Soybean futures traded lower as Brazil nears completion of planting, adding pressure to the market and filling a gap from late October. The January contract fell 9.75 cents to 1,067, though money managers are increasing bullish positions. Corn futures followed the slide, dropping 4 cents to 436.75, even as managed money holds its largest bullish position since April. Wheat futures reached a new seven-week low, with the March contract falling 9.75 cents to 519.5 amid rising global output.