NEMATICIDAL ACTIVITY OF AQUEOUS EXTRACTS FROM LEAVES OF RUTA GRAVEOLENS ON XIPHINEMA INDEX

Abstract

Aqueous extracts from leaves of Ruta graveolens had a high nematicidal effect against Xiphinema index, in vitro. The LD-50 values, obtained by probit analysis, ranged between 83.14% and 1.79% of a standard solution. Nematode mortality increased with the increase of the leaf extract concentration and the exposure time. There was a high negative correlation (r = -0.973) between the log[sub1][sub0] of these two parameters.