Randy from Hubbard, Ne writes
Bonide Mancozeb would be a great product to consider to treat late blight.Per the manufacturers label for Bonide Mancozeb Flowable with Zinc Concentrate, do not apply within 5 days of harvest. After your last application wait 5 days before harvesting. Do not apply product more than seven times per year.
Answer last updated on: 03/23/2020