What is this worm and will it eat canola?
We heard two reports this week of sulphur deficiency symptoms. One situation was the result of other early-season pressures – delayed emergence and flea beetles – and was solved as the plants grew bigger.
The decision-making process on whether to spray for sclerotinia stem rot in canola begins about three weeks before flowering. The situation leading up to that point is almost irrelevant, given the canola plant’s ability to crank up yield potential in response to improved growing conditions. Sclerotinia stem rot can go from no risk to high risk with a timely period of regular rains and humidity.
The later that hail occurs in the season, the more damage it can do to yield. That said, flowering canola can, with enough time, recover from hail that knocks off a large percentage of flowers.
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