Crop: Soybean

  • Herbicide Resistance in Manitoba

    Tammy Jones, Industry Development Specialist – Weeds, Manitoba Agriculture PALMER AMARANTH, TALL waterhemp, Canada fleabane… the scientific community continues to document the development of herbicide-resistant weeds with confirmation of resistance to new modes of action or multiple mechanisms within one weed. … Continue reading →

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  • Resistance to Phytophthora Root and Stem Rot in Soybean

    Race-specific resistance (Rps geners) and partial resistance (field tolerance, quantitative resistance) to Phytophthora. Continue reading →

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  • Soybean Pod Height: Influence of Genetics, Environment and Management

    What influences soybean pod height and what we can do about it? In this Bean Report, we explore the impact of genetics, environment and management (G x E x M). Continue reading →

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    Scouting for Early Season Insects

    There are generally few early season insects we need to worry about in pulse and soybean crops grown in Manitoba. These include wireworms, seedcorn maggot and cutworms. Of these insects, insecticide seed treatment will provide potential control of only wireworms … Continue reading →

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  • Soybean Rolling

    Land rolling is one method that can improve harvestability of soybean crops. Rolling evens the soil surface by pushing rocks, soil clods and crop residue into the soil surface. As soybeans are harvested low to the ground due to low … Continue reading →

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    Scouting for Early Season Diseases

    Seedling Disease/Root Rot The terms “seedling disease” and “root rot” generally refer to the root rot complex that can infect pulse and soybean crops. Diseases that make up the root rot complex differ slightly among these crops. Fusarium spp., Pythium … Continue reading →

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  • Soybean Foliar Diseases

    Tips on identification and management of foliar diseases in pulse and soybean crops. Continue reading →

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    Weed Seedling Identification

    Biennial Wormwood Making its first appearance in the top 20 most abundant weeds list, according to Manitoba’s 2016 survey, biennial wormwood is up from 49th place in 2002. In 2016, it was ranked as the 9th most abundant weed in … Continue reading →

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  • Early Soybean Seeding

    Optimal Window Deciding when to plant is a balance of the right calendar date, soil conditions, weather forecast and personal tolerance to risk. According to MASC records and local small plot research, soybeans planted in early May yield higher than … Continue reading →

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  • Preliminary Summary of Soybean Yield Loss from Hail at V2 to V3 in Manitoba

    Soybean yield loss due to hail depends on the growth stage, type of damage and severity. Currently, we rely on soybean recovery data from the U.S. as there is no data available for Western Canada. However, research is underway to … Continue reading →

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  • Assessing Soybean Nodulation

    Timing Assess soybean root nodules each year, regardless of the field history or inoculant strategy. The ideal time to assess nodulation is at the R1 (beginning bloom) stage. Root nodule assessment at this stage gives a clear picture of whether … Continue reading →

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  • Iron Deficiency Chlorosis

    Identification Iron deficiency chlorosis (IDC) is most commonly observed in soybean crops, but dry beans, faba beans and field peas can also be sensitive to IDC. Symptoms of IDC include interveinal yellowing (chlorosis) of new growth, where leaf veins remain … Continue reading →

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  • Rescue Nitrogen Fertilizer for Poorly-Nodulated Soybeans

    Nodulation failure and nitrogen (N) deficiency has appeared in soybeans across Manitoba, particularly on fields without a history of soybean, in high residue production systems and on acidic soils (pH <6.0). A possible explanation for poorer than usual nodulation and/or … Continue reading →

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  • Soybean Stem Diseases

    Stem and root diseases can have a greater impact on soybean yield and quality than foliar diseases. Stem disease symptoms typically arrive later in the growing season during mid- to late- reproductive stages, which can directly impact pod and seed … Continue reading →

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  • Soybean Cyst Nematode

    The presence of Soybean Cyst Nematode has been confirmed in Manitoba. Preventative action, early detection and timely management are key in avoiding significant yield loss from SCN. Continue reading →

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  • Two-Spotted Spider Mites

    Two-spotted spider mites (Tetranychus urticae) can be a sporadic pest of soybeans and dry beans in Manitoba. They prefer hot, dry weather and may appear from July to August, if conditions are favourable. Infestations usually begin at field edges and … Continue reading →

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  • Late Season Hail Damage to Soybeans

    From 2015 to 2018, research was conducted on the effects of hail damage on soybean maturity, yield and quality at Portage la Prairie and Minto, Manitoba for a total of five site-years. Three of the five site-years were ironically lost … Continue reading →

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  • Residue Management for Moisture Conservation

    We may be entering a new dry cycle, meaning we need to revisit strategies to conserve soil moisture. Continue reading →

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