Many fruit trees have growths on the trunks and branches that bulge outwards - this is fruit tree canker. You can prevent fruit tree cancer and protect your trees.
Causes of fruit tree cancer
Perhaps you have noticed such growths before, perhaps you also have such a tree in your garden. The fruit tree canker pathogens can very easily penetrate the wood through cuts, branch tears or leaf stem scars. The wood is damaged, the branches die off. At the same time, the tree tries to protect itself from the pathogens by forming bulges and trying to seal the damaged areas. In most cases this doesn't work.
Treat fruit tree canker
Once you spot such growths, you should remove the diseased tissue by cutting the branch back into the he althy wood. After cutting off the branch, you need to treat the wound with a tree wax wound sealant. You should definitely remove the clippings from the garden so that the fruit canker can spread across the ground.
Preventing fruit tree cancer
A regular check on the trees for injuries can help. Basically, you should fertilize all trees in your garden sufficiently. Use long-term fertilizers or organic fertilizers for this. Thin out your trees regularly, too.