December corn was down 2 1/2 cents late in the overnight session. Outside market forces look neutral to a bit negative with a turn up in the US dollar overnight and a turn down in energy and equity markets from solid gains. Given the surge in export sales since the break to the early October lows, it appears that demand is just too strong near and under $6.00, so the market has consolidated near $6.50 to gauge if this is high enough to slow demand enough to avoid extreme tightness for the 2011/12 season. Producer selling remains slow. The emergence of China buying corn to restock reserves has already caused many traders to adjust export demand higher for the coming season. December corn closed up 1 3/4 cents on the session Friday and closed up 40 cents on the week. A bullish tilt to outside market forces, strong weekly export sales and talk that China may be buying more corn helped support the strong gains early in the session Friday, but the market gave back all of the early gains into the mid-session and then pushed lower on the day. Some light rains across the eastern Corn Belt might slow harvest somewhat into the middle of this week, but no major slowdown is anticipated. Traders see a dry trend for the next two weeks as good weather for harvest. Harvest is expected to be near 40-45% complete for tonight's update from 33% last week. Weekly export sales for corn, released before the open on Friday, came in at 1.258 million tonnes for the current marketing year and 85,400 for the next marketing year for a total of 1.344 million tonnes. This was well above trade expectations and above 1 million for the third time in the past five weeks. Cumulative corn sales stand at 45.2% of the USDA forecast for 2011/12 (current) marketing year versus a 5 year average of 32.8%. Sales of 471,000 metric tonnes are needed each week to reach the USDA forecast. Funds were noted buyers on the session Friday and for the week last week, and they were noted buyers in a wide range of commodity markets. The Commitments of Traders reports as of October 11th showed non-commercial traders were net long 180,695 contracts, a decrease of 18,134 for the week. The selling trend is seen as a short-term negative force. Commodity index traders held a net long position of 334,685 contracts, up 2,098.