Data/hora: 05/06/2024 07:50:42

Biblioteca(s): | Embrapa Meio Ambiente.
Data corrente: | 08/07/2020
Data da última atualização: | 08/07/2020
Autoria: | FUJINAWA, M. F.; PONTES, N. de C.; BOREL, F. C.; HALFELD-VIEIRA, B. de A.; GOES, A. de; MORANDI, M. A. B.
Afiliação: | MIRIAM FUMIKO FUJINAWA, Instituto Federal Goiano; NADSON DE CARVALHO PONTES, Instituto Federal Goiano; FILIPE CONSTANTINO BOREL, Instituto Federal Goiano; BERNARDO DE ALMEIDA HALFELD VIEIRA, CNPMA; ANTONIO DE GOES, FCAV-Unesp; MARCELO AUGUSTO BOECHAT MORANDI, CNPMA.
Título: | Biological control of gray mold and Myrothecium leaf spot in begonias.
Ano de publicação: | 2020
Fonte/Imprenta: | Crop Protection, v. 133, p. 1-8, article 105138, 2020.
DOI: | https://doi.org/10.1016/j.cropro.2020.105138
Idioma: | Inglês
Conteúdo: | Abstract: The objective of this study is to evaluate the antagonism of Clonostachys rosea LQC62 and Trichoderma asperellum LQC96 for Botrytis cinerea and Myrothecium roridum, which are begonia leaf pathogens, and to evaluate the application of these antagonists in the management of the disease in commercial cultivation. Under controlled in vitro conditions, the production of soluble and volatile compounds was evaluated along with parasitism in paired cultures, competition by colonization in begonia leaf discs, and the effect of the application of the antagonists in the control of gray mold and Myrothecium leaf spot in the commercial cultivation of begonia. Both LQC62 and LQC96 produced soluble compounds in a culture medium that were capable of inhibiting the development of B. cinerea, which was not observed for M. roridum. Both antagonists produced volatile compounds that led to a reduction in the development of the pathogens. There was an overlap of the colonies of the antagonists with those of the pathogens, indicating hyper-parasitic activity. The antagonists colonized the begonia leaf discs, and the application of these antagonists prior to inoculation promoted a reduction in the sporulation of the pathogens of up to 100%. Weekly foliar sprays of LQC62 reduced the incidence of gray mold and of Myrothecium leaf spot.
Palavras-Chave: | Begonia elatior.
Thesagro: | Begônia; Botrytis Cinerea; Controle biológico; Mofo Cinzento; Trichoderma.
Thesaurus Nal: | Biological control; Biological control agents; Clonostachys rosea; Gray mold; Myrothecium roridum; Trichoderma asperellum.
Categoria do assunto: | H Saúde e Patologia
Registro original: | Embrapa Meio Ambiente (CNPMA)
Exemplares: | CNPMA - (16772-1) - UPC - AP - DD -  -  -  - DIS