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Articles 3391 - 3420 of 33724

Full-Text Articles in Agriculture

Water Regime And Fertilizer-Phosphorus Source Effects On Greenhouse Gas Emissions From Rice, Diego Della Lunga, Kris R. Brye, Trenton L. Roberts, Jonathan Brye, Michelle Evans-White, Daniel J. Lessner, Christopher G. Henry Mar 2024

Water Regime And Fertilizer-Phosphorus Source Effects On Greenhouse Gas Emissions From Rice, Diego Della Lunga, Kris R. Brye, Trenton L. Roberts, Jonathan Brye, Michelle Evans-White, Daniel J. Lessner, Christopher G. Henry

Crop, Soil and Environmental Sciences Faculty Publications and Presentations

Greenhouse gas (GHG) emissions from rice (Oryza sativa) systems have been correlated to water management practice, but to date, no study has directly evaluated three main GHGs (i.e., methane [CH4], nitrous oxide [N2O], and carbon dioxide [CO2]) under flood- and furrow-irrigated conditions at the same time as affected by various fertilizer-phosphorus (P) sources, in particular the reportedly slow-release struvite-P source. Therefore, the objective of this study was to evaluate the effect of water regime (flooded and furrow-irrigated) and fertilizer-P source (diammonium phosphate, chemically precipitated struvite, electrochemically precipitated struvite [ECST], triple superphosphate, and …

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Livestock Risk Protection Insurance: Swine, Logan B. Haviland, Ryan Feuz Feb 2024

Livestock Risk Protection Insurance: Swine, Logan B. Haviland, Ryan Feuz

All Current Publications

Livestock risk protection (LRP) insurance is a partially subsidized livestock insurance provided by the United States Department of Agriculture (USDA) Risk Management Agency (RMA) that provides protection to producers against unexpected price declines. This fact sheet presents specific coverage information for swine and presents optimal coverage options based on historical contract performance.

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Livestock Risk Protection Insurance: Fed Cattle, Logan B. Haviland, Ryan Feuz Feb 2024

Livestock Risk Protection Insurance: Fed Cattle, Logan B. Haviland, Ryan Feuz

All Current Publications

Livestock risk protection (LRP) insurance is a partially subsidized livestock insurance provided by the United States Department of Agriculture (USDA) Risk Management Agency (RMA) that provides protection to producers against unexpected price declines. This fact sheet presents specific coverage information for fed cattle and presents optimal coverage options based on historical contract performance.

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Managing Saline And Sodic Soils And Irrigation Water, Burdette Barker, Grant Cardon, Matt Yost, Melanie Stock, Earl Creech, Jody Gale Feb 2024

Managing Saline And Sodic Soils And Irrigation Water, Burdette Barker, Grant Cardon, Matt Yost, Melanie Stock, Earl Creech, Jody Gale

All Current Publications

Salt is an important factor in plant and soil management. Excessive salt concentrations in soil can cause water to be less available to plants because of the osmotic forces of salt in the soil water. Excessive concentrations of different ions can also be toxic to plants. In agricultural soils and irrigation water, salts are typically described in two ways: (1) total salt concentration or salinity, and (2) sodicity, or the concentration of sodium relative to other cations (positively charged atoms or compounds). Understanding the effect of both total salinity and sodicity on plants and soils, along with management and reclamation …

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Livestock Risk Protection Insurance: Feeder Cattle, Logan B. Haviland, Ryan Feuz Feb 2024

Livestock Risk Protection Insurance: Feeder Cattle, Logan B. Haviland, Ryan Feuz

All Current Publications

Livestock risk protection (LRP) insurance is a partially subsidized livestock insurance provided by the United States Department of Agriculture (USDA) Risk Management Agency (RMA) that provides protection to producers against unexpected price declines. This fact sheet presents specific coverage information for feeder cattle and presents optimal coverage options based on historical contract performance.

