Hi Jerry, What Microbial Pesticides are you testing? I have just finished a cooperative experiment using 3 fungi species to control whitefly on Poinsettias. After Jan we will re do the exp on Gerbera. Beauveria, Metarhizum and a PFR were applied under greenhouse conditions, with the best control from natural Verticillum infection. Is there a concern that this type of fungi used in pest control might infect Bees? Phil Soderman [log in to unmask]