Cereal volunteers can be a significant problem as winter oilseed rape crops start to establish. Left unchecked, they compete aggressively for light, water, and nutrients – leading to yield losses. Volunteer cereals are usually present in crops grown after a cereal harvest and establish quickly when the oilseed rape plant is still small and uncompetitive. ... Read more
Permissible Tank Mixing Tank mixing with an insecticide for CSFB control is permissible if required. The addition of a non-wetted water conditioner (that has no built-in adjuvant) will improve efficacy in hard water areas and is strongly recommended. Tank mixtures with propyzamide can now be permitted and can also be additionally useful for grass weed... Read more
Protect crop establishment with effective early grass weed control. Many of the key grass weeds affecting Winter Oilseed Rape (OSR), including blackgrass, volunteer cereals and annual meadow-grass, emerge during late summer and early autumn, competing with young crops for light, moisture and nutrients at a critical stage of establishment. Successful OSR establishment relies on effective... Read more
Protect crop establishment with effective early disease control. Getting the crop in and away with a healthy, well-structured autumn canopy is essential for supporting root development, improving crop resilience and protecting oilseed rape through the critical establishment and overwintering period. Problem diseases to watch out for in the autumn… Phoma leaf spot For the... Read more
Many common weeds that cause problems in winter OSR germinate during the late summer and early autumn period, at a time when the crop is not yet fully established. These include Blackgrass, Volunteer cereals and other problem grass weeds. Blackgrass control Blackgrass is a key threat in OSR crops with the potential for significant yield... Read more
Clayton Gatso EC - Product Information 2026
Clayton Business Development Manager, Jessie Boden advises growers to consider the merits of applying flowering fungicide sprays soon this month to protect oilseed rape crops. “With oilseed rape crops looking in good condition around the UK at the moment and prices holding around the £440450/tonne mark, protecting these crops during flowering against sclerotinia infections may... Read more
Maintaining a healthy crop canopy in spring is essential for maximising green leaf area and light penetration as crops approach the critical flowering stage. Problem diseases to watch out for in the spring… Light Leaf Spot Focus Light Leaf Spot can continue to spread in the spring, often carrying over from autumn infections, especially in... Read more
With many Oilseed Rape crops developing rapidly after favourable autumn conditions, planning stem extension fungicide applications could be vital this spring. Early spring is a key timing to assess Light Leaf Spot (LLS) risk, particularly in forward crops, to help protect yield and manage canopy structure. As crops reach mid-calf height, LLS risk increases, highlighting... Read more
OSR Stem Extension - Technical Bulletin - 2026
According to a number of agronomists in the UK, growers are now reporting signs of Light leaf spot in winter OSR crops, as well as disease threats from Phoma, in recent days. Therefore, fungicide treatments may be required if disease pressure remains or increases in the coming weeks for both these damaging diseases. The end... Read more
Oilseed rape crops are looking strong across the UK this autumn, but with conditions currently favourable for Phoma and Light Leaf Spot, now is the time to review your disease management strategy. Reminder for Key Disease Thresholds Phoma: Treat when 10–20% of plants are infected. Use lower threshold on more susceptible varieties and/or where plants... Read more
Growers looking to find out more information about pre- and post-emergence cereal herbicides, post-emergence OSR herbicides, autumn oilseed rape fungicides and OSR growth regulators can find helpful information in our autumn product guide below. This provides a way for growers to plan their autumn product choices and ensure they use cost-effective solutions for both weed... Read more
As forward winter oilseed rape crops can continue to challenge growers with excessive autumn growth and increased lodging risk, effective canopy management is more important than ever. Clayton Nascar™ offers a reliable, dual-active solution to help bring balance and control — both in the autumn and spring. Why Choose Clayton Nascar? Useful crop management tool... Read more
The stewardship guidelines for Clayton Gatso have been updated for 2025 and can be found below or click here to download a copy. Clayton Gatso™: Stewardship Guidelines: Oilseed Rape 2025 Permissible Tank Mixing Tank mixing with an insecticide for CSFB control is permissible if required. The addition of a non-wetted water conditioner (that has no... Read more
Product Spotlight: Clayton Satchmo™ – Systemic, foliar applied herbicide for the post-emergence control of cereal volunteers, annual and perennial grass weeds in oilseed rape. Why choose Clayton Satchmo? Ideal option for cereal volunteer control in OSR crops Wide window of post-emergence application use Versatile herbicide for controlling Cereal volunteers and Wild oats in OSR crops... Read more
Many common weeds that cause problems in winter OSR germinate during the late summer and early autumn period, at a time when the crop is not yet fully established. These include Blackgrass, Volunteer cereals and other problem grass weeds. Blackgrass control Blackgrass is a key threat in OSR crops with the potential for significant yield... Read more