Changes in microbiological attributes of a red latosol under different cropping systems
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Semina. Ciências Agrárias (Online) |
Texto Completo: | https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/30009 |
Resumo: | The objective of this study was to evaluate changes in microbiological attributes of soils under different growing systems. Three cropping systems were evaluated (1) no-tillage system (NTS); (2) conventional tillage system (CTS); and (3) newly scarified no-tillage system (SNTS). The three systems were maintained for 20 years. In addition, a primary forest (PF) fragment was used as a reference. Soil samples were collected at depths of 0.0-0.1 m, 0.1-0.2 m, and 0.2-0.3 m. The following variables were measured: microbial biomass carbon (MBC); soil respirometry (RESP) using the fumigation and incubation method; microbial biomass nitrogen (MBN) using fumigation and extraction; metabolic quotient (qCO2) using the RESP-MBC ratio; and number of spores (NS) of mycorrhizal fungi by plate counting of spores extracted from the soil by wet sieving. Treatments were arranged in a completely randomized block design with five replicates. The different management systems affected the soil microbiota, especially in the superficial layer of 0.0-0.1 m. At a depth of 0.0-0.2 m, the PF presented significantly higher values for all analyzed attributes, except for NS. There were no significant differences in the studied characteristics between the NTS and SNTS at the three depths, indicating that scarification performed only once in the NTS was not sufficient to produce changes in soil microbiological attributes. However, the adoption of the CTS for 20 years promoted a decrease in MBC and MBN. RESP and NS were not significantly different between the cropping systems. Principal component analysis indicated a significant difference in microbiological characteristics between the PF and the areas under management. Therefore, different growing systems change the soil microbiota, and the lower the degree of tilling (NTS and SNTS), the smaller the changes in soil microbiological attributes. Soil preparation practices used in conventional tilling negatively affect soil microbial biomass, decreasing the levels of MBC and MBN. |
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Changes in microbiological attributes of a red latosol under different cropping systemsAlterações dos atributos microbiológicos em um Latossolo Vermelho sob diferentes sistemas de manejoConventional tillageMicrobial carbonMetabolic quotientMycorrhizaeNo-tillage.Plantio convencionalCarbono microbianoQuociente metabólicoMicorrizasPlantio direto.The objective of this study was to evaluate changes in microbiological attributes of soils under different growing systems. Three cropping systems were evaluated (1) no-tillage system (NTS); (2) conventional tillage system (CTS); and (3) newly scarified no-tillage system (SNTS). The three systems were maintained for 20 years. In addition, a primary forest (PF) fragment was used as a reference. Soil samples were collected at depths of 0.0-0.1 m, 0.1-0.2 m, and 0.2-0.3 m. The following variables were measured: microbial biomass carbon (MBC); soil respirometry (RESP) using the fumigation and incubation method; microbial biomass nitrogen (MBN) using fumigation and extraction; metabolic quotient (qCO2) using the RESP-MBC ratio; and number of spores (NS) of mycorrhizal fungi by plate counting of spores extracted from the soil by wet sieving. Treatments were arranged in a completely randomized block design with five replicates. The different management systems affected the soil microbiota, especially in the superficial layer of 0.0-0.1 m. At a depth of 0.0-0.2 m, the PF presented significantly higher values for all analyzed attributes, except for NS. There were no significant differences in the studied characteristics between the NTS and SNTS at the three depths, indicating that scarification performed only once in the NTS was not sufficient to produce changes in soil microbiological attributes. However, the adoption of the CTS for 20 years promoted a decrease in MBC and MBN. RESP and NS were not significantly different between the cropping systems. Principal component analysis indicated a significant difference in microbiological characteristics between the PF and the areas under