07-07-2020, 08:19 PM
Post pictures to help us guide you better. Meanwhile, apply a systemic fungicide. Mancozeb is a contact fungicide and it protects plants before the fungi enters the plant. Once they are in, manco will not stop them. Normally, it is good to apply both a systemic and contact fungicide before diseases appear. Some systemic fungicides include metalaxyl (Bluebolt, CocoaForce) and Hexaconazole (Control Total).
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See http://farmersjoint.com/thread-28681.html and http://farmersjoint.com/thread-28687.html
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See http://farmersjoint.com/thread-28681.html and http://farmersjoint.com/thread-28687.html
Food for the Nation.