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Long-Term Impact Of Poultry Manure On Crop Yield, Soil And Water Quality, And Crop Revenue, Natasha L. Hoover, Ji Yeow Law, Leigh Ann M. Long, Rameshwar S. Kanwar, Michelle L. Soupir 2019 Iowa State University

Long-Term Impact Of Poultry Manure On Crop Yield, Soil And Water Quality, And Crop Revenue, Natasha L. Hoover, Ji Yeow Law, Leigh Ann M. Long, Rameshwar S. Kanwar, Michelle L. Soupir

Agricultural and Biosystems Engineering Publications

A long-term poultry manure fertilizer study was initiated in 1998 and continued until 2009 under corn-soybean (CS) rotation. To match changing landscape trends, the plots were switched to continuous corn (CC) from 2010 to 2017. In both CS and CC phases, poultry manure (PM) was applied at the crop rotation recommended agronomic N rate and either half (CC phase) or double (CS phase) the recommended rate. Urea-ammonium nitrate (UAN) was applied to comparison plots at the crop recommended application rate (168 kg N ha−1 and 224 kg N ha−1 for the CS and CC phases, respectively) throughout the ...


Science-Based Intensive Agriculture: Sustainability, Food Security, And The Role Of Technology, Jim Gaffney, James Bing, Patrick F. Byrne, Kenneth G. Cassman, Ignacio Ciampitti, Deborah Delmer, Jeffrey Habben, H. Renee Lafitte, Ulrika E. Lidstrom, Dana O. Porter, John E. Sawyer, Jeff Schussler, Tim Setter, Robert E. Sharp, Tony J. Vyn, David Warner 2019 Corteva Agriscience

Science-Based Intensive Agriculture: Sustainability, Food Security, And The Role Of Technology, Jim Gaffney, James Bing, Patrick F. Byrne, Kenneth G. Cassman, Ignacio Ciampitti, Deborah Delmer, Jeffrey Habben, H. Renee Lafitte, Ulrika E. Lidstrom, Dana O. Porter, John E. Sawyer, Jeff Schussler, Tim Setter, Robert E. Sharp, Tony J. Vyn, David Warner

Agronomy Publications

Sustainable agriculture describes crop management approaches that address the interdependent goals of increasing or at least maintaining yield while protecting the environment, conserving natural resources, and slowing climate change. Numerous authors have espoused limiting synthetic fertilizer and pesticides and promoting organic agriculture (Lechenet et al., 2014; Martinez-Alcantara et al., 2016; Muller at al. 2017), less meat consumption (West et al., 2014; Poore and Nemecek, 2018; Springmann et al., 2018), or combinations of these strategies as viable solutions to achieve those goals, thereby improving agricultural sustainability.


Canavalia And Dolichos Extracts For Sustainable Pest Biocontrol And Plant Nutrition Improvement In El Salvador, Carlos Martinez 2019 University of Nebraska - Lincoln

Canavalia And Dolichos Extracts For Sustainable Pest Biocontrol And Plant Nutrition Improvement In El Salvador, Carlos Martinez

Theses, Dissertations, and Student Research in Agronomy and Horticulture

Botanical repellents and pesticides are now being rediscovered as new tools for integrated pest management in order to reduce the use of toxic chemicals in crop production. Canavalia gladiata and Dolichos lablab are two Fabaceae very well adapted to farmlands of El Salvador, effective as living barriers and mostly as cover crops, however, they are not yet very well disseminated. This document describes the potential for using the liquid extracts and the dry flour of raw seeds of those plants for economic benefit and practical convenience for pest management in Salvadorian agriculture under field conditions. Seed extracts were useful when ...


