Cooley Spruce Adelgid Scouting for 2013 at Pigeon (Report issued 5/24/2013 9:29)
Use these predictions as guidelines to help time your scouting efforts.
| Key event |
Timing |
| First adults active; egg laying begins. |
4/22 through 5/3 |
| Eggs start to hatch; nymphs start to feed. |
Started on 5/6 and expected to continue for 2 more DD (Base 50°F) |
| Galls start to form. |
Started on 5/15 and expected to continue for 2 more DD (Base 50°F) |
Current stage:
Galls are starting to be visible.Degree day total:
309 on
5/24/2013Treatment Guidelines for Cooley Spruce Adelgid
Soil Drench Treatment Window: Closed
NURSERY AND LANDSCAPE ONLY: If galls were a problem the previous year,
apply a basal soil drench of imidacloprid or clothianidin in early spring (between 40 and 80 DD Base 50F).Spring Foliar Treatment Window: Closed
If galls were a problem the previous year,
apply an insecticide as foliar spray when the DD Base 50 F total is between 25 and 120.
Christmas tree insecticide recommendations
Products registered for use in Christmas trees