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Livestock Risk Protection Insurance Faq, Logan B. Haviland, Ryan Feuz Feb 2024

Livestock Risk Protection Insurance Faq, Logan B. Haviland, Ryan Feuz

All Current Publications

Livestock risk protection (LRP) insurance is a partially subsidized livestock insurance provided by the United States Department of Agriculture (USDA) Risk Management Agency (RMA) that provides protection to producers against unexpected price declines. This fact sheet presents commonly asked questions and answers surrounding livestock risk protection insurance. It outlines the purpose of the program and explains how producers can use LRP insurance to mitigate price risk.

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2022 Census Of Agriculture: Nebraska Highlights, Kathleen Brooks, Bradley D. Lubben Feb 2024

2022 Census Of Agriculture: Nebraska Highlights, Kathleen Brooks, Bradley D. Lubben

Cornhusker Economics

In February 2024, the United States Department of Agriculture National Agricultural Statistics Service published data from the 2022 Census of Agriculture. This data is collected every five years. The current article highlights a few of the Nebraska numbers. Two significant highlights from the data are the total number of farms and the total value of production. U.S. farm numbers declined modestly in the U.S. from 2.04 million in 2017 to 1.90 million in 2022. The total value of production for U.S. farms and ranches increased substantially from $388.5 billion in 2017 to $543.1 billion in 2022. Crop production accounted for …

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Quantifying Demand And Willingness To Pay For Local Food Production, Mario Ortez, Taylor Thompson, Valerie Kilders, Nicole Olynk Widmar Feb 2024

Quantifying Demand And Willingness To Pay For Local Food Production, Mario Ortez, Taylor Thompson, Valerie Kilders, Nicole Olynk Widmar

Department of Agricultural Economics Faculty Publications

The location of production and processing has had an increasingly prominent role in discussions regarding food systems today. Acknowledging the increasing importance, we study consumer preferences for and perception of local products with a particular focus on how willingness to pay (WTP) for local origin indication differs across products, types of designations, and rurality of the individual's geographic location. Using data collected through an online survey, we focused on Indiana residents’ preferences for sweet corn and Barbecue (BBQ) sauce with the sample representing both rural and urban consumers across all twelve economic growth regions in the state. Results reveal significant …

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Calibration Of Hybrid-Maize Model For Simulation Of Soil Moisture And Yield In Production Corn Fields, Anthony A. Amori, Olufemi P. Abimbola, Trenton E. Franz, Daran Rudnick, Javed Iqbal, Haishun Yang Feb 2024

Calibration Of Hybrid-Maize Model For Simulation Of Soil Moisture And Yield In Production Corn Fields, Anthony A. Amori, Olufemi P. Abimbola, Trenton E. Franz, Daran Rudnick, Javed Iqbal, Haishun Yang

Department of Agronomy and Horticulture: Faculty Publications

Model calibration is essential for acceptable model performance and applications. The Hybrid-Maize model, developed at the University of Nebraska-Lincoln, is a process-based crop simulation model that simulates maize growth as a function of crop and field management and environmental conditions. In this study, we calibrated and validated the Hybrid-Maize model using soil moisture and yield data from eight commercial production fields in two years. We used a new method for the calibration and multi-parameter optimization (MPO) based on kriging with modified criteria for selecting the parameter combinations. The soil moisture-related parameter combination (SM-PC3) improved simulations of soil water dynamics, but …

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Ecology And Management Of The Crapemyrtle Aphid (Hemiptera: Aphididae) On Crapemyrtle (Myrtales: Lythraceae) In The Southern United States, Caleb J. Wilson, Matthew A. Bertone Feb 2024

Ecology And Management Of The Crapemyrtle Aphid (Hemiptera: Aphididae) On Crapemyrtle (Myrtales: Lythraceae) In The Southern United States, Caleb J. Wilson, Matthew A. Bertone

Entomology Faculty Publications

Crapemyrtle aphid [Sarucallis kahawaluokalani (Kirkaldy 1907)] (CMA) is an introduced pest of crapemyrtle (Lagerstroemia spp. L.), which is among the most common ornamental tree genera in the southern United States. Native to Southeast Asia, CMA has become established on 5 other continents. CMAs produce honeydew as they feed which supports sooty mold growth and can result in leaf defoliation on infested trees. CMAs tend to be most abundant in crapemyrtles planted in locations with extensive surrounding impervious surface cover. A large community of generalist natural enemies are found in close association with CMA, which suggests that CMAs may help conserve …

