Weeds-general-other

  • Spraying weeds after frost and snow

    Weeds-general-other

    Spray decisions — when to spray or whether to spray at all — will depend on leaf condition after the snow is gone.

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  • What causes herbicide carryover damage?

    Weeds-general-other

    Factors that affect herbicide carryover are herbicide group, field history, soil characteristics, dry conditions and temperature.

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  • Tank mixes of herbicides and insecticides or fungicides

    Weeds-general-other

    Sprayer in canola Cheri Jacobsen small

    Combining pest control operations to save trips over the field may seem like good economic sense, but consider the following when making this decision:

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  • What’s the Buff? Don’t spray sensitive areas

    Weeds-general-other

    Buffer zones or strips come in all shapes and sizes, and are designed to protect sensitive areas. Sensitive areas include permanent vegetation to maintain good water quality (riparian areas around rivers, lakes and ponds), control erosion (shelterbelts) or provide wildlife habitat. These areas are also typically habitat for pollinators and other beneficial insects.

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  • Top 10 weed spraying topics

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    We dug into our vast vault of Canola Watch articles to put together this Top 10 list.

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  • Tips for spraying weeds in dusty conditions

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    Dusty conditions are common in spraying, and in dry springs they are often associated with a further challenge – drought-stressed plants. There is no magic cure for these problems, but Tom Wolf provides these guidelines….

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  • Map of the Week – Herbicide carryover risk

    Weeds-general-other

    The map shows herbicide carryover risk in Saskatchewan based on summer 2017 precipitation. In-season moisture from last season is the measure that influences herbicide breakdown.

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  • Maps: The moisture situation (with herbicide carryover theme)

    Weeds-general-other

    We haven’t lost a crop in March, but growers across large parts of Western Canada are concerned about the soil moisture situation. This may influence decisions on seed costs, fertilizer rates and, when the time comes, seeding depth. Dry conditions that started last summer can also increase the risk of herbicide carryover.

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  • Moving soil, moving clubroot: Machinery reminder

    Weeds-general-other

    Going to an auction sale this spring? Before bringing home a new machine, check that it’s clean outside and in. Soil on used drills, combines and basically any field machinery could contain clubroot spores.

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  • Late herbicide: Is it worth it?

    Weeds-general-other

    Wind and wet pushed back a lot of weed management and some fields are still not sprayed. In this situation, intense weed pressure can reduce yields by 20%, 30%, 50%… That’s why early weed control has a huge positive effect on profitability, but late control is better than nothing. Late control can stop the yield loss, stop weeds from contributing substantially to the weed seed bank, and improve crop harvestability.

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