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Cost Benefit Analysis Of Genetic Markers In Cattle, Josh Crystal 2017 University of Arkansas, Fayetteville

Cost Benefit Analysis Of Genetic Markers In Cattle, Josh Crystal

Agricultural Economics and Agribusiness Undergraduate Honors Theses

Genetic sequencing in beef cattle (L. Bos Taurus) is expected to aid producers select cattle with traits that enhance profitability. Using data from experimental trials conducted with Angus, Brahman, and their reciprocal cross, this project analyzes the profitability of grazing endophyte infected tall Fescue (L. Festuca arundinacea Schreb.) vs. Bermuda grass (L. Cynodon dactylon) pasture. The study is unique in the sense that actual cow-calf breeding failure rates (open cows were not culled) were tracked from 1991 to 1997 on herds that were bred to calf in spring and either exposed to fungal endophyte (L.Acremonium coenophialum Morgan-Jones and Gams ...


Do Farm Subsidies Affect Crop Diversification?, Chadwick O'Neal 2017 Georgia College

Do Farm Subsidies Affect Crop Diversification?, Chadwick O'Neal

Georgia College Student Research Events

The United States spends $20 billion each year on farm subsidies. Farmers face increased risk and income variation when their crop portfolio is less diversified. It’s possible for farm subsidies to decrease diversification if they are focused on specific crops. Utilizing state level subsidy and agricultural data from the Environmental Working Group, I used econometric analysis to estimate the effect of farm subsidies on crop diversification. I used the number of acres planted from the 15 top most subsidized and grown crops in the United States to derive my dependent variable, the Herfindahl-Hirschman index (HHI). The HHI is a ...


Effect Of Red Cabbage Extract On Minced Nile Perch Fish Patties Vacuum Packaged In High And Low Oxygen Barrier Films, Ayse Demirbas, Yavuz Yagiz, Ziynet Boz, Bruce A. Welt, Eric McLamore, Maurice Marshall, William Pelletier, Amarat Simonne 2017 University of Florida

Effect Of Red Cabbage Extract On Minced Nile Perch Fish Patties Vacuum Packaged In High And Low Oxygen Barrier Films, Ayse Demirbas, Yavuz Yagiz, Ziynet Boz, Bruce A. Welt, Eric Mclamore, Maurice Marshall, William Pelletier, Amarat Simonne

Journal of Applied Packaging Research

Oxidation of polyunsaturated fatty acids (PUFA), eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) in fish causes loss of product quality. Oxidative rancidity causes loss of nutritional value and undesirable color changes. Therefore, powerful antioxidant extracts may provide a relatively low cost and natural means to reduce oxidation, resulting in longer, higher quality and higher value shelf life of foods.

In this study, we measured synergistic effects of red cabbage antioxidant and vacuum packaging on lipid oxidation in fresh tilapia patties using thiobarbituric acid reactive substances (TBARS) assay, peroxide value (PV), pH and color analysis.

Concentrated red cabbage extract was obtained ...


Farm Organizations And Farm Profits In Tama County, Iowa, Clifford C. Taylor, Edgar B. Hurd 2017 Iowa State College

Farm Organizations And Farm Profits In Tama County, Iowa, Clifford C. Taylor, Edgar B. Hurd

Research Bulletin (Iowa Agriculture and Home Economics Experiment Station)

To learn in detail how farmers in Tama County, Iowa, have combined the elements of their businesses into going concerns, and the financial results which have attended their attempt to secure the most profitably organized farm, is the purpose of this study. It seeks not only to learn the" anatomy" or organization, but also, as far as possible, the" physiology", or operation, of the farming business as found in this area. It compares the organization of these farms in 1921 with that in 1918 and in 1913. These three years, for which data have been secured, represent pre-war conditions, war-time ...


Sensing Nitrogen Stress In Corn, John Sawyer, John Lundvall, Jennifer Hawkins, Dan Barker 2017 Iowa State University

Sensing Nitrogen Stress In Corn, John Sawyer, John Lundvall, Jennifer Hawkins, Dan Barker

John E. Sawyer

Determining the proper nitrogen (N) fertilization rate is important for the economic viability of corn production. A desire for high yields, fueled by low fertilizer N costs, led producers to apply rates that ensured adequate N rather than risk costly yield losses due to a shortage of N. Due to water quality concerns and recently high N fertilizer prices, management strategies are needed that can improve the efficiency and profitability of N use. With N application rates based on economic return instead of maximizing productivity, producers want to confirm that rate decisions are working adequately. Also, if unexpected N losses ...


