Susceptibility survey of Ommatissus lybicus (de Bergevin) populations against deltamethrin and fenitrothion in Oman.

Despite of extensive application of insecticides, severe infestation of date palms is reported with Ommatissus lybicus every year. The development of insecticide resistance in the field strains receiving heavy pesticide regimes can be a reason for unsuccessful control. Seventeen field strains of O.