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Iowa | We have been waiting for the tassels to fully emerge before we apply any Headline. We finally have achieved that on several fields, but now the forecast for the next 7 days is very hot and humid. Actual temps are forecast to be 97 to 99 everyday with heat index in the 110 to 116 range. Is it best to delay our fungicide application for another week in favor of some hopefully cooler temps? Do I need to worry about adjuvant interaction more than I do about the fungicide itself?
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Headline during hot & humid weather
