Data/hora: 04/06/2024 09:19:36

Biblioteca(s): | Embrapa Milho e Sorgo.
Data corrente: | 21/03/2023
Data da última atualização: | 22/06/2023
Autoria: | LEITE, N. A.; REDAELLI, L. R.; ASSIS, L. de S.; MENDES, S. M.; SILVA, A. F. da.
Afiliação: | NATÁLIA ALVES LEITE, Universidade Federal do Rio Grande do Sul; LUIZA RODRIGUES REDAELLI, Universidade Federal do Rio Grande do Sul; LARISSA SOUZA DE ASSIS, Universidade Federal do Rio Grande do Sul; SIMONE MARTINS MENDES, CNPMS; ALEXANDRE FERREIRA DA SILVA, CNPMS.
Título: | The role of glyphosate-resistant weeds and starvation on biological, reproductive, and preference parameters of Chrysodeixis includens (Lepidoptera: Noctuidae).
Ano de publicação: | 2023
Fonte/Imprenta: | Bulletin of Entomological Research, v. 113, n. 2, p. 220-229, 2023.
DOI: | https://doi.org/10.1017/S0007485322000487
Idioma: | Inglês
Conteúdo: | Glyphosate-resistant weeds are difficult to manage and can serve as hosts for pests that threaten cultivated crops. Chrysodeixis includens (Walker) (Lepidoptera: Noctuidae) is one of the main polyphagous pests of soybean in Brazil that can benefit from weeds' presence during season and off-season. Despite its pest status, little is known about C. includens survival and development on alternative hosts, including those resistant to glyphosate. Therefore, we assessed the biology, reproduction, preference, and survival at different feeding periods of C. includens on seven glyphosate-resistant weeds (Sumatran fleabane, Italian ryegrass, sourgrass, goosegrass, smooth pigweed, wild poinsettia, hairy beggarticks) commonly found in Brazilian agroecosystems, under laboratory conditions. Our results showed that C. includens survival and reproduction were similar on soybean and wild poinsettia. Survival and reproduction were lower on smooth pigweed and hairy beggarticks. Also, these plants prolonged the larval stage. Larvae did not pupate when fed on sourgrass, goosegrass, Italian ryegrass, and Sumatran fleabane. However, on Sumatran fleabane their biomass was higher. The mean generation time was lower on wild poinsettia. This weed was preferred to soybean. An antifeeding factor was observed on Sumatran fleabane. Larvae fed for 11 days on soybean, wild poinsettia and smooth pigweed developed into pupae. In agricultural systems, farmers must pay attention to the management of these weeds, especially wild poinsettia, smooth pigweed, and hairy beggarticks, to interrupt the cycle of this pest, since these plants can serve as main sources of infestation for the soybean crop.
Palavras-Chave: | Glifosato; Planta daninha; Ponte verde.
Thesagro: | Erva Daninha; Plantio Direto; Soja.
Categoria do assunto: | F Plantas e Produtos de Origem Vegetal
Registro original: | Embrapa Milho e Sorgo (CNPMS)
Exemplares: | CNPMS - (30055-1) - UPC - AP - DD -  -  -  - DIS