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

Effects of cover crops in the dynamics of organic matter and potassium in the soil and performance of common bean in the Brazilian Cerrado of Goiás State

Cleiton Mateus Sousa
  • Cleiton Mateus Sousa
  • Federal Goiano Institute – Câmpus Ceres. Rod. GO 154, km 03. Ceres, GO 76300-000, Brazil.
  • Google Scholar
Cleber Luiz de Souza
  • Cleber Luiz de Souza
  • Federal Goiano Institute – Câmpus Ceres. Rod. GO 154, km 03. Ceres, GO 76300-000, Brazil.
  • Google Scholar
Marcos Paulo dos Santos
  • Marcos Paulo dos Santos
  • Federal Goiano Institute – Câmpus Ceres. Rod. GO 154, km 03. Ceres, GO 76300-000, Brazil.
  • Google Scholar
Ana Paula Santos Oliveira
  • Ana Paula Santos Oliveira
  • Federal Goiano Institute – Câmpus Ceres. Rod. GO 154, km 03. Ceres, GO 76300-000, Brazil.
  • Google Scholar


  •  Received: 20 December 2015
  •  Accepted: 17 March 2016
  •  Published: 21 April 2016

Abstract

The effects of several cover crops on common bean cv. Pérola productivity cropped at Goiano – Ceres Campus (Brazil) and changes in soil organic matter and potassium were evaluated for one season. The experiment was based on a randomized complete blocks design encompassing four treatments (spontaneous vegetation, Crotalaria spectabilis L., Mucuna aterrima L. and Pennisetum glaucum) and four replications. Soil cover by cover crops was assessed 40 days after sowing (DAS). Manure was applied at 25 DAS at a rate of 250 kg ha-1 with a NPK formulation 20-00-20.Cover crops increased soil cover by approximately 170% when compared with the natural vegetation. Plant residues and manure also led to changes in the soil organic matter and potassium during the common bean growth cycle. Apparently, the Mucuna aterrima L. favored mostly the bean productivity and increased the organic matter and potassium in the soil.

Key words: Green manuring, manure, organic matter, Phaseolus vulgaris, potassium