The most important thing is to get material out of the orchard that is likely to harbor disease causing organisms. A big source of that will be prunings, so don’t cut so much that you have no time to dispose of the mess. These can be burned, but of course that takes drying time so move it in the meantime. It can be buried if your land allows for it, or for those with the right equipment chipping is an option. Small material has a better chance of composting before reinfection can occur, though it is not foolproof.
Leaves can also be harbor for disease, but of course this can be trickier to remedy. I coach to mow it, string trim, or what have you in order to reduce overall leaf size. If you are doing this in tandem with sod mowing all the better to build that composting nest. Nitrogen additions and liming can help speed things along as well. You could vacuum or rake if you are a small homestead, but good luck going this route if you are managing a good size orchard. Don’t get discouraged though as every bit of cleanup helps reduce disease pressure (and pests too but that’s another saga).