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6,903 full-text articles. Page 1 of 158.

A Systems Modeling Approach To Forecast Corn Economic Optimum Nitrogen Rate, Laila A. Puntel, John E. Sawyer, Daniel W. Barker, Peter J. Thorburn, Michael J. Castellano, Kenneth J. Moore, Andy VanLoocke, Emily A. Heaton, Sotirios V. Archontoulis 2018 Iowa State University

A Systems Modeling Approach To Forecast Corn Economic Optimum Nitrogen Rate, Laila A. Puntel, John E. Sawyer, Daniel W. Barker, Peter J. Thorburn, Michael J. Castellano, Kenneth J. Moore, Andy Vanloocke, Emily A. Heaton, Sotirios V. Archontoulis

Agronomy Publications

Historically crop models have been used to evaluate crop yield responses to nitrogen (N) rates after harvest when it is too late for the farmers to make in-season adjustments. We hypothesize that the use of a crop model as an in-season forecast tool will improve current N decision-making. To explore this, we used the Agricultural Production Systems sIMulator (APSIM) calibrated with long-term experimental data for central Iowa, USA (16-years in continuous corn and 15-years in soybean-corn rotation) combined with actual weather data up to a specific crop stage and historical weather data thereafter. The objectives were to: (1) evaluate the ...


The Effect Of Two Planting Dates And Methods On Snap Bean (Phaseolus Vulgaris) Production In A Tunnel House, Edward Sparks, Victor Khan, Ramble Ankumah, James E. Currington, Nathaniel Ellison, George X. Hunter Jr., Jeffery L. Moore 2018 Tuskegee University

The Effect Of Two Planting Dates And Methods On Snap Bean (Phaseolus Vulgaris) Production In A Tunnel House, Edward Sparks, Victor Khan, Ramble Ankumah, James E. Currington, Nathaniel Ellison, George X. Hunter Jr., Jeffery L. Moore

Professional Agricultural Workers Journal

The study was conducted to evaluate the impact of two planting dates and methods on snap bean yields in a tunnel house. The main plots included planting dates March 17 and 31, 2016 for first and second plantings. The sub-plots consisted of planting Method 1 where one seed per hill was planted every 4” apart, and planting Method 2 where three seeds per hill were planted every 12” apart; each treatment combination was replicated four times. The results of the study showed that it took 55 days for the snap beans to be ready for harvest for both planting dates ...


Discovering Agriculture-Related Careers Through Cypress, Audrey McCrary-Quarles, Christopher C. Mathis Jr. 2018 South Carolina State University

Discovering Agriculture-Related Careers Through Cypress, Audrey Mccrary-Quarles, Christopher C. Mathis Jr.

Professional Agricultural Workers Journal

The primary objective of the Combining Youth Passion and Resources for Environmental Sciences Studies (CYPRESS) Project was to increase awareness and generate interest among minority students regarding agriculture-related careers, in rural SC. The students participated in 4H after-school programs, summer camps, and an Ag-Science course. There were also workshops for teachers and parents for them to support the students. Data from the project were analyzed using pre- and post-survey methods. The results revealed that 26% of 4H after-school participants were interested in pursuing agriculture-related careers; 43% of summer camp participants were interested in pursuing such careers, and 5% of the ...


Analysis Of Hispanic School And College Enrollment In South Carolina, 2010 - 2014, Christopher C. Mathis Jr., Shobba R. Choudhari 2018 South Carolina State University

Analysis Of Hispanic School And College Enrollment In South Carolina, 2010 - 2014, Christopher C. Mathis Jr., Shobba R. Choudhari

Professional Agricultural Workers Journal

No abstract provided.


Abridged Submission Guidelines For Manuscripts For The Professional Agricultural Workers Journal (Pawj), 2018 Tuskegee University

Abridged Submission Guidelines For Manuscripts For The Professional Agricultural Workers Journal (Pawj)

Professional Agricultural Workers Journal

No abstract provided.


Table Of Contents, 2018 Tuskegee University

Table Of Contents

Professional Agricultural Workers Journal

No abstract provided.


Yield Of Two Sweetpotato (Ipomoea Batatas (L.) Cultivars Grown In A Wiregrass Model Tunnel House Under Trellised And Conventional Planting Systems, Veronica E. Walton, Raymon Shange, Victor Khan, James E. Currington, Ramble Ankumah, Edward Sparks, Nathaniel Ellison, George X. Hunter Jr., Jeffery L. Moore 2018 Tuskegee University

Yield Of Two Sweetpotato (Ipomoea Batatas (L.) Cultivars Grown In A Wiregrass Model Tunnel House Under Trellised And Conventional Planting Systems, Veronica E. Walton, Raymon Shange, Victor Khan, James E. Currington, Ramble Ankumah, Edward Sparks, Nathaniel Ellison, George X. Hunter Jr., Jeffery L. Moore

Professional Agricultural Workers Journal

No abstract provided.


An Analysis Of The Characteristics And Practices Of Selected Florida Small Livestock Producers: A Focus On Production And Processing, Jannette R. Bartlett, David Nii O. Tackie, Dana Reid, Akua Adu-Gyamfi, Angela McKenzie-Jakes 2018 Tuskegee University

An Analysis Of The Characteristics And Practices Of Selected Florida Small Livestock Producers: A Focus On Production And Processing, Jannette R. Bartlett, David Nii O. Tackie, Dana Reid, Akua Adu-Gyamfi, Angela Mckenzie-Jakes

Professional Agricultural Workers Journal

The study assessed the characteristics and practices of small livestock producers, emphasizing production and processing. Data were obtained from a convenience sample of seventy small producers from selected counties in Florida, and analyzed using descriptive statistics, including chi-square tests. The socioeconomic characteristics showed that part-time producers, White producers, middle-aged producers, fairly educated producers, and moderate-income producers dominated the group. A majority of the producers practiced rotational grazing, fed a combination of forage and concentrate, and less than half conducted soil tests regularly. Moreover, over half had parasite problems and treated them primarily with anthelmintics. Nearly all producers sold animals live ...


Optimal Stratification And Allocation For The June Agricultural Survey, Cigna, Hejian Sang, Zhengyuan Zhu, Stephanie Zimmer 2018 Iowa State University

Optimal Stratification And Allocation For The June Agricultural Survey, Cigna, Hejian Sang, Zhengyuan Zhu, Stephanie Zimmer

Statistics Publications

A computational approach to optimal multivariate designs with respect to stratification and allocation is investigated under the assumptions of fixed total allocation, known number of strata, and the availability of administrative data correlated with thevariables of interest under coefficient-of-variation constraints. This approach uses a penalized objective function that is optimized by simulated annealing through exchanging sampling units and sample allocations among strata. Computational speed is improved through the use of a computationally efficient machine learning method such as K-means to create an initial stratification close to the optimal stratification. The numeric stability of the algorithm has been investigated and parallel ...


Annual Net Returns To Cover Crops In Iowa, Alejandro Plastina, Fangge Liu, Wendiam Sawadgo, Fernando E. Miguez, Sarah Carlson, Guillermo Marcillo 2018 Iowa State University

Annual Net Returns To Cover Crops In Iowa, Alejandro Plastina, Fangge Liu, Wendiam Sawadgo, Fernando E. Miguez, Sarah Carlson, Guillermo Marcillo

Economics Working Papers

Despite the active promotion of cover crops as a key conservation practice, their adoption is very limited. We developed a series of partial budgets based on a statewide survey of Iowa farmers to evaluate the changes in net returns resulting from the incorporation of cover crops into a corn or soybean production system. The average net returns to cover crops use for farmers that did not use cover crops for grazing livestock or forage were consistently negative across different planting and termination methods, tillage practices, and experience levels. Only farmers that used cover crops for grazing livestock or forage, and ...


Cases, Regulations And Statutes, Robert P. Achenbach Jr 2018 Iowa State University

Cases, Regulations And Statutes, Robert P. Achenbach Jr

Agricultural Law Digest

No abstract provided.


After Repeal Of The “Small Partnership” In 2015, What Next?, Neil E. Harl 2018 Iowa State University

After Repeal Of The “Small Partnership” In 2015, What Next?, Neil E. Harl

Agricultural Law Digest

After a shocking and unannounced repeal of the “small partnership” provision in late 2015, as part of the Bipartisan Budget Act of 2015,1 which was enacted as part of the Tax Equity and Fiscal Responsibility of 1982, the stunned users of that part of the 1982 Act began to raise questions. When does it go into effect? Will I end up with partnership status? Will I have a choice on what I can shift to? Will that shift be automatic or will it be an election? In the 27 months which have elapsed since enactment, not one word has ...


Cases, Regulations And Statutes, Robert P. Achenbach Jr 2018 Iowa State University

Cases, Regulations And Statutes, Robert P. Achenbach Jr

Agricultural Law Digest

No abstract provided.


The “Gallenstein” Rule: Slowly Slipping Away, Neil E. Harl 2018 Iowa State University

The “Gallenstein” Rule: Slowly Slipping Away, Neil E. Harl

Agricultural Law Digest

Most legal rules exist until the rule is repealed, the rule comes to the end of its stated term or is held to be unconstitutional. But one, the so-called “Gallenstein” Rule, which has been in existence only for 26 years, is slowly slipping into oblivion. That rule, the indirect product of the 1976 amendment of joint tenancy rules,1 did not emerge until 1991 when the case of Gallenstein v. United States was decided by the Federal District Court of the Eastern District of Kentucky and the case was later affirmed by the Sixth Circuit Court of Appeals.2


How Will The Section 199(A) Tax Deduction Affect Cooperatives?, Greg McKee 2018 University of Nebraska-Lincoln

How Will The Section 199(A) Tax Deduction Affect Cooperatives?, Greg Mckee

Cornhusker Economics

The design of the income tax code reflects the special role of patronage equity in cooperative finance. Federal tax laws and policies allow agricultural cooperatives to retain net income as a source of equity capital by giving special tax deductions when income is allocated to patrons in proportion to their business with the cooperative. Income distribution choices by cooperatives have tax consequences.


Characteristics Contributing To Nebraska Farm And Ranch Financial Stress, Kate Brooks, Cory Walters, Jay Parsons, Andrea Ramirez, Larry Van Tassell, Bradley D. Lubben, J. David Aiken 2018 University of Nebraska-Lincoln

Characteristics Contributing To Nebraska Farm And Ranch Financial Stress, Kate Brooks, Cory Walters, Jay Parsons, Andrea Ramirez, Larry Van Tassell, Bradley D. Lubben, J. David Aiken

Cornhusker Economics

Significant financial changes have been underway in the U.S. agricultural system. After a decade of increases in crop and livestock prices mirrored by corresponding increases in expenses, prices began declining dramatically in 2014 (USDA-NASS, 2017). Figure 1 shows yearly net farm income for Nebraska crop and livestock producers from 2000 to 2015 (USDA, ERS). A survey in July 2016 indicated that 52 percent of Nebraska farmers and ranchers were financially stressed.


Points To Watch With Revocable Trusts, Neil E. Harl 2018 Iowa State University

Points To Watch With Revocable Trusts, Neil E. Harl

Agricultural Law Digest

Revocable trusts go by several names – living trusts, inter vivos trusts, revocable trusts, grantor trusts – but regardless of name, the trusts bearing any of the names are basically the same, although such trusts should be read with care because the language used in the trust may affect the ultimate disposition of the property held in the trust. With such a trust, the grantor creates the trust by executing a trust agreement and ordinarily funds the trust by transferring property to the trust during the life of the grantor.


Cases, Regulations And Statutes, Robert P. Achenbach Jr 2018 Iowa State University

Cases, Regulations And Statutes, Robert P. Achenbach Jr

Agricultural Law Digest

No abstract provided.


Sweet Sorghum As An Ethanol Feedstock In Western Nebraska – Could It Happen?, Richard Perrin, Lilyan Fulginiti, Subir Bairagi, Ismail Dweikat 2018 University of Nebraska - Lincoln

Sweet Sorghum As An Ethanol Feedstock In Western Nebraska – Could It Happen?, Richard Perrin, Lilyan Fulginiti, Subir Bairagi, Ismail Dweikat

Cornhusker Economics

It has been proposed that non-irrigated sweet sorghum might be grown in western Nebraska as a seasonal substitute for corn grain in corn ethanol plants. In the research summarized here, we examine the economic feasibility of this possibility, based on the technical data that are currently available about sweet sorghum production.


Soybean Functional Genomics: Bridging The Genotype-To-Phenotype Gap, Jamie A. O'Rourke, Michelle A. Graham, Steven A. Whitham 2018 United States Department of Agriculture

Soybean Functional Genomics: Bridging The Genotype-To-Phenotype Gap, Jamie A. O'Rourke, Michelle A. Graham, Steven A. Whitham

Steven Whitham

Technological advances coupled with the economic importance of soybean have led to increased efforts to understand gene function and associate genes with phenotypes of agronomic and fundamental interest. Functional genomics approaches aim to develop sufficient understanding needed to bridge the genotype-to-phenotype gap. In general terms, functional genomics approaches begin by using highly parallelized methods to analyze genomes, transcriptomes, proteomes, and metabolomes to generate hypotheses about genes that control phenotypes. Candidate genes are then tested for their contributions to phenotypes through various methods such as RNA silencing, genetic mutation, or overexpression. In this chapter, we review the current approaches, tools, and ...


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