Agriculture Commons^™

Operationalizing The Telecoupling Framework For Migratory Species Using The Spatial Subsidies Approach To Examine Ecosystem Services Provided By Mexican Free-Tailed Bats, Laura López-Hoffman, Jay E. Diffendorfer, Ruscena Wiederholt, Kenneth J. Bagstad, Wayne E. Thogmartin, Gary F. Mccracken, Rodrigo A. Medellín, Amy L. Russell, Darius J. Semmens

Amy L. Russell

Governance Rules And Bargaining Power In Sustainability Alliances, Matthew Elliott, Lisa Elliott

Matthew Elliott

Indigenous Experiences In Agricultural Production In Ecuador: Sustaining And Ancient Cultural Tradition Of Growing And Consuming Quinoa, Sumac Elisa Cárdenas Oleas

Elisa Cardenas

Colonialization’s racism and discrimination in Latin America have pushed many indigenous populations to poverty in isolated rural areas with limited access to resources, education, and technology, particularly as relates to agriculture, their main source of income and employment. Governments and development organizations recognize agriculture as a key channel for developmental growth in rural areas. Fundamyf, a non-governmental organization, has focused on promoting agricultural growth to increase the quality of life of small-scale indigenous producers through the production, consumption, and sale of quinoa. While quinoa is an ancient crop traditionally consumed and produced by indigenous populations in the Andes of South …

Impacts Of The Food Safety Modernization Act On On-Farm Food Safety Practices For Small And Sustainable Produce Growers, Aaron Adalja, Erik Lichtenberg

Aaron Adalja

We use data from a national survey of fruit and vegetable growers to examine the current prevalence and cost burden of food safety practices required in the proposed Produce Rule implementing the Food Safety Modernization Act. In particular, we analyze the influence of farm size and farming practices on the probability of adopting food safety measures that would be required by the Produce Rule; and we analyze how the costs of using those food safety practices vary by farm size and farm practices. Majorities of our respondents currently employ most of the food safety practices that would be required under …

Harnessing Wastewater For Renewable Energy (2013-2), Aaron Adalja, Chalida U-Tapao

Aaron Adalja

This case study explores the options for using wastewater to produce renewable energy in the context of a public wastewater treatment plant. It provides an opportunity for students to synthesize knowledge from resource economics, engineering, environmental science, agriculture, and public policy to develop a transdisciplinary approach to a socio-environmental issue. The case is designed for upper division undergraduate courses in resource economics or environmental engineering, but several modifications are provided graduate course applications. Students assume the role of a newly hired analyst at a consulting firm in Washington, DC, that specializes in renewable energy solutions. They are charged with proposing …

Trends In U.S. Local And Regional Food Systems: A Report To Congress, Sarah A. Low, Aaron Adalja, Elizabeth Beaulieu, Nigel Key, Steve Martinez, Alex Melton, Agnes Perez, Katherine Ralston, Hayden Stewart, Shellye Suttles, Becca B.R. Jablonski

Aaron Adalja

This report provides an overview of local and regional food systems across several dimensions. It details the latest economic information on local food producers, consumers, and policy, relying on findings from several national surveys and a synthesis of recent literature to assess the current size of and recent trends in local and regional food systems. Data are presented on producer characteristics, survival rates and growth, and prices. The local food literature on consumer willingness to pay, environmental impacts, food safety regulations, and local economic impacts is synthesized when nationally representative data are unavailable. Finally, this report provides an overview of …

Adoption And Coexistence Of Ge, Conventional Non-Ge, And Organic Crops, Aaron Adalja, Catherine Greene, James Hanson, Robert Ebel, Michael Barron

Aaron Adalja

The adoption of genetically engineered (GE) crop varieties by U.S. farmers is widespread for major crops—94 percent of planted acres for soybeans, and 88 percent for corn in 2012 (USDA-NASS 2012). The potential exists for GE crop production to impose costs on organic and conventional non-GE production via unintended presence of GE material along the supply chain through: • Contamination of seed stock • Accidental cross-pollination • Accidental co-mingling during planting, harvesting, handling, and storing of crops (Bullock and Desquilbet 2002). Maintaining the integrity of GE-differentiated product markets relies on segregation protocols such as: • Hybrid selection and seed purity …

The Impact Of Separating Fed From Nonfed Beef In An Econometric Simulation , Dyaa Kamal Adbou Ahmed Kamal-Abdou

Ahmed Kamal

No abstract provided.

