Farming equipment maker AGCO Corp expects its 2013 profit to be in a range mostly above Wall Street's forecast, citing growing sales of tractors to harvest sugarcane in South America. The company, which competes fiercely with rival Deere & Co , expects 2013 earnings per share of $5.50 to $5.75 per share. Analysts on Wall Street have expected earnings of $5.56 per share for 2013, according to Thomson Reuters I/B/E/S. AGCO expects sales in South America to increase 5 percent to 10 percent next year…