Data/hora: 20/06/2024 08:11:15

Biblioteca(s): | Embrapa Mandioca e Fruticultura.
Data corrente: | 28/10/2015
Data da última atualização: | 18/05/2023
Autoria: | FREITAS, A. S.; POZZA, E. A.; POZZA, A. A. A.; OLIVEIRA, M. G. F.; SILVA, H. R.; ROCHA, H. S.; GALVÃO, L. R.
Afiliação: | A. S. FREITAS, UFLA; E. A. POZZA, UFLA; A. A. A. POZZA, UFLA; M. G. F. OLIVEIRA, UFLA; H. R. SILVA, UFLA; HERMINIO SOUZA ROCHA, CNPMF; L. R. GALVÃO, UFLA.
Título: | Impact of nutritional deficiency on Yellow Sigatoka of banana.
Ano de publicação: | 2015
Fonte/Imprenta: | Australasian Plant Pathology, August 2015.
ISSN: | 0815-3191
Idioma: | Inglês
Conteúdo: | The objective of this work was to assess the incidence of Yellow Sigatoka in banana plants cultivated with deficiencies of nitrogen, phosphorus, potassium, calcium, magnesium, sulfur or boron. The experimental design was a randomized complete block with 8 treatments, 4 repetitions and 1 plant per repetition. The treatments were supplied in solution culture and consisted of all the nutrients (control) or nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg), sulphur (S) or boron (B) deficiency. Leaves 1 and 2 were inoculated on the abaxial surface with a suspension of conidia and assessed every 5 days to with a total of 5 assessments. The average number of lesions were integrated for the area under the disease progress curve (AUDPC). The greatest AUDPC occurred in plants deficiente in K, N, P, S, or Mg. Plants deficient in N, P, K, Ca, Mg, S or B had lower leaf contents of these nutrients and showed morphological changes expressed in visual deficiency symptoms. Thus, banana plants deficient in K, N, P, S or Mg had a greater incidence of Yellow Sigatoka, compared with plants with full nutrients and plants deficient Ca or B.
Thesagro: | Banana.
Categoria do assunto: | --
Registro original: | Embrapa Mandioca e Fruticultura (CNPMF)
Exemplares: | CNPMF - (30888-1) - UPC - AP - DD - Publicação digital -  -  - DIS