Commercial Floriculture

Pest and diseases

Pest
The plants are occasionally infested by aphids, scale insects, mites, thrips, mole cricket and beetles.
Dimethoate (0.3 per cent) is effective to control aphids.
Scale insects attack leaves and stems and weaken the plants by sucking the plant sap.
Malathion (0.1 per cent) spray controls them

Disease
Bacterial Diseases
Soft rot (Erwinia carotovora subsp. Carotovora),
Xanthomonas blight (Xanthomonas campestris pv. Dieffenbachiae),
Anthracnose (Colletotrichum gloeosporioides),
Phytophthora leaf spot,
Flower blight, and
Root rot (Phytophthora parasitica)
Nematode:
Burrowing nematode decline (Radopholus similis)

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