Leaf blight can cause up to 50% loss in severe cases. Non-chemical measures in the source: field-resistant varieties (Muktakeshi, Jankhri), early planting to avoid heavy monsoon rain, healthy planting material, removing self-grown taro plants, and treating seed tubers with Trichoderma viride. Fungicide sprays and chemical dips for aphids, mealybugs and scales are also listed — ask your officer before using them.
Pending expert review
Source
Crop Production Guide – Horticulture Crops 2020 (Directorate of Horticulture and Plantation Crops, Tamil Nadu & Tamil Nadu Agricultural University (TNAU)), Taro – Leaf blight management, p. 146