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

New substrates for the cultivation of Pleurotus ostreatus using exhausted compost

Otavio Augusto Pessotto Alves Siqueira
  • Otavio Augusto Pessotto Alves Siqueira
  • Universidade do Sagrado Coração, USC, Cento de Ciências Exatas e Sociais Aplicadas. Rua Irmã Arminda 10-50 – Jardim Brasil, 17011-160 Bauru, SP, Brasil.
  • Google Scholar
André Ricardo Zanon
  • André Ricardo Zanon
  • Universidade do Sagrado Coração, USC, Cento de Ciências Exatas e Sociais Aplicadas. Rua Irmã Arminda 10-50 – Jardim Brasil, 17011-160 Bauru, SP, Brasil.
  • Google Scholar
Olívia Gomes Martins
  • Olívia Gomes Martins
  • Universidade do Sagrado Coração, USC, Cento de Ciências Exatas e Sociais Aplicadas. Rua Irmã Arminda 10-50 – Jardim Brasil, 17011-160 Bauru, SP, Brasil.
  • Google Scholar
Meire Cristina Nogueira De Andrade
  • Meire Cristina Nogueira De Andrade
  • Universidade do Sagrado Coração, USC, Cento de Ciências Exatas e Sociais Aplicadas. Rua Irmã Arminda 10-50 – Jardim Brasil, 17011-160 Bauru, SP, Brasil.
  • Google Scholar


  •  Received: 16 March 2016
  •  Accepted: 02 June 2016
  •  Published: 30 June 2016

Abstract

Several materials have been used in the cultivation of the edible mushroom Pleurotus ostreatus. However, little is known about the reuse of the exhausted compost. This study evaluated the utilization of used substrates. Four formulations of composts were evaluated: C1 with no exhausted compost, and C2, C3 and C4 with 26, 45 and 64% of exhausted compost, respectively. Loss of organic matter, biological efficiency and mass of basidiomata were evaluated by means of the results of the chemical analysis of the initial and final composts and the nutritional assessment of the basidiomata. The data obtained were submitted to statistical analysis. The results of the chemical analysis of the composts show an increase of nitrogen between the initial and the exhausted compost and a decrease of the carbon/nitrogen ratio. The loss of organic matter and biological efficiency of composts C2, C3 and C4 were lower than the traditional compost. The mass of fresh basidiomata of composts 1 and 2 were not significantly different, being superior to other treatments. Treatment C3 showed a higher amount of protein. The conclusion was that the exhausted compost can be reused up to a certain amount without affecting the production and the nutritional value.

Key words: Residues, utilization, productivity, mushrooms.