Soil Testing, Antonio Mallarino, John Sawyer, John Creswell 2017 Iowa State University

Soil Testing, Antonio Mallarino, John Sawyer, John Creswell

John E. Sawyer

Establishing and using a soil testing program to more efficiently manage crop essential nutrients.


Phosphorus Application, Antonio Mallarino, John Sawyer, John Creswell 2017 Iowa State University

Phosphorus Application, Antonio Mallarino, John Sawyer, John Creswell

John E. Sawyer

Management tools that help in creating a phosphorus management plan.


Succession Planning And Perceived Obstacles And Attractions For Future Generations Entering Beef Cattle Production, Lee L. Schulz, Georgeanne M. Artz, Patrick J. Gunn 2017 Iowa State University

Succession Planning And Perceived Obstacles And Attractions For Future Generations Entering Beef Cattle Production, Lee L. Schulz, Georgeanne M. Artz, Patrick J. Gunn

Journal of Applied Farm Economics

This study provides valuable insights into cow-calf producer and feedlot operator succession plans for transferring cattle operations upon exiting the industry. Across both cow-calf producers and feedlot operators, about 50% expect to be raising cattle for 10 more years or less; however, about 39% of these producers do not have a succession plan in place. Cow-calf producers view a rural lifestyle, self-employment, working with livestock, and working with family as the biggest attractions to future generations entering beef cattle production. Cow-calf producers view environmental regulations, land tax policy, and expansion of corn and soybean acres as the biggest obstacles. Feedlot ...


Perception Towards Beef Industry And Willingness To Pay For Beef Products Among Millennials In Kentucky, Steven Green 2017 Western Kentucky University

Perception Towards Beef Industry And Willingness To Pay For Beef Products Among Millennials In Kentucky, Steven Green

Student Research Conference Select Presentations

As the future of the beef industry contin ues to develop, it is safe to say millennials are going to have a massive impact. This paper expl ained the perception millennials have towards beef products and the beef industry as a wh ole, beef consumption patterns, and compared willingness to pay between rural and urban millennials. We applied a conditional logistic model to online survey data collected from 219 millennials during Spring 2016. Data collection was done by distributing a web link to m illennials in various colleges and universities throughout the state of Kentucky. Resu lts indicate that millennials ...


Concepts And Rationale For Regional Nitrogen Rate Guidelines For Corn, John Sawyer, Emerson Nafziger, Gyles Randall, Larry Bundy, George Rehm, Brad Joern 2017 Iowa State University

Concepts And Rationale For Regional Nitrogen Rate Guidelines For Corn, John Sawyer, Emerson Nafziger, Gyles Randall, Larry Bundy, George Rehm, Brad Joern

John E. Sawyer

Nitrogen (N) is typically one of the largest corn fertilization expenses. Nitrogen application is critical because it significantly improves corn yield in many crop rotations. When choosing N rates, producers need to carefully consider both achieving most profitable economic return and advancing environmental stewardship.

In 2004, university agronomists from the Corn Belt states began discussions regarding N rate use for corn production. The reasons for the discussions centered on apparent differences in methods for determining N rates across states, misperceptions regarding N rate guidelines, and concerns about application rates as corn yields have climbed to historic levels. An outcome of ...


Valuing Water Quality In Midwestern Lake Ecosystems, Kevin J. Egan, Joseph A. Herriges Sr., Catherine L. Kling, John A. Downing 2017 Iowa State University

Valuing Water Quality In Midwestern Lake Ecosystems, Kevin J. Egan, Joseph A. Herriges Sr., Catherine L. Kling, John A. Downing

Catherine Kling

As increased attention is focused on the issue of water quality in the state of Iowa, policymakers must grapple with the pressures of balancing federal water quality requirements, tight conservation budgets, and citizen concern for environmental preservation and restoration of Iowa’s water resources. Efforts to improve water quality typically entail significant costs, either in the form of state resources to fund cleanup efforts or private costs associated with altering land uses, farming practices, municipal treatment facility expansions, or other investments.


