Studies on environmentally harmless insecticide containing Rynaxypyr for white cabbage protection against caterpillars.

摘要

Field experiments were conducted in Poland, in 2007-08, to determine the effectiveness of the insecticide DPX-E2Y45 20 SC against the following larvae: Pieris rapae; Mamestra brassicae; and Plutella xylostella. The insecticide was applied at 0.075, 0.1, 0.125 and 0.15 litre/ha and compared to the standard Nurelle D 550 EC at 0.5 litre/ha. DPX-E2Y45 20 SC showed a high efficiency, similar to the standard insecticide. The active substance of DPX-E2Y45 20 SC (rynaxypyr) has not been registered in Poland yet. Rynaxypyr is a ryanodine receptor agonist which causes death through muscle paralysis. It belongs to a new, promising class of insecticides, the anthranilic diamides. Because of its unique chemical structure and breakthrough mode of action, rynaxypyr is an exceptional product for the control of pest populations resistant to other insecticides.