Efficacy of the Combination of λ-Cyhalothrin and Chlorantraniliprole Against Four Key Storage Pests
2025
Waqas Wakil | Nickolas G. Kavallieratos | Aqsa Naeem | Hamza Jamil | Demeter Lorentha S. Gidari | Maria C. Boukouvala
With over 1000 species of pests causing losses in both the quantity and quality of stored food, insect contamination poses significant challenges. The present study assesses the efficacy of the combination of &lambda:-cyhalothrin and chlorantraniliprole against four key storage pests&mdash:Trogoderma granarium, Sitophilus oryzae, Rhyzopertha dominica, and Tribolium castaneum. Laboratory bioassays demonstrated species-dependent mortality, with S. oryzae and R. dominica suffering 100% mortality in several tested scenarios. A 90-day persistence trial revealed decreased efficacy over time, especially for T. granarium (32.0&ndash:71.4% at 0 days and 0.0&ndash:7.5% at 90 days) and T. castaneum (38.8&ndash:82.7% at 0 days and 0.0&ndash:12.7% at 90 days) vs. S. oryzae and R. dominica. Progeny production of S. oryzae and R. dominica was almost suppressed in persistence trials (0.4 individuals per vial and 1 individual per vial, respectively) after 30 days of storage at the dose of 5 mg/kg wheat. The results highlight the variability in insecticidal performance based on species, dose, exposure, and commodity type, emphasizing the need for tailored pest management strategies in the storage environment.
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