Design And Validation Of A Mobile Air Filter Testing Laboratory For Animal Agricultural Applications, Benjamin C. Smith, Brett C. Ramirez, Steven J. Hoff, Jay D. Harmon, John P. Stinn 2019 Iowa State University

Design And Validation Of A Mobile Air Filter Testing Laboratory For Animal Agricultural Applications, Benjamin C. Smith, Brett C. Ramirez, Steven J. Hoff, Jay D. Harmon, John P. Stinn

Steven J. Hoff

The US swine industry is shifting towards filtered fresh-air ventilation systems that use pleated filters to improve breeding herd health and reduce airborne disease outbreak frequency. Loaded filters reduce airflow causing a poor environment and elevated energy use. Typical axial fans cannot efficiently maintain the rated differential pressure (DP; 100 Pa) for pleated filters; hence, a lower design filter DP (37 Pa) is used and consequently, more filters are required to achieve design maximum ventilation. Large, common filter banks for multiple staged fans presents significant challenges in using continuous DP measurement to assess filter life, making it impossible to separate ...


Design And Validation Of A Mobile Air Filter Testing Laboratory For Animal Agricultural Applications, Benjamin C. Smith, Brett C. Ramirez, Steven J. Hoff, Jay D. Harmon, John P. Stinn 2019 Iowa State University

Design And Validation Of A Mobile Air Filter Testing Laboratory For Animal Agricultural Applications, Benjamin C. Smith, Brett C. Ramirez, Steven J. Hoff, Jay D. Harmon, John P. Stinn

Jay D. Harmon

The US swine industry is shifting towards filtered fresh-air ventilation systems that use pleated filters to improve breeding herd health and reduce airborne disease outbreak frequency. Loaded filters reduce airflow causing a poor environment and elevated energy use. Typical axial fans cannot efficiently maintain the rated differential pressure (DP; 100 Pa) for pleated filters; hence, a lower design filter DP (37 Pa) is used and consequently, more filters are required to achieve design maximum ventilation. Large, common filter banks for multiple staged fans presents significant challenges in using continuous DP measurement to assess filter life, making it impossible to separate ...


Design And Validation Of A Mobile Air Filter Testing Laboratory For Animal Agricultural Applications, Benjamin C. Smith, Brett C. Ramirez, Steven J. Hoff, Jay D. Harmon, John P. Stinn 2019 Iowa State University

Design And Validation Of A Mobile Air Filter Testing Laboratory For Animal Agricultural Applications, Benjamin C. Smith, Brett C. Ramirez, Steven J. Hoff, Jay D. Harmon, John P. Stinn

Brett Ramirez

The US swine industry is shifting towards filtered fresh-air ventilation systems that use pleated filters to improve breeding herd health and reduce airborne disease outbreak frequency. Loaded filters reduce airflow causing a poor environment and elevated energy use. Typical axial fans cannot efficiently maintain the rated differential pressure (DP; 100 Pa) for pleated filters; hence, a lower design filter DP (37 Pa) is used and consequently, more filters are required to achieve design maximum ventilation. Large, common filter banks for multiple staged fans presents significant challenges in using continuous DP measurement to assess filter life, making it impossible to separate ...


Long-Term Impact Of Poultry Manure On Crop Yield, Soil And Water Quality, And Crop Revenue, Natasha L. Hoover, Ji Yeow Law, Leigh Ann M. Long, Rameshwar S. Kanwar, Michelle L. Soupir 2019 Iowa State University

Long-Term Impact Of Poultry Manure On Crop Yield, Soil And Water Quality, And Crop Revenue, Natasha L. Hoover, Ji Yeow Law, Leigh Ann M. Long, Rameshwar S. Kanwar, Michelle L. Soupir

Rameshwar S. Kanwar

A long-term poultry manure fertilizer study was initiated in 1998 and continued until 2009 under corn-soybean (CS) rotation. To match changing landscape trends, the plots were switched to continuous corn (CC) from 2010 to 2017. In both CS and CC phases, poultry manure (PM) was applied at the crop rotation recommended agronomic N rate and either half (CC phase) or double (CS phase) the recommended rate. Urea-ammonium nitrate (UAN) was applied to comparison plots at the crop recommended application rate (168 kg N ha−1 and 224 kg N ha−1 for the CS and CC phases, respectively) throughout the ...


