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Iowa State University

Agriculture and Environment Extension Publications

Plant Sciences

Agricultural and Biosystems Engineering

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Farm Energy: Energy Considerations For Low-Temperature Grain Drying, Shawn C. Shouse, H. Mark Hanna, Dana Petersen May 2012

Farm Energy: Energy Considerations For Low-Temperature Grain Drying, Shawn C. Shouse, H. Mark Hanna, Dana Petersen

Agriculture and Environment Extension Publications

Harvested corn often requires artificial drying to lower moisture content for safe storage. Learn about energy considerations for drying corn with natural-air or low-temperature systems.


Maintaining Food Safety Through Quality, Charles R. Hurburgh Jr., Daniel D. Loy, John D. Lawrence Oct 2010

Maintaining Food Safety Through Quality, Charles R. Hurburgh Jr., Daniel D. Loy, John D. Lawrence

Agriculture and Environment Extension Publications

Food safety is a worldwide issue affecting millions of people who suffer from diseases caused by contaminated food. An estimated 76 million cases of foodborne disease occur each year in the United States. Policy makers are looking to enhanced quality management systems for tracing food back to its source.

This report will give producers, researchers and consumers a summary of efforts by Iowa State University Extension in food safety, quality management systems and traceability of grain and livestock products.


Soybean Drying And Storage, Charles R. Hurburgh Jr. Nov 2008

Soybean Drying And Storage, Charles R. Hurburgh Jr.

Agriculture and Environment Extension Publications

Why would you artifi cially dry a crop that normally dries in the fi eld? One reason would be late planting due to double cropping or wet fi elds, or poor fall weather may result in soybeans that are too wet to store. Second, harvesting early, when soybeans are still wet, reduces fi eld losses, harvest losses, and market weight losses and allows more time for other fall fi eldwork.


Calibration And Uniformity Of Solid Manure Spreaders, H. Mark Hanna, Tom L. Richard Sep 2008

Calibration And Uniformity Of Solid Manure Spreaders, H. Mark Hanna, Tom L. Richard

Agriculture and Environment Extension Publications

This publication outlines how to calibrate dry manure equipment and measure the manure distribution uniformity, and shares results of ISU Extension research comparing rear- and side-delivery spreaders.


Resource Conservation Practices: Consideration In Selecting No-Till, Mahdi Al-Kaisi, H. Mark Hanna, Michael D. Duffy Jul 2008

Resource Conservation Practices: Consideration In Selecting No-Till, Mahdi Al-Kaisi, H. Mark Hanna, Michael D. Duffy

Agriculture and Environment Extension Publications

Consider the advantages of a no-till system. This publication looks at weed control, residue management, equipment requirements, nutrient management and the results of yield and economic return studies.


Resource Conservation Practices: Consider The Strip-Tilling Alternative, Mahdi Al-Kaisi, H. Mark Hanna May 2008

Resource Conservation Practices: Consider The Strip-Tilling Alternative, Mahdi Al-Kaisi, H. Mark Hanna

Agriculture and Environment Extension Publications

Strip-tillage is an alternative to no-till in areas where poorly drained soils are dominant. Read about comparisons of strip-tillage to other tillage systems and the benefits and possible concerns.


Frost Damage To Corn And Soybeans, Charles R. Hurburgh Jr., Garren O. Benson Sep 2007

Frost Damage To Corn And Soybeans, Charles R. Hurburgh Jr., Garren O. Benson

Agriculture and Environment Extension Publications

Freezing temperatures before physiological maturity will damage corn and soybeans. In addition to creating quality problems, premature frost will reduce the yield of dry grain.


Disaster Recovery—Managing Immature Crops For Grain Or Silage, Stephen K. Barnhart, Roger W. Elmore, Palle Pedersen, H. Mark Hanna Dec 2006

Disaster Recovery—Managing Immature Crops For Grain Or Silage, Stephen K. Barnhart, Roger W. Elmore, Palle Pedersen, H. Mark Hanna

Agriculture and Environment Extension Publications

Tips on managing crops that may not mature before the first killing freeze of fall.


Moisture Basis Conversions For Grain Composition Data, Charles R. Hurburgh Jr. Sep 2006

Moisture Basis Conversions For Grain Composition Data, Charles R. Hurburgh Jr.

Agriculture and Environment Extension Publications

Weight percentages change with variations in moisture content. Dry samples have larger percentages of protein, oil, starch, and fiber than wet samples. Calculation of these percentages on a moisture basis other than the actual moisture at the time of test is strictly a mathematical formula.


Agricultural Phosphorus Management And Water Quality Protection In The Midwest, Charles Wortmann, Matthew J. Helmers, Antonio P. Mallarino, Charles Barden, Daniel Devlin, Gary Pierzynski, John Lory, Ray Massey, John Holz, Charles Shapiro, John L. Kovar Jan 2005

Agricultural Phosphorus Management And Water Quality Protection In The Midwest, Charles Wortmann, Matthew J. Helmers, Antonio P. Mallarino, Charles Barden, Daniel Devlin, Gary Pierzynski, John Lory, Ray Massey, John Holz, Charles Shapiro, John L. Kovar

Agriculture and Environment Extension Publications

For nutrient management planners -- to understand the risk of phosphorus in surface waters and to manage this risk. Targeted for Iowa, Kansas, Missouri, and Nebraska.


