Home / Canola Watch / Page 48
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After a heavy rain, canola in higher ground might be in good shape. Canola on the edge of standing water may be experiencing some stress due to reduced root function,……
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Seeing about ground symptoms? Root maggots are one possible cause. Their damage can also increase root disease infections…
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Hot days (28-30°C and up) coupled with warm nights (16°C and up) from bud to mid-flowering stages can have a substantial effect on canola yield.Cool nights offer some recovery from hot days. Warm nights do not provide a recovery period, and more flowers are aborted, producing blanks along the stem…
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Always follow labels for rate, timing and pre-harvest intervals (PHI) when applying herbicides. Applications made after the label window can lead to reduced weed control due to advanced weed staging and reduced herbicide contact with the weeds through the increased canola canopy closure…
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The challenge is that one symptom can have many causes, so keep an open mind. Don’t have a pre-conceived notion of what the problem is. If you get a second opinion – which is a great idea – try not to convince that person what you think the problem is before that person has a chance to assess the facts…
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These three questions will help canola farmers and agronomists assess the sclerotinia stem rot risk in their areas…
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The decision to apply a fungicide to prevent sclerotinia stem rot may be generalized by answering these four questions: (1) Have environmental conditions prior to flowering been wet enough for apothecia development and survival? (2) Is the canola crop canopy dense and is yield potential high? (3) Does the weather forecast predict precipitation and/or humidity during the flowering period? (4)…
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Once petals drop and start to decay, infection proceeds very quickly with lesions being visible in as little as 24 hours…
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Timing and coverage are keys. For most fungicides, the recommended window for application falls between 20 and 50 per cent bloom, with optimum timing typically around 30 per cent bloom…