Field Pea Insect and Disease Identification Guide

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This visual guide to field pea insect and disease pest identification in Manitoba was created to supplement the scouting calendar. Refer to this ID resource guide for identification of common field pea pests, while scouting during the growing season.

Mycosphaerella Blight

Mycosphaerella blight lesions on pea leaves at R6 near Roblin on July 31.
Mycosphaerella blight in the lower canopy of a pea crop, not likely severe enough to warrant a second fungicide application.
Mycosphaerella blight early symptoms showing up on lower leaves on June 28, 2020.

Bacterial Blight

Bacterial blight in peas shows up as angular, water-soaked lesions.
Bacterial blight in peas shows up as angular, water-soaked lesions.
Bacterial blight in peas shows up as angular, water-soaked lesions.

Downy Mildew

Pea Leaf Weevil

Pea Aphids

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