Yield and nitrate leaching in a rainfed maize crop using swine manure and mineral fertilizer as nitrogen sources

Denise Freitas Silva, Camilo De Lelis Teixeira De Andrade, Alvaro Vilela Resende, Axel Garcia Garcia, Celina Candida Ferreira Rodrigues, Talita Coutinho Teixeira, Tales Antonio Amaral, Jessica Sousa Paixao

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    1 Scopus citations

    Abstract

    Swine Manure (SM) has great potential as fertilizer and can replace part or all of the nitrogen from mineral fertilizer (MF) required in crop production. However, SM also has high potential as contaminant and must be managed properly to avoid environmental pollution. Crop models coupled to decision support systems can be an efficient tool to evaluate alternative strategies for manure management. The goal of this study was to use a simulation approach to evaluate the sustainability of rainfed maize production fertilized with different rates of nitrogen from SM and MF. The SM-CERES-Maize model of the Decision Support System for Agrotechnology Transfer was used to assess the long-term effects of the fertilization strategies on maize yield, nitrogen uptake soil-nitrogen accumulation and nitrate leaching. Nitrogen rates ranging from 100 to 250 kg ha-1 from both SM and MF, by a combination of 50% SM and 50% MF, and the rate of 415 kg ha-1 (60% MF and 40% SM) currently used by the farmer, were simulated. Our results indicate that a rate of 200 kg ha -1 (50% MF and 50% SM), proved to be advantageous as yield increased and the nitrate leaching and soil-nitrogen accumulation were within acceptable levels. Our results also indicated the farmers' rate to be unsustainable due to nitrate leaching and nitrogen accumulation in the soil. Additional strategies, such as using higher proportion of MF at the beginning and then reducing it over time are also discussed.

    Original languageEnglish (US)
    Title of host publicationAmerican Society of Agricultural and Biological Engineers Annual International Meeting 2013, ASABE 2013
    PublisherAmerican Society of Agricultural and Biological Engineers
    Pages2300-2319
    Number of pages20
    ISBN (Print)9781627486651
    StatePublished - Jan 1 2013
    EventAmerican Society of Agricultural and Biological Engineers Annual International Meeting 2013 - Kansas City, MO, United States
    Duration: Jul 21 2013Jul 24 2013

    Publication series

    NameAmerican Society of Agricultural and Biological Engineers Annual International Meeting 2013, ASABE 2013
    Volume3

    Other

    OtherAmerican Society of Agricultural and Biological Engineers Annual International Meeting 2013
    CountryUnited States
    CityKansas City, MO
    Period7/21/137/24/13

    Keywords

    • DSSAT
    • Modeling
    • Pig slurry
    • Sustainability
    • Zea mays L.

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  • Cite this

    Silva, D. F., De Andrade, C. D. L. T., Resende, A. V., Garcia, A. G., Rodrigues, C. C. F., Teixeira, T. C., Amaral, T. A., & Paixao, J. S. (2013). Yield and nitrate leaching in a rainfed maize crop using swine manure and mineral fertilizer as nitrogen sources. In American Society of Agricultural and Biological Engineers Annual International Meeting 2013, ASABE 2013 (pp. 2300-2319). (American Society of Agricultural and Biological Engineers Annual International Meeting 2013, ASABE 2013; Vol. 3). American Society of Agricultural and Biological Engineers.