foliar spraying

[tessa]

i just treated my tomato and zucchini plants today with a sulfur spray to control mites and powdery mildew.
does anyone know how long i should wait before i can foliar feed them next?
i can't seem to search up that answer here.
if anyone has tips on foliar spraying regimes...i would love to hear them.
thanks!

[amideutch]

Tessa, I believe the mode of action more than anything else will dictate the interval between applying foliar ferts and sprays for disease or insects whether they be organic or inorganic. Weather also is a player, especially rain which can wash off what you applied.
For insects it depends whether the product kills on contact or the pest has to eat it. If it is something that kills by ingestion then it needs to remain on the plant longer than a, kills by contact, product.
Since I don't have to deal with insects and use organic products, twice a week applications works out to once a week for the ferts and the same for fungicides. Of course if it does rain I increase the frequency of applications.
And for you Daconil users, which acts as a protectant, if you do make foliar applications of other products you will need to reapply it as it will loose it's effectiveness and it is not recommended to mix Daconil with other products when applying including ferts.
Ami