| Treatments Liters of potassium silicate/ha | Number of alive mites per coffee leaf* | ||
| At 3 days after the application | At 7 days after the application | At 21 days after the application | |
| 1. Control | 19.60 ± 09.26 a | 44.60 ± 13.01 a | 50.00 ± 00.00 a |
| 2. 2 liters | 10.80 ± 10.98 ab | 08.80 ± 14.17 b | 06.80 ± 01.09 b |
| 3. 4 liters | 04.60 ± 10.28 b | 09.00 ± 13.47 b | 02.00 ± 00.00 cd |
| 4. 6 liters | 00.40 ± 00.89 b | 07.00 ± 06.70 b | 00.20 ± 00.45 d |
| 5. 8 liters | 02.20 ± 04.92 b | 03.80 ± 06.94 b | 03.40 ± 02.07 cd |
| 6. 10 liters | 00.00 ± 00.00 b | 02.80 ± 01.79 b | 00.00 ± 00.00 d |