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Ascochyta Blight

Ascochyta Blight

Ascochyta rabiei

fungi

In a Nutshell

    Gray areas can be found on leaves, stems or podsLesions turn brown and concentric rings develop in these lesions

Hosts: %1$s

· Chickpea · Soybean

Symptoms

The first symptoms that can be found are gray areas on all above ground parts of the plant. Later, these lesions turn brown and concentric rings develop with darker margins. These concentric rings are the most characteristic symptom of the disease.

Trigger

Ascochyta Blight can overwinter on plant residues for several years.The pathogen is dispersed by wind, but is also seed-borne. Spores can travel over several kilometers. For an infection, leaf wetness of minimum 2 hours is required. From the developing lesions, the disease is further spread.

Biological Control

Sorry, we don't know of any alternative treatment against Ascochyta rabiei . Please get in touch with us in case you know of something that might help to fight this disease. Looking forward hearing from you.

Chemical Control

You can treat infected seeds with Thiabendazole. In favourable conditions, apply a foliar fungicide based on Chlorothalonil to prevent an infection 7 to 10 day before bloom initiation. Seven to ten days after applying Chlorothalonil, a systemic fungicide (Proline, Endura, Priaxor etc.) is generally advised.

Preventive Measures

    Choose more resilient varietiesApply crop rotation - Plant chickpeas only once in three yearsUse certified disease-free seeding material