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Powdery Mildew Of Bigleaf Hydrangea: Biology, Control, And Breeding Strategies For Resistance, Christina Jennings, Fulya Baysal-Gurel, Lisa W. Alexander Feb 2024

Powdery Mildew Of Bigleaf Hydrangea: Biology, Control, And Breeding Strategies For Resistance, Christina Jennings, Fulya Baysal-Gurel, Lisa W. Alexander

Agricultural and Environmental Sciences Faculty Research

Hydrangea macrophylla, commonly known as bigleaf, garden, French, or florist hydrangea, is the most economically important member of the Hydrangea genus, with a breeding history spanning hundreds of years. Bigleaf hydrangea breeding improvement has largely focused on aesthetic traits and there are few varieties tolerant or resistant to major diseases such as powdery mildew. Powdery mildew is an obligate biotrophic Ascomycete in the order Erysiphales represented by approximately 900 species worldwide. The disease-causing agent in hydrangeas is Golovinomyces orontii (formerly Erysiphe polygoni DC), which tarnishes the beauty, growth, and salability of bigleaf hydrangea plants, especially those packed closely in production …

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Effect Of Rainfall Pattern On Sediment Yield And Runoff In Different Textured Soils, Abdul-Rahman Perdawood Haydar, Kamyar Mutalib Mohammed, Dawod Rasooli Keya Feb 2024

Effect Of Rainfall Pattern On Sediment Yield And Runoff In Different Textured Soils, Abdul-Rahman Perdawood Haydar, Kamyar Mutalib Mohammed, Dawod Rasooli Keya

Polytechnic Journal

Evaluating the impacts of rainfall intensities on bulk density, runoff rate, and sediment yield is critical in soil characterization and sediment transport. The primary objective of this research is to use multiple linear regression analysis to establish several models correlating rainfall intensity, silt content, and clay content with bulk density, sediment yield, and runoff rate. Several soil samples from different locations in Erbil, Iraq, were collected. Soil samples were placed in a rainfall simulator and brought back to in-situ conditions. The parameters of the suggested models for predicting bulk density, runoff rate, and sediment yield were estimated using linear and …

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A Spatio-Temporal Modelling Approach To Understand The Effect Of Urban Fruit Fly Outbreaks On Peri-Urban Orchards, Andrew Broadley, Rieks Van Klinken, Dean R. Paini, Matthew Hill, Elliot T. Howse Feb 2024

A Spatio-Temporal Modelling Approach To Understand The Effect Of Urban Fruit Fly Outbreaks On Peri-Urban Orchards, Andrew Broadley, Rieks Van Klinken, Dean R. Paini, Matthew Hill, Elliot T. Howse

Horticulture Research Articles

Urban areas are well-known sources of fruit fly introduction and unmanaged populations pose a high risk of dispersal to surrounding agricultural areas. Although management of urban fruit fly populations is recognised as being important for area-wide control programmes, its relative importance is rarely quantified. Identifying possible sources of fruit fly populations is important to the success of area-wide programs, as well as to on-farm management. We developed a modelling approach to analyse the spatio-temporal connectivity of fruit fly across urban-agriculture boundaries. For a case study, we examine Mediterranean fruit fly, Ceratitis capitata, outbreaks in two fruit growing …

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Burial And Subsequent Growth Of Rigid Ryegrass (Lolium Rigidum) And Ripgut Brome (Bromus Diandrus) Following Strategic Deep Tillage, Catherine Borger, George Mwenda, Sarah Collins, Stephen Davies, Arslan Peerzada Dr, Andrew Van Burgel Feb 2024

Burial And Subsequent Growth Of Rigid Ryegrass (Lolium Rigidum) And Ripgut Brome (Bromus Diandrus) Following Strategic Deep Tillage, Catherine Borger, George Mwenda, Sarah Collins, Stephen Davies, Arslan Peerzada Dr, Andrew Van Burgel

