Corn following corn increases the risk of foliar diseases, especially under no-till conditions. Inoculum surviving on corn residue from the previous crop spreads to the subsequent corn crop, resulting in higher spore loads. If corn follows corn in no-till conditions and the hybrids are susceptible to foliar dieases, then a foliar fungicide is warranted.
FAQ #25965
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Does corn following corn need foliar fungicide more than rotated corn?
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