CBOT corn futures down 1 percent. The most active corn futures were down 1 percent for the week after closing 1 percent in the previous week.U.S. farmers are likely to plant corn on 90.3 million acres in 2019, up 1.3 percent from 2018, and cut soybean plantings to 84.6 million acres, down about 5 percent year-on-year.