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PEST MANAGEMENT DECISION GUIDE: GREEN AND YELLOW LIST

Groundnut chlorotic rosette virus

Groundnut chlorotic rossette virus (GRV)
Kenya
  • Plant tolerant vrieties (ICGV-SM89749, ICGV-SM 88710, Uganda stripe)
  • Plant early to escape vector build-up
  • Rotate with maize and sorghum to decrease vector presence
  • Remove all alternative hosts such as Euphobia spp., volunteer groundnuts and all other weeds before planting
  • Scout (once a week) for aphids starting 5 days after germination to 50% flowering
  • Look out for:
    • Yellowing, stunting, and bushy appearance on young plants while in older plants a few branches are affected
    • Slight mottling of young leaves and chlorotic older leaves with green veins
  • Take action when 10% of plants have 10 aphids (disease vectors) per plant
  • Rogue and destroy all infected plants by burning or composting
  • Spray against aphids (early or late in the day) with soap solution (1 teaspoonful of dishwashing soap in 4L of water) 2-3 times at 3-4 day intervals
  • Place yellow sticky traps to kill winged aphids
  • Spray using Azadirachtin (Neem) based products such as Achook at a rate of 20mls/20L of water
  • Use protective gear when using a pesticides
  • Follow the instructions on the product label and safely dispose empty containers
  • Always consult recent list of registered pesticides (PCPB)
  • Spray using lamda-cyhalothrin (pyrethroid) products (Duduthrin or Tata Umeme at 60mls/20L water) to control Aphids
  • WHO Class II (Moderately hazardous) and PHI 3 days
  • Spray against aphids using Thiamethoxam (neonicotinoids), based products (Actara 25WG at a rate of 8gms/20L of water)
  • WHO class III (slightly hazardous) and PHI 7 days, thiamethoxam toxicity to bees and fish
AUTHOR(S): Jonathan M. Gekone (MOALF), Stephen Koech (KALRO) and Miriam Otipa (KALRO)

CREATED/UPDATED: September, 2015
PRODUCED BY: Plantwise

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