Farmers need to have many skills to manage both the soil and the homestead. Out of those skills, seed saving is probably one of the most important. By giving more attention to seed saving, farmers can improve the quality of their seed each year. This can then improve crop production. This can be done without having to increase inputs of fertilizer, irrigation or cultivation. So with a little extra care in seed production, farmers can easily increase their farm production.
Chris Evans - Farmers' Handbook