Biosecurity Research Articles

Soil amelioration via strategic deep tillage is occasionally utilised within the conservation tillage systems to alleviate soil constraints, but its impact on weed seed burial and subsequent growth within the agronomic system is poorly understood. This study assessed the effects of different strategic deep tillage practices, including soil loosening (deep ripping), soil mixing (rotary spading), or soil inversion (mouldboard plough), on weed seed burial and subsequent weed growth, compared to a no-till control. The tillage practices were applied in 2019 at Yerecoin and Darkan, Western Australia, and data on weed seed burial and growth was collected during the following three-year …

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The Fuxi Farm: Practice Exploration And Reflection On Integrated Innovation Of Smart Agriculture Technology, Yucheng Zhang, Xiaobo Zhang, Shuqin Gao, Congcong Zheng, Jingyao Zhang, Ya Wen, Lujun Li, Zhuo Wang, Tie Li, Honglong Zhao Feb 2024

The Fuxi Farm: Practice Exploration And Reflection On Integrated Innovation Of Smart Agriculture Technology, Yucheng Zhang, Xiaobo Zhang, Shuqin Gao, Congcong Zheng, Jingyao Zhang, Ya Wen, Lujun Li, Zhuo Wang, Tie Li, Honglong Zhao

Bulletin of Chinese Academy of Sciences (Chinese Version)

Smart agriculture plays a pivotal role in enhancing food security by optimizing resource use and improving crop yields through the application of AI technologies. The establishment of smart farms is critical to rapidly integrating AI into agricultural production, offering platforms for both the deployment and testing of AI solutions and equipment. This paper examines the development of smart farms, with a focus on practices from developed countries, and assesses the current status of smart farming in China. We then focus on exploring the content, pathways, and practices for constructing a smart agricultural production system in China through the establishment of …

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Accelerate Innovation Of Forage Intelligent Breeding Technology: Reflection And Suggestions, Haichun Jing, Weijuan Hu, Jingbo Jin, Jingyu Zhang, Yao Zhou, Yue Gong, Gang Yao, Lei Wang, Kang Chong Feb 2024

Accelerate Innovation Of Forage Intelligent Breeding Technology: Reflection And Suggestions, Haichun Jing, Weijuan Hu, Jingbo Jin, Jingyu Zhang, Yao Zhou, Yue Gong, Gang Yao, Lei Wang, Kang Chong

Bulletin of Chinese Academy of Sciences (Chinese Version)

The world is facing unprecedented changes today, with continuous population growth intensifying the pressure on food demand. The shift towards diversified dietary structures has increased the demand for feed grains, while climate change further threatens China’s food security by affecting agricultural productivity and carbon sequestration economy. At present, China has entered a new era of food supply and feed. As the food supply for animals, forage is the core component of feed, and its industrial development has profound strategic significance for ensuring national food security. This study analyzes the current situation of China’s forage seed industry, summarizes the cutting-edge achievements …

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Rapid Soil Detection Technology Aids In Assessing Soil Nutrients In China, Wei Wu, Xiaoyong Liao, Xiaopeng Li, Yuntao Wu, Huixian Lu, Yucheng Zhang, Jiabao Zhang Feb 2024

Rapid Soil Detection Technology Aids In Assessing Soil Nutrients In China, Wei Wu, Xiaoyong Liao, Xiaopeng Li, Yuntao Wu, Huixian Lu, Yucheng Zhang, Jiabao Zhang

Bulletin of Chinese Academy of Sciences (Chinese Version)

Soil quality is the core issue for ensuring China’s food security, and soil health is the top priority of soil quality. Comprehensive, rapid and accurate acquisition of soil background data is the prerequisite for achieving homogeneous soil management and formulating balanced fertilization strategies, which will play a key role in improving non-point source pollution caused by unreasonable fertilization and achieving balanced grain yield increase. This study reviews rapid soil testing methods both domestically and internationally. Based on previous research, it proposes a technical approach to rapidly detect soil nutrient concentrations by calculating the gamma quanta released during the decay of …

