Chicago corn and soybean dropped while wheat rose slightly Friday. The most active corn contract for May delivery dropped 6.75 cents, or 0.92 percent, to close at 7.2625 dollars per bushel. May wheat rose one cent, or 0.14 percent, to settle at 7.2975 dollars per bushel. May soybeans lost 8.5 cents, or 0.59 percent, to close at 14.405 dollars per bushel. Profit taking pending the weekend sent down May corn Friday. A private grains analyst estimated that the U.S. 2013-14 area sowed to corn would reach 97.75 million acres, down from prior estimate of 99.3 million acres. Weather in Argentina remained dry this week and into the weekend, and the Ministry of Agriculture in Argentina estimated 2012-13 production at 25.7 million tonnes, up from 21.2 million tonnes a year ago, negative to corn prices. May wheat contract was almost unchanged Friday. The same private analyst estimated wheat planting acreage for 2013-14 at 56.07 million, down from prior estimates of 56.24 million acres, supportive of wheat. Investors are also looking ahead to Iraq wheat export tender next week. Many expect the U.S. to take a portion or all of the business. Profit taking after the sharp gains Thursday dominated Friday\'s soybean market. The private analyst estimated 2013-14 soybean planted acreage in the U.S. at 78.46 million, down from the previous estimate of 78.78 million acres, but up from 2012-13 planted acreage of 77.2 million acres, dampening soybean. It is reported that the government of Brazil may scrap the processor tax credits on the domestic market and instead apply processor tax credits to export sales of soybean. If true, this will be negative to normal soybean exports.