This is very severe in our country since 2-3 yrs. This is caused by Stemphylium botryosum f. sp. lentis. Initially disease may appear as a small back dots on young leaf but it spreads very fast covering all the leaves and flower also on steam and pods black lesions are found. When disease appear in epidemic form, the whole plant get killed.
- Some lentil variety shows horizontal resistance so bring such variety under cultivation practice
- Fungicide like Iprodine and Dithane M45 can be used
- Low plant population and good drainage reduce the severity