fungal, viral or bacterial infection of the potato tuber. dark spots inside the potato. peeled raw potato with spots

affected alternaria area bacterial blight blotch danger dark disease farm farmhouse farming fight fingers food fungal fungi fungus fusarium grey hand health horticulture infection inside kitchen late loss natural nongmo peel peeled peeling potato potatoes product pruning quality raw rhizoctonia rot safety scab spots stains tuber uncooked viral woman