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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 stage. P. sojae is an oomycete pathogen, also called a water mould, that may remain dormant in the soil for several years. Infection of plants…
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Alternatives to Lambda-Cyhalothrin for 2023
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2022 Disease Prevalence and Management Tools
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2022 Soybean Variety Guide Highlighter Tool
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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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Assessing Grasshopper Damage
Pest Species in Manitoba There are 85 grasshopper species in Manitoba, but only four have the potential to become crop pests, including the migratory, twostriped, clearwinged and packard grasshoppers. These species are not to be confused with katydids and leafhoppers, which are also commonly found in Manitoba. And not all of these pest species feed…
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Winter Rye Preceding Dry Beans and Soybeans
Overview of North Dakota research Greg Endres, NDSU Extension Cropping Systems Specialist, Carrington Research Extension Center, ND – Summer (June) 2021 Pulse Beat FARMER INTEREST WITH cover crops in North Dakota is high and utilization is increasing. North Dakota State University has been conducting research to help support cover crop adaptation and use. Winter rye is…
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Insecticide Resistance in Soybean Aphids
John Gavloski, Entomologist, Manitoba Agriculture and Resource Development – Summer (June) 2021 Pulse Beat WITH ANY INSECT, pathogen or weed, repeated exposures to the same chemical will eventually lead to some individuals developing resistance to the chemical. Over time these can become the dominant portion of the population, reducing the effectiveness of the chemical. Resistance can…
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Late-Season Weed Scouting. So Many Questions.
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2020 Foliar Disease Survey and On-Farm Fungicide Trial Results
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Considerations for Dry Seeding Conditions
April 14, 2021 Manitoba is currently facing an early, dry spring. Seedbed preparation and planting have already begun for a few farmers, and others are, or at least were, close to hitting the fields. This week’s snowfall has brought some much needed moisture. However, actual precipitation amounts have been variable across the province, ranging from…
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2020 Update on the Status of Root Rots in Soybeans, Dry Beans and Peas
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Managing Kochia in Pulses and Soybeans
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Managing Herbicide-Resistant Weeds
This past July 2020, MPSG hosted a webinar featuring Dr. Charles Geddes, Research Scientist at Agriculture and Agri-Food Canada in Lethbridge. This webinar covered Dr. Geddes’ Manitoba-based research on volunteer canola management in soybeans and updates from his current research on how to mitigate and manage herbicide-resistant weeds in western Canada. If you missed the…
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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 development stage. It is an oomycete pathogen, also called a water mould, that can remain dormant in the soil for at least four years. Infection…
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WEBINAR: Managing Herbicide-Resistant Weeds in Soybeans
This webinar provides a recap of Manitoba-based research on volunteer canola management in soybeans and the latest updates on how to mitigate and manage herbicide-resistant weeds in Western Canada. Dr. Charles Geddes is a Research Scientist at Agriculture and Agri-Food Canada in Lethbridge, Alberta. He leads the Weed Ecology and Cropping Systems research program, which…
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Late Soybean Seeding
Optimal vs. Late Soybean Seeding We now have extensive research results on soybean planting dates in Manitoba, including information on the impact of late soybean seeding. Different studies at the University of Manitoba led by Kristen P. MacMillan (Soybean and Pulse Agronomy Lab) and Dr. Yvonne Lawley (Farming Systems Lab) have determined that planting at…
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Soybean Reseeding
Determine the Initial Plant Stand Before you make any replanting decisions, the first step is to assess the existing plant stand (live plants/ac). Use the hula hoop method for narrow rows (<15″) and the row length method for wide rows (>15″). The MPSG Bean App ( available in the App Store) helps you easily assess…
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