Effect of Some Compounds Against Pupae of Spodoptera littoralis (boisd.) With Some Depths and Ages

Abstract

The effect of some compounds Naoumil 90% SP, Diflorate 25%WP, Match 5% EC,Extreme 36% Sc and Pyrethrum 5%EC were tested against immerging newly-formed, 3 days and 6-day-old pupae of the cotton pest Spodoptera littoralis (Boisd) in sand-soil at a depth of 5, 10 and 15 cm in the laboratory at 25±1°C and 70±5% RH. Data revealed the compounds on pupae of Spodoptera littoralis (Boisd)after newly formed with depth 10 cm, results indicated that Pyrethrum 5% EC (Pyrethrins) 100%; Diflorate 25%WP (Diflubenzuron) & Naoumil 90% SP (Methomyl) gave 80%; Extreme 36% Sc (Methoxyfenzide + Spinetoram) 60% malformation and Match 5% (Lufenuron) Zero% respectively compared with control at depth of 10 cm. While at depth of 15 cm, obtained results indicated that : Pyrethrum 5% EC (Pyrethrins) 100% malformation of adults emergence. While Diflorate 25%WP (Diflubenzuron) exhibited 80% malformation ; Extreme 36% Sc (Methoxyfenzide + Spinetoram) 20% and Naoumil 90% SP (Methomyl ) & Match 5% (Lufenuron) zero% after one day treatments respectively compared with control. It is concluded that treated sandy-soil with some compounds such as (Methomyl, Diflubenzuron, Lufenuron and Pyrethrins), before cultivation an effective integrated pest management method to control S. littoralis in Egypt.