Fort Dodge, IA | ManiaPlus - 8/14/2025 21:57
Spray when disease appears likely and not at some theoretical stage of growth (such as pollination) that has nothing to do with weather conditions that favor a disease outbreak. If the fungicide will not pay for itself don't spray. If you want good corn and not chaff for your own cattle factor that in.
Big judgment call with lots of contradictory advice unfortunately.
I agree with you, Purdue, in their corn growth and development stages says thinking corn is made when it reaches R5 is a mistake many farmers and some agronomists make! There is still around 50% dry weight to accumulate and stress can hurt yield |
Can I still spray fungicide at R4/5 corn?