Long-Term Impact Of Poultry Manure On Crop Yield, Soil And Water Quality, And Crop Revenue, Natasha L. Hoover, Ji Yeow Law, Leigh Ann M. Long, Rameshwar S. Kanwar, Michelle L. Soupir 2019 Iowa State University

Long-Term Impact Of Poultry Manure On Crop Yield, Soil And Water Quality, And Crop Revenue, Natasha L. Hoover, Ji Yeow Law, Leigh Ann M. Long, Rameshwar S. Kanwar, Michelle L. Soupir

Michelle L. Soupir

A long-term poultry manure fertilizer study was initiated in 1998 and continued until 2009 under corn-soybean (CS) rotation. To match changing landscape trends, the plots were switched to continuous corn (CC) from 2010 to 2017. In both CS and CC phases, poultry manure (PM) was applied at the crop rotation recommended agronomic N rate and either half (CC phase) or double (CS phase) the recommended rate. Urea-ammonium nitrate (UAN) was applied to comparison plots at the crop recommended application rate (168 kg N ha−1 and 224 kg N ha−1 for the CS and CC phases, respectively) throughout the ...


Climate Warming Trends In The U.S. Midwest Using Four Thermal Models, Lori J. Abendroth, Fernando E. Miguez, Michael J. Castellano, Jerry L. Hatfield 2019 Iowa State University

Climate Warming Trends In The U.S. Midwest Using Four Thermal Models, Lori J. Abendroth, Fernando E. Miguez, Michael J. Castellano, Jerry L. Hatfield

Michael Castellano

Thermal time (TT) is an agro-climate index widely established and used in predicting plant development based on temperature. This index is a powerful tool for measuring multi-faceted changes in temperature occurring from climate change. In the present study, TT was calculated for the entire frost-free period and individual spring, summer, and fall seasons using growing degree day (GDD), general thermal index (GTI), crop heat unit (CHU), and heat stress degree day (HSDD) models for 1054 counties across 12 Midwest states on a daily basis from 1950 to 2017. The temporal trend for each county was fit with a linear regression ...


A Novel Environmental Enrichment Device Increased Physical Activity And Walking Distance In Broilers, Meaghan M. Meyer, Anna K. Johnson, Elizabeth A. Bobeck 2019 Iowa State University

A Novel Environmental Enrichment Device Increased Physical Activity And Walking Distance In Broilers, Meaghan M. Meyer, Anna K. Johnson, Elizabeth A. Bobeck

Anna K. Butters-Johnson

Modern broilers are selected for fast growth and a large proportion of breast tissue, contributing to a top-heavy phenotype, leg disorders, and inactivity as birds reach market weight. Therefore, the objective was to motivate broilers to move through environmental enrichment. A total of 1,200 Ross 308 broilers were housed in pens of 30 for 6 wk: 600 birds were exposed to a novel laser enrichment device (LASER) and 600 were control. Each device projected 2 randomly moving red laser dots onto the floor 4 times/day for 4-min “laser periods.” Seven LASER and 7 control pens, with 5 focal ...


A Proactive Blueprint To Demonstrate On-Farm Animal Welfare, Anna K. Johnson, Jessica D. Colpoys, Arlene Garcia, Cassandra Jass, Suzanne T. Millman, Monique D. Pairis-Garcia, Christopher J. Rademacher, Shawna L. Weimer, Samaneh Azarpajouh 2019 Iowa State University

A Proactive Blueprint To Demonstrate On-Farm Animal Welfare, Anna K. Johnson, Jessica D. Colpoys, Arlene Garcia, Cassandra Jass, Suzanne T. Millman, Monique D. Pairis-Garcia, Christopher J. Rademacher, Shawna L. Weimer, Samaneh Azarpajouh

Anna K. Butters-Johnson

Farm animal welfare has become an increasing area of consumer and customer interest globally and this has resulted in dramatic changes related to on-farm accountability. Some markets are demanding an-on farm, transparent and accountable animal welfare program. Knowing what key elements are required is critical. Key elements range from (a) caretaker qualities; (b) record keeping and standard operating procedures (SOP) (c) animal- and resource based measures (d) communication and (e) caretaker empowerment. The ultimate on-farm welfare program goal is to provide the highest animal care. This review paper will provide context to these key elements that in turn can be ...


