. 2018 Jun 3;50(2):147–162. doi: 10.21307/jofnem-2018-008

Table 3.

Repellent activity of aqueous Vetiveria zizanioides (vetiver) extracts on Meloidogyne incognita second-stage juveniles. The chemotaxis index (CI) was recorded after 24 hr.

Treatment^a	CI^b
2-mon VRA 0.1 g/ml	−0.5 b^c
2-mon VSA 0.1 g/ml	−0.6 b
Control sterile distilled water	0.0 a

^aVRA = vetiver root aqueous extracts from greenhouse-grown, 2-mon-old cv. Sierra; VSA = vetiver shoot aqueous extracts from greenhouse-grown, 2-mon-old cv. Sierra.

^bChemotaxis index (CI): ⩾0.2 indicated an attractant; between 0.2 and 0.1, a weak attractant; 0.1 to −0.1, without effect; between −0.1 and −0.2, a weak repellent; and ⩽−0.2, a repellent.

^cValues are means of five replications in each of the two trials, for a total of N = 10. Differences among treatments were determined by analysis of variance (ANOVA) and means were compared using Tukey-Kramer’s adjustment for multiple comparisons (P ⩽ 0.05). Similar lower case letters indicate that means are not significantly different.