The effect of crop rotation among corn, soybean and rice as summer crops, and of crotalaria as a winter crop, was evaluated by the crop yield at the end of the third year.The experiment was established at Pindorama, SP, Brazil, on an acid soil(Red -Yellow Podzolic, sandy phase). After three years , there was no yield difference among treatments for soybeam production. Crop rotation was beneficial for rice and corn prodution when compared to monocultures. The good productivity in the third year could also be atributed to regular rainfall and acidity tolerant cultivars.
Rotations; soybeans; rice; corn; crotalaria juncea