Data/hora: 02/06/2024 05:27:58

Biblioteca(s): | Embrapa Semiárido.
Data corrente: | 28/11/2018
Data da última atualização: | 11/02/2019
Autoria: | SILVA JÚNIOR, M. B. da; POZZA, E. A.; RESENDE, M. L. V.; RIBEIRO JUNIOR, P. M.; COSTA, B. H. G.; CARVALHO, C. A.; RESENDE, A. R. M.; BOTELHOS, D. M. dos.
Afiliação: | MANOEL BATISTA DA SILVA JÚNIOR; EDSON A. POZZA; MÁRIO L. V. RESENDE; PEDRO MARTINS RIBEIRO JUNIOR, CPATSA; BRUNO H. G. COSTA; CAMILA A. CARVALHO; ALEXANDRE R. M. RESENDE; DEILA MAGNA DOS SANTOS BOTELHO.
Título: | Foliar fertilizers for the management of phoma leaf spot on coffee seedlings.
Ano de publicação: | 2018
Fonte/Imprenta: | Journal of Phytopathology, v. 166, n, 10, p. 686-693, oct. 2018.
DOI: | 10.1111/jph.12745
Idioma: | Inglês
Conteúdo: | The growing demand for alternative strategies for plant disease management has sought a reduction in the use of fungicides via the employment of resistance inducers and foliar fertilizers, among others. Therefore, this study aimed at evaluating the following foliar fertilizers for the management of phoma leaf spot: a foliar fertilizer based on macro-and micronutrients (Fmm: 10% N, 4% S, B, 5% Fe and 5% Zn); one based on cobalt and molybdenum (Fcm: 2% Co and 3% Mo); manganese phosphite (FMn: 30% P2O5 and 9% Mn); and the FMn+Fmm, Fcm+Fmm and FMn+Fcm+Fmm associations compared to a boscalid fungicide and a control with no treatment. The disease severity, the chlorophyll a and b contents, the net photosynthetic rate (LPR), the phenylalanine ammonia lyase (PAL) activity and the lignin content in leaves were assessment. Based on the severity, the area under the disease severity progress curve (AUSPC) and the efficiency of disease control in relation to untreated plants were calculated. The experimental design was in randomized blocks with eight treatments and three replications. Treatments FMn+Fmm and Fcm were the most effective in reducing the AUPSC in comparison with the control and promoted an increased activity of PAL. FMn was the treatment that promoted the highest increase in the LPR. There were no effects of the treatments on the lignin content compared to the control.
Palavras-Chave: | Controle alternativo.
Thesagro: | Café; Doença; Nutriente; Phoma.
Thesaurus Nal: | Coffea arabica var. arabica; Plant diseases and disorders.
Categoria do assunto: | F Plantas e Produtos de Origem Vegetal
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/192172/1/Pedro-2018.pdf
Registro original: | Embrapa Semiárido (CPATSA)
Exemplares: | CPATSA - (57800-1) - UPC - AP - DD -  -  -  - DIS