Plant many varieties to spread out windows of vulnerability. Frost may get the early blooms but not the later ones. Hail may damage the plum crop but not the peaches with their protective fuzz. Rain may destroy your cherry crop, but help your apple crop. The market may be good one week but poor the next.
Every farm is different and within every farm are various soil types.
Soil management techniques must reflect those differences. The general goal, however, is to achieve a healthy, vital, biologically active soil with adequate organic matter to sustain microbiotic activity creating conditions which favor humus formation. Nutrient deficiencies should be corrected as applicable to the crops being grown in a manner that the farmer can afford. Manures, composts, mulches, and covercrops should be part of every farm's fertility program. But feeding should not go beyond the level of the plant's normal requirements.