This document discusses plant propagation techniques for orchard crops. It defines plant propagation as the art and science of multiplying plants through sexual or asexual means. The two main types of propagation are sexual propagation using seeds, and asexual propagation methods like cuttings, budding, grafting, layering, and separation/division of specialized structures. Several specific asexual propagation techniques are described in detail such as stem cuttings, budding methods, grafting styles, and types of layering.