Should I grow OSR this year?

Farms across the country have had a tough time over the last few years growing OSR. Many growers have cut back, and several have removed OSR from their rotation altogether. However, figures from Defra are showing that the area of OSR grown has increased in the Southeast of England. So, do the farms of the south know something the rest of the country does not?

The Southern part of the UK was decimated in 2019 with the OSR crop having the weather and the dreaded Cabbage Stem Flea Beetle (CSFB) against it. Many growers took the hit and swore they would never grow OSR again. However, many have kept going and have learnt to live with this pest.

Growing the correct variety; OSR is a high input crop so choosing a high yielding variety that can offer maximum return is key. LG Armada is the highest yielding OSR variety on the AHDB recommended list. Along with high yield, LG Armada also has pod shatter resistance, Turnip yellows virus resistance along with good resistance to light leaf spot and stem canker. Vigour varies between varieties, some have better Autumn vigour and some better Spring vigour, speak to your local seed specialist to find out which variety will suit you best.

Drilling timing and soil moisture; this is key to a fast establishment farmers that drill into moist seedbeds with rain in the forecast have more of a chance to beat adult CSFB damage, there is no doubt that we go into danger zone when the OSR emerges and then runs out of moisture. We need to be looking at the forecast rather than the calendar.

Companion and trap crops; There has been some anecdotal evidence of success with companion crops, especially when these companion crops are established before the OSR is drilled, the payments that can be claimed through the new Single Farm Incentive makes this even more attracting. OSR volunteers can also act as a trap crop and divert CSFB away from adjacent cash crops. When trap crops are destroyed, CSFB eggs or larvae die. In trials, the approach reduced adult CSFB infestation (by up to 88%) and damage (by up to 76%) in the oilseed rape cash crop. However, benefits were variable and not always observed.

OSR prices rising? Well, there are two things you can never really predict in farming, one being the weather and the second being markets. Prices have come back a long way since the immediate aftermath of Russia’s invasion of Ukraine but are starting to climb again at the time of writing in late May. There are also other reasons for optimism, the EU is set to ban unsustainable palm oil imports this year and this could lead to producers switching to rape seed oil instead, a cut in Canada’s canola production estimate for 2024/25 due to spring acreage shifts to wheat on the back of poor growing conditions has also been supporting prices more recently.

So, there is much reason to be optimistic for a crop that we know works well in cropping rotations, spreads the harvest workload, and has, and can still return a healthy gross margin.