Determining what to grow as rotational crops and how they will be sequenced can be a complex process. There are however some general guidelines that can be extremely helpful in beginning the process.
No one can design a rotation that will work every year under every circumstance. It is a probability game. There are bad rotations that work well for a while. There are good rotations that fail at times due to weather or other uncontrollable factors. Poor gamblers make money at times; good gamblers lose money at times.
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Rotations can be designed that work well in dry years, but they fail to take advantage of good years. Or even worse, they fail badly in good to wetter than normal years.
Producers with more risk tolerance (financially and psychologically) will be more comfortable with riskier rotations. Properly designed "risky" rotations can make more money in the long run but can result in substantial losses over the short-term.
The best approach to spreading risks is to use more than one rotation (preferably sequentially to make an even longer complex rotation)
Most farmers are good at designing rotations once they start trying.
The rotations used may have to change as market, soil, climate, and enterprise, conditions change. That is to be expected. When designing a rotation, be thinking of ways you could change it. Download our free report: Crop Rotation Best Practices: Design a More Effective Rotation