Fauna and microbial attributes of an Ultisol under cover crop systems in the South of Brazil

Authors

  • Denice Oliveira Almeida Centro Universitário União Dinâmica das Cataratas, Rua Castelo Branco, no 349, Centro, CEP 85852-010 Foz do Iguaçu, PR.
  • Cimélio Bayer Universidade Federal do Rio Grande do Sul, Faculdade de Agronomia, Departamento de Solos, Avenida Bento Gonçalves, no 7.712, CEP 91540-000 Porto Alegre, RS.
  • Henrique Cesar Almeida Universidade Federal da Integração Latino-Americana, Instituto Latino Americano de Ciências da Vida e da Natureza, Avenida Tancredo Neves, no 6.731, CEP 85867-970 Foz do Iguaçu, PR.

DOI:

https://doi.org/10.1590/S1678-3921.pab2016.v51.22471

Keywords:

bioindicators, microbial biomass, cover crop intercropping, edaphic organisms, no-tillage, soil quality.

Abstract

The objective of this work was to evaluate, in a long-term experiment, the fauna and microbiological attributes of an Ultisol under no-tillage cover crop. The study was carried out in Eldorado do Sul, RS, Brazil, after 27 years of implantation of an experiment evaluating the following crop systems: O/C, oat/corn; V/C, vetch/corn; OV/C, oat + vetch/corn; OV/CP, oat + vetch/corn + cowpea; and L/M, lablab/corn. A randomized complete block design was used, with three replicates. Samplings of fauna, performed with pitfalls, and of microbiological attributes were done after cover crop management, in spring; during corn crop cycle, in summer; after corn crop harvest, in autumn; and during cover crop cycle, in winter. The inclusion of legume intercropped or in succession to cover crops promoted the occurrence of edaphic fauna and increased microbial biomass C and N, which favored cycling potential and nutrient availability. The O/C cover crop system with grasses favored the Diptera, Hemiptera, and Diplopoda orders. Overall, the best cover crop systems under notillage are those with legume inclusion.

Author Biographies

Denice Oliveira Almeida, Centro Universitário União Dinâmica das Cataratas, Rua Castelo Branco, no 349, Centro, CEP 85852-010 Foz do Iguaçu, PR.

http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4735199Y4

Cimélio Bayer, Universidade Federal do Rio Grande do Sul, Faculdade de Agronomia, Departamento de Solos, Avenida Bento Gonçalves, no 7.712, CEP 91540-000 Porto Alegre, RS.

http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4727995A5

Henrique Cesar Almeida, Universidade Federal da Integração Latino-Americana, Instituto Latino Americano de Ciências da Vida e da Natureza, Avenida Tancredo Neves, no 6.731, CEP 85867-970 Foz do Iguaçu, PR.

http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4189032Z8

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Published

2016-10-17

How to Cite

Almeida, D. O., Bayer, C., & Almeida, H. C. (2016). Fauna and microbial attributes of an Ultisol under cover crop systems in the South of Brazil. Pesquisa Agropecuaria Brasileira, 51(9), 1140–1147. https://doi.org/10.1590/S1678-3921.pab2016.v51.22471

Issue

v.51, n.9, set. 2016: Número Temático O solo como fator de integração entre os componentes ambientais e a produção agropecuária

Section

SOLO E AMBIENTE (TEMÁTICO)