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

Soil physical attributes under different grazing management of winter forage crops in crop-livestock system at Southern Brazil

Jeferson Tiago Piano
  • Jeferson Tiago Piano
  • Programa de Pós-Graduação em Agronomia (PPGA), Universidade Estadual do Oeste do Paraná ? UNIOESTE. Rua Pernambuco, 1777, Centro, CEP: 85960-000, CP: 1008. Marechal Cândido Rondon-PR, Brazil.
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Paulo Sérgio Rabello de Oliveira
  • Paulo Sérgio Rabello de Oliveira
  • Programa de Pós-Graduação em Agronomia (PPGA), Universidade Estadual do Oeste do Paraná ? UNIOESTE. Rua Pernambuco, 1777, Centro, CEP: 85960-000, CP: 1008. Marechal Cândido Rondon-PR, Brazil.
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Poliana Ferreira da Costa
  • Poliana Ferreira da Costa
  • Faculdade de Ciências Exatas e Tecnologia, Doutorado em Ciência e Tecnologia Ambiental - Universidade Federal da Grande Dourados. Rodovia Dourados/Itahum, Km 12. CEP: 79.804-970, CP: 364. Dourados-MS, Brazil.
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Loreno Egídio Taffarel
  • Loreno Egídio Taffarel
  • Programa de Pós-Graduação em Agronomia (PPGA), Universidade Estadual do Oeste do Paraná ? UNIOESTE. Rua Pernambuco, 1777, Centro, CEP: 85960-000, CP: 1008. Marechal Cândido Rondon-PR, Brazil.
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Jonas Francisco Egewarth
  • Jonas Francisco Egewarth
  • Programa de Pós-Graduação em Agronomia (PPGA), Universidade Estadual do Oeste do Paraná ? UNIOESTE. Rua Pernambuco, 1777, Centro, CEP: 85960-000, CP: 1008. Marechal Cândido Rondon-PR, Brazil.
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Edleusa Pereira Seidel
  • Edleusa Pereira Seidel
  • Programa de Pós-Graduação em Agronomia (PPGA), Universidade Estadual do Oeste do Paraná ? UNIOESTE. Rua Pernambuco, 1777, Centro, CEP: 85960-000, CP: 1008. Marechal Cândido Rondon-PR, Brazil.
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Deise Dalazen Castagnara
  • Deise Dalazen Castagnara
  • Curso de Medicina Veterinária, Universidade Federal do Pampa - Unipampa. BR 472 - Km 592, Centro, CEP: 97.501-970, CP: 118. Uruguaiana-RS, Brazil.
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  •  Received: 24 June 2014
  •  Accepted: 09 September 2014
  •  Published: 15 January 2015

Abstract

The effects of different species and grazing management of winter forage crops on the physical properties of a clayey Red Latosol of the western region of Parana State under crop-livestock integration systems were investigated in the present study. Treatments consisted of three different winter crops [white oat (Avena sativa), dual-purpose wheat (Triticum aestivum) and triticale (X Tritico secale)] and three grazing management (one and two grazing with 15 cm of residue height, and without grazing), followed by soybean cultivation, in a randomized block design. Undisturbed soil samples were collected at 0.00-0.10 and 0.10-0.20 m depths, after the winter crops harvest (October/2012) and soybean harvest (March/2013) and was determined the soil bulk density until 0.35 cm depth. The soil macroporosity in the 0.00-0.10 and 0.10-0.20 m soil layers and the total soil porosity in the 0.10-0.20 m layer, after winter crops harvest, were influenced by the crops and management of winter forage. In the evaluation performed after the soybean harvest, there were changes in the soil macroporosity in the 0.0-0.10 m layer and for microporosity and total soil porosity in the 0.10-0.20 m soil layer. The soil bulk density was not affected by the crops and management of winter forage. The different species and grazing management of winter crops in integrated crop-livestock systems promoted changes in soil penetration resistance in the 0.20-0.30 m soil layer. The cultivation of white oat during winter and management with two grazing resulted in lower soil penetration resistance levels.

 

Key words: Physical quality, soil structure, soil penetration resistance, conservation cropping systems.