Table 1.
Determination of the effectiveness of oxalic acid applied by drip for colonies of group I (100g of oxalic acid in 1 liter of syrup) (August–September 2012-Boumerdes area)
| Number of colony |
Number of dead Varroa (oxalic acid) (A) |
Number of dead Varroa (Apivar®) (B) |
Total number of dead Varroa (A+B) |
(A) Effectiveness of oxalic acid (B) / (A+B)*100 |
|---|---|---|---|---|
| 1 | 345 | 271 | 616 | 78,50 |
| 2 | 245 | 251 | 496 | 86,34 |
| 3 | 167 | 15 | 182 | 91,65 |
| 4 | 390 | 114 | 504 | 77,31 |
| 5 | 401 | 175 | 576 | 69,54 |
| 6 | 290 | 65 | 355 | 81,65 |
| 7 | 189 | 61 | 250 | 75,45 |
| 8 | 365 | 178 | 543 | 67,20 |
| 9 | 423 | 54 | 477 | 88,65 |
| 10 | 289 | 19 | 308 | 93,76 |