Development of a bioassay method for evaluating slow-acting insecticides against Frankliniella intonsa (Trybom)

Key Points

• To develop a bioassay method for assessing slow-acting insecticides on Frankliniella intonsa.
• Developed a sensitivity testing method using leaf pieces of Phaseolus vulgaris on moistened cotton wool.
• Evaluated insecticidal effects at 2 and 7 days post-treatment on various thrips species.
• Emamectin benzoate and cyantraniliprole showed delayed efficacy against Frankliniella intonsa at 7 days.
• Other thrips species exhibited high control mortality rates at 7 days, rendering delayed evaluation ineffective.