Concentrations | Treatments | No. of aphids per leaf (mean ± SD) | ||||
---|---|---|---|---|---|---|
13 Mar. | 23 Mar. | 02 Apr. | 12 Apr. | 22 Apr. | ||
Control (spray with water) | 18.67 ± 1.91A | 27.73 ± 3.40A | 29.70 ± 3.06A | 31.53 ± 1.70A | 32.90 ± 3.61A | |
0.1% v/v (2.3 × 106/ml) | Naturalis | 13.57 ± 1.37B | 12.47 ± 1.10B | 9.33 ± 0.71B | 6.83 ± 1.01B | 6.50 ± 0.87B |
Isolate 1 | 15.67 ± 1.72 AB | 11.77 ± 2.10B | 10.53 ± 2.47B | 8.70 ± 2.19B | 9.17 ± 2.35B | |
Isolate 2 | 15.40 ± 1.80 AB | 12.23 ± 1.40B | 11.33 ± 2.35B | 8.63 ± 1.90B | 8.00 ± 1.25B | |
Isolate 3 | 13.63 ± 1.80B | 13.00 ± 3.00B | 9.73 ± 2.95B | 8.73 ± 1.72B | 7.40 ± 1.73B | |
Isolate 4 | 13.87 ± 2.28B | 12.57 ± 3.27B | 9.70 ± 1.50B | 9.37 ± 2.00B | 7.40 ± 1.95B | |
0.2% v/v (4.6 × 106/ml) | Naturalis | 7.30 ± 1.78C | 4.60 ± 0.75C | 2.43 ± 0.70C | 1.17 ± 1.07C | 0.47 ± 0.42C |
Isolate 1 | 7.73 ± 2.55C | 4.97 ± 1.10C | 2.50 ± 1.25C | 1.37 ± 1.35C | 0.83 ± 0.42C | |
Isolate 2 | 8.70 ± 2.82C | 4.70 ± 1.25C | 2.63 ± 0.35C | 1.50 ± 1.37C | 0.47 ± 0.57C | |
Isolate 3 | 7.70 ± 2.13C | 5.00 ± 1.73C | 3.13 ± 1.96C | 1.07 ± 1.05C | 0.67 ± 0.61C | |
Isolate 4 | 6.97 ± 2.31C | 3.87 ± 1.17C | 2.97 ± 1.16C | 1.07 ± 0.57C | 0.60 ± 1.04C | |
F values | 11.930 | 34.582 | 52.370 | 100.884 | 97.629 | |
P | < 0.001 | < 0.001 | < 0.001 | < 0.001 | < 0.001 |