Table 2: The state of D. veneta vermipopulations in oil-contaminated soil (Experiment 2) after 22 weeks of incubation
Sample No. | Survival % | Total population pcs. | Total productivity cocoons/container | Individual productivity cocoons/species |
1. Control | 100 | 33 ± 0.98 | 3.4 ± 0.05 | 1.5 ± 0.01 |
2. Microbiological preparation | 100 | 95 ± 2.05 | 15.4 ± 0.12 | 2.1 ± 0.01 |
3. Soil with petroleum concentration 20 g/kg | 100 | 112 ± 2.33 | 27.2 ± 0.56 | 2.96 ± 0.02 |
4. Soil with petroleum concentration 20 g/kg and biopreparation | 100 | 88 ± 1.98 | 20.3 ± 0.51 | 2.45 ± 0.02 |
5. Soil with petroleum concentration 40 g/kg | 100 | 126 ± 2.5 | 23.8 ± 0.55 | 2.76 ± 0.02 |
6. Soil with petroleum concentration 40 g/kg and biopreparation | 0 | 0 | 0 | 0 |
7. Soil with petroleum concentration 60 g/kg | 100 | 146 ± 2.75 | 36.3 ± 0.89 | 3.14 ± 0.03 |
8. Soil with petroleum concentration 60 g/kg and biopreparation | 0 | 0 | 0 | 0 |