Research Needs And Challenges In The Few System: Coupling Economic Models With Agronomic, Hydrologic, And Bioenergy Models For Sustainable Food, Energy, And Water Systems, Catherine L. Kling, Raymond W. Arritt, Gray Calhoun, David A. Keiser, John M. Antle, Jeffery G. Arnold, Miguel Carriquiry, Indrajeet Chaubey, Peter Christensen, Baskar Ganapathysubramanian, Philip Gassman, William Gutowski, Thomas W. Hertel, Gerritt Hoogenboom, Elena Irwin, Madhu Khanna, Pierre Mérel, Daniel J. Phaneuf, Andrew Plantinga, Stephen Polasky, Paul Preckel, Sergey Rabotyagov, Ivan Rudik, Silvia Secchi, Aaron Smith, Andrew VanLoocke, Calvin Wolter, Jinhua Zhao, Wendong Zhang 2017 Iowa State University

Research Needs And Challenges In The Few System: Coupling Economic Models With Agronomic, Hydrologic, And Bioenergy Models For Sustainable Food, Energy, And Water Systems, Catherine L. Kling, Raymond W. Arritt, Gray Calhoun, David A. Keiser, John M. Antle, Jeffery G. Arnold, Miguel Carriquiry, Indrajeet Chaubey, Peter Christensen, Baskar Ganapathysubramanian, Philip Gassman, William Gutowski, Thomas W. Hertel, Gerritt Hoogenboom, Elena Irwin, Madhu Khanna, Pierre Mérel, Daniel J. Phaneuf, Andrew Plantinga, Stephen Polasky, Paul Preckel, Sergey Rabotyagov, Ivan Rudik, Silvia Secchi, Aaron Smith, Andrew Vanloocke, Calvin Wolter, Jinhua Zhao, Wendong Zhang

Catherine Kling

On October 12–13, a workshop funded by the National Science Foundation was held at Iowa State University in Ames, Iowa with a goal of identifying research needs related to coupled economic and biophysical models within the FEW system. Approximately 80 people attended the workshop with about half representing the social sciences (primarily economics) and the rest from the physical and natural sciences. The focus and attendees were chosen so that findings would be particularly relevant to SBE research needs while taking into account the critical connectivity needed between social sciences and other disciplines. We have identified several major gaps ...


The Optimality Of Using Marginal Land For Bioenergy Crops: Tradeoffs Between Food, Fuel, And Environmental Services, Adriana M. Valcu-Lisman, Catherine L. Kling, Philip W. Gassman 2017 Iowa State University

The Optimality Of Using Marginal Land For Bioenergy Crops: Tradeoffs Between Food, Fuel, And Environmental Services, Adriana M. Valcu-Lisman, Catherine L. Kling, Philip W. Gassman

Catherine Kling

We assess empirically how agricultural lands should be used to produce the highest valued outputs, which include food, energy, and environmental goods and services. We explore efficiency tradeoffs associated with allocating land between food and bioenergy and use a set of market prices and nonmarket environmental values to value the outputs produced by those crops. We also examine the degree to which using marginal land for energy crops is an approximately optimal rule. Our empirical results for an agricultural watershed in Iowa show that planting energy crops on marginal land is not likely to yield the highest valued output.


Least-Cost Control Of Agricultural Nutrient Contributions To The Gulf Of Mexico Hypoxic Zone, Sergey S. Rabotyagov, Todd Campbell, Manoj K. Jha, Hongli Feng, Philip W. Gassman, Lyubov A. Kurkalova, Sylvia Secchi, Catherine L. Kling 2017 University of Washington

Least-Cost Control Of Agricultural Nutrient Contributions To The Gulf Of Mexico Hypoxic Zone, Sergey S. Rabotyagov, Todd Campbell, Manoj K. Jha, Hongli Feng, Philip W. Gassman, Lyubov A. Kurkalova, Sylvia Secchi, Catherine L. Kling

Catherine Kling

No abstract provided.


