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Helena MT - E5549
Data is up through July 9, 2020
Growing Degree Days since January 1:825
Change Station:
Codling Moth
Biofix: May 30, 2020
Degree Days since Biofix:494
Moth Flight:89.4% of moths in 1st generation have emerged.
Egg Hatch:52.5% of eggs in 1st generation have hatched.
Management Action 1 Week Ago:none
Present Management Action:none
Management Action for the Next 3 Weeks:July 17 - First Generation, end of peak egg hatch. Egg hatch is waning for the first generation, and will be completely over by 925 degree days.
July 30 - First Generation end of egg hatch. Your last insecticide spray of the first generation should provide protection up to this date.
For a current Codling Moth summary click here.
Peach Twig Borer
Biofix: June 3, 2020
Degree Days since Biofix: 426
Moth Flight: 96.3% of moths in 1st generation have emerged.
Egg Hatch: 36.4% of eggs in 1st generation have hatched.
Management Action 1 Week Ago:July 1 to July 5 - Begin sprays for first 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
Present Management Action:none
Management Action for the Next 3 Weeks:July 28 - End sprays for first summer generation. (Egg hatch ends.)
For a current Peach Twig Borer summary click here.
Fire Blight
*This model only applies when trees are in bloom.
San Jose Scale
Biofix: May 30, 2020
Degree Days since Biofix: 458
Males: 0% of adult males in 1st generation have emerged.
Crawlers: 21.5% of crawlers in 1st generation have emerged.
Management Action 1 Week Ago:July 5 to July 8 - First generation crawlers are most active now. br>/br>Spray once, using Esteem or 1% horticultural oil.
Present Management Action:none
Management Action for the Next 3 Weeks:none
For a current San Jose Scale summary click here.
Western Cherry Fruit Fly
Biofix: January 1, 2020
Degree Days since January 1: 1572
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.
Greater Peachtree Borer
Biofix: January 1, 2020
Degree Days since January 1: 810
Management Action 1 Week Ago:none
Present Management Action:July 14 to July 16 - If you are not using a pheromone trap to detect first moth emergence, start your trunk sprays now (if damage is present from previous year). Only treat the lower 12-18" of trunk and exposed roots, using permethrin, carbaryl, lambda-cyhalothrin, etc.
Management Action for the Next 3 Weeks:none
For a current Greater Peachtree Borer summary click here.
Obliquebanded Leafroller
Biofix: Not established yet for 2020
Degree Days since January 1: 1291
Management Action 1 Week Ago:July 1 to July 4 - First moths of the summer generation are expected.
Present Management Action:none
Management Action for the Next 3 Weeks:none
For a current Obliquebanded Leafroller summary click here.
Apple Maggot
Biofix: January 1, 2020
Degree Days since Biofix: 1297
Management Action 1 Week Ago: July 4 to July 8 - Set out sticky traps
Present Management Action: July 9 - Set out sticky traps
July 16 - First emergence of adults. Begin sprays; continue at 5-14 day intervals until harvest
Management Action for the Next 3 Weeks: none
For a current Apple Maggot summary click here.
Cereal Leaf Beetle
Biofix: May 6, 2020
Degree Days since Biofix:982
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.