study. Broad-sense heritability coefficients ranged from …

Comparison Of Unmanaged And Managed Trojan Fir-Scots Pine Forests For Structuralcomplexity, Ferhat Kara, John M. Lhotka

Turkish Journal of Agriculture and Forestry

Unmanaged forests may exhibit a higher degree of biodiversity compared to managed forests. We examined and compared the stand structure, density, and volume of deadwood components of managed and unmanaged mixed forests of Trojan fir (Abies nordmanniana subsp. equi-trojani [Asch. & Sint. ex Boiss] Coode & Cullen)-Scots pine (Pinus sylvestris L.) in northern Turkey. The single-tree selection method has been employed in the managed forests. Density of large live trees ha-1, density of standing deadwood (SDW) ha-1, and volume of lying deadwood (LDW) (m3 ha-1) were calculated for both treatments (i.e. managed or unmanaged). Results showed that unmanaged forests had …

Agronomic Traits Of Einkorn And Emmer Under Different Seeding Rates And Topdressingwith Organic Fertilizers, Ana Pospisil, Milan Pospisil, Marina Brcic

Turkish Journal of Agriculture and Forestry

The goal of this research carried out at the experimental facility of the Faculty of Agriculture of the University of Zagreb in 2015/2016, 2016/2017 and 2017/2018 was to determine the influence of seeding rate and topdressing with organic fertilizers on yield and yield components in einkorn (Triticum monococcum subsp. monococcum) and emmer (Triticum dicoccon) populations collected in the Croatian region of Slavonia. The research comprised four seeding rates: 100, 150, 200, and 250 grains per m2; topdressing with organic fertilizers (Fertil Supernova 12.5 N and Ilsamin N90); and a control (no topdressing). Einkorn populations achieved a higher yield of hulled …

Interactions Between Topsoil Properties And Ecophysiological Responses Of Mangroves(Avicennia Marina) Along The Tidal Gradient In An Arid Region In Qatar, Hanna Chang, Seung Hyun Han, Seongjun Kim, Jiae An, Juha Alatalo, Yowhan Son

Turkish Journal of Agriculture and Forestry

This study investigated the interactions between topsoil properties and ecophysiological responses of Avicennia marina along the tidal gradient in an arid region in Qatar. In February 2017, three plots were established, each at a distance of 0 m (D0), 50 m (D50), and 100 m (D100) from the inland boundary of a mangrove forest. Soil samples were collected at 0-10-cm depth in each plot to determine the chemical properties, and the density of seedlings, saplings, and trees was measured. Moreover, above- (AGB) and below-ground biomass (BGB) were calculated using an allometric equation for A. marina with the measured diameter at …