African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6688

Full Length Research Paper

Influence of combined sources of nitrogen fertilization on quality of cv. Vitória pineapple

Ana Lima Dantas
  • Ana Lima Dantas
  • Programa de Pos-Graduacaoem Agronomia, Universidade Federal da Paraíba, Areia-PB, 58.397-000, Brazil.
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Silvanda de Melo Silva
  • Silvanda de Melo Silva
  • Programa de Pos-Graduacaoem Agronomia, Departamento de Ciencias Fundamentais e Sociais, Universidade Federal da Paraiba, Areia-PB, 58.397-000, Brazil
  • Google Scholar
Renato Lima Dantas
  • Renato Lima Dantas
  • Programa de Pos-Graduacaoem Agronomia, Universidade Federal da Paraíba, Areia-PB, 58.397-000, Brazil.
  • Google Scholar
Walter Esfrain Pereira
  • Walter Esfrain Pereira
  • Programa de Pos-Graduacaoem Agronomia, Departamento de Ciencias Fundamentais e Sociais, Universidade Federal da Paraiba, Areia-PB, 58.397-000, Brazil.
  • Google Scholar
Renato Pereira Lima
  • Renato Pereira Lima
  • Programa de Pos-Graduacaoem Agronomia, Universidade Federal da Paraíba, Areia-PB, 58.397-000, Brazil.
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Rejane Maria Nunes Mendonça
  • Rejane Maria Nunes Mendonça
  • Programa Pos-Graduacaoem Agronomia, Departamento de Fitotecnia e Ciencias Ambientais, Universidade Federal da Paraiba, Areia-PB, 58.397-000, Brazil.
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Djail Santos
  • Djail Santos
  • Programa de Pos-Graduacaoem Ciencia do Solo, Departamento de Solos e Engenharia Rural, Universidade Federal da Paraíba, Areia-PB, 58.397-000, Brazil.
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  •  Received: 18 July 2015
  •  Accepted: 10 September 2015
  •  Published: 01 October 2015

Abstract

Vitória pineapple besides surpassing cultivars traditionally consumed in Brazil, such as Pérola and Smooth Cayenne, exhibits resistance to Fusarium. In this sense, nitrogen fertilization is a critical factor because it interferes with the production and postharvest quality regardless of variety. Thus, this research aimed to evaluate the influence of doses and sources of nitrogen on the content of carbohydrates, bioactive compounds and antioxidant activity of Vitória pineapple cultivar. Five doses of N were tested in two sources: Organic (chicken manure) and mineral (urea) using a control with NPK. The lowest doses of N applied (2.62 and 4.50 g/plant) resulted in the contents of total soluble and non-reducing sugars different for the control.Without, the use of 152 g/plant chicken manure resulted in ascorbic acid accumulation. Lower doses of urea resulted in the highest yellow flavonoids, and when combined with chicken manure, it resulted in higher antioxidant activity and ascorbic acid content. Principal components analysis explained 64.7% of variability covering most of the variables analyzed, except for total antioxidant activity by the DPPH method. All together, the use of chicken manure combined with urea was effective in improving the quality of Vitória pineapple at doses of up to 4.5 g N/plant.

 

Key words: Ananascomosus, chicken manure, nitrogen levels, carbohydrates, bioactive compounds, antioxidant activity.