Efficacy and toxicity of insecticides to green peach aphid

• Autor(a) principal: Lima Neto, Jaconias Escócio
• Data de Publicação: 2019
• Outros Autores: Rolim, Guilherme Gomes, De Maria, Susanne Lúcia Silva, Watanabe, Sara Yuri Medeiros, Mendes, Thalita Christine Lima
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Revista de Ciências Agrárias (Belém. Online)
• Texto Completo: https://ajaes.ufra.edu.br/index.php/ajaes/article/view/3093
• topic: Myzus persicae; piretroide; neonicotinoide; diamidas antranílicas; suscetibilidade; Manejo de inseticidas; Myzus persicae; Pyrethroid; Neonicotinoid; Anthranilic diamides; Susceptibility; management of the insecticides resistance in arthropodes pests

Outbreaks of Myzus persicae (Sulzer) (Hemiptera: Aphididae) populations are not rare in Brassica crops in Pernambuco State (Brazil). The aim of the present study was to perform laboratory assessments in seven insecticide formulations against M. persicae. The direct spray and leaf dip methods were used in the experiment. M. persicae mortality rates were subjected to variance and Probit analyses. Based on the results, thiamethoxam + lambda-cyhalothrin, thiamethoxam, lambda-cyhalothrin and thiamethoxam + chlorantraniliprole were the most efficient insecticides after 24-hour exposure, since they caused over 95% mortality through the direct spray method. LC50s ranged from 0.10 to 9.1 mg a.i./L in chlorfenapyr and chlorantraniliprole, respectively, in the leaf dip method. All insecticides were effective against M. persicae, except for chlorantraniliprole. Chlorfenapyr, lambda-cyhalothrin, pymetrozine and thiamethoxam + lambda-cyhalothrin were the most toxic to this aphid.