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Oilseed rape is an integral part of the UK arable rotation, but it’s not without its risks and challenges. Corteva is committed to supporting farmers and agronomists to grow oilseed rape successfully.
This online hub will support you through the season. Bookmark this page and visit regularly for updates.
Why Belkar® and Astrokerb® in the programme makes sense for established oilseed rape
A successful oilseed rape crop is built right from the beginning. Once plants have emerged and begun to grow, protecting that investment becomes the priority. The herbicide strategy plays a very key role. Every weed competing with the crop for moisture, light, nutrients and space can reduce vigour, slow canopy development and ultimately impact yield potential.
That's why a programme approach to weed control is often the most effective strategy.
Belkar® provides the flexibility to assess crop growth and actual weed pressure before making treatment decisions. Applied from 1 September, it targets a wide range of competitive broad-leaved weeds including cleavers, cranesbill, fumitory, mayweed and poppies, helping remove competition at a time when young crops need every advantage. Controlling weeds early allows oilseed rape to establish more rapidly, make better use of available moisture and nutrients, and build biomass ahead of winter.
Following with Astrokerb® later in the autumn completes the programme by delivering reliable grassweed control alongside additional broad-leaved weed activity. This two-step approach enables growers to match inputs to field conditions, tackle weeds when they are most vulnerable and maintain crop competitiveness throughout the establishment period.
In a season where many crops may be drilled later and establishment is being driven by conditions rather than calendar dates, a Belkar followed by Astrokerb programme provides the flexibility, performance and reassurance needed to maximise the potential of every hectare of oilseed rape.
Further reading and resources
OSR in the ground? Now is the time to protect your investment. Explore the latest advice on managing weed competition, integrating companion crops and building a flexible herbicide programme with Belkar®, Astrokerb® and new LaDiva® to maximise crop competitiveness and yield potential.
New article: Oilseed rape establishment and weed control in 2026
Videos: Getting OSR off to the best possible start: Hugh Guinan's autumn advice. Watch our two videos below to learn more.
Getting OSR Off to the Best Possible Start: Hugh Guinan's Autumn Advice
Growing oilseed rape? Give your crop the best chance of a strong, competitive start. A flexible post-emergence approach to weed control can help minimise early competition, support establishment and protect yield potential this autumn. https://www.c
Getting OSR Off to the Best Possible Start: Hugh Guinan's Autumn Advice
Growing oilseed rape? Give your crop the best chance of a strong, competitive start. A flexible post-emergence approach to weed control can help minimise early competition, support establishment and protect yield potential this autumn. https://www.c
OSR establishment: Why conditions matter more than calendar date
Key factors behind successful oilseed rape establishment and why a condition-led approach could make all the difference
OSR establishment: Why conditions matter more than calendar date
Key factors behind successful oilseed rape establishment and why a condition-led approach could make all the difference
PACTS results now available for winter oilseed rape hybrids from Pioneer®:
We’re excited to share the very latest results from the Pioneer Accurate Crop Testing Systems (PACTS) for winter oilseed rape. These trials are designed to provide growers with robust, field-tested data to support confident decision-making when selecting hybrids for the upcoming season.
This year’s PACTS results highlight the outstanding performance and agronomic strengths of four key Pioneer hybrids:
- PT303: The UK’s first winter oilseed rape hybrid with built-in Sclerotinia tolerance, offering a strong agronomic package including Turnip Yellows Virus (TuYV) resistance and consistent yield performance.
- PT312: A high-yielding and high oil content hybrid with excellent vigour and built-in Sclerotinia tolerance. As well as TuYV resistance this variety is also Pod Shatter tolerant.
- PT315: Known for its strong disease resistance, very high oil content and reliable performance across a range of environments. This variety incorporates Pod Shatter resistance and Stem Canker resistance based on Rlm7 gene.
- PT322: The newest Pioneer hybrid delivering exceptionally high oil content (47.81% in trials) and disease resistance. With Sclerotinia tolerance, TuYV resistance, Pod Shatter tolerance and strong scores for Light Leaf Spot (8) and Stem Canker (7). The stem canker resistance is based on the newer LmS gene.
These hybrids have been rigorously tested across multiple locations and growing conditions, giving growers the confidence to choose varieties that align with their agronomic goals and local challenges.
Take a look at some of the trial results below:
Based on four UK trials conducted by Pioneer Research.
To learn more about Pioneer's OSR range, click here.
Oilseed rape product highlights
Winter oilseed rape hybrid guide
Take a look at our winter oilseed rape hybrid guide for the upcoming season to find out more about our range of hybrids. Click here to view the hybrid guide.
Maximise your oilseed rape crop potential
Product and agronomy video resources
Learn more about Belkar® and autumn weed control in OSR with Corteva herbicides
Learn more about Belkar® herbicide and autumn weed control with Clare Stapley, oilseed rape herbicide category marketing manager at Corteva Agriscience. There are three treatment options of Belkar which have performed best in trials: 1. At two true
Learn more about Belkar® and autumn weed control in OSR with Corteva herbicides
Learn more about Belkar® herbicide and autumn weed control with Clare Stapley, oilseed rape herbicide category marketing manager at Corteva Agriscience. There are three treatment options of Belkar which have performed best in trials: 1. At two true
Important stewardship considerations if you are planning to grow oilseed rape
Important stewardship considerations if you are planning to grow oilseed rape
PT303 winter oilseed rape in full flower – Built on Pioneer and Corteva performance
Out in Cambridgeshire with Tom Rouse, Corteva Area Manager, looking at a crop of Pioneer® PT303 hybrid oilseed rape. Full flower, strong pod set and backed by a solid Corteva herbicide programme.
PT303 winter oilseed rape in full flower – Built on Pioneer and Corteva performance
Out in Cambridgeshire with Tom Rouse, Corteva Area Manager, looking at a crop of Pioneer® PT303 hybrid oilseed rape. Full flower, strong pod set and backed by a solid Corteva herbicide programme.
Propyzamide - Back to Basics
Propyzamide - Back to Basics
Establish your OSR with Pioneer brand hybrids and LumiGEN seed treatments
Pioneer brand PT303, PT312, and PT315 can all have a unique seed treatment providing highly effective protection for farmers growing oilseed rape.
Establish your OSR with Pioneer brand hybrids and LumiGEN seed treatments
Pioneer brand PT303, PT312, and PT315 can all have a unique seed treatment providing highly effective protection for farmers growing oilseed rape.
An introduction Pioneer's PT303
An introduction Pioneer's PT303
OSR season update, conditions, herbicide choice
#CortevaTalks brings you a short update with Midlands Area Manager, Abi Morton, on OSR, the season and how to get the best out of Korvetto® herbicide this March. As spring emerges after a tough, wet but mild winter, broad-leaved weeds have continued
OSR season update, conditions, herbicide choice
#CortevaTalks brings you a short update with Midlands Area Manager, Abi Morton, on OSR, the season and how to get the best out of Korvetto® herbicide this March. As spring emerges after a tough, wet but mild winter, broad-leaved weeds have continued
Korvetto herbicide overview
Korvetto herbicide overview
An introduction to BlueN™
An introduction to BlueN™
Key weeds to watch out for in OSR
Explore the weed biology section of our website to learn more about weeds and how you can control them.
Disease management in oilseed rape
Explore our disease management section of our website to learn more.
