Nutrient recycling of sorghum straw and soil biological attributes in Eastern Amazon
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Ciência e Agrotecnologia (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542012000500004 |
Resumo: | The microbial biomass and activity are biological indicators sensitive to environmental changes caused by agricultural use and can provide important information for the planning of adequate land use. The objective of this research was to evaluate the nutrient recycling, persistence, and biological attributes of sorghum straw in Oxisol as a function of soil management systems. The experiment was carried out at the Federal Rural University of Amazonia in randomized block design with 3 x 2 factorial and four replicates. Three sorghum hybrids and two soil management systems were the factors used to assess straw decomposition. In order to evaluate the biological attributes, a 2 x 2 factorial experiment with four replicates was carried out using two soil management systems and two sampling dates. Total organic carbon (TOC), carbon in the soil microbial biomass (C-SMB), C-SMB/TOC ratio, basal respiration and metabolic quotient (qCO2) were investigated. The Qualimax hybrid presented the highest C/N ratio (55) and longer straw persistence in soil after 120 days of management (35%). The highest TOC, C-SMB, C-SMB/TOC ratio, and basal respiration and the smallest qCO2 were observed during the rainy season and in the no-till system. |
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Nutrient recycling of sorghum straw and soil biological attributes in Eastern AmazonMicrobial biomassC/N ratioOxisolThe microbial biomass and activity are biological indicators sensitive to environmental changes caused by agricultural use and can provide important information for the planning of adequate land use. The objective of this research was to evaluate the nutrient recycling, persistence, and biological attributes of sorghum straw in Oxisol as a function of soil management systems. The experiment was carried out at the Federal Rural University of Amazonia in randomized block design with 3 x 2 factorial and four replicates. Three sorghum hybrids and two soil management systems were the factors used to assess straw decomposition. In order to evaluate the biological attributes, a 2 x 2 factorial experiment with four replicates was carried out using two soil management systems and two sampling dates. Total organic carbon (TOC), carbon in the soil microbial biomass (C-SMB), C-SMB/TOC ratio, basal respiration and metabolic quotient (qCO2) were investigated. The Qualimax hybrid presented the highest C/N ratio (55) and longer straw persistence in soil after 120 days of management (35%). The highest TOC, C-SMB, C-SMB/TOC ratio, and basal respiration and the smallest qCO2 were observed during the rainy season and in the no-till system.Editora da UFLA2012-10-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542012000500004Ciência e Agrotecnologia v.36 n.5 2012reponame:Ciência e Agrotecnologia (Online)instname:Universidade Federal de Lavras (UFLA)instacron:UFLA10.1590/S1413-70542012000500004info:eu-repo/semantics/openAccessMaia,Patrícia RibeiroFernandes,Antonio RodriguesMelo,Vânia SilvaSantos,Elaine RodriguesSilva,Gisele Barata daeng2012-10-15T00:00:00Zoai:scielo:S1413-70542012000500004Revistahttp://www.scielo.br/cagroPUBhttps://old.scielo.br/oai/scielo-oai.php||renpaiva@dbi.ufla.br|| editora@editora.ufla.br1981-18291413-7054opendoar:2022-11-22T16:31:14.474870Ciência e Agrotecnologia (Online) - Universidade Federal de Lavras (UFLA)true |
dc.title.none.fl_str_mv |
Nutrient recycling of sorghum straw and soil biological attributes in Eastern Amazon |
title |
Nutrient recycling of sorghum straw and soil biological attributes in Eastern Amazon |
spellingShingle |
Nutrient recycling of sorghum straw and soil biological attributes in Eastern Amazon Maia,Patrícia Ribeiro Microbial biomass C/N ratio Oxisol |
title_short |
Nutrient recycling of sorghum straw and soil biological attributes in Eastern Amazon |
title_full |
Nutrient recycling of sorghum straw and soil biological attributes in Eastern Amazon |
title_fullStr |
Nutrient recycling of sorghum straw and soil biological attributes in Eastern Amazon |
title_full_unstemmed |
Nutrient recycling of sorghum straw and soil biological attributes in Eastern Amazon |
title_sort |
Nutrient recycling of sorghum straw and soil biological attributes in Eastern Amazon |
author |
Maia,Patrícia Ribeiro |
author_facet |
Maia,Patrícia Ribeiro Fernandes,Antonio Rodrigues Melo,Vânia Silva Santos,Elaine Rodrigues Silva,Gisele Barata da |
author_role |
author |
author2 |
Fernandes,Antonio Rodrigues Melo,Vânia Silva Santos,Elaine Rodrigues Silva,Gisele Barata da |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Maia,Patrícia Ribeiro Fernandes,Antonio Rodrigues Melo,Vânia Silva Santos,Elaine Rodrigues Silva,Gisele Barata da |
dc.subject.por.fl_str_mv |
Microbial biomass C/N ratio Oxisol |
topic |
Microbial biomass C/N ratio Oxisol |
description |
The microbial biomass and activity are biological indicators sensitive to environmental changes caused by agricultural use and can provide important information for the planning of adequate land use. The objective of this research was to evaluate the nutrient recycling, persistence, and biological attributes of sorghum straw in Oxisol as a function of soil management systems. The experiment was carried out at the Federal Rural University of Amazonia in randomized block design with 3 x 2 factorial and four replicates. Three sorghum hybrids and two soil management systems were the factors used to assess straw decomposition. In order to evaluate the biological attributes, a 2 x 2 factorial experiment with four replicates was carried out using two soil management systems and two sampling dates. Total organic carbon (TOC), carbon in the soil microbial biomass (C-SMB), C-SMB/TOC ratio, basal respiration and metabolic quotient (qCO2) were investigated. The Qualimax hybrid presented the highest C/N ratio (55) and longer straw persistence in soil after 120 days of management (35%). The highest TOC, C-SMB, C-SMB/TOC ratio, and basal respiration and the smallest qCO2 were observed during the rainy season and in the no-till system. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-10-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542012000500004 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542012000500004 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S1413-70542012000500004 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Editora da UFLA |
publisher.none.fl_str_mv |
Editora da UFLA |
dc.source.none.fl_str_mv |
Ciência e Agrotecnologia v.36 n.5 2012 reponame:Ciência e Agrotecnologia (Online) instname:Universidade Federal de Lavras (UFLA) instacron:UFLA |
instname_str |
Universidade Federal de Lavras (UFLA) |
instacron_str |
UFLA |
institution |
UFLA |
reponame_str |
Ciência e Agrotecnologia (Online) |
collection |
Ciência e Agrotecnologia (Online) |
repository.name.fl_str_mv |
Ciência e Agrotecnologia (Online) - Universidade Federal de Lavras (UFLA) |
repository.mail.fl_str_mv |
||renpaiva@dbi.ufla.br|| editora@editora.ufla.br |
_version_ |
1799874969130237952 |