Kc 4.2: “Principles Text” In Action In Outstanding And Ordinary Landscapes, Nora Mitchell Dr, Steve Brown Dr., Lionella Scazzosi Dr., Jane Lennon Dr., Brenda Barrett 2019 University of Vermont

Kc 4.2: “Principles Text” In Action In Outstanding And Ordinary Landscapes, Nora Mitchell Dr, Steve Brown Dr., Lionella Scazzosi Dr., Jane Lennon Dr., Brenda Barrett

Rural Heritage - Landscapes and Beyond / PATRIMOINE RURAL: Paysages et au-delà

In 2011, the ICOMOS-IFLA International Scientific Committee on Cultural Landscapes (ISCCL)began a cultural project, the World Rural LandscapesInitiative, with the goal of a wide and systematic approach to cultural heritage for rural areas both outstanding and ordinary) that has not been sufficiently developed in the past. A first goal has been achieved: “Principles Concerning Rural Landscape as Heritage” was adopted as a doctrinal text by ICOMOS (Delhi 2017) and translated in English, French, Chinese, Spanish and Arabian (worldrurallandscapes.org).

This Knowledge Café will focus on methods and case studies to implement the main premises and contents of the ...


A Socio-Ecologic Framework Supporting Individuals With Disabilities' Community Living And Participation, Keith M. Christensen 2019 Utah State University

A Socio-Ecologic Framework Supporting Individuals With Disabilities' Community Living And Participation, Keith M. Christensen

Funded Research Records

No abstract provided.


Assessment Of Certified Crop Adviser Experience With And Knowledge Of Early And Mid-Season Soybean Diseases Caused By Oomycetes: 2015, J. Gordon Arbuckle Jr., Nick Kalaitzandonakes, James Kaufman, Alison Robertson 2019 Iowa State University

Assessment Of Certified Crop Adviser Experience With And Knowledge Of Early And Mid-Season Soybean Diseases Caused By Oomycetes: 2015, J. Gordon Arbuckle Jr., Nick Kalaitzandonakes, James Kaufman, Alison Robertson

J. Gordon Arbuckle

This report presents the results of a web-based survey of certified crop advisers (CCAs) conducted as part of the Integrated Management of Oomycete Diseases of Soybean and other Crop Plants Project funded by USDA-NIFA. The survey is part of a project-long effort to engage members of the Certified Crop Adviser program of the American Society of Agronomy and other crop advisers in educational and extension activities to improve their ability to accurately diagnose and manage soybean seedling and root diseases, particularly those caused by oomycetes. The report consists of three sections. This first section describes the survey’s objectives and ...


Molecular Phylogeny Implemented In An Introductory Plant Classification Course, Chao Cai, Jo Ann Banks 2019 Purdue University

Molecular Phylogeny Implemented In An Introductory Plant Classification Course, Chao Cai, Jo Ann Banks

Libraries Faculty and Staff Presentations

Plant classification is one of the core components in undergraduate programs related to plant sciences. Traditionally plant classification courses primarily introduce morphology-based taxonomy because of practical needs in the field. However, the publication of new plant classification systems by Angiosperm Phylogeny Group (APG) using molecular phylogeny methods leads to the trends of using molecular evidence (DNA barcode) for plant identification. In our introductory plant classification course, we included a two-week module (lectures and labs) to introduce key concepts and fundamental skills in molecular phylogeny. Week 1 included concepts of evolutionary tree thinking, data mining in NCBI using BLAST search, and ...


Panel 3 Paper 3.2: Nature, Agriculture And Rural Resilience: Interdependencies Between Natural Protected Areas And Rural Landscapes In Satoyama/Satoumi In Japan, Maya N. Ishizawa 2019 University of Tsukuba

Panel 3 Paper 3.2: Nature, Agriculture And Rural Resilience: Interdependencies Between Natural Protected Areas And Rural Landscapes In Satoyama/Satoumi In Japan, Maya N. Ishizawa

Rural Heritage - Landscapes and Beyond / PATRIMOINE RURAL: Paysages et au-delà

The Capacity Building Workshops on Nature-Culture Linkages in Heritage Conservation (CBWNCL), held at the University of Tsukuba in Japan, gather Asia-Pacific heritage professionals with the aim of creating a platform of mutual-learning and exchange between the culture and nature sectors. In the first workshop on Agricultural Landscapes, from 14 case studies, 5 showed natural protected areas in tense relations with their rural landscape surroundings. However, these agricultural landscapes are essential for protecting natural values, as they form part of their larger ecosystems. In the second workshop on Sacred Landscapes, from 16 case studies, 5 case studies were also agricultural landscapes ...


