Author: I. KEPENEKC I AND A. SUSURLUK

Publishing Date: 2006

E-ISSN: 0255-7576

Volume 24 Issue 1

ABSTRACT:

The mealy plum aphid (MPA), Hyalopterus pruni (Geoffroy) (Homoptera: Aphididae) is the most severe pest of plum in Turkey, Entomopathogenic nematodes appear to be a candidate to control this pest. Two entomopathogenic nematode isolates viz., Steinernema feltiae (All type) and S. feltiae (S3) (Rhabditida: Steinernematidae) were evaluated against the MPA adult using three doses [25, 50 and 100 infective juveniles (IJ) / 0.2 ml distilled water per adult insect] and at three different temperatures (10, 15 and 25° C). The mortality was recorded after 72 and 96 h of each incubation. According to the results of death ratio in MPA adults after 96 h application are; All type at 25 IJ / 0.2 ml water per adults; 41.6 % at 10, 15° C and 47.2 % at 25° C; for S 3; 38.8 % at 10° C; 41.6 % at 15° C and 47.1 % at 25 ° C; All type at 50 IJ / 0.2 ml water per adults; 50 % at 10° C; 61.1 % at 15° C an d 66.6 % at 25° C; for S 3; 55.5 % at 10° C; 63.8 % at 15° C and 69.4 % at 25° C; All type at 10 0 IJ / 0.2 ml water per adults; 58.3 % at 10° C; 72.2 % at 15° C and 74.9 % at 25° C; for S 3; 66.6 % at 10° C; 77.7 % at 15° C and 83.3 % at 25° C. These results suggested that entomopathogeni c nematodes could be used in controlling MPA.