Harvested acreage was down slightly in South Dakota, but corn yields were decent. The statewide average corn yield was 160 bushels per acre, up 15 bushels from the previous year. Soybeans averaged 46 bushels per acre, up three bushels. South Dakota’s alfalfa hay production was up nearly 40 percent from 2017. Alfalfa haylage and greenchop production hit a new record high.