Nutmeg (Myristica fragrans)

Lasiodiplodia die back and fruit rot (Lasiodiplodia theobromae)

Symptoms

  • The disease is common in summer season.
  • Disease affected leaves become brown in colour and dries up
  • Characterized by drying up of twigs / branches from tip downwards.
  • The bark of twigs or shoots split and dry.
  • Light to dark brown lesions appear on the stalk end of fruits which later spreads downwards.
  • In severe cases fruit rot and fruit drop occurs.

Management

  • Remove and destroy completely infected branches
  • Swab the cut ends with Bourdeaux paste
  • Spraying 1% Bordeaux mixture at regular intervals during the rainy season to prevent disease incidence.

Chemical Control

Sl.No Generic Name Trade Name Color code Dosage/litre Recommendation Remarks
Dosage/acre (200 L) Dosage/hectare (500 L)
1 Copper Oxychloride 50 WP Bensaan, Blitox, Blue copper, Bluetrox, Copter, Cupramar, Cuprina, Dhanucop, Fytolan, Fytox, Fytran, Fytolan, Hilcopper, Killex copper, Maincop Dhanucop, Star cop, Tagcop, Trucop Blue 2g 400gm 1000gm
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Extremely Toxic
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Highly Toxic
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Moderately Toxic
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Slightly Toxic