Information Resources for Challenging Crop Harvest Conditions

The impetus for this collection of articles came from the challenging 2009 harvest season in Indiana and throughout the Midwest. Delayed planting of crops, slow crop development due to cool summer temperatures, significant incidence of late season foliar diseases and ear rots in corn, slow grain dry down due to cool fall temperatures, and frequent periods of rain resulted in a frustrating end to the growing season. A summary of harvest, drying, storage, and end-use issues relevant to the challenging 2009 harvest season in Indiana was prepared by Purdue Extension specialists (http://www.kingcorn.org/news/articles.09/HarvestConcerns2009.pdf).

The articles linked below represent a collection of information about various aspects of managing the harvest and handling of a late crop that is further impacted by disease, high moisture grain, and freeze damage to immature grain. More articles and publications will be added as they come to my attention.

Because this page may be updated frequently during challenging harvest seasons, please "refresh" or "reload" your Web browser to force an update to the most current version.

When in doubt about the applicability of the information to your geographic area of the country, please contact the author(s) of the articles or consult with your own Univ Extension specialists.

URL verifiedThese links were last verified September 2012. The dates in parentheses following the publication titles refer to the year of publication. Please send comments or dead link alerts to R.L. (Bob) Nielsen (rnielsen at purdue.edu).

Maturity and Field Dry Down of Corn Grain

Calculating Grain Weight Shrinkage in Corn Due to Mechanical Drying (1991)
Univ of Minnesota
Corn Crop Continues Snail's Pace of Grain Drying & Harvest (2009)
Purdue Univ.
Corn Kernels Sprouting on the Ear (2009)
Univ. of Kentucky
Effects of Stress During Grain Filling in Corn (2011)
Purdue Univ.
Field Drydown of Mature Corn Grain (2011)
Purdue Univ.
Field Drying and Scheduling Corn Harvest (2009)
Ohio State Univ.
Grain Fill Stages in Corn (2008)
Purdue Univ.
How Will Delaying Corn Harvest Affect Yield, Grain Quality and Moisture? (2009)
Ohio State Univ.
Late Harvest Issues (2009)
Univ of Illinois
Some Pros and Cons of Letting Corn Stand in the Field Through Winter (2004)
Univ. of Wisconsin
Soybean Quality Issues (2009)
Iowa State Univ.
Stress During Grain Fill: A Harbinger of Stalk Health Problems (2011)
Purdue Univ.
Test Weight Issues in Corn (2012)
Purdue Univ.
Weigh Risk of Leaving Corn Stand Through Winter (2009)
Univ of Wisconsin
Wet Weather Can Cause Seeds to Sprout before Harvest (2009)
Univ. of Missouri

Frost-Damaged Crops

Feeding Frosted Forages (2009)
Ohio State Univ.
Frost Damage and Corn Silage Options (2009)
Univ. of Kentucky
Frost Damaged or Immature Corn: Forage Options (2004)
South Dakota State Univ.
Handling Frost Damaged Corn (2009)
Ohio State Univ.
Harvesting and Handling High Moisture, Frost Damaged Grain (2000)
Michigan State Univ.
Harvesting Immature Corn and Soybeans for Forage After a Killing Frost (2004)
Univ. of Minnesota
Managing Immature and Frosted Corn Silage (2006)
Univ. of Vermont

