LG Avenger CSFB resilience helps Lincs farmer return to OSR
Cabbage stem flea beetle has been a big factor behind the decline in oilseed rape area over recent years, but one Lincolnshire grower is using varietal resilience to return to the crop after a three-year break.

David Bristow, Lincolnshire

David Bristow of the 650 ha Stourton Estate on the edge of the Lincolnshire Wolds, stopped growing oilseed rape in 2022/23, after several seasons spent battling flea beetle, but decided to give it another go after hearing about the CSFB resilience characteristics of LG Avenger (see panel).

“When our seed supplier United Oilseeds told us about the resilience characteristics, it was one of the main reasons we were prepared to give oilseed rape another go,” says Mr Bristow. “But, it’s not the only reason. LG Avenger really has got the whole package; it’s a well balanced, good variety, that we’ve had no issues with growing so far.”

Rapid establishment

This season, Mr Bristow has 52 ha of LG Avenger in the ground, sown after winter barley in the last week of August. Stubbles were cultivated with a low disturbance subsoiler before drilling with the farm’s Horsch Avatar at 2.6 kg/ha, alongside a companion crop of buckwheat (5 kg/ha) and a surface dressing of 150 kg/ha of DAP fertiliser.

“We did have to wait until there was some moisture before drilling, but once it went in, the LG Avenger was up and away really quickly. The drill worked really well, with very even seed depth, which resulted in excellent establishment.

“The crop grew past the cotyledon stage so rapidly, I don’t think we saw any of the classic shot-holing last autumn, although pressure was generally fairly low.”

Larval assessments in 10 stem samples collected this spring support this, with just one larvae per stem found. “They were all very small, so I suspect they were laid fairly late in the season,” he notes.

The lack of CSFB damage comes despite no insecticides being used on the farm for the past six years, with a large area now signed up to the SFI no insecticide option (CIPM4).

Marginal gains

Mr Bristow is well aware that CSFB remains a threat to oilseed rape, so is keen to do all he can to mitigate the risks when coming back into the crop. Below are some of the steps he has taken:

 

“Individually, they’re all quite small things, but together they do all add up to make a bigger difference,” says Mr Bristow.

Added insurance

LG Avenger’s strong disease scores and pod shatter resistance provide another layer of insurance for protecting yield potential, Mr Bristow says.

“This season we’ve only applied two fungicides in the spring, and nothing last autumn, as the combination of LG Avenger’s phoma resistance and our careful disease monitoring was enough. Crops just never reached the threshold for treatment.”

The crop’s first spring fungicide was based on 200g/ha of tebuconazole, which Mr Bristow says helps to encourage compensatory growth lower down the plant. “It’s not about managing crop height, it’s to encourage crops to branch out more.”

LG Avenger’s pod shatter resistance is another trait Mr Bristow values, especially as the tractor and trailed sprayer used for pre-harvest desiccation lack the ground clearance of self-propelled machines. “Given the pod shatter resistance, we probably won’t use a pod sticker this season.”

Mr Bristow concludes; “The crop’s looked really strong throughout this season so far, with lots of pods forming during flowering, so if it carries all of those through to harvest, I hope it will do very well. We’d like to get at least 4-4.5 t/ha, maybe more ideally.

“I’m confident that we’ll be growing LG Avenger again next season, with a slightly larger area of 59 ha planned.”

LG Avenger

 

CSFB Resilience explained

Florentina Petrescu, Oilseed Rape Product Manager

LG CSFB Resilience is “a novel genetic approach that tackles CSFB at key crop stages, as part of an effective integrated pest management strategy on farm”, explains Florentina Petrescu, Limagrain UK OSR Product Manager.

Resilient varieties feature a series of characteristics that make them better adapted to escaping damage during two crucial periods in the autumn and spring, so it is not just about a single genetic trait, she says. These characteristics include:

  1. Strong autumn dynamic growth to help developing crops escape the early “shot holing” damage caused by adult flea beetles feeding on cotyledons and first leaves, which can result in significant leaf loss and complete crop failure in extreme cases
  2. Rapid stem elongation in the spring to improve the plant’s resilience to damage caused by larvae mining into petioles and stems
  3. A capacity in some varieties (e.g. LG Avenger) to limit the number of larvae that develop within the stems – the exact reasons for this are still being identified
  4. Reduced CSFB larvae damage severity – e.g. stunted, bushy plants.

 

LG Adapt has fantastic potential!

