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Agronomic Crops Network

Ohio State University Extension

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C.O.R.N. Newsletter

  1. When Is It Too Late to Fertilize Corn with Nitrogen?

    Author(s): Steve Culman , Author(s): Peter Thomison

    Heavy rainfall over the past several weeks has left many producers across the state with few opportunities to side dress their corn with nitrogen. To make matters worse, excessive water means that significant soil nitrogen has likely been lost through denitrification and/or leaching. It’s not uncommon or surprising to see standing corn crops with severe yellowing, indicating some level of nitrogen deficiency. Most of the corn in the state has grown too tall for standard application equipment to pass over without crop damage, and some corn is entering late vegetative stages.

    Issue: 2015-20

  2. Ohio Fertilizer and Manure Application-New Legislative Criteria

    Author(s): Greg LaBarge, CPAg/CCA

    New regulations for manure and fertilizer application started on July 3, 2015 when Senate Bill Number 1 came into effect. The legislation affects nitrogen and phosphorus application whether applied as manure or granular fertilizers. Parts of the regulations are targeted specifically to define watersheds that encompass the Western Basin of Lake Erie while one provision is effective statewide.

    Issue: 2015-20

  3. Ohio Long-Term Phosphorus and Potassium Fertilizer Trials: Grain Yields

    Author(s): Steve Culman , Author(s): Ed Lentz, CCA

    Additional Authors:  Anthony Fulford, Clay Dygert,

    Issue: 2015-20

  4. OSU Extension to Hold NW Ohio Precision Ag Day and “Fert-Cert” August 4th

    Author(s): Eric Richer, CCA

    Farmers and crop consultants interested in seeing the latest nutrient application equipment for corn, soybeans and wheat are encouraged to attend the Tuesday, August 4th Northwest Ohio Precision Ag Technology Day at Fulton Co Fairgrounds in Wauseon.  This year’s field operation of interest is precision nutrient management. The event will qualify as a full, 3 hour “fert-cert” to comply with Ohio Senate Bill 150 regulations.  The event will also offer at least 4 hours of Certified Crop Advisor credits, including Soil/Water and Nutrient Management.

    Issue: 2015-20

  5. Concerns for N Loss in Corn from Recent Storms

    Author(s): Ed Lentz, CCA , Author(s): Steve Culman

    Some parts of Ohio have recently experienced heavy rains, especially the northern part. Producers in these areas may have concerns about nitrogen loss in corn fields. Nitrogen losses occur by two main pathways: denitrification (gaseous loss of N) and leaching of nitrate from soil through water leaving the tile line or into groundwater. There is no tool or test that can tell how much has been lost. An estimate can made on the loss potential, which is based on N source, time of application, soil temperature, and number of days that soils have remained saturated.

    Issue: 2015-17

  6. What’s the Right N Rate for Corn in Ohio?

    The first answer is we don’t know. The truth is that our soils, rainfall, temperatures, the year-to-year variation and cropping systems are different enough that any rate we tell you will be wrong.

    Issue: 2015-16
  7. Sidedressing corn with liquid manure

    Nitrogen Value of Spring Applied Manure

    Author(s): Glen Arnold, CCA

    Many Ohio livestock were unable to apply their normal amounts of manure last fall due to wet weather and a delayed harvest season. As a result, many producers need to haul manure this spring before the planting season.

    Issue: 2015-10

  8. Is It Too Early to Apply N to Wheat? - Yes

    Author(s): Ed Lentz, CCA , Author(s): Laura Lindsey

    Each year producers ask the question when is the best time to apply N to wheat? Also, is it ok to apply N on frozen ground?

    For any N application the question to ask is, “When does the crop need N?” Wheat does not require large amounts of N until stem elongation (Feekes Growth Stage 6), which is the middle or the end of April depending on the location in state. Ohio research has shown no yield benefit from applications made prior to this time period. Soil organic matter and/or N applied at planting generally provide sufficient N for early growth until stem elongation.

    Issue: 2015-04

  9. Agricultural Fertilizer Applicator Certification Training Events

    Author(s): Greg LaBarge, CPAg/CCA

    The Agricultural Fertilizer Applicator Certification Program administered by the Ohio Department of Agriculture came into law this past summer. The program is a certificate program that requires training (or meeting equivalent requirement), application for the certificate and continuing education to maintain the certificate. Those required to obtain the certificate prior to September 30, 2017, are anyone applying fertilizer to 50 or more acres of agricultural production.

    Issue: 2014-41

  10. Nutrient Management Plan Development Workshops Announced

    Author(s): Greg LaBarge, CPAg/CCA

    Nutrient management plans developed to meet Natural Resource Conservation Service (NRCS) EQUIP program criteria can be developed by Certified Crop Advisors in the State of Ohio as a service to their farm clientele. Nutrient management plans take soil fertility recommendations one step further and start to assess the environmental concerns of field sites to nutrient runoff/loss via nutrient indexes plus assessing erosion and other resources concerns on the farm.

    Issue: 2014-38

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