EFFECTS OF 8 BRIGHTENERS AS SOLAR-RADIATION PROTECTANTS FOR STEINERNEMA-CARPOCAPSAE, ALL STRAIN

Seven commercially available Blankophor fluorescent brighteners were c ompared with the standard Tinopal LPW as solar radiation protectants f or Steinernema carpocapsae (All strain). Blankophor BBH and Tinopal LP W were the most successful UV screens, with 95% of the original nemato de infectivity to larvae of the greater wax moth, Galleria mellonella, retained after 4 hours of exposure to direct sunlight. The Blankophor HRS and DML preserved 80 and 85% infectivity, and the P167 preserved 70% infectivity after the sunlight exposure. The other Blankophors (RK H, LPG, and BSU) were not as effective.