US corn futures fell 2.8 percent on Friday as forecasts for some rain in the US Midwest were expected to provide much-needed relief to a parched crop next week, traders said. Some end of week profit taking weighed on the market. Losses accelerated when the benchmark Chicago Board of Trade December contract dropped below its 10-day moving average and prices closed near session lows. The lower close snapped a streak of three straight positive days for corn. Technical support was noted at the 50-day moving average. Corn futures rose 1.1 percent this week.