Table 3.
Growth inhibitory activity of polyketide metabolite against H. armigera and S. litura
| Concentration (ppm) |
H. armigera |
S. litura |
||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| N* | Larval duration (d) | Pupicidal (%) | N* | Pupal duration (d) | N* | Larval duration (d) | Pupicidal (%) | N* | Pupal duration (d) | |
|
Polyketide metabolite | ||||||||||
| 125 |
42 |
10.09 ± 0.44b |
20.99 ± 4.15b |
33 |
11.45 ± 0.40b |
43 |
10.02 ± 0.29a,b |
18.51 ± 6.33b |
35 |
10.28 ± 0.22a |
| 250 |
33 |
10.91 ± 0.35b,c |
32.58 ± 5.20b,c |
24 |
12.35 ± 0.46b,c |
34 |
10.44 ± 0.87b |
25.06 ± 7.22b |
25 |
11.53 ± 0.69b |
| 500 |
24 |
12.55 ± 0.37c |
42.55 ± 3.47c |
14 |
13.50 ± 0.70c |
21 |
11.96 ± 0.45c |
47.13 ± 10.9c |
11 |
13.86 ± 0.63c |
| 1000 |
18 |
13.98 ± 0.51d |
62.01 ± 11.7d |
8 |
15.45 ± 1.03d |
18 |
13.96 ± 0.92c |
55.06 ± 9.12c |
8 |
14.4 ± 0.54cd |
|
Azadirachtin | ||||||||||
| 125 |
26 |
14.09 ± 0.16e |
70.45 ± 9.04d |
8 |
17.95 ± 0.54e |
23 |
14.56 ± 0.26d,e |
47.40 ± 7.48c |
12 |
14.10 ± 0.48c |
| 250 |
17 |
15.8 ± 0.74f |
100 ± 00e |
|
|
15 |
15.95 ± 0.98e |
76.08 ± 12.9d |
4 |
15.24 ± 0.5d |
| 500 |
0 |
|
|
|
|
|
|
|
|
|
| 1000 | ||||||||||
| Control | 48 | 9.08 ± 0.15a | 0a | 48 | 9.58a | 48 | 8.95 ± 0.49a | 48 | 11.12 ± 0.39a | |
Mean ± SD within columns followed by the same letter do not differ significantly using Tukey’s test, P ≤ 0.05. N*: number.