Table 5.
Effect of different concentrations of cotton seed cake extract on the penetration of J2s of M. incognita in the roots of tomato over 3 and 5 days.
| Treatment | Concentrations (mg/L) | Number of Penetrated J2s (Mean ± SE) at Different Time Intervals (Days) | |
|---|---|---|---|
| 3 | 5 | ||
| Cotton seed cake |
250 | 48 a ± 2.08 (40.00%) |
54 a ± 2.52 (32.50%) |
| 500 | 39 b ± 2.08 (51.25%) |
45 b ± 2.65 (43.75%) |
|
| 750 | 30 c ± 2.31 (62.50%) |
37 bc ± 2.08 (53.75%) |
|
| 1000 | 25 d ± 1.53 (68.75%) |
29 c ± 1.73 (63.75%) |
|
| Df | 3 | 3 | |
| Sum of Squares | 927 | 1034.25 | |
| Mean Squares | 309 | 344.75 | |
| F-Calculated | 15.84 | 18.89 | |
| Significance | 0.001 | 0.0005 | |
Each value is an average of five replicates. SE—Standard Error. J2s—second-stage juveniles. Values given in parentheses represent percent inhibition of J2s’ penetration in the roots of tomato. Values given without parentheses represent number of J2s penetrating the roots of tomato. Values followed by the same letter within a column, are not significantly different according to Duncan’s multiple-range test (p ≤ 0.05).