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Issues of the week: July 7, 2010 — Spraying to prevent sclerotinia stem rot has begun, and flowering fields will move quickly through the spray window. Fields at 20% flower……
2010 - Issue 11
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Peace (B.C. and Alberta): High Prairie and north had an inch or more of rain in the past week and canola looks good. The rest of the Peace was hit……
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Top dressing nitrogen after 30% flowering provides very little if any economic benefit. But sulphur topdress may provide a benefit at this stage for deficient crops. Click here for more on……
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The decision to spray petals to prevent sclerotinia stem rot depends on 3 key questions: 1) Have conditions been moist over the past few weeks for apothecia development and survival?……
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Fungicide to protect the crop from sclerotinia stem rot infection must be applied to petals before infected petals start to drop into the canopy. Petal drop starts after 30% flower,……
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If crop staging is widely variable and if fungicide is needed to prevent sclerotinia stem rot, a split application may be worthwhile. The first application can be made when the……
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If a field has cabbage seedpod weevil and diamondback moth feeding, should economic spray thresholds be reduced to account for the combined pressure? In the case of these two species,……
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As bins are prepared for the coming harvest, keep in mind that using malathion on canola seed or in canola storage bins will result in detectable levels of malathion residue……
