If the tree is wasting nutrients by sending them out to the branch that cannot be saved, it is practically throwing away all the nutrients that it could use on the other, healthier branches. As soon as you start to see a branch that is deteriorating or becoming unhealthy, chop it off right away. At the very least, trim down the unhealthy part but leave all the segments that still look like they could continue growing. Once you have a plastic animal along with reflective items and noisy items, almost all birds will be too terrified to even go close. While airborne creatures might take a little more than their share of fruit, you should still consider leaving one tree exclusively for them. While they might seem like a pest sometimes, birds can be the one thing that livens up your garden. Therefore you must always be sure you know which size fruit tree you have (dwarf, semi dwarf, or standard) and how big it will end up being once it is an adult. Dwarf trees need an area with an eight-foot diameter to grow. Semi-dwarf fruit trees can grow up to fifteen feet wide. Standard fruit trees can grow as wide as thirty feet. I myself live in the same area as that friend I just mentioned, and I have never had a problem with moths. This is because every Saturday during springtime, I make it part of my schedule to go outside and spray down my entire tree. Preventing the infestation of unwanted guests is much better than having to cut down a tree and start completely over just because of a little laziness. Gum protrudes through the bark, along with a large callus. The pathogen which causes these cankers usually enters the tree through older wounds. If you prune all of the sprouts that occur in late summer, cankers will have a harder time making themselves known within your tree. When you prune, always allow the wounds to heal naturally rather than use the wound dressings that you can buy at gardening stores. If you buy your tree from a nursery, be especially careful when you are taking it from the nursery to your house to aviod it snapping. When you have gotten your tree safely back to your yard, look at the bottom of it and see how big the clump of roots is. It may seem like a lot of work now, but you want to dig a hole that is twice as wide as the clump, and just a little less deep.