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NW Indiana | Are you running the full 13.8 oz rate? One application? My non scientific experience the tar spot comes on long before we see it. The timing of rainfall will have a lot to do with it. 2021 we had big rains the last week of June and tar spot was ridiculous before anyone new it. Anyone that sprayed earlier paid huge dividends. 2022 was really dry and didn't get much until later in the season. I'm actually leaning towards if the second half of June is wet spraying around July 1st if tassel is within 10 days or so and then probably again 3 weeks later. | |
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Fungicide questions
