Data/hora: 03/06/2024 15:33:33

Biblioteca(s): | Embrapa Semiárido; Embrapa Unidades Centrais.
Data corrente: | 22/03/2017
Data da última atualização: | 29/03/2017
Autoria: | GADAGA, S. J. C.; ABREU, M. S. de; RESENDE, M. L. V. de; RIBEIRO JUNIOR, P. M.
Afiliação: | STÉLIO JORGE CASTRO GADAGA, Universidade Federal de Lavras; MÁRIO SOBRAL DE ABREU, Universidade Federal de Lavras; MÁRIO LÚCIO VILELA DE RESENDE, Universidade Federal de Lavras; PEDRO MARTINS RIBEIRO JUNIOR, CPATSA.
Título: | Phosphites for the control of anthracnose in common bean.
Ano de publicação: | 2017
Fonte/Imprenta: | Pesquisa Agropecuária Brasileira, Brasília, DF, v. 52, n. 1, p. 36-44, jan. 2017.
DOI: | 10.1590/S0100-204X2017000100005
Idioma: | Inglês
Conteúdo: | The objective of this work was to evaluate the effect of phosphites in the protection of common bean (Phaseolus vulgaris) against anthracnose. Different phosphite formulations were evaluated by quantifying peroxidase and polyphenol oxidase activity, total phenols, and lignin content. The treatments consisted of sprayings, in the V4, R5, and R7 stages, with: the K, Zn, Mn, K+Mn, K+salicyclic acid, and Cu phosphites; salicylic acid; acibenzolar-S-methyl; and the fungicide azoxystrobin; besides a control, without sprayings. The area under the disease progress curve was lower in plants that received applications of the K and Mn phosphites, whose values ranged between 74 and 81%, compared with the control. The K, Zn, and K+salicyilic acid phosphites were effective in controlling the disease. In addition, disease severity was lower with the application of the K, Zn, and Mn phosphites than with the control. Enzyme (peroxidases and polyphenol oxidases) activity and levels of soluble phenols were higher in common bean plants treated with the K and Mn phosphites, although no change was detected in the levels of soluble lignin in the same tissue. Phosphite application reduces the severity of the disease, can enhance enzymatic activity, and is an effective alternative for the control of anthracnose in common bean.
Palavras-Chave: | Alternative control; Colletotrichum limdemuthianum; Compostos fenólicos; Controle alternativo; Deonça; Enzymatic activity.
Thesagro: | Antracnose; Atividade Enzimática; Feijão; Phaseolus Vulgaris.
Thesaurus Nal: | Phenolic compounds.
Categoria do assunto: | A Sistemas de Cultivo
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/157991/1/Pedro-2017.pdf
Registro original: | Embrapa Semiárido (CPATSA)

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CPATSA - (56529-1) - UPC - AP - PP -  -  -  - DIS
AI-SEDE - (61035-1) - UPE - AP - PP - 630.72081 - P474 -  - DIS