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Evolution and InnovationSave Biodiversity...Rise

Carnations

Crop: Carnation

S.N: Dianthus caryophyllus

Family: Caryophyllaceae

PestsM

MAJOR PESTS OF CARNATIONS :

1. Red spider mite, Tetranychus urticae                         

                                    T. cinnabarinus

Symptom of damage

  • Spider mite is the most serious pest on carnations
  • Nymphs and adults suck the sap from undersurface of the leaves
  • Affected leaves turn pale and have a dusty coating and fine webs.
    In severe attack the growth of the plants becomes  stunted.
    
Adult, Red spider mite

Management

  • Initiate management measures when the density of mite reaches 1/leaf (ETL).
  • Use varieties having straight and flat leaves, which are proved to be resistant.
  • Cleanliness and elimination of weeds will reduce the incidence of mite.
  • Proper ventilation and water - prevent pest attack in greenhouse.
  • Spraying of dicofol 18.5 EC @ 2 ml/l or wettable sulphur @ 3 g/l
  • Spray application of chlorfenapyr 10 EC at 500 ml/ha (monthly interval)
  • Fluvalinate 25 EC at 50 ml/ha also suppress T. cinnabarinus

 

2. Aphids, Aphis gossypii 

Symptom of damage

  • Nymphs and adults suck the sap and feeds on flower buds, leaves and terminal shoots
  • It also transmits mottle virus. 

Identification of the pest

  • Globular yellowish green to brown or black in colour
Adult - Aphid

Management

  • Spray dimethoate 30 EC @ 1 ml/l of water before the opening of flower.

 

3. Thrips, Thrips tabaci 

Symptom of damage

  • Nymphs and adults suck the sap from leaves
  • Plants become yellow often with black specks and slight crinkling. 
  • In severe attack the growth of the plant is adversely affected. 
  • Streaks on the flowers making them unmarketable.

Identification of the pest

  • T. tabaci - nymphs and adults are pale yellowish in colour
Management
  • Spray dimethoate 30 EC @ 1 ml/l or fenitrothion 50 EC @ 1 ml/l or malathion 50 EC @ 1 ml/l of water.

 

4. Carnation tortrix moth,  Tortrix pronubata

Symptom of damage

  • Caterpillar webs the leaves with silken threads and feed inside the shelter.
  • Injury - found around the growing points of the shoots
  • larvae will feed on the leaves and may also bore into the flower buds.

 

Identification of the pest

Larva
Adult

 

Management

  • A mixture of carbaryl and dicofol is recommended for the control of larvae of tortrix moth in nurseries and beds.

 

5. Carnation fly, Hylemya briennescens      

Symptom of damage

  • Maggots bore into the leaves and growing tips of young plants
  • Death of young plants by tunnelling down the apical shoot.

                                                           

Management

  • Apply carbaryl 4G or phorate 10G @ 10 kg/ha to the soil followed by light irrigation.
  • Spray malathion 50 EC @ 2 ml/l of wate
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