10-14 day spray interval. Topsin 85WDG at 4 oz. per acre. 10-14 day spray interval. Repeat applications at 2 week intervals through early September. Phytophthora blight Avoid fields with a history of the disease on cucurbits, peppers, or tomatoes.
Turban squash is extremely susceptible.
Apply protectant fungicides at 7-14 day intervals through September. Apply to soil when plants are well established and have 4 to 5 true leaves. Prefar 4E 5 qt. Apply before seeding or transplanting and incorporate into soil to give thorough mixing to a depth of 2 to 3 in. May be applied to the soil surface immediately after seeding in freshly worked soil if sprinkler-irrigated within 24 hours.