Blog
About

  • Record: found
  • Abstract: found
  • Article: found
Is Open Access

Corn Stover Harvest Strategy Effects on Grain Yield and Soil Quality Indicators Translated title: Efecto de distintas estrategias de cosecha de rastrojo de maíz sobre el rendimiento en grano e indicadores de la calidad del suelo

Read this article at

Bookmark
      There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

      Abstract

      Developing strategies to collect and use cellulosic biomass for bioenergy production is important because those materials are not used as human food sources. This study compared corn (Zea mays L.) stover harvest strategies on a 50 ha Clarion-Nicollet-Webster soil Association site near Emmetsburg, Iowa, USA. Surface soil samples (0 to 15 cm) were analyzed after each harvest to monitor soil organic carbon (SOC), pH, phosphorus (P) and potassium (K) changes. Grain yields in 2008, before the stover harvest treatments were imposed, averaged 11.4 Mg ha-1. In 2009, 2010, and 2011 grain yields averaged 10.1, 9.7, and 9.5 Mg ha-1, respectively. Although grain yields after stover harvest strategies imposed were lower than in 2008, there were no significant differences among the treatments. Four-year average stover collection rates ranged 1.0 to 5.2 Mg ha-1 which was 12 to 60% of the above-ground biomass. SOC showed a slight decrease during the study, but the change was not related to any specific stover harvest treatment. Instead, we attribute the SOC decline to the tillage intensity and lower than expected crop yields. Overall, these results are consistent with other Midwestern USA studies that indicate corn stover should not be harvested if average grain yields are less than 11 Mg ha-1

      Translated abstract

      El desarrollo de estrategias para utilizar biomasa celulósica para la producción de bioenergía permitiría utilizar recursos que no son fuente de alimento para el ser humano. Este estudio comparó estrategias de cosecha de rastrojo de maíz (Zea mays L.) en 50 ha ubicadas sobre la Asociación de suelos Clarion-Nicollet-Webster cerca de Emmetsburg, Iowa, Estados Unidos. Se analizaron muestras de suelo superficial (0 a 15 cm) después de cada cosecha para monitorear los cambios en el carbono orgánico del suelo (COS), pH, fósforo (P) y potasio ( K ). Los rendimientos de grano en 2008, antes de que se impusieran los tratamientos de cosecha de rastrojo, promediaron 11,4 Mg ha-1. En 2009, 2010 y 2011 los rendimientos de grano promediaron 10,1, 9,7 y 9,5 Mg ha-1, respectivamente. Aunque los rendimientos de grano después de impuestos los tratamientos fueron inferiores a los del 2008, no se encontraron diferencias significativas entre los tratamientos. Las tasas promedio de cuatro años de cosecha de rastrojo variaron entre 1,0 y 5,2 Mg ha- 1, lo que representó del 12 al 60% de la biomasa por encima del suelo. El COS mostró una leve disminución durante el estudio, pero el cambio no estuvo relacionado con los tratamientos de cosecha de rastrojo, sino con la intensidad de labranza y los menores rendimientos del cultivo. En general los resultados son consistentes con otros estudios obtenidos en el medio oeste de Estados Unidos, indicando que el rastrojo del maíz no debe cosecharse si los rendimientos medios de grano son menores a 11 Mg ha-1.

      Related collections

      Most cited references 11

      • Record: found
      • Abstract: not found
      • Article: not found

      Corn Stover to Sustain Soil Organic Carbon Further Constrains Biomass Supply

        Bookmark
        • Record: found
        • Abstract: not found
        • Article: not found

        U.S. Billion-ton update: Biomass supply for a bioenergy and bioproducts industry

         RD Perlack,  BJ Stokes (2011)
          Bookmark
          • Record: found
          • Abstract: not found
          • Article: not found

          Corn stover to sustain soil organic carbon further constrains Biomass supply

          (2007)
            Bookmark

            Author and article information

            Affiliations
            [1 ] USDA USA
            [2 ] Iowa State University (ISU) USA
            [3 ] POET USA
            Contributors
            Role: ND
            Role: ND
            Role: ND
            Journal
            agro
            Agrociencia Uruguay
            Agrociencia Uruguay
            Facultad de Agronomía - Instituto Nacional de Investigación Agropecuaria (Montevideo )
            2301-1548
            December 2013
            : 17
            : 2
            : 131-140
            S2301-15482013000200014

            http://creativecommons.org/licenses/by/4.0/

            Product
            Product Information: SciELO Uruguay
            Categories
            AGRICULTURAL ECONOMICS & POLICY
            AGRICULTURAL ENGINEERING
            AGRICULTURE, DAIRY & ANIMAL SCIENCE
            AGRICULTURE, MULTIDISCIPLINARY
            AGRONOMY

            Comments

            Comment on this article