How to get rid of Olive Knot

Question

Some of my olive trees have the classical galls on some of the branches. In some cases the branches are totally dead (terrible i missed them).

Using disinfected pruning shears i have removed the infected branches (the rest of the trees remain strong though there are some galls on the main trunk). I have then sprayed all the cuts with Copper Sulfate.

Is there anything else i should do to prevent the disease from spreading

Answer 1

It sounds like you have done the right things. If mine I would spray the entire tree, foliar canopy and woody stems, now and a month later with a biological fungicide-bactericide. I'm not sure what is available in Italy, but in the US I use this:

http://certisusa.com/pest_management_products/biofungicides/doublenickel_LC_fungicide.htm

https://www.domyown.com/monterey-complete-disease-control-readytouse-p-17485.html

http://ipm.ucanr.edu/PMG/r583100411.html