Diseases – Manitoba Pulse & Soybean Growers

Soybeans

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January 31, 2025

Phytophthora Root Rot in Soybeans

Phytophthora root rot (PRR) is a soil-borne root and stem disease of soybeans caused by Phytophthora sojae. Unlike other root rot pathogens, P. sojae may infect soybeans at any growth […]

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Peas

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January 31, 2025

Aphanomyces Root Rot in Peas

Download as a PDF or read the content below. Aphanomyces root rot, caused by Aphanomyces euteiches, is the most destructive pea disease in Western Canada. Aphanomyces is an oomycete pathogen, […]

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Dry Beans, Peas, Soybeans

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December 2, 2022

2022 Disease Prevalence and Management Tools

2022 Update on Disease Surveillance in Soybeans, Peas and Dry Beans and On-Farm Fungicide Evaluation Results

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Peas

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May 30, 2022

Field Pea Insect and Disease Identification Guide

New! A visual guide to field pea insect and disease pests in Manitoba.

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Soybeans

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March 28, 2022

Declining Sources of Resistance to Phytophthora Root Rot in Soybeans and How to Manage It

SINCE the mid-1950s, many soybean growers across Canada have struggled with Phytophthora root rot (PRR), caused by the oomycete Phytophthora sojae. Once the disease is present in their fields, farmers must deal with it for a long time as surviving spores will persist in the soil for approximately 10 years.

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Dry Beans

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June 9, 2021

Fine-Tuning Management of Dry Bean Diseases

Jonathan Reich and Dr. Syama Chatterton, Lethbridge Research and Development Centre, Agriculture and Agri-Food Canada – Summer (June) 2021 Pulse Beat PREDICTING WHITE MOULD OUTBREAKS IN DRY BEAN FIELDS Disease […]

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Dry Beans, Peas, Soybeans

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June 8, 2021

2020 Foliar Disease Survey and On-Farm Fungicide Trial Results

Each year, a representative sample of soybean, field pea and dry bean fields are surveyed for root, foliar and stem diseases across Manitoba. Here are the results from the 2020 foliar and stem disease surveys and foliar fungicide results from the On-Farm Network.

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Peas

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March 30, 2021

Fungicide Decision Worksheet for Managing Mycosphaerella Blight in Field Peas

New! Use this decision worksheet while scouting to determine if your pea field needs foliar fungicide.

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Dry Beans, Peas, Soybeans

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March 15, 2021

2020 Update on the Status of Root Rots in Soybeans, Dry Beans and Peas

In 2020, 63 soybean fields, 40 dry bean fields and 46 pea fields were surveyed in Manitoba for root diseases.

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Faba Beans

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March 15, 2021

Faba Bean Insect and Disease Scouting Calendar

This calendar indicates when to scout for faba bean insect and disease pests, along with their potential impact on production.

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Peas

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December 3, 2020

Aphanomyces Root Rot

Dr. Syama Chatterton, Plant Pathologist, Lethbridge Research Centre, Agriculture and Agri-Food Canada – Fall/Winter (December) Pulse Beat 2020 Aphanomyces root rot is historically the most destructive disease of peas. Although […]

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Soybeans

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July 22, 2020

Phytophthora Root Rot

About Phytophthora Phytophthora root rot (PRR), caused by Phytophthora sojae, is a root and stem disease specific to soybeans. Unlike other root rot pathogens, PRR can infect soybeans at any […]

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