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Hillside Agricultural Machinery And Agricultural Intelligence Driven By New Technologies, Hong Qiao, Yanfeng Lyu, Enhao Zheng Feb 2024

Hillside Agricultural Machinery And Agricultural Intelligence Driven By New Technologies, Hong Qiao, Yanfeng Lyu, Enhao Zheng

Bulletin of Chinese Academy of Sciences (Chinese Version)

Hilly and mountainous areas play a crucial role in China’s agricultural production. However, the low level of comprehensive mechanization for crop cultivation, planting, and harvesting in these regions severely hampers the modernization of agriculture. The complex terrain and diverse cropping patterns in hilly areas necessitate the development of specialized agricultural machinery and robots tailored to these unique landscapes. To advance this process, the Chinese government has introduced a series of policies in recent years to support the research and development of agricultural machinery for hilly regions, providing strong backing for the advancement of agricultural technology in these areas. Against this …

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Artificial Intelligence Innovation For Smart Plant Factory To Diversify Its Big Food Production Functions, Huaqin Gong, Haichun Jing, Xin Tan, Xianhui Wang, Yucheng Zhang, Rongcheng Lin, Mingyu Yang, Shuang Lin, Hualing Xie, Yanping Yang, Shitang Ye, Peng Li, Tingyun Kuang Feb 2024

Artificial Intelligence Innovation For Smart Plant Factory To Diversify Its Big Food Production Functions, Huaqin Gong, Haichun Jing, Xin Tan, Xianhui Wang, Yucheng Zhang, Rongcheng Lin, Mingyu Yang, Shuang Lin, Hualing Xie, Yanping Yang, Shitang Ye, Peng Li, Tingyun Kuang

Bulletin of Chinese Academy of Sciences (Chinese Version)

China’s food security is facing more and more severe and complex challenges, such as tight balance between food demand and supply, the upgrading of consumption structure, and resource constraints. The plant factory is an advanced scenario in agricultural production, a diversified food production system that gets rid of the constraints of “ask for food from the mother nature” and respond to disasters and wars, and is oriented to space. Nevertheless, the high cost greatly limits the application and development of plant factories. The rapid development of artificial intelligence will bring new opportunities for the innovative development and expansion of plant …

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Study On The Chemical Composition And Antioxidant Activities Of Essential Oil Extracted From Horwoodia Dicksoniae Growing In The Uae, Salama Sari Almansoori Feb 2024

Study On The Chemical Composition And Antioxidant Activities Of Essential Oil Extracted From Horwoodia Dicksoniae Growing In The Uae, Salama Sari Almansoori

Thesis/ Dissertation Defenses

Plant-derived substances including essential oils, secondary metabolites and other chemical substances are gaining attention due to their broad spectrum use in different fields. Native medicinal plants can play key role in healthcare field in any country. Horwoodia dicksoniae is a native endangered plant in UAE. Current study is about chemical composition and antioxidant properties of H. dicksoniae’s essential oil as well as evaluating growth of this native endangered plant under different environmental conditions. For this purpose, first step included confirmation of the viability of seeds obtained from a seed bank following germination of seeds in different media. During growth period …

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Increasing Workforce Skills: The Possible Disconnect Between Employers And Potential Job Seekers, Cheryl A. Burkhart-Kriesel Feb 2024

Increasing Workforce Skills: The Possible Disconnect Between Employers And Potential Job Seekers, Cheryl A. Burkhart-Kriesel

Cornhusker Economics

In a multi-year survey of potential job seekers, those who are likely to change jobs in the next year or who are likely to reenter the workforce in the next year, several key training obstacles for improving their employment situation were identified. There seemed to be only slight differences in how they viewed these challenges, regardless of whether they saw their potential job as a career, a steppingstone to a career, or just a job to get by. The cost of training, the lack of available training, the distance or transportation to the training, lack of time, and the knowledge …

