Hello Dave and all,
Here in Europe potassium bicarbonate is now used as an
organically-approved mildew fungicide. It also appears to have some scab
activity. I do not use it as my apples tend towards lower calcium, and I
do not want to make that worse by adding Potassium, but I wonder if you
use i
Hello Arthur,
In an ideal world, you are quite correct that resistant varieties
provide more promise, and I am all in favour of using them, either to
grow, or in breeding programs. However, in our biological world, the
disease-resistant tree is always at a disadvantage compared to the
disease orga
