Miles City MT - KMLS
Data is up through May 31, 2025
Growing Degree Days since January 1:
Apple Maggot
Biofix: January 1, 2025
Degree Days since Biofix:791
Management Action 1 Week Ago:none
Present Management Action:none
Management Action for the Next 3 Weeks:June 19 to June 23 - Set out sticky traps
For a current Apple Maggot summary click here.
Billbugs
Biofix: January 13, 2025
Degree Days since Biofix:1243
Management Action 1 Week Ago:none
Present Management Action:June 7 - 50% of billbug adults are active. If making a curative treatment(for example, neonicotinoid or pyrethroid), apply now.
Management Action for the Next 3 Weeks:June 7 - 50% of billbug adults are active. If making a curative treatment(for example, neonicotinoid or pyrethroid), apply now.
For a current Billbugs summary click here.
Cereal Leaf Beetle
Biofix: May 6, 2025
Degree Days since Biofix:401
Management Action 1 Week Ago:May 27 - Overall field populations of CLB now include approximately 50% eggs and 50% larvae. <br><br>Now is an excellent time to sample to determine whether there will be need for control (see CLB Utah Pests Fact Sheet). <br><br>If control needed, it is best if possible to apply between 400 and 450 DD rather than earlier (to minimize harm to biological control of CLB by parasitic wasps).
Present Management Action:June 1 - If needed, apply control (see CLB Utah Pests Fact Sheet)June 4 to June 6 - Peak CLB larval numbers occur on small grain foliage (and egg-laying is essentially finished).
If sufficient numbers of CLB to merit control have not yet occurred in a given field (see CLB Utah Pests Fact Sheet), they are very unlikely to do so this growing season.
Not applying insecticide at this time will maximize future benefit from biological control.
If sufficient numbers of CLB to merit control have not yet occurred in a given field (see CLB Utah Pests Fact Sheet), they are very unlikely to do so this growing season.
Not applying insecticide at this time will maximize future benefit from biological control.
Management Action for the Next 3 Weeks:none
For a current Cereal Leaf Beetle summary click here.
Codling Moth - Trap Biofix
Biofix: May 3, 2025
Degree Days since Biofix:303
Moth Flight: 59.6% of moths in 1st generation have emerged
Egg Hatch: 6.5% of moths in 1st generation have hatched.
Management Action 1 Week Ago:May 23 - Optional management strategy for First Generation.
Apply horticultural oil to smother eggs that have been laid up to this point. Good coverage is essential.
The next spray will not be applied until the date that corresponds to 350 degree days.May 25 - Egg hatch for first generation begins.
Apply the first insecticide application (Delegate, Altacor, Assail, Belt, Intrepid, etc.) and continue every 14-21 days until the end of first generation egg hatch, which corresponds to the date at 920 degree days (typically 2-3 additional sprays depending on temperatures).
Apply horticultural oil to smother eggs that have been laid up to this point. Good coverage is essential.
The next spray will not be applied until the date that corresponds to 350 degree days.May 25 - Egg hatch for first generation begins.
Apply the first insecticide application (Delegate, Altacor, Assail, Belt, Intrepid, etc.) and continue every 14-21 days until the end of first generation egg hatch, which corresponds to the date at 920 degree days (typically 2-3 additional sprays depending on temperatures).
Present Management Action:June 3 - First Generation, start of peak egg hatch.
Make sure fruit is protected at least through the peak period, which ends at 640 degree days.June 4 - Optional management strategy for First Generation.
This action only applies if you used horticultural oil at the date corresponding to 200 degree days.
Apply first cover spray (Altacor, Delegate, Belt, Assail, Intrepid, etc.). Repeat applications every 14-21 days until end of egg hatch, which is the date corresponding to 920 degree days (typically 1 additional spray).
Make sure fruit is protected at least through the peak period, which ends at 640 degree days.June 4 - Optional management strategy for First Generation.
This action only applies if you used horticultural oil at the date corresponding to 200 degree days.
Apply first cover spray (Altacor, Delegate, Belt, Assail, Intrepid, etc.). Repeat applications every 14-21 days until end of egg hatch, which is the date corresponding to 920 degree days (typically 1 additional spray).
Management Action for the Next 3 Weeks:June 22 - First Generation, end of peak egg hatch.
Egg hatch is waning for the first generation, and will be completely over by 925 degree days.
Egg hatch is waning for the first generation, and will be completely over by 925 degree days.
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: 849
Blight potential for today and next two days:
For a current Fire Blight summary click here.
4-day Risk Value: 849
Blight potential for today and next two days:
| Condition | Today | Tomorrow | Next Day |
|---|---|---|---|
| If blight was in your orchard last year | EXCEPTIONAL | EXCEPTIONAL | EXCEPTIONAL |
| If blight was only nearby last year | EXCEPTIONAL | EXCEPTIONAL | EXCEPTIONAL |
| If no blight last year | EXTREME | EXTREME | EXTREME |
Greater Peachtree Borer
Biofix: January 1, 2025
Degree Days since Biofix:473
Management Action 1 Week Ago:May 28 to May 29 - Hang pheromone trap to monitor for first flight of this clearwing moth.
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 2025
Degree Days since March:802
Management Action 1 Week Ago:May 23 to May 26 - Hang pheromone trap in orchard.
Present Management Action:none
Management Action for the Next 3 Weeks:June 11 to June 18 - First moths of the summer generation are expected.
For a current Obliquebanded Leafroller summary click here.
Peach Twig Borer
Biofix: May 27, 2025
Degree Days since Biofix:64
Moth Flight: 4.6% of moths in 1st generation have emerged
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:June 16 to June 19 - 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
For a current Peach Twig Borer summary click here.
San Jose Scale
Biofix: May 3, 2025
Degree Days since Biofix:279
Males: Adult Males is over for the season
Crawlers: Crawlers is over for the season
Management Action 1 Week Ago:none
Present Management Action:none
Management Action for the Next 3 Weeks:June 9 to June 13 - First generation crawlers are most active now. Spray once, using Esteem or 1% horticultural oil.
For a current San Jose Scale summary click here.
Spotted Wing Drosophila
Biofix: January 1, 2025
Degree Days since Biofix:493
Management Action 1 Week Ago:none
Present Management Action:June 1 - Hang monitoring traps. Adult flies of the 1st generation begin emerging.
In addition, egg-laying on wild or early fruits by overwintering females is at its peak.June 5 - If SWD has been confirmed on your fruit farm, now is the time to begin protecting fruits with insecticides because the 1st generation females have begun egg-laying.
In addition, egg-laying on wild or early fruits by overwintering females is at its peak.June 5 - If SWD has been confirmed on your fruit farm, now is the time to begin protecting fruits with insecticides because the 1st generation females have begun egg-laying.
Management Action for the Next 3 Weeks:June 17 to June 18 - Continue servicing traps. Adult emergence of the 1st 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:985
Management Action 1 Week Ago:none
Present Management Action:none
Management Action for the Next 3 Weeks:June 26 - Hang yellow sticky traps.
For a current Walnut Husk Fly summary click here.
Western Cherry Fruit Fly
Biofix: Not established yet for 2025
Degree Days since March:985
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.