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U.S. Cereal Rye Winter Cover Crop Growth Database, Alexandra M. Huddell, Resham Thapa, Guillermo S. Marcillo, Lori J. Abendroth, Victoria J. Ackroyd, Shalamar D. Armstrong, Gautam Asmita, Muthukumar V. Bagavathiannan, Kipling S. Balkcom, Andrea Basche, Shawn Beam, Kevin Bradley, Lucas Pecci Canisares, Heather Darby, Adam S. Davis, Pratap Devkota, Warren A. Dick, Jeffery A. Evans, Wesley J. Everman, Tauana Ferreira De A Lmeida, Michael L. Flessner, Lisa M. Fultz, Stefan Gailans, Masoud Hashemi, Joseph Haymaker, Matthew J. Helmers, Nicholas Jordan, Thomas C. Kaspar, Quirine M. Ketterings, Eileen Kladivko, Alexandra Kravchenko, Eugene P. Law, Lauren Lazaro, Ramon G. Leon, Jeffrey Liebert, John Lindquist, Kristen Loria, Jodie M. Mcvane, Jarrod O. Miller, Michael J. Mulvaney, Nsalambi V. Nkongolo, Jason K. Norsworthy, Binaya Parajuli, Christopher Pelzer, Cara Peterson, Hanna Poffenbarger, Pratima Poudel, Mark S. Reiter, Matt Ruark, Matthew R. Ryan, Spencer Samuelson, John E. Sawyer, Sarah Seehaver, Lovreet S. Shergill, Yogendra Raj Upadhyaya, Mark Vangessel, Ashley L. Waggoner, John M. Wallace, Samantha Wells, Charles White, Bethany Wolters, Alex Woodley, Rongzhong Ye, Eric Youngerman, Brian A. Needelman, Steven B. Mirsky Feb 2024

U.S. Cereal Rye Winter Cover Crop Growth Database, Alexandra M. Huddell, Resham Thapa, Guillermo S. Marcillo, Lori J. Abendroth, Victoria J. Ackroyd, Shalamar D. Armstrong, Gautam Asmita, Muthukumar V. Bagavathiannan, Kipling S. Balkcom, Andrea Basche, Shawn Beam, Kevin Bradley, Lucas Pecci Canisares, Heather Darby, Adam S. Davis, Pratap Devkota, Warren A. Dick, Jeffery A. Evans, Wesley J. Everman, Tauana Ferreira De A Lmeida, Michael L. Flessner, Lisa M. Fultz, Stefan Gailans, Masoud Hashemi, Joseph Haymaker, Matthew J. Helmers, Nicholas Jordan, Thomas C. Kaspar, Quirine M. Ketterings, Eileen Kladivko, Alexandra Kravchenko, Eugene P. Law, Lauren Lazaro, Ramon G. Leon, Jeffrey Liebert, John Lindquist, Kristen Loria, Jodie M. Mcvane, Jarrod O. Miller, Michael J. Mulvaney, Nsalambi V. Nkongolo, Jason K. Norsworthy, Binaya Parajuli, Christopher Pelzer, Cara Peterson, Hanna Poffenbarger, Pratima Poudel, Mark S. Reiter, Matt Ruark, Matthew R. Ryan, Spencer Samuelson, John E. Sawyer, Sarah Seehaver, Lovreet S. Shergill, Yogendra Raj Upadhyaya, Mark Vangessel, Ashley L. Waggoner, John M. Wallace, Samantha Wells, Charles White, Bethany Wolters, Alex Woodley, Rongzhong Ye, Eric Youngerman, Brian A. Needelman, Steven B. Mirsky

Department of Agronomy and Horticulture: Faculty Publications

Winter cover crop performance metrics (i.e., vegetative biomass quantity and quality) affect ecosystem services provisions, but they vary widely due to differences in agronomic practices, soil properties, and climate. Cereal rye (Secale cereale) is the most common winter cover crop in the United States due to its winter hardiness, low seed cost, and high biomass production. We compiled data on cereal rye winter cover crop performance metrics, agronomic practices, and soil properties across the eastern half of the United States. The dataset includes a total of 5,695 cereal rye biomass observations across 208 site-years between 2001–2022 and encompasses …

