African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6576

Full Length Research Paper

Phosphorus fractionation in sediments of the ypacarai lake basin

Diego Algusto Fois Fatecha
  • Diego Algusto Fois Fatecha
  • State University of West Paraná - UNIOESTE, Marechal Cândido Rondon – Paraná – Brazil, street Pernambuco, Number 1777, Box: 91, Center, Brazil.
  • Google Scholar
Jimmy Walter Rasche Alvarez
  • Jimmy Walter Rasche Alvarez
  • National University of Asuncion college of agricultural sciences FCA – San Lorenzo –Paraguay, street Marechal. Estigarribia Km 11, Number 1780, Box: 1680, Paraguay.
  • Google Scholar
Nestor Cabral
  • Nestor Cabral
  • National University of Asuncion college of agricultural sciences FCA – San Lorenzo –Paraguay, street Marechal. Estigarribia Km 11, Number 1780, Box: 1680, Paraguay.
  • Google Scholar
Jazmin Guadalupe Ojeda Rojas
  • Jazmin Guadalupe Ojeda Rojas
  • National University of Asuncion college of agricultural sciences FCA – San Lorenzo –Paraguay, street Marechal. Estigarribia Km 11, Number 1780, Box: 1680, Paraguay.
  • Google Scholar
Jessica Caroline Coppo
  • Jessica Caroline Coppo
  • 1State University of West Paraná - UNIOESTE, Marechal Cândido Rondon – Paraná – Brazil, street Pernambuco, Number 1777, Box: 91, Center, Brazil.
  • Google Scholar
Alfredo Jose Alves Neto
  • Alfredo Jose Alves Neto
  • 1State University of West Paraná - UNIOESTE, Marechal Cândido Rondon – Paraná – Brazil, street Pernambuco, Number 1777, Box: 91, Center, Brazil.
  • Google Scholar
Eloisa Lorenzetti*
  • Eloisa Lorenzetti*
  • 1State University of West Paraná - UNIOESTE, Marechal Cândido Rondon – Paraná – Brazil, street Pernambuco, Number 1777, Box: 91, Center, Brazil.
  • Google Scholar
Cesar Kent Hoshiba Watanake
  • Cesar Kent Hoshiba Watanake
  • 1State University of West Paraná - UNIOESTE, Marechal Cândido Rondon – Paraná – Brazil, street Pernambuco, Number 1777, Box: 91, Center, Brazil.
  • Google Scholar
Bruna Broti Rissato
  • Bruna Broti Rissato
  • 1State University of West Paraná - UNIOESTE, Marechal Cândido Rondon – Paraná – Brazil, street Pernambuco, Number 1777, Box: 91, Center, Brazil.
  • Google Scholar
Cristiani Belmonte
  • Cristiani Belmonte
  • 1State University of West Paraná - UNIOESTE, Marechal Cândido Rondon – Paraná – Brazil, street Pernambuco, Number 1777, Box: 91, Center, Brazil.
  • Google Scholar


  •  Received: 28 June 2016
  •  Accepted: 03 August 2016
  •  Published: 01 September 2016

Abstract

The aim of this paper was to determine the phosphorus fractions in the sediment, at different points of the tributaries, on the lake, and on the Ypacarai lake basin. There was a collection of 23 bottom sediment (SF) samples of 0 to 0.05 m of tributaries of the Ypacarai lake basin and 10 samples from the lake. The sand, silt and clay fractions and textural class were determined; in addition to the P forms, grouped in labile, moderately labile and nonlabile. The bottom sediments of the tributaries and of the lake presented scarce clay content, predominantly containing sand on the textural class. There is a greater amount of phosphorus in every evaluated fraction in the fine sediment of the tributaries than in the sediment of the lake. The greatest fractions of moderately labile phosphorus were obtained from the lake, presenting values considered to be adequate in the tributaries. However, in the tributaries, the determinations showed hagh variability between the points which run through densely populated regions, being that the three forms labile, moderately labile and nonlabile were found distributed in equal parts.

Key words: Available phosphorus, eutrophication, environmental contamination, erosion.