Microbiological and structural quality of Oxisol under pasture renewal systems

Authors

  • Denise Prevedel Capristo Universidade Federal da Grande Dourados, Dourados, MS, Brasil. https://orcid.org/0000-0001-8906-3726
  • Gessí Ceccon Empresa Brasileira de Pesquisa Agropecuária (Embrapa Agropecuária Oeste), Dourados, MS, Brasil. https://orcid.org/0000-0003-2489-8954
  • Ricardo Fachinelli Universidade Federal da Grande Dourados, Dourados, MS, Brasil.
  • Michely Tomazi Empresa Brasileira de Pesquisa Agropecuária (Embrapa Agropecuária Oeste), Dourados, MS, Brasil.

Abstract

The central Brazilian Savanna biome, known as Cerrado, has a vast area of pastures affected by some degree of degradation, where one of the main challenges is incorporating these areas into a crop production system. This study aimed to evaluate the effect of pasture renewal systems on the microbiological and structural quality of a medium-texture Oxisol. A randomized blocks design was adopted, with four replications and eight pasture renewal systems: 1) soybean/off-season maize/soybean; 2) soybean/maize-grass intercropping/soybean; 3) grass for 10 months and then one soybean crop; 4) grass + rattlepod for 10 months and then one soybean crop; 5) grass for 13 months and then one soybean crop; 6) grass + rattlepod for 13 months and then one soybean crop; 7) one soybean crop; 8) original pasture (control). The microbiological quality was assessed based on soil microbial biomass carbon, soil microbial activity, microbial metabolic quotient - qCO2 and activity of the β-glucosidase enzyme; and the structural quality based on the soil structural quality index. The implementation of pasture renewal systems with grass as a single crop (systems 3 and 5) or intercropped with rattlepod (systems 4 and 6) improves the soil microbiological and structural quality. The pasture renewal system beginning with soybean/off-season maize succession (system 1) is not indicated for the medium-texture soil evaluated in this study.

KEYWORDS: Rapid soil structure diagnosis, β-glucosidase, soil microbial biomass.

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Published

2021-08-17

How to Cite

CAPRISTO, D. P.; CECCON, G.; FACHINELLI, R.; TOMAZI, M. Microbiological and structural quality of Oxisol under pasture renewal systems. Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics], Goiânia, v. 51, p. e68006, 2021. Disponível em: https://revistas.ufg.br/pat/article/view/68006. Acesso em: 23 nov. 2024.

Issue

Vol. 51 (2021)

Section

Research Article

License

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