Bacillus thuringiensis serovar. israelensis (ABG-6108) against chironomids and some nontarget aquatic invertebrates

Abstract

A wettable powder formulation (ABG-6108) of Bacillus thuringiensis serovar. israelensis was tested against chironomid larvae in experimental ponds at 1, 2, 3, 4 and 10 kg/ha (0.25-2.5 ppm), and in a golf pond at 3 kg/ha (0.5 ppm). Significant reductions (18-88%) in populations of Chrinomini and Tanytarsini experimental ponds, and 27-65% reduction of midges in the golf pond occurred during the 4-week evaluation period. The highest dose in experimental ponds had no adverse effects on rotifers, Cyclops spp., Daphnia sp., ostracods, Baetis sp., corixids and notonectids, and Coleoptera. The nontarget invertebrates in the golf pond also remained unaffected. © 1981.