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Newer molecules for the management of leaf miner Liriomyza trifolii in gerbera

Smitha, R., Rajendran, P., Suvija, N. V., Princy, T.
Acta horticulturae 2017 no.1165 pp. 107-110
Gerbera jamesonii, Liriomyza trifolii, agricultural research, biological control agents, color, cut flowers, dimethoate, fipronil, imidacloprid, leafminers, ornamental plants, spores
Gerbera (Gerbera jamesonii L.) is especially known for their wide spectrum of colors and shapes. It is very popular and widely used as a decorative garden plant or as cut flowers. Nowadays, leaf miner, Liriomyza trifolii (Burgess) (Diptera: Agromyzidae) has become a major insect pest of gerbera. A polyhouse experiment was conducted at Regional Agricultural Research Station, Ambalavayal, Wayanad to evaluate the efficacy of newer molecules and bio control agent in controlling leaf miner infestation in gerbera. The experiment was laid out in completely randomized design with three replications. Insecticides such as chlorantraniliprole 18.5% SC, fipronil 5% SC, dimethoate 30% EC, imidacloprid 17.8% SL and biocontrol agent Lecanicilium lecanii (1×10(7) spores mL-1) was evaluated against the leaf miner infestation. Among the different treatments, chlorantraniliprole 18.5% SC was found to be the most effective treatment in reducing leaf miner infestation at 15 and 30 days after treatment (6.40 and 3.33% respectively).