Effects of NeemAzal‐T/S on different developmental stages of rose aphid, Macrosiphum rosae

Natural insecticides often do not provide a strong knock-down effect and have lower efficacy than synthetic pesticides. For an effective application of natural insecticides, it is essential to know the product’s mode action in detail. The commercial neem [Azadirachta indica A. Juss (Meliaceae)] product NeemAzal-T/S its influence on stage-specific mortality, development, reproduction rose aphids, Macrosiphum rosae L. (Hemiptera: Aphididae), were determined greenhouse trials. had 40% against M. standard trials with initial infestations between 100 270 aphids per plant. However, has significant impact survival nymphs first third instar as well juvenile development. Nymphs treated exhibit delay molting second most them die before molt. Furthermore, adult females reduced when are exposed sub-lethal concentrations instars. Population growth inhibited or delayed plants NeemAzal-T/S. results indicate that applications can be used control integrated pest management (IPM) systems. Because this insecticide no rapid combinations enemies insects other possibilities enhance efficacy.