Field Performance and efficacy of the natural product, Bemistop­98402 and KZ-oil when applied by different melhods against whitefly, Bemisia tabaci (Genn.) on eggplant was conducted at Shabrakhit district, Behera Governorate. The obtained results revealed that, 400 rnl./100 lit. of water from the natural product, Bemistop induced high percentages of reduc­tion in the population density of the immature stage of B. tabaci in all canopy levels of the treated eggplant. Bemistop exhibited slightly differ­ences in its efficacy than KZ-oil when it was applied by Arimitsu sprayer, but the efficiency of the two chemicals increased after application with the Prototype sprayer because its good spray quality.