Analysis Of Asynchronous Supplemental Course Modules In Statistical Process Control, Matthew E. Harvey, John R. Haughery, Sai K. Ramaswamy

Sai Ramaswamy

Many engineering and technology departments at the collegiate level have developed extensive online and hybrid (face-to-face and online) course offerings (Bourne, Harris, & Mayadas, 2005). These courses may meet several goals such as increasing access, reducing university costs, providing schedule flexibility, and increasing curriculum offerings. An additional opportunity for computer-based learning is to increase student success by offering asynchronous learning modules to extend content beyond traditional lectures.

Applying Biodiversity And Ecosystem Function Theory To Turfgrass Management, Grant L. Thompson, Jenny Kao-Kniffin

Grant Thompson

Thesis Document 07172017 Revised.Pdf, Jesse Gray

Jesse Gray

Impact Of Nitrogen Application Timing On Corn Production, John E. Sawyer, Daniel W. Barker, John P. Lundvall

John E. Sawyer

Water quality issues have renewed interest in timing of nitrogen (N) application as a means to improve use efficiency in corn and reduce losses. Improved economic return is also desired as N fertilization is one of the most costly inputs to corn production. Time of fertilizer application is a component of the site-specific 4R nutrient management stewardship programs. In Iowa, the Nutrient Reduction Strategy has a 7% (37% std. dev.) nitrate-N reduction with a 0% (3% std. dev.) corn yield change for sidedress compared to pre-plant N application (SP 0435A).

Crop Responses To Amisorb In The North Central Region, Sylvie Brouder, Robert Dowdy, Dave Franzen, Gary Hergert, Robert Hoeft, Maurice Horton, Keith Kelling, David Mengel, George Rehm, John Sawyer, Peter Scharf, Darryl Warnacke, David Whitney

John E. Sawyer

Originally used to prevent scale in boilers, carpramid or thermal polyaspartate (copoly[(3-carboxypropionamide)( 2-carboxylmethyl) acetamide)] was brought to agriculture under the trade names AmiSorb and Magnet. It claimed to increase nutrient uptake through artificially increasing the volume of soil occupied by roots through increased root branching and root hair development. Under controlled hydroponic or greenhouse conditions, the use of carpramid increased nutrient uptake, some yield determining factors such as wheat tillering and in some cases, crop yield. Extensive field testing from 1996 to 1998 under various nutrient regimes, placements, forms, and timings resulted in very inconsistent performance. Averaged across all experiments …

Nitrogen Fertilizer Rate Effects On Soil Organic Carbon In Iowa Continuous Corn And Corn-Soybean Systems, Hanna J. Poffenbarger, Daniel W. Barker, Matthew J. Helmers, Fernando E. Miguez, John E. Sawyer, Johan Six, Michael J. Castellano

John E. Sawyer

Nitrogen fertilizer rate is a key factor affecting soil organic C (SOC) in corn-based cropping systems. The objective of this study was to determine the change in SOC in response to long-term N rates for continuous corn and corn-soybean cropping systems at two sites in Iowa. Soil samples were collected to a depth of 15 cm in 1999 and again in 2014 after 15 years of corn N rate treatments ranging from 0 to 269 kg ha^-1. The soil samples were analyzed for total C and N concentrations. For continuous corn at both sites, the average annual change …

A Brief Review On Leading Big Data Models, Sugam Sharma, Udoyara S. Tim, Johnny S. Wong, Shashi Gadia, Subhash Sharma

Sugam Sharma

Today, science is passing through an era of transformation, where the inundation of data, dubbed data deluge is influencing the decision making process. The science is driven by the data and is being termed as data science. In this internet age, the volume of the data has grown up to petabytes, and this large, complex, structured or unstructured, and heterogeneous data in the form of “Big Data” has gained significant attention. The rapid pace of data growth through various disparate sources, especially social media such as Facebook, has seriously challenged the data analytic capabilities of traditional relational databases. The velocity …

