Table 2.
Poisoning symptoms after the GC16 treatment.
| Treatment (g/L) | 20 min | 40 min | 2 h | 4 h | 6 h | 8–18 h | 18–24 h |
|---|---|---|---|---|---|---|---|
| Control (0) | feed and oviposit actively | feed and oviposit actively | feed and oviposit actively | feed and oviposit actively | feed and oviposit actively | feed and oviposit actively | feed and oviposit actively |
| GC16 (2.00) | stationary | stationary | moved slightly | moved slightly | 1. crawled 2. moved slightly 3. stationary/died |
1. crawled 2. moved slightly 3. died |
1. crawled 2. wiggled when tapped 3. died |
| GC16 (6.67) | stationary | stationary | stationary | stationary/died | stationary/died | died, started shrinking | shriveled |
Note: 2.00 g/L (LC50) is the concentration of GC16 lethal to 50% of adult mites, while 6.67 g/L, the recommended concentration for field use, is the concentration of GC16 lethal to approximately 85% of the adult mites.