Glawe, D. A., Pelter, G. Q., and du Toit, L. J. 2005. First report of powdery mildew of carrot and parsley caused by Erysiphe heraclei in Washington State. Online. Plant Health Progress doi:10.1094/PHP-2005-0114-01-HN.       www.plantmanagementnetwork.org/pub/php/brief/2005/carrot/