Efeito residual do extrato acetato de etila de Trichilia pallida Swartz (Meliaceae) para lagartas de diferentes idades de Spodoptera frugiperda (J. E. Smith, 1797) (Lepidoptera: Noctuidae)

Abstract

RESUMO Inseticidas de origem vegetal mostram limitada persistência em condições ambientais já que são degradados pela temperatura, por raios ultravioletas e por outros fatores ambientais. Com o objetivo de avaliar o efeito residual do extrato acetato de etila de

Bioactivity of a water extract of boldus (Peumus boldus Molina) against Spodoptera frugiperda (J.E. Smith) and Helicoverpa zea Boddie (Lepidoptera: Noctuidae)

“…To control these pests, farmers mainly use synthetic insecticides of chemical groups such as organophosphates, carbamates, and pyrethroids (Rodríguez and Vendramim, 1996). However, irrational use has resulted in problems like chemical residues in food, biological disequilibrium, intoxication and development of insect resistance (Roel and Vendramim, 2006).…”

“…The search for alternative methods includes the use of natural products that are both effective and less environmentally aggressive, such as plant extracts (Roel and Vendramim, 2006). For Lepidoptera, research has focused on the Meliaceae family with species such as Azadirachta indica A. Juss.…”

“…(Viana et al, 2007), Guarea trichilioides L., Guarea guidonia (L.) Sleumer, Melia azedarach L. (Rodríguez and Vendramim, 1997;De Brito et al, 2004), Trichilia havannensis (Jacq.) (Caballero et al, 2008), and Trichilia pallida Swartz (Roel and Vendramim, 1999;Roel et al, 2000;Roel and Vendramim, 2006). However, in the last few years, there have been studies with plants of other plant families, such as Quassia amara L. (Simaroubaceae) (Mancebo et al, 2000;Souza et al, 2007), Annona cherimola Mill.…”

Toxicity of Boldo Peumus boldus Molina for Sitophilus zeamais Motschulsky and Tribolium castaneum Herbst

“…Synthetic pesticides have been considered to be the most effective and easy to use tools against these insect pests (Huang and Subramanyam, 2005). However, their misuse has caused several problems such as the presence of high or illegal pesticide residues, human intoxication, and development of insect resistance (Roel and Vendramim, 2006).…”

“…The search for alternative methods includes using natural products that are both effective and environmentally friendly, such as botanical insecticides (Roel and Vendramim, 2006). These compounds have been traditionally used in developing countries against stored-grain pests such as Sitophilus weevils (De Oliveira et al, 2003).…”