The Evaluation of Pheromone Traps Glue Formula for Monitoring of Spodoptera exigua Hubner (Lepidoptera Noctuidae) in Shallot Fields

Abstract

Spodoptera exigua is considered as one of the most important pests in shallot plant. The objective of the research was to evaluate activity of synthetic pheromone which diluted in glue (glue formulation) for monitoring the Spodoptera exigua moth populations. This research was conducted from November until December 2021 in Tanah Datar, Bukittinggi Regency, West Sumatera. A sex pheromone glue formula was spread on yellow board trap and applied on shallot at 14 days after planting. This research was done using a randomized design, consist of sex pheromone glue formula treatments, with different amount of active components of adhesive glue (in 100 mL) i.e. A (50 µg), B (100 µg), C (200 µg), D (300 µg), and one trap without sex pheromone as control (E). Each treatment was repeated five times. The observation was made by counting the number of moths caught in the sex pheromone trap. The results showed that an effective sex pheromone formula to attract male moths was the B formula. The B (100 µg) formula can catch more male moths higher than that of other formulas and recommended further to utilize for monitoring of S. exigua.