Corn yield response to nitrogen fertilizer following winter cover crops in no-till system

Authors

  • Carla Maria Pandolfo Epagri/Estação Experimental de Campos Novos
    • Milton da Veiga Epagri/Estação Experimental de Campos Novos
      • Angelo Mendes Massignam Epagri/Estação Experimental de Campos Novos

        DOI:

        https://doi.org/10.52945/rac.v19i3.949

        Keywords:

        black oat, rye, oilseed radish, common vetch, nitrogen, corn

        Abstract

        Corn is highly responsive in yield to nitrogen (N) supply, but winter cover crops cultivated before
        could affect this response. The objectives of this study were to evaluate the corn response to N fertilization, when cultivated after black oat (Avena strigosa), rye (Secale cereale), common vetch (Vicia sativa) and oilseed radish (Rhaphanus sativus) in recently implanted no-till system, and to determine the N doses to the maximum technical
        efficiency (MTE) and maximum economical efficiency (MEE). A combination of N doses at sowing (zero, 20, 40 and 80kg/ha) and top-dressing (zero, 20, 40 and 80kg/ha) was applied. Corn grain yield was related to the total N applied independently of the winter cover crop. The maximum technical efficiency was at 138, 128, 131 and 161kg/ha of N, and the maximum economical efficiency was at the 117, 108, 97 and 120kg/ha of N, respectively, to black
        oat, rye, common vetch and oilseed radish.



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        Published

        2006-05-27

        Issue

        Vol. 19 No. 3 (2006)

        Section

        Scientific article

        License

        Copyright (c) 2006 Agropecuaria catarinense

        Creative Commons License

        This work is licensed under a Creative Commons Attribution 4.0 International License.

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        How to Cite

        Corn yield response to nitrogen fertilizer following winter cover crops in no-till system. (2006). Agropecuária Catarinense Journal, 19(3), 79-83. https://doi.org/10.52945/rac.v19i3.949