For whatever reason over the past 5 years or so, a farm manager has allowed the rotation to be very limited with most only at 2 years and even peanuts behind peanuts. In addition, the manager has been severely negligent in applying the disease spray program and instead relying on rescue treatments. The result has been severe defoliation and severe pod rot damage. Yield and quality have been severely affected.
The farm is under new management this year. The current manager is committed to turning things around. Peanut acreage has been reduced to improve rotations but many fields are still on the 2 year rotation. I am trying to help them with an effective disease management program that can address their problems with leaf spot, pod rot and sclerotinia. Any thoughts that you and the peanut team can provide are much appreciated.
Jordan:
Here is a good program that protects from the diseases you mention.
- Chlorothalonil 2 weeks
- Provost Silver 2 weeks
- Miravis plus Elatus 3 weeks
- Provost Silver 2 weeks
- Chlorothalonil 2 weeks
M plus E are good on all three diseases. In fields with Sclerotinia blight, some people spray it sequentially. It gives 3 weeks of control for each application. It is expensive but just as good as Omega 500 on Sclerotinia blight and the combination is good on leaf spot and stem rot as well. There are other options, but this approach works well. Chlorothalonil and M plus E are protective only with no curative activity. Provost Silver helps because of the curative activity.
About 60% of growers are applying (prohexadione calcium) at least once. Apogee is not available but a product called Kudos is. It is less expensive now. Call if you have questions.