Preliminary study of the control effect of sex pheromone-mediated mating disruption technology on Tuta absoluta
To determine the control effect of the sex pheromone-mediated mating disruption technique on Tuta absoluta,we conducted a field investigation on the occurrence dynamics of T.absoluta and analyzed the mating disruption effects as well as the damage control effects of both sprayable pheromone dispenser and twist-tie dispenser.The results showed that the sprayable dispenser had a significant effect on the mating disruption of T.absoluta,and the damage control effect could reach up to 85%.In addition,twist-tie dispensers applied in different numbers could all effectively disrupt the mating of adults and reduce the pest population.The treatment with 50 dispensers per 667 m2 resulted in an average mating disruption rate of 88.61%,which had no significant difference from the 60 dispensers per 667 m2 treatment,and the average fruit damage control efficiency reached 82.98%,indicating an effective control of the occurrence and harm of T.absoluta.Therefore,considering the comprehensive control effect and cost,it is recommended to use 50 twist-tie dispensers per 667 m2 for T.absoluta control in the field.
Tuta absolutapheromone sprayable dispensertwist-tie dispenserprevention and control effect