While the harvest is getting underway in the United States, all a­­ttention in South America is on the planting season. This is especially the case in Brazil, where farmers want to get the crop in as soon as possible to receive the record-high prices they were able to secure last spring and summer. 

Those record prices that farmers were able to sell soybeans at were a result of the U.S. dollar trading to a record high against the Brazilian real. This...