Insect pest of tea

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Insect pest of tea

  1. 1. INSECT AND MITE PESTS OF TEA UP COUNTRY LIVE WOOD TERMITE Postelectrotermes militaris
  2. 2. INTRODUCTION • Scientific name : postelectrotermes militaris • Family : Katotermitidae • Type : pest (insect/mite) • Common names : up country live wood termite • Host plants : Tea ( camellia sinensis )
  3. 3. LIFE CYCLE Egg Adult Nymph
  4. 4. Eggs • Eggs are minute and kidney shape. • Transparent • Eggs hatch within few days
  5. 5. Nymph • Nymphs are able to produce majority of colony workers. • These workers do maintance ,feeding young's and cleaning . • No further development in worker termites. • Some of the nymphs converted to supplementary reproductors. • These supplementary reproductors able to produce eggs by parthenogenesis. • Some of these nymphs convert in to a stage called Brachyopterous nymps. • These nymphs only have wing pads. • Some convert into Alates . • They have wings.
  6. 6. Adult • Usually occur in up country tea plantations. Up country confined to Maskeliya, Nuwaraeliya. • Elevation is above 900m • Usually remain as colonies. Single colony usually confined into a single tea bush. • Single colony consist of large number of individuals 3000-5000. • These adult termites enter into the tea bush through roots. • When the colony reach maximum stage they migrate from one tea bush to another tea bush via root contact.
  7. 7. Damage • Up country live wood termite gains entry into the tea plants through the roots and construct galleries within the woody tissues of the roots collar and the finally branches
  8. 8. Damage symptoms • When branches are affected prune cuts made at the time of pruning would show cavities filled with fecal matter and occasionally the termites as well. • During the period of moisture stress one or two branches on a bush may also show signs of wilting. Since such wilting caused for reasons other than termite infestation . • Several branches tend to break off from the collar region
  9. 9. Control • All infested plants and roots removed and burn.
  10. 10. Thank you

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