Evaluation of botanical oils in management the population of okra sucking pests and their predators Moawad S.S.*, Ebadah I.M.A. Pests and Plant Protection Department, National Research Center, El Buhouth street, Dokki, Cairo, Egypt *Corresponding author's E-mail: abzs9999@yahoo.com, info@nrc.sci.eg
Online published on 12 November, 2019. Abstract The present study was targeted to test efficacy of three vegetables oils namely jojoba, Sammondsia chinensis (Link), moringa or ben oil tree, Moringa oleifera (Lam) and fringe rue graces, Ruta chalepensis (L.) against aphids (Aphis gossypii), leafhopper (Empoasca decipiens) and their predators. The results revealed that the most effective oil toward aphids was R. chalepensis followed by M. oleifera and S. chinensis under laboratory condition. Under field condition, there isn't significance variation (P≤0.05) between three tested oils toward aphids and leafhopper, however, both caused reduction in the pest population. The highest effect (more than 89% reduction) of tested oils toward both sucking insects occurred after three days and decreased gradually reach to over 50% reduction in pest population. On other side the population of predators (Coccinellidae) was slightly affected after three days of spraying but no more mortality were noticed among them along the experiments. Top Keywords Aphids, jassid, jojoba, moringa, mortality, population density, population reduction, predators, ruta, vegetable oils. Top |