Pest Update July 20 – 24, 2020

Haying continues to happen a reminder that insect populations from hayed fields will migrate into new fields. Scouting is encouraged of any nearby fields as populations will increase.

Grasshoppers have been noted from 1st Instar – Adult stages with some areas experiencing high numbers.

Diamondback Moth larvae larva continue to be found in sweep netting, reminder that threshold is 2-3 larvae per plant when plants are in advanced podding.

Wheat Midge continues to be detected in traps. Wheat is susceptible to damage currently, reminder threshold for Wheat Midge is one insect per 4-5 heads for prevention of yield loss.  The BC Peace Weather website also has the female Wheat Midge Emergence tool to help with timely scouting.

Aphids were also noted in all crops Scouting for Sclerotinia and other diseases in Canola, Stripe Rust and Fusarium Head Blight in Wheat should be continued to be scouted for. Reminder that with the rains lately that disease presence and pressure may increase in all crop stands.

Growth Stages using the BBCH Scale were noted for the week as follows: Canola 65-76, Wheat 61-75, and Peas 39-75. Growing Degree Days (based on a May 15 seeding, Base 5°C) provided through the Peace Agri Weather Network are Farmington – 589, Cecil Lake – 579, and Buick – 571.

Field Heroes:

Canola Council of Canada:

Stripe Rust: