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Harvest challenge for summer OSR

Agronomy Issues
28.05.2019
Harvesting OSR
Uneven maturity of OSR crops at harvest, as a result of the effects of CSFB, could add a further challenge to growers this summer

A further challenge from CSFB effects is likely to come at harvest, with achieving a consistent maturity. Particularly if affected branches start to die off earlier than main stems, or individual plants die back earlier than others.

Timing of desiccation could prove more problematic, to ensure less affected plants can reach seed fill potential, without excessive losses from earlier senescing branches and plants.

That’s compounded by the relatively slow effect of glyphosate, but growers have just one final harvest of faster acting Reglone (diquat) before it is withdrawn, pointed out Georgina Wood.

iOSR growers are actively considering the use of podstick type products, to extend the window of harvest opportunity, depending on how the crops appear as harvest nears.

Whilst all of the iOSR growers have now trialled allowing the crop to naturally senesce for harvest, the vast majority believe desiccation is an essential tool for most of the crop. The balance is leaving green leaf area for as long as possible – which YEN reports show is a key factor in high yields – yet still be able to physically combine the crop. 

Harvesting OSR

iOSR growers' consensus was that some fields with high plant populations and thinner stems may be left to senesce, but lower plant populations with thick stemmed, well branched crops will almost inevitably need to be desiccated.     

Read more from the latest iOSR group:

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