Data/hora: 04/06/2024 03:20:40

Biblioteca(s): | Embrapa Meio Ambiente.
Data corrente: | 19/11/2019
Data da última atualização: | 19/11/2019
Autoria: | NECHET, K. de L.; HALFELD-VIEIRA, B. de A.
Afiliação: | KATIA DE LIMA NECHET, CNPMA; BERNARDO DE ALMEIDA HALFELD VIEIRA, CNPMA.
Título: | Development of Cercospora leaf spot on Ipomoea weed species for biological control.
Ano de publicação: | 2019
Fonte/Imprenta: | Biocontrol, v. 64, n. 2, p. 185-195, 2019.
ISSN: | 1573-8248
DOI: | https://doi.org/10.1007/s10526-018-09918-w
Idioma: | Inglês
Conteúdo: | Morning glories (Ipomoea spp.) are important weeds in non-burning sugarcane farming in Brazil, and their chemical control has low efficacy due to the straw mulching. The purpose of this work was to determine the effect of epidemiological parameters on the development of Cercospora leaf spot (Cercospora aff. canescens Ellis & G. Martin) on four Ipomoea weed species, as well as on the host range. The results demonstrated that the use of a suspension of 2&#8201;×&#8201;107 conidia ml&#8722;1 on specific host phenological stages (3?5 leaves, open flowers, and with fruit), with a minimum of a 24 h dew period, induces plant defoliation and a higher disease incidence on Ipomoea nil L. (Roth). However, the same disease incidence and defoliation on I. grandifolia (Dammer) O?Donell, I. quamoclit L., and I. hederifolia L. were not achieved. The pathogen was specific to these four Ipomoea species among 18 plant species. These results represent an important step in the development of a mycoherbicide to control morning glories.
Palavras-Chave: | Cercospora aff canescens; Inundative biological control; Morning glories.
Thesagro: | Cercosporiose; Controle Biológico; Erva Daninha; Fungo Para Controle Biológico.
Thesaurus Nal: | Biological control; Cercospora; Ipomoea; Mycoherbicides; Weeds.
Categoria do assunto: | H Saúde e Patologia
Registro original: | Embrapa Meio Ambiente (CNPMA)
Exemplares: | CNPMA - (16500-1) - UPC - AP - DD -  -  -  - DIS