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Controlling clubroot through top resistance plant breeding

Agronomy Issues
30.07.2020
Clubroot effects

Syngenta TopRes technology combines robust clubroot resistance into leading brassica variety genetics.

The valuable trait is now available in an increasing range of high-yielding and extremely marketable varieties of Brussels sprout, broccoli, and cauliflower, along with savoy and white cabbage, the pioneering plant breeding R&D provides protection against different clubroot isolates.

Climatic conditions that trigger clubroot infection – periods of heavy rain, followed by hot weather – are becoming increasingly problematic for growers.

As an integral part of an Integrated Pest Management (IPM) approach to brassica agronomy, clubroot resistance can assure performance and crop uniformity, even on land with known levels of infection. Varietal genetic resistance is a key factor in preventing pathogen levels building up in the soil.

Clubroot resistant varieties

Losses from clubroot effects can typically total over £1700/ha from growing costs alone, coupled with more than £4700/ha loss of income.

Syngenta is committed to investment in a specialist brassica plant breeding programme, providing the genetics to grow sustainable businesses for vegetable growers.  

Pick from the outstanding Syngenta range of TopRes brassica varieties to prevent clubroot losses to your crops.

Clubroot issues

The soil borne clubroot fungal disease (Plasmodiophora brassicae) attacks the roots of brassica crops - seriously limiting potential and production efficiency of affected brassica crops.

Clubroot is considered as one of the most economically important diseases of brassica crops, with an estimated 10% of the total cultivated area worldwide affected.

The swollen and distorted damage caused to the roots causes crops to be stunted and, in most cases, there is a reduction in yield. The pathogen survives in the soil for up to 15 years in the form of resting spores released from decayed galls.

Clubroot effects

Syngenta has invested in years of breeding to offer a high level of resistance in a range of brassica varieties for commercial cropping, utilising reliable and robust available genetic traits.

Growing benefits of TopRes

TopRes resistance, developed by Syngenta against clubroot, is effective against the predominant races Pb:0 and Pb:1 and against the less frequent race Pb:3. It does not offer protection against the infrequent race Pb:2 that may occur in some fields.

Genetic resistance is one of the primary tools to manage clubroot.

Cultural measures, such as liming, use of fertilisers with a high percentage of calcium, good drainage and crop hygiene management are several of important components of an integrated approach to manage the disease.

It is always recommend to first execute small field trials of a new variety, before starting large scale commercial production.

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Download the brochure to find out more about TopRes and all Syngenta vegetable and salad varieties

Veg brochure 2020