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Impacts of crop rotational diversity and grazing under integrated crop-livestock system on soil surface greenhouse gas fluxes

Integrated crop-livestock (ICL) system is beneficial in enhancing soil organic carbon and nutrient cycling. However, the benefits of the ICL system on mitigation of GHG emissions are poorly understood. Thus, the present study was initiated in 2011 to assess the effect of crop rotation diversity and...

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Autores principales: Abagandura, Gandura Omar, Şentürklü, Songul, Singh, Navdeep, Kumar, Sandeep, Landblom, Douglas G., Ringwall, Kris
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6530893/
https://www.ncbi.nlm.nih.gov/pubmed/31116765
http://dx.doi.org/10.1371/journal.pone.0217069
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author Abagandura, Gandura Omar
Şentürklü, Songul
Singh, Navdeep
Kumar, Sandeep
Landblom, Douglas G.
Ringwall, Kris
author_facet Abagandura, Gandura Omar
Şentürklü, Songul
Singh, Navdeep
Kumar, Sandeep
Landblom, Douglas G.
Ringwall, Kris
author_sort Abagandura, Gandura Omar
collection PubMed
description Integrated crop-livestock (ICL) system is beneficial in enhancing soil organic carbon and nutrient cycling. However, the benefits of the ICL system on mitigation of GHG emissions are poorly understood. Thus, the present study was initiated in 2011 to assess the effect of crop rotation diversity and grazing managed under the ICL system on GHG emissions. The cropping system investigated here included spring wheat grown continuously for five years and a 5-yr crop rotation (spring wheat-cover crops-corn-pea/barley-sunflower). Each phase was present each year. Yearling steers grazed only the pea/barley, corn and cover crops plots in 2016 and 2017. Exclusion areas avoided the grazing in these crops to compare the GHG fluxes under grazed vs. non-grazed areas. The GHG fluxes were measured weekly from all crop phases during the growing season for both years using a static chamber. Cumulative CO(2) and CH(4) fluxes were similar from all crop phases over the study period. However, continuous spring wheat recorded higher cumulative N(2)O fluxes (671 g N ha(-1)) than that under spring wheat in rotation (571 g N ha(-1)). Grazing decreased cumulative CO(2) fluxes (359 kg C ha(-1)) compared to ungrazed (409 kg C ha(-1)), however, no effect from grazing on cumulative CH(4) and N(2)O fluxes over the study period were found. The present study shows that grazing and crop rotational diversity affected carbon and nitrogen inputs, which in turn affected soil CO(2) and N(2)O fluxes. Long-term monitoring is needed to evaluate the response of soil GHG emissions to grazing and crop rotation interactions under the ICL system.
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spelling pubmed-65308932019-05-31 Impacts of crop rotational diversity and grazing under integrated crop-livestock system on soil surface greenhouse gas fluxes Abagandura, Gandura Omar Şentürklü, Songul Singh, Navdeep Kumar, Sandeep Landblom, Douglas G. Ringwall, Kris PLoS One Research Article Integrated crop-livestock (ICL) system is beneficial in enhancing soil organic carbon and nutrient cycling. However, the benefits of the ICL system on mitigation of GHG emissions are poorly understood. Thus, the present study was initiated in 2011 to assess the effect of crop rotation diversity and grazing managed under the ICL system on GHG emissions. The cropping system investigated here included spring wheat grown continuously for five years and a 5-yr crop rotation (spring wheat-cover crops-corn-pea/barley-sunflower). Each phase was present each year. Yearling steers grazed only the pea/barley, corn and cover crops plots in 2016 and 2017. Exclusion areas avoided the grazing in these crops to compare the GHG fluxes under grazed vs. non-grazed areas. The GHG fluxes were measured weekly from all crop phases during the growing season for both years using a static chamber. Cumulative CO(2) and CH(4) fluxes were similar from all crop phases over the study period. However, continuous spring wheat recorded higher cumulative N(2)O fluxes (671 g N ha(-1)) than that under spring wheat in rotation (571 g N ha(-1)). Grazing decreased cumulative CO(2) fluxes (359 kg C ha(-1)) compared to ungrazed (409 kg C ha(-1)), however, no effect from grazing on cumulative CH(4) and N(2)O fluxes over the study period were found. The present study shows that grazing and crop rotational diversity affected carbon and nitrogen inputs, which in turn affected soil CO(2) and N(2)O fluxes. Long-term monitoring is needed to evaluate the response of soil GHG emissions to grazing and crop rotation interactions under the ICL system. Public Library of Science 2019-05-22 /pmc/articles/PMC6530893/ /pubmed/31116765 http://dx.doi.org/10.1371/journal.pone.0217069 Text en © 2019 Abagandura et al http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Research Article
Abagandura, Gandura Omar
Şentürklü, Songul
Singh, Navdeep
Kumar, Sandeep
Landblom, Douglas G.
Ringwall, Kris
Impacts of crop rotational diversity and grazing under integrated crop-livestock system on soil surface greenhouse gas fluxes
title Impacts of crop rotational diversity and grazing under integrated crop-livestock system on soil surface greenhouse gas fluxes
title_full Impacts of crop rotational diversity and grazing under integrated crop-livestock system on soil surface greenhouse gas fluxes
title_fullStr Impacts of crop rotational diversity and grazing under integrated crop-livestock system on soil surface greenhouse gas fluxes
title_full_unstemmed Impacts of crop rotational diversity and grazing under integrated crop-livestock system on soil surface greenhouse gas fluxes
title_short Impacts of crop rotational diversity and grazing under integrated crop-livestock system on soil surface greenhouse gas fluxes
title_sort impacts of crop rotational diversity and grazing under integrated crop-livestock system on soil surface greenhouse gas fluxes
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6530893/
https://www.ncbi.nlm.nih.gov/pubmed/31116765
http://dx.doi.org/10.1371/journal.pone.0217069
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