Changing from a trusted variety to a new one can sometimes require a leap of faith, but for Northumberland farmer Andrew Reed, of East Ancroft Farm, it is a move that seems to be paying off.

Andrew Reed, East Ancroft Farm, Northumberland

This season, Mr Reed, who farms 800 ha of mixed cropping across four farms near Berwick-upon-Tweed, swapped from proven oilseed rape variety, Aurelia, to Recommended List newcomer LG Adapt, sowing 100 ha after winter barley last August.

“Aurelia has been a superb variety for us over the past three years, but when the seed wasn’t available from our usual source last autumn, we decided to give LG Adapt a go on the advice of our agronomist, and data from Limagrain trial sites.

“I was looking for the next step forward in varieties, and so far, it all looks fantastic. It established really well, and has come through the winter and spring looking clean and superb. If anyone has a better 200-acre block of oilseed rape, I will shake their hand.

“I’m really looking forward to harvest,” he continues. “Last year’s Aurelia, which was grown on a heavier block of land, came in at 5.5 t/ha, so hopefully we can get close to, or exceed that.

“Oilseed rape looks like it could be the breadwinner this harvest, followed by first wheats.”

Looking beyond yield

While yield potential is obviously a big driver when choosing any new variety, and LG Adapt sits among the best at 106% on the 2026/27 AHDB Recommended List, other factors are also important to Mr Reed.

Disease resistance is one of those, and here too LG Adapt scores well, with good stem health, and Turnip Yellows Virus (TuYV) resistance.

Mr Reed says no fungicide was needed last autumn, while this spring, his LG Adapt received two main fungicides, one with additional growth regulation and foliar micronutrients at stem extension in March, and another at mid-flowering in late April.

Mr Reed also values LG Adapt’s pod shatter resistance, which can be a particularly valuable trait when growing oilseed rape on some of the more exposed fields close to the east coast, where significant issues with seed loss due to windy conditions were experienced six years ago.

Desiccation is also carried out with a trailed sprayer that lacks the ground clearance of a self-propelled machine, so pod shatter resistance should help to limit any tramline losses too, he notes.

All being well, Mr Reed plans to grow a similar area of LG Adapt again next season. “I don’t like to change varieties too much, as it’s good to learn how we can push them to maximise their potential on our farm. We had Aurelia for three years, and I’d like to think that we’ll have LG Adapt for at least another three years, if not more.”

LG Adapt at East Ancroft Farm

 

LG Adapt

 

Read more on LG ADAPT by clicking here!

Oilseed Rape Gaining Momentum

There is now more positivity than ever for oilseed rape as a crop around the UK, as 2025 was a much stronger year for it.

Harvest results indicate average yields have increased to 3.76 t/ha for 2025 harvest – a significant increase on the 2.8 t/ha recorded in 2024.

Florentina Petrescu, Oilseed Rape Product Manager

The recovery comes along with new confidence in the crop and improved establishment across much of the country, with 2026 crops looking very promising.

Market conditions have also provided a welcome boost. Commodity prices were on average £20-£40/tonne ahead of last year, and are holding strong currently, helping farmers restore margins and strengthen the crop’s position in rotations.

Area figures confirm this trend, with an average of 14% increase on last year’s grown area.

Seed market dynamics also underline the crop’s renewed strength. Despite heavy competition, LG varieties have maintained good market share, keeping LG firmly in the number 1 position for this crop group. This has been boosted by the introduction of LG Adapt – the highest yielding variety with pod shatter resistance, and the only cabbage stem flea beetle resilient variety in the market – LG Avenger.

2025 harvest has also made a first for LG oilseed rape varieties, as Lincolnshire farmer, Tim Lamyman, has broken the world record for oilseed rape with LG Avenger, achieving a massive 7.52 t/ha crop.

LG Adapt is making headlines of its own, with it leading the field for oil content in the UK in 2025, having the highest oil yield out of over 35 varieties tested – giving farmers an advantage for higher oil bonuses.

Varieties like LG Armada, LG Academic and LG Adeline, are holding strong, with good performance on the AHDB 26/27 RL, showing consistency of the varieties across regions and seasons. This year’s list also marks the introduction of LG Calvin CL – the highest yielding Clearfield® variety on the RL.

Overall, the data suggests that oilseed rape is regaining ground. With improved genetics, stronger industry collaboration and a more favourable market, the crop is once again demonstrating its value as a resilient and profitable break crop for UK farmers.

Florentina Petrescu

Oilseed Rape Product Manager, Limagrain UK