Bozeman MT - BOZM
Data is up through September 16, 2025
Growing Degree Days since January 1:
Apple Maggot
Biofix: January 1, 2025
Degree Days since Biofix:2811
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, 2025
Degree Days since Biofix:3906
Management Action 1 Week Ago:none
Present Management Action:none
Management Action for the Next 3 Weeks:none
For a current Billbugs summary click here.
Cereal Leaf Beetle
Biofix: May 6, 2025
Degree Days since Biofix:2562
Management Action 1 Week Ago:none
Present Management Action:none
Management Action for the Next 3 Weeks:none
For a current Cereal Leaf Beetle summary click here.
Codling Moth - Trap Biofix
Biofix: May 11, 2025
Degree Days since Biofix:1791
Moth Flight: Moth Flight is over for the season
Egg Hatch: Egg Hatch is over for the season
Management Action 1 Week Ago:September 8 to September 9 - Second Generation, end of peak egg hatch.
Egg hatch is waning for the second generation, and will be completely over by 2100 degree days.
Egg hatch is waning for the second generation, and will be completely over by 2100 degree days.
Present Management Action:none
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.
Greater Peachtree Borer
Biofix: January 1, 2025
Degree Days since Biofix:1908
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: June 27, 2025
Degree Days since Biofix:1692
Management Action 1 Week Ago:September 8 to September 10 - Second generation egg hatch begins; apply treatment now if necessary.
Present Management Action:none
Management Action for the Next 3 Weeks:none
For a current Obliquebanded Leafroller summary click here.
Peach Twig Borer
Biofix: June 10, 2025
Degree Days since Biofix:1560
Moth Flight: Moth Flight is over for the season
Egg Hatch: Egg Hatch is over for the season
Management Action 1 Week Ago:none
Present Management Action:none
Management Action for the Next 3 Weeks:none
For a current Peach Twig Borer summary click here.
San Jose Scale
Biofix: May 11, 2025
Degree Days since Biofix:1683
Males: Adult Males is over for the season
Crawlers: Crawlers is over for the season
Management Action 1 Week Ago:September 8 to September 12 - Second generation crawlers are most active now. If you have a heavy infestation, treat at this time with Esteem or 1% horticultural oil. Otherwise, wait and spray with oil next spring at budbreak.
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, 2025
Degree Days since Biofix:1966
Management Action 1 Week Ago:none
Present Management Action:September 17 to September 19 - Continue to keep fruit protected with insecticides if spotted wing has been confirmed on your fruit farm.
Peak egg-laying by 3rd generation flies is now occurring.
Peak egg-laying by 3rd generation flies is now occurring.
Management Action for the Next 3 Weeks:none
For a current Spotted Wing Drosophila summary click here.
Walnut Husk Fly
Biofix: January 1, 2025
Degree Days since Biofix:3285
Management Action 1 Week Ago:September 9 - 50% of adults have emerged.
Present Management Action:September 23 - 90% of adults have emerged.
Management Action for the Next 3 Weeks:September 23 - 90% of adults have emerged.September 28 - Larvae begin exiting the host fruits or nuts to drop to the ground to pupate.
For a current Walnut Husk Fly summary click here.
Western Cherry Fruit Fly
Biofix: Not established yet for 2025
Degree Days since March:3285
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.