African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6574

Full Length Research Paper

Effect of phosphorus fertilization on yield and quality of onion bulbs

Jose Novo Junior
  • Jose Novo Junior
  • Post-Graduation Program in Agronomy, Universidade Federal Rural do Semi-Árido, City of Mossoró, State of Rio Grande do Norte, Brazil.
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Rayanne Maria Paula Ribeiro
  • Rayanne Maria Paula Ribeiro
  • Post-Graduation Program in Agronomy, Universidade Federal Rural do Semi-Árido, City of Mossoró, State of Rio Grande do Norte, Brazil.
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Aridenia Peixoto Chaves
  • Aridenia Peixoto Chaves
  • Post-Graduation Program in Agronomy, Universidade Federal Rural do Semi-Árido, City of Mossoró, State of Rio Grande do Norte, Brazil.
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Valdivia de Fatima Lima Sousa
  • Valdivia de Fatima Lima Sousa
  • Post-Graduation Program in Agronomy, Universidade Federal Rural do Semi-Árido, City of Mossoró, State of Rio Grande do Norte, Brazil.
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Leilson Costa Grangeiro
  • Leilson Costa Grangeiro
  • Department of Plant Sciences, Universidade Federal Rural do Semi-Árido, city of Mossoró, State of Rio Grande do Norte, Brazil.
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Maria Zuleide de Negreiros
  • Maria Zuleide de Negreiros
  • Department of Plant Sciences, Universidade Federal Rural do Semi-Árido, city of Mossoró, State of Rio Grande do Norte, Brazil.
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Saulo de Tarcio Pereira Marrocos
  • Saulo de Tarcio Pereira Marrocos
  • Instituto Federal de Educação, Ciência e Tecnologia do Amapá, Campus Porto Grande, city of Macapá, State of Amapá, Brazil.
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Gardenia Silvana Oliveira Rodrigues
  • Gardenia Silvana Oliveira Rodrigues
  • University Mater Christi, city of Mossoró, State of Rio Grande do Norte, Brazil.
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  •  Received: 15 August 2016
  •  Accepted: 31 October 2016
  •  Published: 10 November 2016

Abstract

Obtaining information about the onion responses to different doses of phosphorus can contribute to optimizing the use of fertilizers and consequently make the activity more profitable with less impact on the environment. Therefore, this study aimed to evaluate the effects of different phosphorus doses on yield and quality of onion bulbs. The design of the experiment was in a randomized block design with four replications. The treatments were seven phosphorus doses 0.00; 33.75; 67.50; 101.25; 135.00 and 168.75 kg ha-1 P2O5. The application of 168.75 kg ha-1 of P2O5 provided the maximum yield commercial of bulbs, gross income, net income, rate of return and profitability rate in onion crops. However, there was no effect on the quality of the bulbs.

 

Key words: Allium cepa L., plant nutrition, fertigation, phosphate fertilizer, pungency.