It also spreads out risk and workload. One can handle more acres with the same fixed costs. Diversity can also create the proper conditions for the subsequent crop. For example, a dark colored residue produces a warmer seedbed in the spring. The next important component of Dwayne's philosophy is altering the intensity of the rotation.
Proper intensity reduces risk.
The other side of the coin is that rotations with excessive intensity will be too dry. That means poor plant growth in average years. Proper intensity depends on weather, soil type, and land location. If weather tends to be variable, utilize two or more rotations. Soils that have high water holding capacity require more intensity and more high-water use crops.