Carbon and nitrogen content in granulometric fractions of organic matter in soil aggregates under no-tillage and conventional tillage planting systems for onions

Carbon and nitrogen content in granulometric fractions of organic matter in soil aggregates under no-tillage and conventional tillage planting systems for onions

ABSTRACT Carbon (C) and nitrogen (N) content in granulometric fractions of soil organic matter (SOM) are sensitive indicators of soil quality changes caused by management systems. This study evaluated the C and N content in granulometric fractions of SOM of aggregates, an Inceptisol under onion grow...

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Autores principales: dos Santos,Luiz Henrique, Loss,Arcângelo, Canton,Ludiana, Souza,Monique, Ferreira,Guilherme Wilbert, Kurtz,Claudinei, Brunetto,Gustavo, Lourenzi,Cledimar Rogério, Lovato,Paulo-Emílio, Comin,Jucinei-José
Lenguaje:English
Publicado: Universidad de Tarapacá. Facultad de Ciencias Agronómicas 2018
Materias:
Cover crops
intercropping
particulate carbon
particulate nitrogen
Allium cepa
Acceso en línea:http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-34292018000400007
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spelling oai:scielo:S0718-342920180004000072019-04-22Carbon and nitrogen content in granulometric fractions of organic matter in soil aggregates under no-tillage and conventional tillage planting systems for onionsdos Santos,Luiz HenriqueLoss,ArcângeloCanton,LudianaSouza,MoniqueFerreira,Guilherme WilbertKurtz,ClaudineiBrunetto,GustavoLourenzi,Cledimar RogérioLovato,Paulo-EmílioComin,Jucinei-José Cover crops intercropping particulate carbon particulate nitrogen Allium cepa ABSTRACT Carbon (C) and nitrogen (N) content in granulometric fractions of soil organic matter (SOM) are sensitive indicators of soil quality changes caused by management systems. This study evaluated the C and N content in granulometric fractions of SOM of aggregates, an Inceptisol under onion grown in no-till vegetable farming systems (NTVFS) and conventional tillage systems (CTS), comparing them to a secondary forest. Treatments consisted of soil cover crops, monocropped and intercropped with onions grown under NTVFS: spontaneous vegetation, 100% black oats; 100% rye; 100% oilseed radish; oilseed (14%) + rye (86%) intercrop and oilseed (14%) + oats (86%) intercrop. The same evaluations were also performed in an area with onions grown under CTS for ± 37 years, and in secondary forest (± 30 years). Undeformed soil samples were collected from 0-5, 5-10, and 10-20 cm deep soil layers, and aggregates were subsequently separated (8.00 mm > Ø ≥ 2.0 mm). Organic C (OC) and N of the granulometric fractions contents were quantified in aggregates, which were subdivided into particulate fractions (POC and PN) and mineral-associated fractions (OCam and Nam). NTVFS promoted protection of SOM at the 0-5 cm depth compared to CTS, as a result of higher POC content. Intercropped oats+oilseed and spontaneous vegetation contributed to an increase in PN content compared to all other treatments under NTVFS. Monocropped and intercroppped oilseed radish caused an increase in Nam, which was more effective than OCam to indicate differences among the systems. Conversion of areas from CTS to NTVFS promotes increases in POC and PN content in the upper soil layer. NTVFS improves the quality of aggregates, and it may reduce damage caused by CTS.info:eu-repo/semantics/openAccessUniversidad de Tarapacá. Facultad de Ciencias AgronómicasIdesia (Arica) v.36 n.4 20182018-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-34292018000400007en10.4067/S0718-34292018005002001
institution Scielo Chile
collection Scielo Chile
language English
topic Cover crops
intercropping
particulate carbon
particulate nitrogen
Allium cepa
spellingShingle Cover crops
intercropping
particulate carbon
particulate nitrogen
Allium cepa
dos Santos,Luiz Henrique
Loss,Arcângelo
Canton,Ludiana
Souza,Monique
Ferreira,Guilherme Wilbert
Kurtz,Claudinei
Brunetto,Gustavo
Lourenzi,Cledimar Rogério
Lovato,Paulo-Emílio
Comin,Jucinei-José
Carbon and nitrogen content in granulometric fractions of organic matter in soil aggregates under no-tillage and conventional tillage planting systems for onions
description ABSTRACT Carbon (C) and nitrogen (N) content in granulometric fractions of soil organic matter (SOM) are sensitive indicators of soil quality changes caused by management systems. This study evaluated the C and N content in granulometric fractions of SOM of aggregates, an Inceptisol under onion grown in no-till vegetable farming systems (NTVFS) and conventional tillage systems (CTS), comparing them to a secondary forest. Treatments consisted of soil cover crops, monocropped and intercropped with onions grown under NTVFS: spontaneous vegetation, 100% black oats; 100% rye; 100% oilseed radish; oilseed (14%) + rye (86%) intercrop and oilseed (14%) + oats (86%) intercrop. The same evaluations were also performed in an area with onions grown under CTS for ± 37 years, and in secondary forest (± 30 years). Undeformed soil samples were collected from 0-5, 5-10, and 10-20 cm deep soil layers, and aggregates were subsequently separated (8.00 mm > Ø ≥ 2.0 mm). Organic C (OC) and N of the granulometric fractions contents were quantified in aggregates, which were subdivided into particulate fractions (POC and PN) and mineral-associated fractions (OCam and Nam). NTVFS promoted protection of SOM at the 0-5 cm depth compared to CTS, as a result of higher POC content. Intercropped oats+oilseed and spontaneous vegetation contributed to an increase in PN content compared to all other treatments under NTVFS. Monocropped and intercroppped oilseed radish caused an increase in Nam, which was more effective than OCam to indicate differences among the systems. Conversion of areas from CTS to NTVFS promotes increases in POC and PN content in the upper soil layer. NTVFS improves the quality of aggregates, and it may reduce damage caused by CTS.
author dos Santos,Luiz Henrique
Loss,Arcângelo
Canton,Ludiana
Souza,Monique
Ferreira,Guilherme Wilbert
Kurtz,Claudinei
Brunetto,Gustavo
Lourenzi,Cledimar Rogério
Lovato,Paulo-Emílio
Comin,Jucinei-José
author_facet dos Santos,Luiz Henrique
Loss,Arcângelo
Canton,Ludiana
Souza,Monique
Ferreira,Guilherme Wilbert
Kurtz,Claudinei
Brunetto,Gustavo
Lourenzi,Cledimar Rogério
Lovato,Paulo-Emílio
Comin,Jucinei-José
author_sort dos Santos,Luiz Henrique
title Carbon and nitrogen content in granulometric fractions of organic matter in soil aggregates under no-tillage and conventional tillage planting systems for onions
title_short Carbon and nitrogen content in granulometric fractions of organic matter in soil aggregates under no-tillage and conventional tillage planting systems for onions
title_full Carbon and nitrogen content in granulometric fractions of organic matter in soil aggregates under no-tillage and conventional tillage planting systems for onions
title_fullStr Carbon and nitrogen content in granulometric fractions of organic matter in soil aggregates under no-tillage and conventional tillage planting systems for onions
title_full_unstemmed Carbon and nitrogen content in granulometric fractions of organic matter in soil aggregates under no-tillage and conventional tillage planting systems for onions
title_sort carbon and nitrogen content in granulometric fractions of organic matter in soil aggregates under no-tillage and conventional tillage planting systems for onions
publisher Universidad de Tarapacá. Facultad de Ciencias Agronómicas
publishDate 2018
url http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-34292018000400007
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