Columbus MT - C9321
Data is up through July 14, 2025
Growing Degree Days since January 1:
Apple Maggot
Biofix: January 1, 2025
Degree Days since Biofix:1786
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:2565
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:1393
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 4, 2025
Degree Days since Biofix:1027
Moth Flight: 6.4% of moths in 1st generation have emerged
Egg Hatch: Egg Hatch is over for the season
Management Action 1 Week Ago:July 9 to July 10 - First Generation end of egg hatch.
Your last insecticide spray of the first generation should provide protection up to this date.
Your last insecticide spray of the first generation should provide protection up to this date.
Present Management Action:July 20 to July 21 - Second Generation egg hatch begins.
Start sprays (Delegate, Altacor, Assail, Belt, Intrepid, etc.) and continue every 14-21 days until end of egg hatch, which corresponds to 2100 degree days (typically 2-3 additional sprays depending on temperatures).
Start sprays (Delegate, Altacor, Assail, Belt, Intrepid, etc.) and continue every 14-21 days until end of egg hatch, which corresponds to 2100 degree days (typically 2-3 additional sprays depending on temperatures).
Management Action for the Next 3 Weeks:July 21 to July 22 - Second Generation egg hatch begins.
Start sprays (Delegate, Altacor, Assail, Belt, Intrepid, etc.) and continue every 14-21 days until end of egg hatch, which corresponds to 2100 degree days (typically 2-3 additional sprays depending on temperatures).August 2 to August 4 - Second Generation, start of peak egg hatch.
Make sure fruit is protected at least through the peak period, which ends at 1700 degree days.
Start sprays (Delegate, Altacor, Assail, Belt, Intrepid, etc.) and continue every 14-21 days until end of egg hatch, which corresponds to 2100 degree days (typically 2-3 additional sprays depending on temperatures).August 2 to August 4 - Second Generation, start of peak egg hatch.
Make sure fruit is protected at least through the peak period, which ends at 1700 degree days.
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:1088
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 14, 2025
Degree Days since Biofix:609
Management Action 1 Week Ago:July 6 - If using a Bt product (Bacillus thuringiensis, organic) apply now. Products like Dipel only last 5-7 days and may need to be reapplied to last the larval stage. Note that larvae need to ingest the Bt for it to work. Bt will not work on mature larvae.
Present Management Action:none
Management Action for the Next 3 Weeks:July 29 to August 1 - End of first generation egg hatch.August 10 to August 11 - Second generation moth flight begins.
For a current Obliquebanded Leafroller summary click here.
Peach Twig Borer
Biofix: May 28, 2025
Degree Days since Biofix:820
Moth Flight: Moth Flight is over for the season
Egg Hatch: Egg Hatch is over for the season
Management Action 1 Week Ago:July 13 - End sprays for first summer generation. (Egg hatch ends.)
Present Management Action:none
Management Action for the Next 3 Weeks:August 3 to August 8 - Begin sprays for second summer generation. Choose a later date in this time span if damage was light in your orchard last year. These dates correspond to 5% - 16% egg hatch.
For a current Peach Twig Borer summary click here.
San Jose Scale
Biofix: May 4, 2025
Degree Days since Biofix:981
Males: 23.3% of adult males in 1st generation have emerged.
Crawlers: Crawlers 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 San Jose Scale summary click here.
Spotted Wing Drosophila
Biofix: January 1, 2025
Degree Days since Biofix:1223
Management Action 1 Week Ago:none
Present Management Action:July 17 to July 18 - Continue servicing traps. Adult emergence of the 2nd generation of flies is peaking at this time.
Management Action for the Next 3 Weeks:July 29 - Continue to keep fruit protected with insecticides if spotted wing has been confirmed on your fruit farm.
Peak egg-laying by 2nd generation flies is now occurring.August 10 to August 11 - Continue servicing traps. Adult emergence of the 3rd generation of flies is peaking at this time.
Peak egg-laying by 2nd generation flies is now occurring.August 10 to August 11 - Continue servicing traps. Adult emergence of the 3rd generation of flies is peaking at this time.
For a current Spotted Wing Drosophila summary click here.
Walnut Husk Fly
Biofix: January 1, 2025
Degree Days since Biofix:2130
Management Action 1 Week Ago:July 7 to July 8 - First adult emergence. If using spinosad or GF-120, start applications now and continue until harvest (apricot, peach) or until one month before harvest (walnut).
Present Management Action:July 18 to July 19 - Mature females. If using conventional insecticides, start applications now and continue until harvest (apricot, peach) or until one month before harvest (walnut).
Management Action for the Next 3 Weeks:July 27 - Females have begun egg-laying. They insert eggs inside the host nut or fruit.August 3 - Egg hatch begins inside host nut or fruit.August 4 - 10% of adults have emerged.
For a current Walnut Husk Fly summary click here.
Western Cherry Fruit Fly
Biofix: Not established yet for 2025
Degree Days since March:2130
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.