management. Therefore, different growing systems change the soil microbiota, and the lower the degree of tilling (NTS and SNTS), the smaller the changes in soil microbiological attributes. Soil preparation practices used in conventional tilling negatively affect soil microbial biomass, decreasing the levels of MBC and MBN.O objetivo deste trabalho foi avaliar alterações nos atributos microbiológicos do solo em diferentes sistemas de manejo. Avaliou-se três tipos de manejo de solo (1) sistema de plantio direto -SPD; (2) plantio convencional - PC, ambos estabelecidos a 20 anos e (3) sistema de plantio direto de 20 anos recém escarificado - SPDE. Além desses, um fragmento de floresta primária (FP) foi usado como referência. Amostras de solo foram coletadas nas profundidades de 0,0 - 0,1; 0,1 - 0,2 e 0,2 - 0,3 m e determinados o carbono da biomassa microbiana (CBM) e a respirometria do solo (RESP) pelo método da fumigação e incubação, o nitrogênio da biomassa microbiana (NBM) determinado por fumigação e extração, o quociente metabólico (qCO2) pela razão entre RESP/CBM, e o número de esporos de fungos micorrízicos (nESP) por contagem em placa sob microscópio dos esporos extraídos do solo por peneiramento úmido. Os dados foram analisados como delineamento inteiramente ao acaso com cinco repetições. Os diferentes manejos influenciaram a microbiota do solo, destacadamente na camada superficial de solo 0,0 - 0,1 m. Na profundidade de 0,0 - 0,2 m a FP observou-se valores significativamente maiores para todos os atributos analisados, exceto nESP. O SPD e SPDE não diferiram nas profundidades para nenhum dos atributos, mostrando que a escarificação realizada apenas uma vez no SPD, não foi suficiente para produzir alterações sobre os atributos microbiológicos do solo. Entretanto, o manejo do solo em PC por 20 anos promoveu reduções no CBM e NBM. A RESP não se diferenciou entre os manejos, assim como o nESP. Na análise de componentes principais houve evidente distância, em termos de atributos microbiológicos, entre a FP e as áreas sob manejo. Conclui-se que os diferentes manejos de solo alteram a microbiota, sendo que, quanto menor a intensidade do manejo (SPD e SPDE) menores são as alterações nos atributos microbiológicos do solo. As práticas de preparo do solo usadas no plantio convencional alteram negativamente a biomassa microbiana do solo, causando reduções no CBM e NBM.UEL2018-05-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionPesquisa aplicada; Manejo do Solo agrícolaPesquisa aplicada; Pesquisa agrícolaapplication/pdfhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/3000910.5433/1679-0359.2018v39n3p971Semina: Ciências Agrárias; Vol. 39 No. 3 (2018); 971-982Semina: Ciências Agrárias; v. 39 n. 3 (2018); 971-9821679-03591676-546Xreponame:Semina. Ciências Agrárias (Online)instname:Universidade Estadual de Londrina (UEL)instacron:UELenghttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/30009/23534Copyright (c) 2018 Semina: Ciências Agráriashttp://creativecommons.org/licenses/by-nc/4.0info:eu-repo/semantics/openAccessNavroski, DeisiMoreira, AdônisGuimarães, Maria de FátimaColozzi Filho, Arnaldo2022-10-20T20:33:45Zoai:ojs.pkp.sfu.ca:article/30009Revistahttp://www.uel.br/revistas/uel/index.php/semagrariasPUBhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/oaisemina.agrarias@uel.br1679-03591676-546Xopendoar:2022-10-20T20:33:45Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)false |
dc.title.none.fl_str_mv |
Changes in microbiological attributes of a red latosol under different cropping systems Alterações dos atributos microbiológicos em um Latossolo Vermelho sob diferentes sistemas de manejo |
title |
Changes in microbiological attributes of a red latosol under different cropping systems |
spellingShingle |
Changes in microbiological attributes of a red latosol under different cropping systems Navroski, Deisi Conventional tillage Microbial carbon Metabolic quotient Mycorrhizae No-tillage. Plantio convencional Carbono microbiano Quociente metabólico Micorrizas Plantio direto. |
title_short |
Changes in microbiological attributes of a red latosol under different cropping systems |
title_full |
Changes in microbiological attributes of a red latosol under different cropping systems |
title_fullStr |
Changes in microbiological attributes of a red latosol under different cropping systems |
title_full_unstemmed |
