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Carnation

Red spider mite

Symptoms 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.

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

Aphids

Symptoms of damage

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

Identification of pest

Globular yellowish green to brown or black in colour

Management

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

Thrips

Symptoms 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 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.

Carnation tortrix moth

Symptoms 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.

Management

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

Carnation fly

Symptoms 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 water