Susceptibility of the Garden Pea Leafminer, Chromatomyia horticola Goureau (Diptera; Agromyzidae), Infesting Garden Pea, Pisum sativum L., to the Six Foliar Sprays

Abstract

Concentration-mortality relationships using isoxathion, PAP, permethrin, cartap, diflubenzuron, and flufenoxuron against the garden pea leafminer, Chromatomyia horticola, were determined by laboratory assay. Potted garden pea plants infesting young leafminer larvae were sprayed under a Potter tower. LC₅₀ were determined by the results of five days after treatment except diflubenzuron (seven days after treatment). Isoxathion and cartap gave high mortality and the LC₅₀ were 87.8 and 267.6ppm, respectively. The LC₅₀ of flufenoxuron was high as 173.6ppm, but the mortality rate was not raised more than 70% and the LC₉₅ was low as 1370.1ppm. Susceptibility to the other insecticides was all low.