CASSAVA PESTS AND DISEASE CONTROL

CASSAVA PESTS AND DISEASE CONTROL

Cassava Leaves

Pests 

  1. Cassava Green Mite
  • To avoid this pest, make sure to plant early at the onset of rains.
  • Biological control through using predatory mites and parasites.
  • Carry out crop rotation.
  • Integrated Pest Management is also highly advisable.
  1. Cassava Mealy Bugs
  • They are effectively controlled by their natural enemy, a parasitic wasp.
  • Use integrated pest management.
  • Routine checks through the garden are also highly advised.
  • Plant resistant and tolerant varieties.

Diseases

  1. Cassava Mosaic Disease

Symptoms

  • Chlorosis where plants produce insufficient chlorophyll.
  • Mottling of leaves
  • Leaf fall.

Control

  • Plant resistant or tolerant varieties e.g. the NASE and TME varieties (e.g. NASE 14, 15, 16, 17, 18, 19, NAROCAS 1, 2 and TME 14 and 204).
  • Practice crop rotation with legumes.
  • Use disease-free planting material.
  1. Cassava Brown Streak Disease

Symptoms

  • Venial necrosis.
  • Brown streaks on the stem.
  • Necrotic dry rot on the roots.

Control

  • Planting cuttings from disease-free areas/gardens after being certified by MAAIF.
  • Planting tolerant varieties e.g. NASE 14, 19, and NAROCAS1. (Farmers should from time to time seek advice from Extension staff on the latest tolerant varieties)
  • Uprooting and burying or burning diseased plants or entire field.
  • Integrated disease management.
  • Most CMD resistant/tolerant varieties are susceptible to CBSD but the tolerant varieties currently recommended to farmers include NASE 14, 19 and NAROCAS1.
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