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Gladiolus Pests – Kisan Suvidha
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Gladiolus Pests

gladiolus pests

Gladiolus Pests

Major pests of Gladiolus are:-

1.Gladiolus Thrips:  Thrips simplex

Symptom of damage:

  • Deformities and discolouration of gladiolus flowers and corms (bulbs)
  • Attacked- buds and flowers remain closed or open irregularly.
  • Infested surfaces show whitish grey glistening.

Identification of the pest:

  • Egg – opaque white, smooth and bean shaped, deposited in the leaf tissue and corms.
  • Adult – milky-white which later turn brown
  • Wings have a light transverse band near the base

 

2.Honey suckle thrips:  Thrips flavus 

honey suckle thrips

Symptom of damage:

  • Nymphs and adults feed on the blossoms which shrivell and become dark.
  • Nymphs are white to pale yellow in colour.

Identification of the pest:

  • Adults – yellow to orange in colour.
  • Legs and forewings are yellow to pale yellow.

Management:

    • Spray Methyl demeton or Dimethoate 2ml/lit.
    • Spray Malathian 1.25 ml/lit. or Carbaryl 2g/lit before bud initiation.

 

3.Flower thrips: Frankliniella spp.

flower thrips

Symptom of damage:

  • Flower thrips often invade gladiolus and damage the florets.

Management:

  • Spray methyl demeton 25 EC or dimethoate 30 EC @ 2 ml/l. of water.
  • Spraying of malathion 50 EC @ 1.25 ml/l or carbaryl 50 WP @ 2g/l of water before the bud initiation.
  • Spikes may be sprayed with methyl parathion 50 EC @ 1ml/l l of water (flower emergence period).

 

4.Mirid bug:  Lygus lineolaris 

Mirid bug

Symptom of damage:

  • Bugs – puncture the terminal shoot below the flower bud and inject toxic saliva
  • Flower drop occurs

Identification of the pest:

  • Nymphs are greenish.
  • Adult bugs are mottled yellowish or reddish brown with flat, oval bodies

Management:

  • Destroy the weeds in the vicinity of the crop.
  • Spray dimethoate 30 EC or methyl demeton 25 EC 2ml/lit of water before flowering.

 

Source-

  • TamilNadu Agritech Portal

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