Effect of olive residue (fitura) extract on the mortality and hatching of certain plant parasitic nematodes

Abstract

The mortality of juveniles of Meloidogyne javanica and Tylenchulus semipenetrans and adults of Xiphinema italiae and Tylenchorhynchus goffarti and hatching of A/, javanica eggs, in olive residue extract was studied. With an increase in concentration and exposure time, the percent mortality of all nematodes tested was 100% in standard solution (S). In S/2 (50% dilution), the mortality of X. italiae and T. semipenetrans was also 100% but for M. javanica and T. goffarti, it was 92% and 71.2%, respectively. Juveniles hatching of M. javanica was found to be inhibited at different concentrations of the extract (i.e. S, S/2, S/5, S/10, S/20, S/50 and S/100) compared to control (Distilled water). It was found that standard solution (S) after 24 hours completely suppressed hatching, while few juveniles emerged after 48, 72 and 96 hours of exposure.