Ragi leaves and necks turning dark with shrivelled grain, what disease?

Dark lesions on the leaves with the neck below the finger heads turning black and shrivelled grain are the signs of blast in ragi, the same kind of disease that hits rice, where neck and finger blast at the head stage cause the most damage by cutting off food to the developing grain. Humid weather and excess nitrogen make it worse. Please confirm with a photo to your KVK or agri officer. Cultural steps that help are using tolerant ragi varieties, treating seed before sowing, avoiding heavy nitrogen, and not sowing too densely in damp, shady patches. Removing badly infected plant debris after harvest reduces carryover. If the disease is active and the crop is still away from harvest, recommended fungicides include actives such as tricyclazole, but follow the label dose, the pre-harvest interval and your local KVK recommendation and rotate the mode of action. Because neck blast strikes at the head, protecting the crop around heading stage is the key window.