Pest & Disease Control for your Crop

POP pest page
Common scab or corkey scab
Potato

Symptoms

  • Corkiness of the tuber periderm is the characteristics symptoms.
  • 1/4 inch into the tuber surface are russette appearance.
  • Slightly pitted and Light brown to dark brown lesion appears on the infected tuber.
  • Affected tissue will attract insects.

Preventive Measures

Avoid excessive irrigation. deep summer ploughing in summer.

Description

  • Pathogen infects young developing tubers through the lenticells and occasionally through wounds, Pathogen can survive in soil, uncomposted manure or seed.
  • It spreads through contaminated soil, seed and water.
  • Disease is common in fields with low soil pH favored by high soil moisture.
  • Disease problems may be aggravated by excessive irrigation.
  • A severe infection can reduce the marketable yield and can damage the eyes of seed potatoes.
  • It can also greatly reduce the market value of the crop.

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