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Recent Rains May Increase Tar Spot in Indiana’s Corn Crop

August 19, 2022
tar spot on corn leaf

Many variables lead to the development of tar spot in corn, but 2 of the most consistent variables are weather and the timing in which it affects the crop.

Chad Threewits, Syngenta agronomy service representative, was interviewed by C.J. Miller at Hoosier Ag Today about the recent wet conditions in IN and its potential impact on the increase of tar spot issues throughout the state. Here is a summary of the interview from August 8, 2022:

  • Parts of IN have received more rain over the past few weeks, leading to a higher chance of tar spot forming.
  • Tar spot has become an increasingly detrimental disease to corn crops over the past few years, affecting standability and yields.
  • With recent rainfalls, it takes 14-21 days for the disease cycle to begin, so IN growers should begin scouting to spot early signs of the disease in their fields.
  • There is no hybrid or solution to completely get rid of tar spot, but a fungicide application can help.
  • Miravis® Neo fungicide has 3 active ingredients that attack tar spot and offer superior plant-health benefits.
    • Crops stay greener longer.
    • Crops demonstrate enhanced water-use efficiency during drought conditions.

Read the full interview which was originally posted on Hoosier Ag Today. We thank Hoosier Ag Today and C.J. Miller for allowing us to repost to our agronomy blog.

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