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Soil Efflux of Carbon Dioxide in Brazilian Cerrado Wheat ( Triticum aestivum L.) under Variable Soil Preparation and Irrigation

Author

Listed:
  • Wininton M. da Silva

    (Empresa Mato-Grossense de Pesquisa, Assistência e Extensão Rural (EMPAER-MT), Centro Político Administrativo, Cuiabá 78049-903, MT, Brazil)

  • Aloísio Bianchini

    (Programa de Pós-Graduação em Agricultura Tropical, Universidade Federal de Mato Grosso, Cuiabá 78060-900, MT, Brazil)

  • Ricardo S. S. Amorim

    (Departamento de Engenharia Agrícola, Universidade Federal de Viçosa, Viçosa 36570-900, MG, Brazil)

  • Eduardo G. Couto

    (Programa de Pós-Graduação em Agricultura Tropical, Universidade Federal de Mato Grosso, Cuiabá 78060-900, MT, Brazil)

  • Oscarlina L. dos S. Weber

    (Programa de Pós-Graduação em Agricultura Tropical, Universidade Federal de Mato Grosso, Cuiabá 78060-900, MT, Brazil)

  • Aaron Kinyu Hoshide

    (College of Natural Sciences, Forestry and Agriculture, The University of Maine, Orono, ME 04469, USA)

  • Pedro S. X. Pereira

    (Programa de Pós-Graduação em Agricultura Tropical, Universidade Federal de Mato Grosso, Cuiabá 78060-900, MT, Brazil)

  • Cassiano Cremon

    (Department of Agronomy, Universidade do Estado de Mato Grosso, Rua São João, s/n., Caceres 78216-596, MT, Brazil)

  • Daniel C. de Abreu

    (AgriSciences, Universidade Federal de Mato Grosso, Caixa Postal 729, Sinop 78550-970, MT, Brazil
    Instituto de Ciências Agrárias e Ambientais, Campus Universitário de Sinop, Universidade Federal de Mato Grosso, Avenida Alexandre Ferronato, 1200, Sinop 78555-267, MT, Brazil)

Abstract

Soil turning during pre-seeding preparation is meant to loosen and promote physical characteristics responsible for the development of crop roots in soil. In this study, we demonstrate effects of three methods of pre-seeding preparation at two depths of irrigation on carbon dioxide (CO 2 ) efflux as well as the temporal variability in the distribution of soil carbon. This experiment was conducted at the rural cooperative extension research station in Tangará da Serra, Mato Grosso, Brazil, for two wheat production years in 2011 and 2012. The experimental design was randomized in strips, with four repetitions. Wheat was irrigated during the June to early October dry season. The treatments include two methods of soil preparation: traditional preparation with one plowing and two disc harrowings and minimal preparation with one seed bed conditioner pass. A third treatment of direct seeding was also evaluated. Soil CO 2 efflux, soil temperature, air-filled soil porosity, and labile carbon were measured. We found soil preparation affects CO 2 efflux in irrigated cultivation systems within Brazil’s Cerrado savannah, with conventional tillage having greater CO 2 emissions than either reduced tillage or direct seeding. Soil CO 2 emissions were lower at 508 mm versus 698 mm irrigation depth, but wheat yields were significantly lower.

Suggested Citation

  • Wininton M. da Silva & Aloísio Bianchini & Ricardo S. S. Amorim & Eduardo G. Couto & Oscarlina L. dos S. Weber & Aaron Kinyu Hoshide & Pedro S. X. Pereira & Cassiano Cremon & Daniel C. de Abreu, 2022. "Soil Efflux of Carbon Dioxide in Brazilian Cerrado Wheat ( Triticum aestivum L.) under Variable Soil Preparation and Irrigation," Agriculture, MDPI, vol. 12(2), pages 1-14, January.
    • Handle: RePEc:gam:jagris:v:12:y:2022:i:2:p:163-:d:732317
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    Citations

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    Cited by:

    1. Aline Kraeski & Frederico Terra de Almeida & Adilson Pacheco de Souza & Tania Maria de Carvalho & Daniel Carneiro de Abreu & Aaron Kinyu Hoshide & Cornélio Alberto Zolin, 2023. "Land Use Changes in the Teles Pires River Basin’s Amazon and Cerrado Biomes, Brazil, 1986–2020," Sustainability, MDPI, vol. 15(5), pages 1-26, March.

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