Table 1.
Percentage inactive or dead Meloidogyne incognita second-stage juveniles (J2) in Vetiveria zizanioides (vetiver) shoot aqueous (VSA) extracts and vetiver root aqueous (VRA) extracts.
| Percentage inactive J2 | Percentage dead J2 | ||
|---|---|---|---|
| Treatmenta | Day 1 | Day 2 | Day 3 rinsed |
| VSA 94% | 53.4 bAb | 70.4 abA | 68.2 aA |
| VRA 94% | 79.6 aAB | 86.7 aA | 71.9 aA |
| VSA 71% | 46.2 bB | 63.5 bcA | 71.1 aA |
| VRA 71% | 74.4 aA | 72.1 abA | 68.0 aA |
| VSA 47% | 39.8 bcB | 49.3 cdB | 67.6 aA |
| VRA 47% | 50.3 bA | 49.8 cdA | 53.4 abA |
| VSA 24% | 23.7 cdB | 38.3 dAB | 56.3 abA |
| VRA 24% | 16.6 deB | 34.3 deA | 43.6 bA |
| 0.48 mg/ml streptomycin sulfate | 14.7 deA | 18.7 efA | 22.3 cA |
| Water | 6.7 eB | 9.8 fAB | 17.5 cA |
aAll extracts were from shoots or roots of greenhouse-grown, 2-mon-old vetiver cv. Sierra. Treatments were prepared from 100% extracts (undiluted extracts) containing streptomycin sulfate, diluted to 75%, 50%, and 25% with water, and then added to J2 suspensions in the wells. Final extract dilutions in the wells are presented in the table.
bValues are means of eight replications in each of the two trials, for a total of N = 16. 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 within a column; similar upper case letters indicate that means are not significantly different within a row.