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- This disease is caused by a fungus known as Alternaria solani.
- This disease can occur even before tuber formation. The first infestation occurs on the leaves below from where the disease progresses upwards.
- Brown colored spots with round oval or rings are formed on the leaves.
- The spots gradually grow in size which later covers the entire leaf and finally, the plant dies.
- MANCOZEB 75 % WP@ 600 Gram/acre or CARBENDAZIM 12% + MANCOZEB 63%@300 Gram/acre
- THIOPHANATE METHYL 70% W/W@ 300 gram/acre or CHLOROTHALONIL 75% WP@ 400 Gram/acre
- For biological treatment TRICHODERMA VIRIDE@ 500 Gram/acre or PSEUDOMONAS FLUORESCENS@ 250 gram/acre
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