Columbus MT - C9321
Data is up through August 8, 2026
Growing Degree Days since January 1:
Apple Maggot
Biofix: January 1, 2026
Degree Days since Biofix:2890
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:3883
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, 2026
Degree Days since Biofix:2185
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: April 21, 2026
Degree Days since Biofix:1730
Moth Flight: 93.5% of moths in 2nd generation have emerged
Egg Hatch: 72.5% of moths in 2nd generation have hatched.
Management Action 1 Week Ago:August 5 to August 7 - 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:August 8 - 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.
Management Action for the Next 3 Weeks:August 30 to August 31 - Second Generation end of egg hatch.
Your last spray should protect fruit up until this date.
Your last spray should protect fruit up until this date.
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, 2026
Degree Days since Biofix:1610
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 9, 2026
Degree Days since Biofix:1102
Management Action 1 Week Ago:none
Present Management Action:August 8 to August 9 - Second generation moth flight begins.August 13 to August 14 - Most larvae of the first generation are mature.
Management Action for the Next 3 Weeks:August 22 - Larval feeding of the first generation ends (most are now in the pupal stage).August 30 to August 31 - Second generation egg hatch begins; apply treatment now if necessary.
For a current Obliquebanded Leafroller summary click here.
Peach Twig Borer
Biofix: May 24, 2026
Degree Days since Biofix:1520
Moth Flight: 97% of moths in 2nd generation have emerged
Egg Hatch: 65% of moths in 2nd generation have hatched.
Management Action 1 Week Ago:none
Present Management Action:none
Management Action for the Next 3 Weeks:August 30 - End sprays for second summer generation. (Egg hatch ends)
For a current Peach Twig Borer summary click here.
San Jose Scale
Biofix: April 21, 2026
Degree Days since Biofix:1670
Males: -1% of adult males in 2nd generation have emerged.
Crawlers: -1% of crawlers in 2nd generation have emerged.
Management Action 1 Week Ago:August 2 to August 7 - 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, 2026
Degree Days since Biofix:2004
Management Action 1 Week Ago:August 6 to August 7 - 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.
Present Management Action:none
Management Action for the Next 3 Weeks:August 20 to August 21 - Continue servicing traps. Adult emergence of the 4th generation of flies is peaking at this time.
For a current Spotted Wing Drosophila summary click here.
Walnut Husk Fly
Biofix: January 1, 2026
Degree Days since Biofix:3353
Management Action 1 Week Ago:August 1 - 50% of adults have emerged.
Present Management Action:August 10 - 90% of adults have emerged.August 12 - Larvae begin exiting the host fruits or nuts to drop to the ground to pupate.
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:3353
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.