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Food Labeling: Ingredient Exemptions And Product Claims, Elena Krasovkaia, Bradley J. Rickard, Brenna Ellison, Brandon R. Mcfadden, Norbert Wilson Feb 2024

Food Labeling: Ingredient Exemptions And Product Claims, Elena Krasovkaia, Bradley J. Rickard, Brenna Ellison, Brandon R. Mcfadden, Norbert Wilson

Agricultural Economics and Agribusiness Faculty Publications and Presentations

New breeding methods have provided scientists with opportunities to improve traits in a wide range of crops, however, there remains resistance to foods that are produced from these crops, and mandates on labels used to describe such processes continue to be a source of policy debate. Here we focus on gene editing and examine (i) whether consumer acceptance varies when the technology is applied to different ingredients (unrefined versus highly refined ingredients) and (ii) the impact of two different claims related to gene editing (health-focused claim versus an environment-focused claim). Our results show that consumers are less likely to purchase …

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Using Data From Uniform Rate Applications For Site-Specific Nitrogen Recommendations, Eunchun Park, B. Wayne Brorson, Xiaofei Li Feb 2024

Using Data From Uniform Rate Applications For Site-Specific Nitrogen Recommendations, Eunchun Park, B. Wayne Brorson, Xiaofei Li

Agricultural Economics and Agribusiness Faculty Publications and Presentations

Much historical yield-monitor data is from fields where a uniform rate of nitrogen was applied. A new approach is proposed using this data to get site-specific nitrogen recommendations. Bayesian methods are used to estimate a linear plateau model where only the plateau is spatially varying. The model is then illustrated by using it to make site-specific nitrogen recommendations for corn production in Mississippi. The in-sample recommendations generated by this approach return an estimated $9/acre on the example field. The long-term goal is to combine this information with other information such as remote sensing measurements.

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Embracing Diversity In Agricultural Economics, Timothy Meyer Feb 2024

Embracing Diversity In Agricultural Economics, Timothy Meyer

Cornhusker Economics

To steal an overused cliché, “There’s room in the tent for everyone.” Over the 2023 academic year, I have reiterated this message to all my students, with one addition. Not only is there room for everyone, but all are invited AND welcome. Food is something we all have in common, no matter the background. I think this is why producers in the state of Nebraska feel as strongly as they do about the food they produce; it is life-giving and should be taken seriously. Nebraska Agriculture is part of what makes our state great, and that is not a secret …

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Fear, Racism, Agriculture: The Drive For Japanese Internment, Brandon James March Feb 2024

Fear, Racism, Agriculture: The Drive For Japanese Internment, Brandon James March

Doctoral Dissertations and Projects

The focus of this dissertation is the timing of the forced evacuation of the ethnic Japanese population from the West Coast in 1942. This work focuses on three key factors driving the timing of the evacuation: racism, security concerns, and agriculture. Racism has been studied and written about extensively; however, an overview of this factor is critical as it directly influenced the removal of Japanese American citizens in addition to Japanese immigrants. This dissertation will focus on the intellectual origins of racism and prejudice by focusing on key figures and tracing the ideas and beliefs and how they influenced the …

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Impacts Of Harvest Date And Concurrent Alkali Pretreatment And Ensiling On Anaerobic Digestion Of Pennycress Biomass, Liangcheng Yang, Tuba Yasmin Lubna, Michael A. Moklak, Barsanti Gautum, Nicholas J. Heller, Robert L. Rhykerd, David E. Kopsell, John C. Sedbrook Feb 2024

Impacts Of Harvest Date And Concurrent Alkali Pretreatment And Ensiling On Anaerobic Digestion Of Pennycress Biomass, Liangcheng Yang, Tuba Yasmin Lubna, Michael A. Moklak, Barsanti Gautum, Nicholas J. Heller, Robert L. Rhykerd, David E. Kopsell, John C. Sedbrook