Contextual Motivation In Physical Activity By Means Of Association Rule Mining, Sugam Sharma, Udoyara Sunday Tim, Marinelle Payton, Hari Cohly, Shashi Gadia, Johnny Wong, Sudharshanam Karakala

Sugam Sharma

The primary thrust of this work is to demonstrate the applicability of association rule mining in public health domain, focusing on physical activity and exercising. In this paper, the concept of association rule mining is shown assisting to promote the physical exercise as regular human activity. Specifically, similar to the prototypical example of association rule mining, market basket analysis, our proposed novel approach considers two events – exercise (sporadic) and sleep (regular) as the two items of the frequent set; and associating the former, exercise event, with latter, the daily occurring activity sleep at night, helps strengthening the frequency of …

A Smartphone-Based Device For Measuring Soil Organic Matter, Meng Lu

Meng Lu

The project evaluated the potential of utilizing a smartphone-based system for the in-field analysis of Soil Organic Matter. Although it demonstrated that the performance of the smartphone-based spectrometer can be comparable to commercial spectrometers, the results suggest that it is challenging to identify the spectral “signatures” of the SOM due to the morphology and moisture variation of soil samples.

A Brief Review On Leading Big Data Models, Sugam Sharma, Udoyara S. Tim, Johnny S. Wong, Shashi Gadia, Subhash Sharma

Johnny Wong

Today, science is passing through an era of transformation, where the inundation of data, dubbed data deluge is influencing the decision making process. The science is driven by the data and is being termed as data science. In this internet age, the volume of the data has grown up to petabytes, and this large, complex, structured or unstructured, and heterogeneous data in the form of “Big Data” has gained significant attention. The rapid pace of data growth through various disparate sources, especially social media such as Facebook, has seriously challenged the data analytic capabilities of traditional relational databases. The velocity …

Contextual Motivation In Physical Activity By Means Of Association Rule Mining, Sugam Sharma, Udoyara Sunday Tim, Marinelle Payton, Hari Cohly, Shashi Gadia, Johnny Wong, Sudharshanam Karakala

Johnny Wong

The primary thrust of this work is to demonstrate the applicability of association rule mining in public health domain, focusing on physical activity and exercising. In this paper, the concept of association rule mining is shown assisting to promote the physical exercise as regular human activity. Specifically, similar to the prototypical example of association rule mining, market basket analysis, our proposed novel approach considers two events – exercise (sporadic) and sleep (regular) as the two items of the frequent set; and associating the former, exercise event, with latter, the daily occurring activity sleep at night, helps strengthening the frequency of …

Winter Grazing Management, Stephen K. Barnhart, James R. Russell, Douglas L. Karlen, Michael J. Tidman

Douglas L Karlen

Why winter grazing? Beef cow herd and sheep flock records show that winter feeding costs are livestock producers' single largest production expense. Managing through winter weather while keeping feeding costs low is an essential part of maintaining a profitable operation. Iowa's climate generally allows forage growth only during a 7-to-8 month period. Extending the grazing of this forage--even an extra 3 or 4 weeks in late autumn and winter--is an economical way to maintain or increase livestock profitability. Some producers extend the grazing season by using stockpiled forage, whereas others use crop residue, and many combine the use of stockpiled …

N-Management And Crop Rotation Effects On Yield And Residual Soil Nitrate Levels, A. Bakhsh, R. S. Kanwar, D. L. Karlen, C. A. Cambardella, T. B. Bailey, T. B. Moorman, T. S. Colvin

Douglas L Karlen

Swine production facilities are becoming more concentrated in Iowa, and public is concerned about the impact of using swine manure for crop production on soil and water quality. This field study was conducted from 1996 to 1998 to compare the effects of liquid swine manure and urea ammonium nitrate (UAN) application on crop yield and residual soil nitrate for continuous corn (Zea mays L.) and corn-soybean (Glycine max (L.) Merr.) rotation systems. Six N management treatments were replicated three times in a randomized complete block design at Iowa State University's northeastern research center in Nashua, Iowa. Injected UAN provided 135 …

