Late Blight ??

[bcday]

You only need enough dry time for the Daconil to dry on the leaves before the next rain. The Ortho and Bonide formulations have enough sticking power that they won't wash off with a couple of brief showers and will protect the plant during that time. You don't need to re-apply after every rain. In fact I prefer to apply right before a rain, because if there are spores floating around in the area they can land on the leaf and start an infection during that wet weather, while you are waiting for it to stop raining. Daconil only provides a protective barrier against spore germination. It won't stop an infection that has already started. I don't wait until it warms up and dries off after a rain to spray for LB protection. Dry warm weather discourages spore germination all on its own.

If you get a lot of heavy rain and the spray does eventually wash off, just reapply a day or so sooner than you normally would, as long as it stops raining long enough for the spray to dry on the leaves.

[barkeater]

Originally Posted by Save$

Thank you, never knew that site was available. Never used Daconil. I have it now. It has been raining nearly every day. What do you do if you can"t go 24 hrs without rain? I am thinking of building A frams and put plastic on the upper half the rain runs off, but air can freely circulate around the plants. Think this would work?

That wouldn't help as the spores float through the air. As long as you spray when the leaves are dry and the fungicide is able to dry before the next downpour, it is formulated to stick to the leaves. Be sure to use a sprayer that can deliver a pressurized spray through a clean nozzle to reduce droplet size and get complete coverge including the stems, and concentrate on hitting the undersides of the leaves. I always add a little insecticidal soap to the spray mix to help the daconil adhere better too.