Cost-Effective Disease Control in Oilseed Rape This Spring
Posted on 20 February 2025
Maintaining a healthy crop canopy in spring is essential for maximising green leaf area and light penetration as crops approach the critical flowering stage.
Clayton offers a range of leading fungicide products for OSR crops this spring. Achieving good crop growth to maximise yields relies on effective control of damaging diseases in the spring. With effective prothioconazole-based options and a range of other fungicides, our product choice for early-season disease control provides good protection for OSR crops, offering growers more options.
Key Spring Diseases in OSR and How to Manage Them
Light Leaf Spot Focus
Light Leaf Spot can continue to spread in the spring, often carrying over from autumn infections, especially in mild, wet conditions or where earlier fungicide timings were missed. Left untreated, it can severely impact leaves, stems, flowers and pods, causing significant yield losses.
Product options:
Clayton Tuskar™ – 250g/L prothioconazole (moderate control)
Clayton Navaro™ – 125g/L prothioconazole + 125g/L tebuconazole (reduction of disease)
Clayton Tebucon 250 EW™ – 250g/L tebuconazole (supportive control)
Sclerotinia Stem Rot Focus
Sclerotinia stem rot poses another spring risk, a soil-borne disease that infects at flowering and can lead to premature ripening, lodging, and serious yield losses. Conditions during mid-to-late spring often favour its development, making timely applications critical.
Product options:
Clayton Augusta™ – 250g/L azoxystrobin (moderate control)
Clayton Tuskar™ – 250g/L prothioconazole (control)
Clayton Navaro™ – prothioconazole + tebuconazole (control)
Clayton Tebucon 250 EW™ – tebuconazole (supportive control)
Other Spring & Early Summer Diseases
Alternaria (Dark Leaf Spot / Pod Spot) Focus
Affects pods, seeds, and the upper canopy. Can lead to pod shatter and reduced seed quality, especially later in the season.
Product options:
Clayton Augusta™ – azoxystrobin
Clayton Tebucon 250 EW™ – tebuconazole
Ringspot:
Less common, but it can occur in humid spring conditions. Affects leaves and pods, with the potential to disrupt pod development.
Product options:
Clayton Tebucon 250 EW™ – tebuconazole
For more information, please take a look at our latest OSR Fungicides Product Range below:
Get in touch with our Technical Team:
Will Ridgewell – Commercial Manager – will@claytonpp.com
Martyn Rogers – Product Development Manager – martyn@claytonpp.com