LAFAYETTE, Ind. - Halloween lovers hoping to create the perfect jack-o-lantern might want to shop carefully this year because of a pumpkin fungus that has put a dent in some crops. Two types of fungus or rot have affected crops from the Midwest to New England, causing pumpkins to develop mold in some spots and then begin decomposing, said Daniel Egel, a Purdue University Extension plant pathologist. The entire inside of the pumpkin eventually rots until the shell falls apart. A combination of high temperatures and record rain in August has helped the fungi flourish, Egel said. Nina Kent, co-owner...