Arable growers should not rule out sowing oilseed rape (OSR) into September, with trials showing later drilling can deliver strong establishment and yield benefits if the right variety and preparations are in place, says DSV UK.
“Farmers are understandably wary after this last season, but in comparison to a lot of crops, OSR has had a very successful year,” says Sarah Hawthorne, DSV UK.
“Too many farmers are nervous about drilling oilseed rape past August, but DSV trials across multiple sites in Europe have shown yield increases of between 0.5 - 0.8t/ha where OSR was drilled into September compared to earlier sowings.
“We’ve also seen reports of a record breaking OSR crop in Lincolnshire this season. At 7.52t/ha, the grower has credited part of his success to drilling a hybrid variety well into September.
Mrs Hawthrone reiterates that drilling date alone doesn’t dictate success. Variety choice, seedbed preparation, and plant population can make or break your crop.
When it comes to variety choice she says DSV trials and grower experiences show that, with modern hybrids such as Dompteur, Cognac and Commodore, drilled well into September can not only establish strongly but also go on to yield exceptionally well.
“Oilseed rape grows from its roots, not its leaves, and the development of a strong tap root in the first 30 days is critical to the crop’s potential,” explains Mrs Hawthorne.
“If you get the first 30 days right, these hybrids will effectively ‘switch off’ through winter, avoiding over-forward crops, and then restart in spring with real drive. It’s about resilience, not just speed.”
Mrs Hawthorne says DSV trials and grower experiences show that, with modern hybrids such as Dompteur, Cognac and Commodore, drilled well into September can not only establish strongly but also go on to yield exceptionally well.
“Hybrid varieties can also deliver rapid ground cover with a compact growth habit which helps plants withstand slug attack.”
While variety choice is central, she stresses that attention to soil and seedbed management is equally important.
Later drilling requires free-draining soils and cultivations that promote deep rooting, with compaction and waterlogging posing the biggest risks to success.
“DSV rhizotron studies show 50-60% more root mass is present where soils are open and well-structured.
“Direct drilling is fine, but make sure pans are broken and trash levels are manageable,” she says.
Finally, plant populations should be kept moderate. “Aim for 25-35 plants per square metre, that’s where we see the best yields.
“ADAS trials have shown that later drilled crops at this density perform better than high-density stands, even if they only have three or four leaves going into winter.”
ENDS DSV286 Date 9 SEPTEMBER 2025
For further information, please contact Sarah Hawthorne at DSV UK
sarah.Hawthorne@dsv-uk.com
DSV United Kingdom is a wholly owned subsidiary of Deutsche Saatveredelung AG (DSV), which operates internationally from the head office in Lippstadt, Germany. It is one of Europe’s leading plant breeding companies, having been founded in 1923. The company has 800 shareholders, of which more than 60 per cent are farmers and 13 per cent are members of staff.
DSV develops and distributes oilseed rape seed, wheat, barley, maize, a range of forage and amenity grasses, clover and various catch crops. In addition to the head office in Lippstadt, DSV has four seed breeding stations and a trialling station in Germany, many breeding, selection and testing locations in other European countries and a universal advisory network with its own branches, processing facilities, seed stores and distribution centres. www.dsv-uk.co.uk