Pepper spot and scorch
- Pepper spot looks sooty
Cause | Leptosphaerulina arachidicola |
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Damage | Minor but widespread. Leaves drop off. Is often one of the earliest foliar diseases to infect crops. |
Symptoms | The same fungus causes two different symptoms under different weather conditions. Pepper spot occurs when very small spots, under 1 mm, develop on the top of the leaf. Scorch occurs when a V-shaped part of the leaf dies (usually on the margin) and a yellow zone forms next to it. |
Spread | The fungus survives on peanut residues and is spread by wind. |
Management options | Chemical Cultural Chemical registrations and permits |