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Agronomic Crops Network

Ohio State University Extension

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C.O.R.N. Newsletter: 2026-17

Crop Observation and Recommendation Network

C.O.R.N. Newsletter is a summary of crop observations, related information, and appropriate recommendations for Ohio crop producers and industry. C.O.R.N. Newsletter is produced by the Ohio State University Extension Agronomy Team, state specialists at The Ohio State University and the Ohio Agricultural Research and Development Center (OARDC). C.O.R.N. Newsletter questions are directed to Extension and OARDC state specialists and associates at Ohio State.

  1. Battle for the Belt: Season 4, Episode 6 – Corn Staging

    Author(s): Diego Miranda, Maria Kessler, Laura Lindsey, Osler Ortez

    Season 4, Episode 6 of Battle for the Belt is now available: 

  2. Weed management in delayed planting and replant situations

    Author(s): Alyssa Essman

    The 2026 growing season has brought nearly every weather pattern imaginable across the state, from heavy rain preventing planting, soil crusting over planted ground, and droughty regions in need of precipitation. Late frosts and pounding rain led to stand and crop loss concerns. This variability has led to a range of scenarios, many of which include delayed planting and replant situations.

    Delayed planting

  3. Statewide Slug Monitoring Project – Update #7

    Author(s): Rosalind Holt-Frank, Amy Raudenbush, Leslie Aftanas, Savannah Ballweg, John Barker, Justin Baum, Nic Baumer, Amanda Barnum, Amanda Douridas, CCA, Ken Ford, Thea Haney, Janessa Hill, Hannah Houser, Dean Kreager, Erika Lyon, CCA, Amanda Perkins, Kendra Rose, Jocelyn Ruble, Clint Schroeder, Ryan Slaughter, T.J. Wells, Jacob Winters, Ted Wiseman, Kelley Tilmon

    We have concluded our seventh week of slug monitoring reports. This week covers the monitoring period from June 1st to 7th.

  4. Lep Monitoring Network Update #8 – Corn earworm and Western Bean Cutworm

    Author(s): Rosalind Holt-Frank, Amy Raudenbush, Nic Baumer, Trevor Corboy, Mary Jo Hassen, Hannah Houser, Gigi Neal, Jordan Penrose, Amanda Perkins, Beth Scheckelhoff, Kyle Verhoff, Jacob Winters, Andy Michel, Kelley Tilmon

    This is our 8th week of reporting Lep (moth) pest trap numbers, and we now begin reporting on Western bean cutworm (WBC) and corn earworm (CEW). Similar to BCW and AMW, these two pests will be monitored using green bucket traps and a lure that attracts adults. We plan to report on WBC and CEW findings through July. Please read below for more specific county information. 

  5. Bring on the Summer Weather

    Author(s): Aaron Wilson

    Climate Summary

  6. Manure, PSNT and N recommendations for 2026

    Author(s): Greg LaBarge, CPAg/CCA, Glen Arnold, CCA

    For several years, the use of the PSNT – Pre-Sidedress Nitrogen Test – has been recommended in manured or terminated legume situations. Ohio has conducted field tests with PSNT, and where soil test results exceed 25 ppm NO3-N, additional N is unlikely to increase yield.

  7. Free Farm Pesticide Disposal Collection Events Available in Athens, Crawford, and Miami Counties in August

    Author(s): Kate Hornyak

    FREE FARM PESTICIDE DISPOSAL COLLECTION EVENTS AVAILABLE IN ATHENS, CRAWFORD, AND MIAMI COUNTIES

    REYNOLDSBURG, Ohio (June 2026) – The Ohio Department of Agriculture (ODA) will be sponsoring three collection events for farmers to dispose of unwanted pesticides. This year, the collections are available in Athens, Crawford, and Miami counties on the following days and locations:

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