Calibrating Liquid Tank Manure Applicators, Kapil Arora, Mark A. Licht, Kris Kohl, Joel L. Dejong Jul 2004

Calibrating Liquid Tank Manure Applicators, Kapil Arora, Mark A. Licht, Kris Kohl, Joel L. Dejong

Agriculture and Environment Extension Publications

Why and how to calibrate liquid tank manure applicaors is discussed. A comprehensive worksheet is provided.


Air Quality Resources For Iowa Animal Agriculture, Angela M. Rieck-Hinz, Jeffery C. Lorimor, Wendy J. Powers, Hongwei Xin Mar 2003

Air Quality Resources For Iowa Animal Agriculture, Angela M. Rieck-Hinz, Jeffery C. Lorimor, Wendy J. Powers, Hongwei Xin

Agriculture and Environment Extension Publications

A detailed list of publications, web sites, and research projects on animal agriculture air quaiity.


Air Quality And Animal Agriculture, Angela M. Rieck-Hinz, Jeffery C. Lorimor, Wendy J. Powers, Hongwei Xin Mar 2003

Air Quality And Animal Agriculture, Angela M. Rieck-Hinz, Jeffery C. Lorimor, Wendy J. Powers, Hongwei Xin

Agriculture and Environment Extension Publications

Air quality and potential gaseous emission from animal feeding operations (AFOs) are a concern among Iowans. Rural residents are concerned with odors and emissions from AFOs that may affect their health, property values, and the environment. Livestock producers are concerned with possible effects on their own family members and employees, the environment, and the health and productivity of the livestock.


Iowa Grain Quality Initiative, Charles R. Hurburgh Jr. Feb 2003

Iowa Grain Quality Initiative, Charles R. Hurburgh Jr.

Agriculture and Environment Extension Publications

Worldwide emphasis on grain quality and the increasing use of value-added grains for a specific purpose hold tremendous opportunities for Iowa corn and soybean growers. The Iowa Grain Quality Initiative (IGQI) envisions a future in which Iowa is the location of choice for commercialization of specialty or value-added grains.


Resource Conservation Practices: Understanding And Managing Soil Compaction, H. Mark Hanna, Mahdi Al-Kaisi Mar 2002

Resource Conservation Practices: Understanding And Managing Soil Compaction, H. Mark Hanna, Mahdi Al-Kaisi

Agriculture and Environment Extension Publications

Excessively compacted soil can result in many problems including a reduced yield and an increase in horsepower and fuel necessary for tillage. Learn more about this problem as well as ways to reduce soil compaction.


Resource Conservation Practices: Residue Management And Cultural Practices, Mahdi Al-Kaisi, H. Mark Hanna Mar 2002

Resource Conservation Practices: Residue Management And Cultural Practices, Mahdi Al-Kaisi, H. Mark Hanna

Agriculture and Environment Extension Publications

High crop residue levels translate directly into soil conservation benefits. Includes what affects crop residue and four methods of measuring it.


Selecting The Correct Nozzle To Reduce Spray Drift, Brent A. Pringnitz, H. Mark Hanna, Jim Ellerhoff Jul 2001

Selecting The Correct Nozzle To Reduce Spray Drift, Brent A. Pringnitz, H. Mark Hanna, Jim Ellerhoff

Agriculture and Environment Extension Publications

Nozzle selection is the most important factor in reducing pesticide drift. Get details here on matching your application needs to the nozzle best suited to the situation.


Have You Checked Your Grain Bin?, Charles R. Hurburgh Jr. Mar 1997

Have You Checked Your Grain Bin?, Charles R. Hurburgh Jr.

Agriculture and Environment Extension Publications

The problem is with low test weight corn that was either slow to mature or did not fully mature before it was harvested last fall. Corn with a high moisture content may have been dried to 13-14 percent last fall, but those readings might not be reliable.


Cultivation: An Effective Weed Management Tool, H. Mark Hanna, Robert G. Hartzler Jun 1996

Cultivation: An Effective Weed Management Tool, H. Mark Hanna, Robert G. Hartzler

Agriculture and Environment Extension Publications

Common questions are answered about relying on cutivation for interrow weed control. Other weed management factors also are addressed, such as time, weather conditions, erosion control, and cost.


Using Farm Moisture Testers, Charles R. Hurburgh Jr. Oct 1995

Using Farm Moisture Testers, Charles R. Hurburgh Jr.

Agriculture and Environment Extension Publications

Accurate moisture tests are important in managing and marketing grain.


Conveyors For Bulk Handling Of Seed, Manjit K. Misra Feb 1986

Conveyors For Bulk Handling Of Seed, Manjit K. Misra

Agriculture and Environment Extension Publications

Conveyors are used to fill and unload bulk seed storage bins and to transfer seed within a seed cleaning plant This publication describes commercial conveyors available and how to select one.