June 17, 2015 – Issue 14

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  • Assess the real cause of bud loss in pre-bolting canola

    Insects tend to damage only a few buds per cluster. If all are damage, something other than insects is the likely cause.

    Bud damage and insects are being found together in some canola fields, but that does not mean insects are the primary reason for the damage. Take a moment to assess the damage before making unnecessary or poorly timed insecticide applications. Key points to consider….

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  • June 17 Quiz — What is this we found?

    Quiz June 17 2

    This is a good week to be out scouting for situations that require immediate management, continued monitoring or detailed note-taking to make amends next year. Drill performance issues are a good example of the third situation. The following photos show damage observed in canola fields in the past week across the Prairies. Can you identify the cause for each?

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  • No sit Sherlock!

    Magnifying glass Gabert small

    Canola plants have been going through a lot of stress, and could be showing multiple symptoms. Good sleuthing means leaving the truck seat, putting on your booties and walking the fields. Getting to the bottom of any mystery takes keen observation (got your magnifying glass?), an open mind (the most obvious answer is not always the right answer) and a touch of skepticism (not everything can be cured with a splash of this and that).

    Here are some tools to get you geared up for problem solving:

    What you need in your scouting toolkit
    Canola Diagnostic Tool
    How to use photos for agronomy

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  • Insect update: Grasshopper, diamondback, lygus, CSPW

    Grasshoppers. If populations are significant and crop feeding has begun, a spray or bait application around field edges may be enough to reduce the threat. Grasshoppers are easier to manage when they’re small — less than the third instar. Except in cases where there are extremely high populations feeding on crop along the edges, ideal […]

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  • Get the most out of your herbicide application

    Weedy canola thistles Nicole Philp

    This article has tips and links for information on spraying in windy conditions, when to spray uneven crop, spraying at the right crop stage, sprayer clean out to prevent crop damage, and Keep It Clean tips for new products.

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  • How to identify a spray contamination issue

    This stunted growth is the result of Group 2 herbicide residue.

    Herbicide damage to canola can take many forms. Here are some clues to look for….

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  • Scout for nutrient deficiency

    This diagram from IPNI shows where deficiency symptoms are likely to show up on a plant. Nitrogen is mobile so with N shortage, plants will move N to new parts of the plant. Therefore deficiency will show up first in older leaves.

    This diagram from IPNI shows where deficiency symptoms are likely to show up on a plant. Nitrogen is mobile, so with an N shortage, plants will move N to new parts of the plant. Therefore deficiency will show up first in older leaves.

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  • Managing canola after a June hailstorm

    Hail damage. Credit: Beth Trueman

    The later hail occurs, the higher the chance of yield loss, given that the plants have less time to recover. Plants with a broken main stem will likely die. Plants at the 6-leaf stage that lose most of the leaf area on the main stem can still live, but these leaves will not regrow. The plant will be delayed, and more of the yield potential — which will be lower than before the hail — will come from side branches.

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  • Save the date: Canola Discovery Forum October 27-28

    Canola Discovery Forum tracks canola and the science behind it. Growers share their experiences and we build on that knowledge to identify research priorities and inspire collaborative efforts between academia and private sector companies. The goal is to seek strategic opportunities to facilitate risk reduction and advance the growth and profitability of the canola industry.

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