EFFECT OF Conocarpus erectus LEAVES ON NYMPHS AND ADULTS OF THE TWO-SPOTTED SPIDER MITE Tetranychus urticae

Abstract

Abstract. The research was carried out at the Beneficial Insects Laboratory in the Department of Biocontrol Technologies, College of Technical Engineering Al-Musayyib, Al-Furat Al-Awsat Technical University, which tested different concentration of Conocarpus erectus alcoholic extract (0.5, 1, 2, 3)% on the percentage of mortality of nymphs and adults of the two-spotted spider mite Tetranychus urticae. Shows the effective acaricidal property of the alcoholic extract which had caused 100% mortality of nymphs and adults at 3% concentration after seven days, while only 20% nymph mortality and 0% adult mortality was observed at 0.5% concentration. From the results presented, it is clear that the nymphs have more mortality compared to adults and also mortality rate increases with increasing concentration and time, it contains 10 bio active compounds according to GC-MS analysis.

Keywords: Conocarpus erectus; botanical acaricide; acaricidal activity; T. Urticae ; biopesticide.