Bozeman MT - BOZM
Data is up through May 6, 2026
Growing Degree Days since January 1:
Apple Maggot
Biofix: January 1, 2026
Degree Days since Biofix:416
Management Action 1 Week Ago:none
Present Management Action:none
Management Action for the Next 3 Weeks:none
For a current Apple Maggot summary click here.
Billbugs
Biofix: January 13, 2026
Degree Days since Biofix:752
Management Action 1 Week Ago:none
Present Management Action:none
Management Action for the Next 3 Weeks:May 20 - 30% of adult billbugs are present. If making a preventive treatment (for example, neonicotinoids, anthranilic diamides, or pyrethroids), apply now.
For a current Billbugs summary click here.
Cereal Leaf Beetle
Biofix: May 6, 2026
Degree Days since Biofix:0
Management Action 1 Week Ago:none
Present Management Action:none
Management Action for the Next 3 Weeks:May 19 to May 21 - Peak CLB egg numbers occur on small grain foliage.
Early scouting now can identify fields that could be at risk of significant CLB damage this year.
It is too early to take control action, however (instead, scouting should be repeated at 325).
Early scouting now can identify fields that could be at risk of significant CLB damage this year.
It is too early to take control action, however (instead, scouting should be repeated at 325).
For a current Cereal Leaf Beetle summary click here.
Codling Moth - Trap Biofix
Biofix: Not established yet for 2026
Degree Days since March:172
Management Action 1 Week Ago:April 28 to May 1 - Place pheromone monitoring traps in orchard before bloom to get biofix (first moth flight). Check traps daily until first moths are caught.
Present Management Action:May 6 to May 10 - First moths expected in pheromone traps.
Management Action for the Next 3 Weeks:none
For a current Codling Moth - Trap Biofix summary click here.
Fire Blight
*This model only applies when trees are in bloom.
4-day Risk Value: 33
Blight potential for today and next two days:
For a current Fire Blight summary click here.
4-day Risk Value: 33
Blight potential for today and next two days:
| Condition | Today | Tomorrow | Next Day |
|---|---|---|---|
| If blight was in your orchard last year | LOW | LOW | LOW |
| If blight was only nearby last year | LOW | LOW | LOW |
| If no blight last year | LOW | LOW | LOW |
Greater Peachtree Borer
Biofix: January 1, 2026
Degree Days since Biofix:197
Management Action 1 Week Ago:none
Present Management Action:none
Management Action for the Next 3 Weeks:none
For a current Greater Peachtree Borer summary click here.
Obliquebanded Leafroller
Biofix: Not established yet for 2026
Degree Days since March:355
Management Action 1 Week Ago:none
Present Management Action:none
Management Action for the Next 3 Weeks:May 27 to June 3 - Hang pheromone trap in orchard.
For a current Obliquebanded Leafroller summary click here.
Peach Twig Borer
Biofix: Not established yet for 2026
Degree Days since March:172
Management Action 1 Week Ago:none
Present Management Action:none
Management Action for the Next 3 Weeks:May 25 - Place pheromone trap in orchard to get biofix (first moth flight)
For a current Peach Twig Borer summary click here.
San Jose Scale
Biofix: Not established yet for 2026
Degree Days since March:155
Management Action 1 Week Ago:none
Present Management Action:none
Management Action for the Next 3 Weeks:none
For a current San Jose Scale summary click here.
Spotted Wing Drosophila
Biofix: January 1, 2026
Degree Days since Biofix:197
Management Action 1 Week Ago:none
Present Management Action:none
Management Action for the Next 3 Weeks:none
For a current Spotted Wing Drosophila summary click here.
Walnut Husk Fly
Biofix: January 1, 2026
Degree Days since Biofix:564
Management Action 1 Week Ago:none
Present Management Action:none
Management Action for the Next 3 Weeks:none
For a current Walnut Husk Fly summary click here.
Western Cherry Fruit Fly
Biofix: Not established yet for 2026
Degree Days since March:564
Management Action 1 Week Ago:none
Present Management Action:none
Management Action for the Next 3 Weeks:none
For a current Western Cherry Fruit Fly summary click here.
