Can anyone help?

lately my turmeric leaves are turning into some kind of colour. can you tell me what this is??

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vision ji it’s symptoms of leaf spot
small spot coalesce and occurs on whole leaf of plant.
very severe damage of diseases.
very difficult to control at extreme conditions.
spray tubuconazole50%+ Trifloxystrobin 25%WG(netio)@10g/10 liters of water.

burning ( smoke) of of dry grasses around main field to reduce disease severity