Impacts Of Climate Change On Hydrology, Water Quality And Crop Productivity In The Ohio-Tennessee River Basin, Yiannis Panagopoulos, Philip W. Gassman, Raymond W. Arritt, Daryl E. Herzmann, Todd D. Campbell, Adriana Valcu, Manoj K. Jha, Catherine L. Kling, Raghavan Srinivasan, Michael White, Jeffrey G. Arnold 2017 Iowa State University

Impacts Of Climate Change On Hydrology, Water Quality And Crop Productivity In The Ohio-Tennessee River Basin, Yiannis Panagopoulos, Philip W. Gassman, Raymond W. Arritt, Daryl E. Herzmann, Todd D. Campbell, Adriana Valcu, Manoj K. Jha, Catherine L. Kling, Raghavan Srinivasan, Michael White, Jeffrey G. Arnold

Catherine Kling

Nonpoint source pollution from agriculture is the main source of nitrogen and phosphorus in the stream systems of the Corn Belt region in the Midwestern US. The eastern part of this region is comprised of the Ohio-Tennessee River Basin (OTRB), which is considered a key contributing area for water pollution and the Northern Gulf of Mexico hypoxic zone. A point of crucial importance in this basin is therefore how intensive corn-based cropping systems for food and fuel production can be sustainable and coexist with a healthy water environment, not only under existing climate but also under climate change conditions in ...


Incentives To Boost Conservation Tillage Adoption, Lyubov A. Kurkalova, Catherine L. Kling 2017 Iowa State University

Incentives To Boost Conservation Tillage Adoption, Lyubov A. Kurkalova, Catherine L. Kling

Catherine Kling

With increasing public demand for clear air and clean water, many inside and outside Washington, D.C., have suggested that federal farm income support should be tied to enhanced conservation practices.


Utah Urban Small-Scale Mixed Vegetable Production Costs And Returns - 5 Acres, 2015, Kynda Curtis, Shawn Olsen, Katie Wagner 2017 Utah State University

Utah Urban Small-Scale Mixed Vegetable Production Costs And Returns - 5 Acres, 2015, Kynda Curtis, Shawn Olsen, Katie Wagner

Shawn Olsen

Sample costs and returns to produce mixed vegetables under drip irrigation and sold through direct markets in the Davis, Salt Lake, and Utah County of Utah are presented in this fact sheet. It is intended to be a guide used to make production decisions,determine potential returns and prepare business and marketing plans.


Nurse Cropping In Potato Systems, John M. Jemison Jr. 2017 University of Maine Cooperative Extension

Nurse Cropping In Potato Systems, John M. Jemison Jr.

Cooperative Extension - Agriculture

In the summer of 2016, a study was conducted at the Rogers Farm in Stillwater, Maine to study the effect of short-term nurse crops on potato yield and quality. The study was designed as a randomized complete block design with six replications. The study compared two sowing rates (winter rye at 100 vs. 200 lbs/ac) to 20 lbs of annual ryegrass or a check plot (no nurse crop). In addition, each of the winter rye treatments was either killed with an herbicide prior to one-pass hilling or just hilled. To address the question of how long to grow a ...


Use Of Endomaxx Mycorrhizal Seed Treatment To Improve Potato Production In Maine, John M. Jemison Jr. 2017 University of Maine Cooperative Extension

Use Of Endomaxx Mycorrhizal Seed Treatment To Improve Potato Production In Maine, John M. Jemison Jr.

Cooperative Extension - Agriculture

With the increasing cost of fertilizer and the ever-decreasing supply of apatite worldwide, improving phosphorus (P) uptake should be a goal for all producers. Due to our high levels of iron and aluminum oxides in Maine soils, P efficiency is very poor. As a result, potato farmers tend to over apply P to ensure that their crop will have adequate P. Over time, this has led to increasing plant available soil test P levels. I recently requested the Maine Soil Test Lab director for potato soil tests over the past ten years. The percentage of soils testing above 40 lbs ...


Setting Up Living Trusts, Neil E. Harl 2017 Iowa State University

Setting Up Living Trusts, Neil E. Harl

Neil E. Harl

The recent enthusiasm for setting up revocable living trusts is supported by two pluses — (1) a way to assure flexibility in management for property in those later years when individuals may not be in a good position to manage their assets and (2) an opportunity for some simplification in estate settlement. However, several factors of a technical or practical nature should be taken into account before the decision is made to establish a revocable living trust.


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