Codling Moth_statewide (Horticulture/Urban IPM)
Description:

Commonly referred to as “the worm in my apple,” codling moths are the primary insect pest of apple and pear in Montana. The adult codling moth typically emerges during apple bloom across the state, which can help growers and homeowners time chemical controls.

There are several options for managing codling moth in backyard plantings. Chemical controls are applied after petal fall and should never be applied during bloom when risk to harming pollinators is high.

See the link to this printable fact sheet for more information (ADA Compliant):

https://ipm.montana.edu/documents/entomology/ent-fact-sheets-2020-2021/2021_insect_fact_sheet_codling_moth_final.pdf


Alert Period: 05/04/2021 - 07/31/2021
Submitted By: Lauren Kerzicnik
Winter Injury / Evergreen Desiccation (Horticulture/Urban IPM)
Description:

With the warm and dry winter weather we have had over the past few months, the Schutter Diagnostic Lab has been receiving several samples of evergreen trees and shrubs with symptoms of winter injury. Winter kill or desiccation occurs when the amount of water lost by the foliage exceeds the amount picked up by the roots. Symptoms appear as browning/yellowing needles, sometimes affecting entire branches. 

See the attached fact sheet for more information.


Alert Period: 04/01/2021 - 05/31/2021
Submitted By: Abiya Saeed
Alert Documents:
It's Tick Season_Statewide_revised (Horticulture/Urban IPM)
Description:

It’s tick season and time to look out for ticks. The Forest Service also released a report about an increase in Colorado tick fever cases (vectored by the Rocky Mountain wood tick) last summer (2020) in the Lolo, Bitterroot, Beaverhead-Deerlodge, and Salmon-Challis National Forests.

See the attached fact sheets for more information on ticks in Montana and the report from the Forest Service.

(revised to include Forest Service report)


Alert Period: 04/07/2021 - 09/30/2021
Submitted By: Lauren Kerzicnik
Alert Documents:
Brown Marmorated Stink Bug_1st Report in Montana (Billings)-January 26 (Horticulture/Urban IPM)
Description:

The invasive brown marmorated stink bug, Halyomorpha halys, was confirmed for the first time in Montana on January 26, 2021 (from inside a home in Billings). We currently don’t know if it is established in Montana and what impact it might have on our crops and specialty crops across the state. Its detection in other states poses problems ranging from a nuisance to a severe agricultural pest. See the alert for further information.


Alert Period: 01/27/2021 - 05/31/2021
Submitted By: Lauren Kerzicnik
Alert Documents: