Jasmine Whitefly

📖 Description

Jasmine Whitefly (Dialeurodes kirkaldyi) is an important pest of jasmine across the Indian subcontinent, particularly severe in the commercial jasmine-growing belts of Tamil Nadu (Madurai, Dindigul, Theni), Karnataka (Bengaluru, Kolar), Andhra Pradesh (Guntur, Krishna) and Maharashtra where India is the world’s largest producer of jasmine (over 80,000 hectares cultivated for flowers used in garlands, perfumery and religious offerings). The pest is particularly damaging to jasmine because (a) it feeds on leaf undersides where it is hard to detect until colonies build up, (b) the honeydew it excretes coats the foliage AND the flowers, (c) the black sooty mold that grows on the honeydew ruins the market value of jasmine flowers completely (garland makers and perfumeries reject any flowers with visible sooty mold), (d) infested plants produce fewer and smaller flowers due to reduced photosynthesis from sooty mold and direct feeding damage, and (e) the pest has a wide host range allowing populations to persist between jasmine crops via weeds and other hosts. The pest is most severe in humid shaded gardens with poor air circulation and in continuous jasmine monocropping. IPM with yellow sticky trap monitoring, biological control (Encarsia parasitoid and Amblyseius predatory mite are highly effective), Verticillium lecanii sprays (a fungus that specifically attacks whitefly nymphs), and need-based insecticide rotation provides effective and sustainable control. The pest is a particular concern for smallholder jasmine farmers (a high-value crop providing daily income through flower sales) because even mild infestations can render flowers unsaleable, devastating household income. Planting clean nursery stock, maintaining good garden hygiene (no weeds), and conserving native natural enemies are the foundation of sustainable jasmine whitefly management.