Table 1 Efficiency of different concentrations of jatropha oil on reduction percentage of Varroa mites infestation in honey bee colonies
Treatment | Concentration | Mean percentage of Varroa infestation on worker brood | Mean percentage of Varroa infestation on adult workers | ||
|---|---|---|---|---|---|
Mean of Varroa infestation | % of Varroa reduction | Mean of Varroa infestation | % of Varroa reduction | ||
Before treatment | 1% | 16.00 a | – | 18.75 a | – |
2% | 25.00 a | – | 17.50 a | – | |
5% | 20.00 a | – | 12.25 a | – | |
10% | 18.00 a | – | 10.75 a | – | |
Control | 12.00 a | – | 10.00 a | – | |
F value | 1.90NS | – | 1.13NS | – | |
First treatment | 1% | 9.00 a | 64.47 | 19.00 a | 34.02 |
2% | 14.00 a | 64.63 | 17.75 a | 37.5 | |
5% | 15.00 a | 52.63 | 22.75 a | 16.07 | |
10% | 12.00 a | 57.89 | 16.75 a | 16.90 | |
Control | 19.00 a | – | 16.50 a | – | |
F value | 2.03NS | – | 0.41NS | – | |
Second treatment | 1% | 9.00 b | 62.5 | 23.50 a | 48.84 |
2% | 7.00 b | 81.3 | 23.75 a | 45.77 | |
5% | 8.00 b | 73.33 | 18.50 a | 38.35 | |
10% | 8.00 b | 70.37 | 22.00 a | 16.44 | |
Control | 18.00 a | – | 24.50 a | – | |
F value | 9.04** | – | 0.33NS | – | |
Third treatment | 1% | 5.00 b | 85.57 | 8.50 b | 74.09 |
2% | 10.00 b | 81.35 | 8.00 b | 73.87 | |
5% | 12.00 b | 72.30 | 11.25 b | 47.52 | |
10% | 9.00 b | 76.92 | 9.25 b | 50.82 | |
Control | 26.00 a | – | 17.50 a | – | |
F value | 7.65** | – | 3.62* | – | |
Fourth treatment | 1% | 3.00 b | 88.75 | 10.50 b | 63.27 |
2% | 6.00 b | 85.60 | 4.25 c | 84.07 | |
5% | 5.00 b | 85.00 | 7.50 bc | 59.85 | |
10% | 5.00 b | 83.33 | 7.75 bc | 52.63 | |
Control | 20.00 a | – | 15.25 a | – | |
F value | 15.90** | – | 10.55** | – | |