Faculty Publications – Biological Sciences

Pennycress (Thlaspi arvense L.) is an annual cover crop known for its exceptional cold tolerance and high oil and protein yields. Pennycress can be integrated into a corn–soybean rotation in the U.S. However, the utilization of pennycress biomass remains largely unexplored, including assessing compositional changes through its growth and organic matter digestibility. This study harvested pennycress at three growth stages, characterized the biomass for anaerobic digestion (AD), and tested the effects of concurrent alkali pretreatment and ensiling on the biomass methane yield. Results showed that the biomass harvested when the plants were undergoing senescence (“third-harvest”) had higher contents of …

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Can The Impact Of Gravel Roads On Organic Layer Thickness Explain The Distribution Of Populus Tremuloides Along Road Networks In The Boreal Forest Of Eastern Canada?, Mathilde Marchais, Dominique Arseneault, Yves Bergeron Feb 2024

Can The Impact Of Gravel Roads On Organic Layer Thickness Explain The Distribution Of Populus Tremuloides Along Road Networks In The Boreal Forest Of Eastern Canada?, Mathilde Marchais, Dominique Arseneault, Yves Bergeron

Aspen Bibliography

Roads are known to alter environmental conditions and the composition of road edge plant communities, particularly when exogenous materials are used as road surfacing. In this study, we evaluate the impact of gravel roads on the organic layer thickness (OLT) and aspen distribution in a boreal forest landscape of Eastern Canada. The OLT and aspen distribution were compared at different distances from the roads (0 m, 10 m, and >10 m) to determine whether a reduction in the OLT along the roads could explain the distribution of aspen along the road network, and in particular the role of the roads …

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Oystershell Scale (Hemiptera: Diaspididae) Population Growth, Spread, And Phenology On Aspen In Arizona, Usa, Connor D. Crouch, Richard W. Hofstetter, Amanda M. Grady, Nylah N.S. Edwards, Kristen M. Waring Feb 2024

Oystershell Scale (Hemiptera: Diaspididae) Population Growth, Spread, And Phenology On Aspen In Arizona, Usa, Connor D. Crouch, Richard W. Hofstetter, Amanda M. Grady, Nylah N.S. Edwards, Kristen M. Waring

Aspen Bibliography

Oystershell scale (OSS; Lepidosaphes ulmi L.) is an invasive insect that threatens sustainability of aspen (Populus tremuloides Michx.) in the southwestern United States. OSS invasions have created challenges for land managers tasked with maintaining healthy aspen ecosystems for the ecological, economic, and aesthetic benefits they provide. Active management is required to suppress OSS populations and mitigate damage to aspen ecosystems, but before management strategies can be implemented, critical knowledge gaps about OSS biology and ecology must be filled. This study sought to fill these gaps by addressing 3 questions: (i) What is the short-term rate of aspen mortality in …

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Impacts Of Climate Change And Agricultural Practices On Nitrogen Processes, Genes, And Soil Nitrous Oxide Emissions: A Quantitative Review Of Meta-Analyses, Dafeng Hui, Avedananda Ray, Lovish Kasrija, Jaekedah Christian Feb 2024

Impacts Of Climate Change And Agricultural Practices On Nitrogen Processes, Genes, And Soil Nitrous Oxide Emissions: A Quantitative Review Of Meta-Analyses, Dafeng Hui, Avedananda Ray, Lovish Kasrija, Jaekedah Christian

Biology Faculty Research

Microbial-driven processes, including nitrification and denitrification closely related to soil nitrous oxide (N2O) production, are orchestrated by a network of enzymes and genes such as amoA genes from ammonia-oxidizing bacteria (AOB) and archaea (AOA), narG (nitrate reductase), nirS and nirK (nitrite reductase), and nosZ (N2O reductase). However, how climatic factors and agricultural practices could influence these genes and processes and, consequently, soil N2O emissions remain unclear. In this comprehensive review, we quantitatively assessed the effects of these factors on nitrogen processes and soil N2O emissions using mega-analysis (i.e., meta-meta-analysis). The results showed that global warming increased soil nitrification and denitrification …

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