TITLE:
Evaluation of Insecticides Targeting Control of Helicoverpa armigera (Hubner) (Lepidoptera: Noctuidae)
AUTHORS:
Eliane Carneiro, Luciana Barboza Silva, Kellen Maggioni, Vilmar Buenos dos Santos, Thiago Ferreira Rodrigues, Soislan Souza Reis, Bruno Ettore Pavan
KEYWORDS:
Bollworm, Bioassay, Chemical Control, Insecticides, Soybeans
JOURNAL NAME:
American Journal of Plant Sciences,
Vol.5 No.18,
August
28,
2014
ABSTRACT: Insecticides from different chemical groups were tested by laboratory
bioassay to verify the percentage mortality of Helicoverpa armigera (Hubner 1808) (Lepidoptera: Noctuidae). The
experiment was conducted in the Crop Science laboratory—Prof. CinobelinaElvas
Campus—UFPI, Bom Jesus, PI, from January to June, 2013. The populations utilized
came from the University’s own insect breeding laboratories. Third instar
larvae of H. armigera were used to
conduct the bioassay. The experimental design was fully randomized, with 13
treatments and four replications. Five larvae were used per replication, with
12 insecticides from 9 different chemical groups and a control. Each treatment
consisted of three doses. The methods of application used were topical contact
and ingestion in artificial diet. According to the results the percentage
mortality of H. armigera larvae
varied among the treatments. The results demonstrated that chlorpyrifos and
spinosad were effective against third instar H. armigera larvae both on contact and by ingestion. Flubendiamide,
acephate, methomyl, Bacillus
thuringiensis, dimethoate, chlorantraniliprole and fipronil had good
responses to control of H. armigera.