Volatile Prices And Profi T Margins, Chad Hart, Lee L. Schulz 2019 Iowa State University

Volatile Prices And Profi T Margins, Chad Hart, Lee L. Schulz

Lee Schulz

THE CALENDAR year 2019 has been interesting for agricultural markets. We began the year with record supplies for all of Iowa’s major commodities. However, trade disputes have cast a cloud over growth in crop and livestock usage and weather events and foreign disease outbreaks have sparked quick reversals in commodity prices. Since the first of the year, corn prices have fluctuated by $1.10 per bushel, soybeans by $1.55 per bushel, hogs by $28 per hundredweight, and cattle by $16 per hundredweight. And we’re still only halfway through the year.


Beaver And Aspen : Synergy Among Keystone Species, Stephen Bennett, Nicolaas Bouwes, Paul C. Rogers 2019 Selected Works

Beaver And Aspen : Synergy Among Keystone Species, Stephen Bennett, Nicolaas Bouwes, Paul C. Rogers

Nicolaas Bouwes

In the West, climate change is likely to increase the frequency, intensity, and duration of drought. Restoration of soils and water storage capacity can help create resilient uplands and riverscapes (i.e., streams and the valley bottoms). Over the past two centuries, common land uses, the removal of beaver and wood, straightening of streams, and damage to riparian areas have created simplified, structurally starved, riverscapes. Degraded streams are very efficient at transporting water, sediment, and nutrients downstream. Aspen forests are also biological hotspots that have been degraded by past land uses such as overbrowsing ungulates, land clearing, fire suppression, and ...


Panel 1 Paper 1.3: Le Paysage Rural Patrimonial, Outil Et Projet Au Service De La Lutte Contre Le Réchauffement Climatique, Régis Ambroise 2019 Collectif Paysages de l'après pétrole

Panel 1 Paper 1.3: Le Paysage Rural Patrimonial, Outil Et Projet Au Service De La Lutte Contre Le Réchauffement Climatique, Régis Ambroise

Rural Heritage - Landscapes and Beyond / PATRIMOINE RURAL: Paysages et au-delà

Cette intervention fait référence au paragraphe de la résolution19GA 2017/30 du Conseil International des Monuments et des Sites indiquant que « la 19° Assemblée générale de l’ICOMOS… salue l’adoption de l’accord de Paris et encourage tous les membres de l’ICOMOS à renforcer leurs efforts pour appuyer sa mise en œuvre et identifier les réponses qui s’appuient sur le patrimoine ou les paysages culturels… ». Elle prend l’exemple de la façon dont les paysages de terrasses ont été abordés ces dernières années dans trois situations différentes : en France, dans le Guizhou en Chine et dans le ...


Capacity And Distribution Of Water Stored In The Vadose Zone Of The Chinese Loess Plateau, Yuanjun Zhu, Xiaoxu Jia, Jiangbo Qiao, Andrew Binley, Robert Horton, Wei Hu, Yunqiang Wang, Ming’an Shao 2019 Northwest A&F University

Capacity And Distribution Of Water Stored In The Vadose Zone Of The Chinese Loess Plateau, Yuanjun Zhu, Xiaoxu Jia, Jiangbo Qiao, Andrew Binley, Robert Horton, Wei Hu, Yunqiang Wang, Ming’An Shao

Agronomy Publications

Water stored in the vadose (unsaturated) zone provides the majority of water required by plants and buffers water resources; thus, it is central to understanding ecological and hydrological processes in the Chinese Loess Plateau (CLP) with its thick loess deposits. We used multisource data on soil water content (SWC) and vadose zone thickness, combined with a spatial interpolation method, to quantify the vadose zone water and further deduce the water resource composition in the CLP. Vadose zone water is approximately 3.1 × 1012 m3 (±27.5%) in the CLP, 92.4% of which is stored in the deep ...


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