Changes in microbiological attributes of a red latosol under different cropping systems |
title_sort |
Changes in microbiological attributes of a red latosol under different cropping systems |
author |
Navroski, Deisi |
author_facet |
Navroski, Deisi Moreira, Adônis Guimarães, Maria de Fátima Colozzi Filho, Arnaldo |
author_role |
author |
author2 |
Moreira, Adônis Guimarães, Maria de Fátima Colozzi Filho, Arnaldo |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Navroski, Deisi Moreira, Adônis Guimarães, Maria de Fátima Colozzi Filho, Arnaldo |
dc.subject.por.fl_str_mv |
Conventional tillage Microbial carbon Metabolic quotient Mycorrhizae No-tillage. Plantio convencional Carbono microbiano Quociente metabólico Micorrizas Plantio direto. |
topic |
Conventional tillage Microbial carbon Metabolic quotient Mycorrhizae No-tillage. Plantio convencional Carbono microbiano Quociente metabólico Micorrizas Plantio direto. |
description |
The objective of this study was to evaluate changes in microbiological attributes of soils under different growing systems. Three cropping systems were evaluated (1) no-tillage system (NTS); (2) conventional tillage system (CTS); and (3) newly scarified no-tillage system (SNTS). The three systems were maintained for 20 years. In addition, a primary forest (PF) fragment was used as a reference. Soil samples were collected at depths of 0.0-0.1 m, 0.1-0.2 m, and 0.2-0.3 m. The following variables were measured: microbial biomass carbon (MBC); soil respirometry (RESP) using the fumigation and incubation method; microbial biomass nitrogen (MBN) using fumigation and extraction; metabolic quotient (qCO2) using the RESP-MBC ratio; and number of spores (NS) of mycorrhizal fungi by plate counting of spores extracted from the soil by wet sieving. Treatments were arranged in a completely randomized block design with five replicates. The different management systems affected the soil microbiota, especially in the superficial layer of 0.0-0.1 m. At a depth of 0.0-0.2 m, the PF presented significantly higher values for all analyzed attributes, except for NS. There were no significant differences in the studied characteristics between the NTS and SNTS at the three depths, indicating that scarification performed only once in the NTS was not sufficient to produce changes in soil microbiological attributes. However, the adoption of the CTS for 20 years promoted a decrease in MBC and MBN. RESP and NS were not significantly different between the cropping systems. Principal component analysis indicated a significant difference in microbiological characteristics between the PF and the areas under management. Therefore, different growing systems change the soil microbiota, and the lower the degree of tilling (NTS and SNTS), the smaller the changes in soil microbiological attributes. Soil preparation practices used in conventional tilling negatively affect soil microbial biomass, decreasing the levels of MBC and MBN. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-05-04 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Pesquisa aplicada; Manejo do Solo agrícola Pesquisa aplicada; Pesquisa agrícola |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/30009 10.5433/1679-0359.2018v39n3p971 |
url |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/30009 |
identifier_str_mv |
10.5433/1679-0359.2018v39n3p971 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/30009/23534 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2018 Semina: Ciências Agrárias http://creativecommons.org/licenses/by-nc/4.0 info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2018 Semina: Ciências Agrárias http://creativecommons.org/licenses/by-nc/4.0 |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
UEL |
publisher.none.fl_str_mv |
UEL |
dc.source.none.fl_str_mv |
Semina: Ciências Agrárias; Vol. 39 No. 3 (2018); 971-982 Semina: Ciências Agrárias; v. 39 n. 3 (2018); 971-982 1679-0359 1676-546X reponame:Semina. Ciências Agrárias (Online) instname:Universidade Estadual de Londrina (UEL) instacron:UEL |
instname_str |
Universidade Estadual de Londrina (UEL) |
instacron_str |
UEL |
institution |
UEL |
reponame_str |
Semina. Ciências Agrárias (Online) |
collection |
Semina. Ciências Agrárias (Online) |
repository.name.fl_str_mv |
Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL) |
repository.mail.fl_str_mv |
semina.agrarias@uel.br |
_version_ |
1799306078271307776 |