Relations Between 4-H Enrollment And Selected Characteristics Of Tennessee's County 4-H Extension Programs, Syed Zubair Ahmad

Zubair Ahmad

The study was concerned with the problem of decreasing county 4-H enrollment in Tennessee. Twenty-one independent variables concerning the characteristics of Tennessee's county 4-H Extension programs and five independent variables concerning total 4-H enrollment were studied. The independent variables were classified under the headings of 4-H leadership, organization, participation, place of 4-H member residence, potential number of 4-H members, and number of Extension staff members. The purpose was to identify the association between the selected variables concerning county 4-H programs and the total 4-H enrollment in the Tennessee counties. Another purpose was to determine which variable, within each group of …

J. C. Penney: The Man, The Store And American Agriculture, David Delbert Kruger

David Delbert Kruger

When Discharge Of Indebtedness Occurs In Bankruptcy, Neil Harl

Neil E. Harl

The farm debt crisis of the 1980’s left numerous legacies, not the least of which is the continuing discharge of indebtedness from formal and informal resolutions of excessive debt. The various rules on when discharge of indebtedness occurs have created surprising and painful results for some taxpayers.

Single Class Of Stock In S Corporations, Neil Harl

Neil E. Harl

Almost from the day of enactment of Subchapter S of the Internal Revenue Code in 1958, the single class of stock requirement has generated questions that have led to extensive litigation, repeated attempts to address the issues by regulation and numerous rulings in an effort to resolve the issues involved. The major area of concern has been the line between debt securities and equity interests, particularly where the debt securities represented shareholder loans.

When Discharge Of Indebtedness Occurs If The Debtor Is Not In Bankruptcy, Neil Harl

Neil E. Harl

As was noted in the March 30, 1990 issue of Agricultural Law Digest, whether discharge of indebtedness occurs for debtors in bankruptcy depends upon the chapter of the Bankruptcy Code. For Chapter 12 debtors, discharge of indebtedness takes place upon completion of payments under the plan. For debtors not in bankruptcy, the rules for when discharge of indebtedness take place are different and the consequences are also quite different.

Transfer Of Residence With Continued Occupancy, Neil Harl

Neil E. Harl

The rule has been well established that a transfer of a residence to a spouse with occupancy by the transferring spouse until death, would not result in inclusion of the value of the residence in the transferor's gross estate under a theory of a retained life estate. The courts have consistently required proof of at least an implied agreement between the husband and wife (assuming the transferring spouse continued occupancy) before that spouse is held to have retained possession or enjoyment so as to require inclusion of the residence in the gross estate. If the transferor is to prevail, it …

Taxing Joint Tenancy Property, Neil Harl

Neil E. Harl

Although joint tenancy (and tenancy by the entirety in the few states where that form of co-ownership is recognized) is apparently used less frequently than three or four decades ago, joint ownership is still widely used, particularly for real property co-ownership. A recent decision has focused attention on the issue of income tax basis of joint tenancy (or tenancy by the entirety) property after the death of the first joint tenant to die.

Deferred Payment Sales: Amt Liability, Neil E. Harl

Neil E. Harl

Since enactment of the Installment Sales Revision Act of 1980, which permitted the installment sale of grain and livestock, questions have been raised regarding the continuing availability of the deferred payment procedure established by cases and rulings. In recent years, the importance of the question of whether both procedures can be used has been magnified by the 1986 enactment subjecting installment sales of inventory property to potential liability for alternative minimum tax.6 A recent IRS technical advice memorandum (TAM) has provided some insight to the IRS national office position on the two issues — (1) are installment sales of inventory …

Gifts Of Grain And Other Farm Commodities, Neil E. Harl

Neil E. Harl

The sale of assets held by the taxpayer primarily for sale to customers in the ordinary course of business (such as grain or market livestock) usually produces ordinary income. That rule has encouraged gifts of grain and other farm commodities to spouses, children, grandchildren or other family members who are not considered to be holding the gift property for sale to customers. The outcome is capital asset treatment for gains and avoidance of liability for self-employment tax.