Picture Logo for UMaine Cooperative Extension
CRANBERRIES
cranberry uprights for decorationbutton for linking back to UMaine Cooperative Extension's Cranberry home page
Degree Day Accumulations & Model Development
(for cranberry tipworm flies + blackheaded fireworm larvae)
2009
LOCATION
DATE
Monitoring State Date was April 2nd
Degree Days Accumulated
(Base Temperature of 45F)
Degree Days Accumulated
(Base Temperature of 50F)
Troy
As of end of 4/27/2009
150.5
72
As of end of 5/13/2009
(2 tipworm flies found)
(1 blackheaded fireworm larva found)
402 (STOP)
238.5 (STOP)
 PEST
YEAR
Degree Days Measured
Using Base Temperature of 45F
Degree Days Measured
Using Base Temperature of 50F
Cranberry Tipworm Flies
2007
~510
~344
2008
~377.5
~218
2009
402
238.5
3-yr AVG:
430
267
Averaging just 2008 and 2009:
More variability here so I think using a base of 50F will make for a better model
228
(The 'magic' number I would propose using after 3 years of data)
PEST
YEAR
Degree Days Measured
Using Base Temperature of 45F
Degree Days Measured
Using Base Temperature of 50F
Blackheaded Fireworm
larvae
2007
~456
~301
2008
~377.5
~218
2009
402
238.5
AVG:
412
252.5
Total soil DD measured for Tipworm (flies) & Blackheaded Fireworm (larvae), for 2007-2009.
If you have comments or questions about this page,
contact Charles Armstrong at: charlesa@umext.maine.edu
Putting knowledge to work with the people of Maine
The University of Maine Cooperative Extension Pest Management logo
Accessibility | Non-discrimination and Disability Resources | Non-disclosure | Contact
A Member of the University of Maine System
These pages are maintained by the Pest Management Office, University of Maine Cooperative Extension.
Page Last Modified: 5/14/09