Despite technology available to manage Asian soybean rust (ASR), the uncertainty that the disease will arrive in Iowa this year has some farmers thinking about reducing their soybean acreage. However, the alternating corn and soybean rotation typically results in higher net return and lower variability than continuous corn or soybeans. The possible financial effects on the whole farm are the net return of the break crop itself, the effect on the variable costs of the continuously grown crop, and the beneficial effect on the yields of the following crop after the break crop. These financial effects combined result in the likely difference in net return of the different rotations.
Pedersen, Palle, "Impact of cultural practices on Asian soybean rust (Phakopsora pachyrhizi)" (2005). Integrated Crop Management News. 2358.
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