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Yields have been lower than expected for many of the first harvested fields. The swath looked like a 35 bushel crop, but it yielded 25, for example. Heat during flowering and lack of rainfall may explain a large percentage of the unexpected loss. Disease and insect damage are also factors — large factors for some fields. Growers may have to delay…
Canola Watch Posts
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Growers and agronomists may be able to find clues to explain lower yields by looking at the plants, pods and seeds. Did the pods form? Did pods fill properly? Are seeds there but small or shriveled? Read more to see what these may mean, and what can be done to reduce these losses next year… -
Pre-harvest is a good time to scout for disease severity. The photo above shows severe sclerotinia infection. This article includes sclerotinia and various other diseases to look for… -
When doing their own disease surveys, growers may find it easier to check crops while swathing. Stop at five random spots in the field while swathing and check 20 standing plants at each spot. This will give you a good idea how much of the field actually had sclerotinia or blackleg or clubroot, for example… -
Many canola crops are maturing earlier than expected this year, in many cases due to hot weather. This has put some growers in a bind. They had sprayed insecticide expecting to be outside the pre-harvest interval (PHI) required between application and the planned cutting date, but now as the crop approaches swathing timing they realize that not enough time has… -
Even if canola is very dry, storage experts still recommend that hot canola be put on aeration for cooling. There will still be convection currents and some moisture movement within the bin, which can concentrate moisture at the bottom of the central core — creating a possible start point for heating… -
Thin crops and high winds can lead to heavy shattering losses if swaths start to roll. Here are tips to reduce potential losses from swaths blowing: —Swath parallel to the typical prevailing winds in the area. —Cut the plants as high as possible, just below the lowest pod. —Using a properly adjusted swath roller, push down the swath so that… -
Growers who are using Lorsban or the generics Citadel, Pyrinex and Nufos to control insects are advised to observe the pre-harvest Interval (PHI) for this product. The PHI for this product is a minimum of 21 days before direct combining or 21 days before swathing. Our canola industry relies on exports and countries that we export to have strict regulations…
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Canola yield tends to be higher when swathing occurs at 50-60% seed colour change on the main stem — or later if significant shattering can be avoided — so growers……