Grain Diseases & Mycotoxins

Aflatoxins and Drought (2012)
Texas A&M Univ (a Web site devoted to the topic)
Aflatoxin in Baled Corn (2010)
Texas A&M Univ
Aflatoxins in Corn (2010)
Univ of Missouri
Aflatoxin in corn: A potential concern in dry years (2012)
Kansas State Univ
Application of Fungicides to Corn/Soybeans Under Drought Conditions is a Bad Idea (2012)
Univ of Kentucky
Aspergillus Ear Rot (2011)
Purdue Univ
Aspergillus Ear Rot and Aflatoxin Production (2012)
Iowa State Univ
Check Cornfields for Aspergillus Ear Rot (2012)
Univ of Illinois
Choose Wisely……Avoid unprofitable strategies to manage moldy grain (2010)
Purdue Univ.
Concerns about Mycotoxins in the 2009 Corn Crop (2009)
Univ. of Nebraska
Corn Ear Rot: Which One is It? (2009)
Ohio State Univ.
Corn Ear Rot and Potential Mycotoxin (2009)
Ohio State Univ.
Corn Ear Molds and Stalk Rots (2009)
Pennsylvania State Univ.
Corn Quality Issues – Field Molds (2009)
Iowa State Univ.
Dealing with Diplodia Ear Rot (2009)
Purdue Univ.
Dealing with Moldy Corn and Mycotoxin Risks (2009)
Univ of Illinois
Diplodia Ear Rot (2009)
Purdue Univ.
Diplodia Ear Rot of Corn (2001)
Ohio State Univ.
Don't rely on chemicals to reduce vomitoxin contamination of corn (2010)
Ohio State Univ.
Drought May Result in Aflatoxin Contaminated Corn (2012)
Univ of Missouri
Ear Mold Issues in Corn (2011)
Pennsylvania State Univ.
Ear Rots and Grain Molds Are Common This Year (2009)
Univ. of Nebraska
Ear Rot of Corn Caused by Stenocarpella maydis (=Diplodia maydis) (1997)
Univ. of Kentucky
Fungal Growth on Corn ("Moldy Corn") in Minnesota in Fall 2009
Univ. of Minnesota
Fusarium Ear Rot and Fumonisons (2012)
Univ of Kentucky
Get Grain Tested for Mycotoxin before Making a Decision (2009)
Ohio State Univ.
Gibberella Ear Rot of Corn (2009)
Purdue Univ.
How Delayed Harvest Might Affect Ear Rots and Mycotoxin Contamination (2009)
Iowa State Univ.
Moldy Grains, Mycotoxins and Feeding Problems (2009)
Penn State Univ, Ohio State Univ, Iowa State Univ, Univ of Kentucky, and Purdue Univ.
Mycotoxins
Iowa State Univ. College of Vet. Med.
Mycotoxin Contamination in Corn (2010)
Iowa State Univ.
Preparing for Aspergillus Ear Rot in Corn Grain and Silage (2012)
Purdue Univ
Q & A on Moldy Grain and Mycotoxins, Part 1: 2009 Crop (2009)
Ohio State Univ.
Q & A on Moldy Grain and Mycotoxins, Part 2: Handling Corn in Storage (2010)
Ohio State Univ.
Q & A on Moldy Grain and Mycotoxins, Part 3: 2010 Hybrid Selection and Management (2010)
Ohio State Univ.
Sampling and Analyzing Feed for Fungal (Mold) Toxins (Mycotoxins) (2012)
Univ of Nebraska
Sampling for Aflatoxin (2006)
Texas A&M Univ
Scouting Corn for Aspergillus Ear Rot (2012)
Univ of Kentucky
Scout Fields for Aspergillus Ear Rot to Avoid Losses Due to Aflatoxin Contamination (2012)
Univ of Nebraska
Vomitoxin on the minds of growers during corn hybrid selection (2010)
Ohio State Univ.
Watch for Gibberella Ear Rot in Corn (2009)
Univ. of Kentucky

Mycotoxin Testing Facilities

Animal Disease Diagnostic Laboratory (2012)
Purdue Univ.
Labs Certified by GIPSA for Alflatoxin Testing (2012)
Univ of Nebraska
Laboratories for Mycotoxin Analyses (2009)
Univ. of Kentucky

Feeding Issues w/ Moldy Grain

Diplodia Damaged Corn Grain: Assessing Feed Value (2004)
Ohio State Univ
Moldy Grains, Mycotoxins and Feeding Problems (2009)
Penn State Univ, Ohio State Univ, Iowa State Univ, Univ of Kentucky, and Purdue Univ.
Sampling and Analyzing Feed Fungal (Mold) Toxins (Mycotoxins) (2003)
Univ. of Nebraska
Understanding Fungal (Mold) Toxins (Mycotoxins) (2003)
Univ. of Nebraska
Use of Feed Contaminated with Fungal (Mold) Toxins (Mycotoxins) (2003)
Univ. of Nebraska

Harvesting Issues

Combine Considerations for a Wet Corn Harvest (2009)
Univ of Wisconsin
Corn Harvesting Equipment for Wind Damaged Corn (2009)
Pennsylvania State Univ.
Harvesting Corn after Rain, Snow and Wind (2010)
Univ of Nebraska
Harvesting Lodged Corn (2006)
Iowa State Univ.
Standing Corn Still in the Field? Try Grazing to Capture Its Value (2010)
Univ of Nebraska
Tips for Harvesting Corn in the Snow (2010)
Univ of Nebraska
Yield Losses and Harvesting Challenges for Severely Lodged Corn (2008)
Purdue Univ.

