About half my peanut crop got a half inch of rain Saturday night. The other half did not and we don’t have much of a chance for any in the next week. I’ve stretched the Miravis/Elatus on my earliest peanuts about four weeks. My youngest peanuts will just be reaching three weeks on that spray tomorrrow. Just so happens the youngest peanuts are where we got rainfall. Which is more important?
1-Spray the oldest peanuts that have spots throughout the field that are literally dying from drought and also did not receive rainfall just because it’s been four weeks?
2-Spray the youngest peanuts that now have enough moisture to facilitate some disease that have been three weeks?
3-Spray them all.
I know it’s bad practice to keep stretching that spray but some of these peanuts look awful due to drought.
Note-I do have some late leaf spot coming in the older peanuts. I’m being advised that curative action isn’t what it used to be on some chemistries.
Note-Some of my fields have living Sclerotinia in bottoms (not spreading) as well as active spider mites uphill or in sandy areas in the same field.
Jordan:
I would spray Provost Silver on all of your peanuts. If you can find micronized sulfur you might want to add that with it. There is a dry product called Microthiol Disperse but liquids are out there. The Provost Silver has some curative action in case leaf spot slipped through the Miravis plus Elatus. Chlorothalonil is also a good option but it has no curative action if some leaf spot has slipped through. Work at VT has shown some activity of Provost Silver on Sclerotinia blight.
I would go with Provost Silver alone or with micronized sulfur.