"FMC Corp., the Philadelphia producer of natural soda ash, surged the most in more than four years on the New York Stock Exchange yesterday after a Gabelli & Co. analyst said Thursday's steep decline was "unfounded." FMC climbed $5.16, or 13 percent, to $45.50, the biggest gain since March 2004. FMC shares declined amid concern that demand is slowing for fertilizer and products used on row crops such as corn and soybeans, Gabelli analyst Rob Felice said yesterday. FMC's agriculture segment, however, doesn't make fertilizers and its herbicides and pesticides are used on niche crops such as vegetables and sugar cane, he said. - Bloomberg News"