Year 2014 Growing Degree Days (GDD) (using a base temperature of 50°F):
Cranberry Tipworm eggs first appearing: ~225 GDD (but crop stage is a more accurate predictor, I feel; eggs generally appear as soon as tiny new shoots begin to arise from the runners, and are deposited almost exclusively on the tips of the new shoots). Black-headed Fireworm larvae first hatching: ~252 GDD (The target number for these two pests is an average from the years 2007 – 20013).
Update through April 13th, 2014:
- Bangor: 0 GDD
- Houlton: 0 GDD
- Lewiston-Auburn: 0 GDD
- Bar Harbor: 0 GDD
Cranberry questions? Contact Charles Armstrong, Cranberry Professional. University of Maine Cooperative Extension || Pest Management Office || 491 College Avenue || Orono, ME 04473-1295 || Tel: 207.581.2967 [email: email@example.com]