Southern Rust Confirmed in Southeast Kansas – Monitor Corn Fields in Nebraska

Southern Rust Confirmed in Southeast Kansas – Monitor Corn Fields in Nebraska Figure 1. Southern rust spores are typically orange to tan in color and produced in pustules...

Western Bean Cutworm Degree Day Modeling

Using Degree-Days to Predict Western Bean Cutworm Flight Times July 2, 2015 One of the challenges with controlling insect pests in field crops is knowing when the damaging stage of...

Late Planting Provisions for Crop Insurance

Late Planting Provisions for Crop Insurance May 20, 2015 The frequent and sizable rains seen recently across eastern Nebraska have kept some Nebraska growers from completing their...

Delay Planting in Wet Soils

Wait for Better Conditions Before Heading Out on Wet Soils May 11, 2015 Figure 1. Don't till wet soils to dry them out. Tilling or driving on wet soils can cause compaction. ...

Growing Degree Units and Corn Emergence

Growing Degree Units and Corn Emergence May 12, 2015 Many factors can affect how long it takes for corn to progress from germination to emergence, including moisture and air and...

Advisory: Chilling Injury in Corn, Soybeans

Chilling Injury in Corn and Soybeans April 22, 2015 If you're considering going to the field this week to start planting, be sure to check predicted temperatures for the critical 48...

Nebraska Crop and Soil Moisture Update (4-20-15)

Nebraska Crop and Soil Moisture Update For the week ending April 19,  clear conditions during the first part of the week allowed fieldwork to advance, but gave way to rain which...

Study Initiated on Using Cover Crops in Corn and Soybean Systems

Study Initiated on Cover Crops in Corn and Soybean Systems Cover crops have been described as the "newest old concept" in farming. While this addition is not an entirely new idea, the number...

Update on Planting Conditions 2015

Update on Planting Conditions April 7, 2015 Conditions in many areas may be right to start planting corn, but that doesn't tell the whole story.  One-day soil temperatures on...

Articles of Interest

Dr. Ken Cassman, University of Nebraska-Lincoln

Irrigated Corn Achieves High Yields with High Energy Efficiency, Little Impact on Environment - Jan. 2012 CropWatch Article 

Also check out:  Hybrid Maize Model-a computer program that simulates the growth of a corn crop (Zea mays L.) under non-limiting or water-limited (rainfed or irrigated) conditions based on daily weather data.

Corn Growth and Development-Iowa State UniversityCheck out the completely redone Corn Growth and Development publication from Iowa State University Extension!  Updated information for today's hybrids and excellent graphics. 


Corn Pollinating-Picture by Tom Dorn-UNL Extension Educator.How Extended High Heat Disrupts Corn Pollination - Aug. 2011 CropWatch Article.  Dr. Tom Hoegemeyer explains the conditions that affect pollen shed and viability in corn during high heat and high relative humidity. 


 slide rule imageClick here for more information on how to obtain your free N calculation slide rule from CropWatch.


Corn Nitrogen Recommendations Calculator - Excel sheet to determine recommended UNL nitrogen rates from soil tests.

Additional Articles

*PDF document requires Acrobat Reader. Download free from Adobe Web site

Jenny ReesQuestions/Comments about the CropWatch Corn site? Please contact Jenny Rees, UNL Extension Educator in Clay County.


Upcoming Events

Please check the Crop Watch Calendar for Upcoming Events!


Corn Facts

Corn is an economically important crop to Nebraska resulting in $9.1 billion from 9.1 million acres harvested in 2012 according to USDA National Agricultural Statistics Service.

  1. Nebraska ranks 3rd in U.S. corn production.
  2. Nebraska ranks 1st in U.S. popcorn production.
  3. Nebraska ranks 1st in U.S. white corn production.
  4. Nebraska ranks 2nd in ethanol production capacity.

Contact Us

Charles Shapiro
UNL Extension Specialist

Jenny Rees
UNL Extension Educator

Keith Glewen
UNL Extension Educator