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OSR volunteers


As reported earlier the first crops of Oil seed rape have been cut.

We have received a drop of rain and the seed on the floor has now chitted as can be seen in these photos.

So what is the best management for ex-OSR fields? The answer of course is “it depends” but there are a few salient points to bear in mind.

Oilseed rape volunteers can be a problem throughout any rotation but particularly where farmers are aiming to grow Vistive or HEAR industrial varieties of rape where volunteers of the wrong type can contaminate future crops. It is also a fact that where Oilseed rape has been grown in the rotation for 20+ years their numbers pose a “threat” to the next commercial crop of rape, what ever its end market. A series of trials and demo’s by a major chemical manufacturer highlights this point in the final photo in the series.

Oilseed rape seeds are therefore best left on the surface to either rot or grow, rather than being incorporated immediately after combining. If the seed is buried dry it is more likely to go dormant and be a worse problem in subsequent years. .


#oilseedrape #management #vistive #HEAR

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