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PEST MANAGEMENT DECISION GUIDE: GREEN AND YELLOW LIST

Quick wilt disease on Black pepper

Phytopthora capsici Sinhala-Ikman malaveema Tamil- Milakil saduthiiyana vadal nooie
Sri Lanka
  • Use disease free planting materials
  • Prune ground runners and lateral branches up to 1- 1.5 feet from collar area
  • Avoid standing water in the field, improve the drainage system
  • Avoid splashing of water to the foliage during irrigation
  • Remove mulches and keep weed free around the vine base (3 feet diameter) in rainy seasons
  • For nursery plant production, obtain rooted cuttings (ground runners) from disease free mother vine gardens
  • Look for the following symptoms especially 3-4 weeks after heavy rain on foliage and roots
  • Sudden wilting of vine
  • Leaf yellowing and black colour patches on the leaves
  • Severe shedding of leaves, internodes and spicks
  • Rotting and decaying at the collar region, feeder roots and main root
  • Remove all the affected parts/plants from the field and burn
  • Mancozeb 64% + Metalaxyl 8% WP. Rate of dilution - 25g / 10 lit. of water. Rate of Application: 3-4 lit. per vine
  • Drench only to the diseased vines and surrounding healthy vines. WHO class II. FRAC MOA M3+A1. lternate with Bordeaux mixture. Toxic to predatory mites, parasitoids and fish and moderately toxic to flower bugs
  • Bordeaux mixture 1%. Rate of Application - 3-4 lit. per vine
  • Drench only to the diseased vines and surrounding healthy vines. Dissolve 100g of lime in to 9 L of water and dissolve 100 g of copper sulphate in 1 L of water separately, using plastic or clay pot. Slowly add the copper sulphate solution to the lime solution until colour changes to dirty green. Immerse a stainless-steel knife with a polished blade to test the availability of free copper. If the blade shows reddish colour, add more lime solution
  • Bordeaux paste
  • Paste to infected roots. Mix 100g of lime and 100g of CuSO4, add water until it becomes a thick paste
AUTHOR(S): W.M.R.W.B.Wijekoon, Department of Export Agriculture

CREATED/UPDATED: August 2018/August 2020
PRODUCED BY: Plantwise

©CAB International. Published under a CC-BY-SA 4.0 licence.