Grain Drying and Storage

A Tough Harvest - Frequently Asked Questions (2009)
Iowa State Univ.
Answers to Your Grain Drying Questions (2009)
Univ. of Nebraska
Corn Quality Issues – Storage Management (2009)
Iowa State Univ.
Drying, Handling, & Storing Wet, Immature, & Frost-Damaged Corn (2004)
Univ of Minnesota
Drying Soybeans (2009)
Purdue Univ.
Drying Soybeans In A Grain Bin ? How Long Will It Take? (2009)
Univ of Nebraska
Estimating Drying Times for Binned Corn and Natural Air (2009)
Univ of Nebraska
Estimating Drying Times with Heated Air for Binned Corn (2009)
Univ of Nebraska
Guidelines on Buying High Moisture Shelled Corn (2000)
Michigan State Univ.
Harvesting, Handling, and Drying Corn with Ear Rots (2009)
Purdue Univ.
Hazards of Fines and Dust in Grain Bins (2009)
Ontario Ministry of Ag.
In-Bin Drying of Corn (2009)
Purdue Univ.
Low-Temperature Drying of Corn (1992)
Purdue Univ.
Managing Stored Grain This Winter (2009)
Univ. of Nebraska
March Grain Storage: Since You Can't Keep it Cold, Get it Dry (2010)
Univ of Nebraska
Monitor Stored (and Standing) Corn for Grain Mold Diseases (2010)
Univ of Nebraska
Natural-Air Corn Drying in the Upper Midwest (2009)
Univ of Minnesota
Optimizing Grain Dryer Operations (1992)
Purdue Univ.
Post-Harvest Tips for Later Maturing Corn (2009)
North Dakota State Univ.
Soybean Drying, Handling, and Storage (2009)
Univ of Minnesota and North Dakota State Univ.

Crop Insurance Issues

Aflatoxin: Crop Insurance (2012)
Iowa State Univ.
Aflatoxin in Corn and Crop Insurance (2012)
Univ of Missouri
Aflatoxin Testing: IL, IN, MI, & OH (2012)
USDA - Risk Management Agency
Crop insurance: Follow the rules to ensure the best outcome (2012)
Michigan State Univ
Crop insurance and drought-damaged crops (2012)
Univ of Missouri
Crop Insurance During a Drought: IL, IN, MI, & OH (2012)
USDA - Risk Management
Crop Insurance Implications of Aflatoxin in Corn (2012)
Univ of Illinois
Crops salvaged from insured fields will reduce crop insurance payments (2012)
Michigan State Univ
Insurance Coverage for Drought-Damaged Crops (2012)
Iowa State Univ
Investigating Your Crop Insurance Policy in Front of a Drought (2012)
Univ of Kentucky
Late Harvest and Crop Insurance Coverage (2009)
Iowa State Univ.
Loss Adjustment Procedures for Aflatoxin (2012)
USDA - Risk Management Agency
The 2012 Drought and Income Tax Deferral of Crop Insurance and/ or Disaster Payments (2012)
Iowa State Univ
USDA Risk Management Agency: 2012 Drought Questions and Answers
USDA - Risk Management Agency

Soil Management & Tillage

Soil Management of Harvest Ruts (2009)
Iowa State Univ.
Fall tillage management in wet soil conditions (2009)
Univ of Minnesota
Soil Compaction Management at Harvest (2007)
Univ. of Minnesota
Removing Ruts from Fields (2007)
Univ. of Kentucky

Other Crop Harvest & Grain Quality Web Sites

Grain Production & Management
Univ. of Wisconsin
Grain Storage - Calculators & Tools
Univ of Kentucky
Iowa Grain Quality Initiative
Iowa State Univ.
Late Harvest Resources
Univ of Minnesota
Post Harvest Grain Quality & Stored Product Protection Program
Purdue Univ.