Sampling representativeness of soil carbon and physiological parameters of marandu palisadegrass in a tropical silvopastoral system

Detalhes bibliográficos
Autor(a) principal: Oliveira, Jaqueline de Cássia de
Data de Publicação: 2021
Outros Autores: Azevedo, Alcinei Místico, Ribeiro, Juliana Martins, Freitas, Igor Costa, Dias, Rafael Ferreira, Duarte, Ana Clara Santos, Melo, Paula Franciele, Veloso, Álvaro Luís, Frazão, Leidivan Almeida
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Scientia Agrícola (Online)
Texto Completo: https://www.revistas.usp.br/sa/article/view/184664
Resumo: The sampling methods for soil and plant evaluation in integrated production systems need to be refined for their use in experiments. This study purposed a sampling representativeness model to evaluate soil carbon and physiological parameters of marandu palisadegrass intercropped with double rows of eucalyptus in a silvopastoral system in southeastern Brazil. Four transects were delimited within the silvopastoral system and the soil was sampled at 0-5, 5-10, and 10- 20 cm depths to evaluate two parameters of soil organic matter: total organic carbon (TOC) and soil microbial carbon (Cmic). We also evaluated three physiological parameters of marandu palisadegrass: stomatal conductance, transpiration rate, and photosynthetic rate. The sampling strategy was evaluated by the Hatheway and Modified Maximum Curvature (MMC) methods. We found that cultivation of the alley with forage grass and double rows of eucalyptus must be considered to ensure sampling representativeness in a silvopastoral system, once TOC and Cmic and physiological parameters showed variation within the integrated production system. The MMC method could be useful to evaluate silvopastoral systems for experiments and characterization of agricultural areas, as 11 soil samples are representative to evaluate Cmic and TOC, and 13 samples are enough to evaluate the physiological parameters in marandu palisadegrass. The Hatheway method could be applied to experiments that need higher accuracy with a reduction in the minimum difference to be detected between the treatments and a consequent increase in the number of samples to be collected.
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spelling Sampling representativeness of soil carbon and physiological parameters of marandu palisadegrass in a tropical silvopastoral systemEucalyptusMMC methodHatheway methodforage grasssoil samplingThe sampling methods for soil and plant evaluation in integrated production systems need to be refined for their use in experiments. This study purposed a sampling representativeness model to evaluate soil carbon and physiological parameters of marandu palisadegrass intercropped with double rows of eucalyptus in a silvopastoral system in southeastern Brazil. Four transects were delimited within the silvopastoral system and the soil was sampled at 0-5, 5-10, and 10- 20 cm depths to evaluate two parameters of soil organic matter: total organic carbon (TOC) and soil microbial carbon (Cmic). We also evaluated three physiological parameters of marandu palisadegrass: stomatal conductance, transpiration rate, and photosynthetic rate. The sampling strategy was evaluated by the Hatheway and Modified Maximum Curvature (MMC) methods. We found that cultivation of the alley with forage grass and double rows of eucalyptus must be considered to ensure sampling representativeness in a silvopastoral system, once TOC and Cmic and physiological parameters showed variation within the integrated production system. The MMC method could be useful to evaluate silvopastoral systems for experiments and characterization of agricultural areas, as 11 soil samples are representative to evaluate Cmic and TOC, and 13 samples are enough to evaluate the physiological parameters in marandu palisadegrass. The Hatheway method could be applied to experiments that need higher accuracy with a reduction in the minimum difference to be detected between the treatments and a consequent increase in the number of samples to be collected.Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz2021-04-22info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://www.revistas.usp.br/sa/article/view/18466410.1590/1678-992X-2020-0176Scientia Agricola; v. 78 n. Supl. 1 (2021); e20200176Scientia Agricola; Vol. 78 Núm. Supl. 1 (2021); e20200176Scientia Agricola; Vol. 78 No. Supl. 1 (2021); e202001761678-992X0103-9016reponame:Scientia Agrícola (Online)instname:Universidade de São Paulo (USP)instacron:USPenghttps://www.revistas.usp.br/sa/article/view/184664/170843Copyright (c) 2021 Scientia Agricolahttp://creativecommons.org/licenses/by-nc/4.0info:eu-repo/semantics/openAccessOliveira, Jaqueline de Cássia de Azevedo, Alcinei Místico Ribeiro, Juliana Martins Freitas, Igor Costa Dias, Rafael Ferreira Duarte, Ana Clara Santos Melo, Paula Franciele Veloso, Álvaro Luís Frazão, Leidivan Almeida 2021-04-22T15:04:08Zoai:revistas.usp.br:article/184664Revistahttp://revistas.usp.br/sa/indexPUBhttps://old.scielo.br/oai/scielo-oai.phpscientia@usp.br||alleoni@usp.br1678-992X0103-9016opendoar:2021-04-22T15:04:08Scientia Agrícola (Online) - Universidade de São Paulo (USP)false
dc.title.none.fl_str_mv Sampling representativeness of soil carbon and physiological parameters of marandu palisadegrass in a tropical silvopastoral system
title Sampling representativeness of soil carbon and physiological parameters of marandu palisadegrass in a tropical silvopastoral system
spellingShingle Sampling representativeness of soil carbon and physiological parameters of marandu palisadegrass in a tropical silvopastoral system
Oliveira, Jaqueline de Cássia de
Eucalyptus
MMC method
Hatheway method
forage grass
soil sampling
title_short Sampling representativeness of soil carbon and physiological parameters of marandu palisadegrass in a tropical silvopastoral system
title_full Sampling representativeness of soil carbon and physiological parameters of marandu palisadegrass in a tropical silvopastoral system
title_fullStr Sampling representativeness of soil carbon and physiological parameters of marandu palisadegrass in a tropical silvopastoral system
title_full_unstemmed Sampling representativeness of soil carbon and physiological parameters of marandu palisadegrass in a tropical silvopastoral system
title_sort Sampling representativeness of soil carbon and physiological parameters of marandu palisadegrass in a tropical silvopastoral system
author Oliveira, Jaqueline de Cássia de
author_facet Oliveira, Jaqueline de Cássia de
Azevedo, Alcinei Místico
Ribeiro, Juliana Martins
Freitas, Igor Costa
Dias, Rafael Ferreira
Duarte, Ana Clara Santos
Melo, Paula Franciele
Veloso, Álvaro Luís
Frazão, Leidivan Almeida
author_role author
author2 Azevedo, Alcinei Místico
Ribeiro, Juliana Martins
Freitas, Igor Costa
Dias, Rafael Ferreira
Duarte, Ana Clara Santos
Melo, Paula Franciele
Veloso, Álvaro Luís
Frazão, Leidivan Almeida
author2_role author
author
author
author
author
author
author
author
dc.contributor.author.fl_str_mv Oliveira, Jaqueline de Cássia de
Azevedo, Alcinei Místico
Ribeiro, Juliana Martins
Freitas, Igor Costa
Dias, Rafael Ferreira
Duarte, Ana Clara Santos
Melo, Paula Franciele
Veloso, Álvaro Luís
Frazão, Leidivan Almeida
dc.subject.por.fl_str_mv Eucalyptus
MMC method
Hatheway method
forage grass
soil sampling
topic Eucalyptus
MMC method
Hatheway method
forage grass
soil sampling
description The sampling methods for soil and plant evaluation in integrated production systems need to be refined for their use in experiments. This study purposed a sampling representativeness model to evaluate soil carbon and physiological parameters of marandu palisadegrass intercropped with double rows of eucalyptus in a silvopastoral system in southeastern Brazil. Four transects were delimited within the silvopastoral system and the soil was sampled at 0-5, 5-10, and 10- 20 cm depths to evaluate two parameters of soil organic matter: total organic carbon (TOC) and soil microbial carbon (Cmic). We also evaluated three physiological parameters of marandu palisadegrass: stomatal conductance, transpiration rate, and photosynthetic rate. The sampling strategy was evaluated by the Hatheway and Modified Maximum Curvature (MMC) methods. We found that cultivation of the alley with forage grass and double rows of eucalyptus must be considered to ensure sampling representativeness in a silvopastoral system, once TOC and Cmic and physiological parameters showed variation within the integrated production system. The MMC method could be useful to evaluate silvopastoral systems for experiments and characterization of agricultural areas, as 11 soil samples are representative to evaluate Cmic and TOC, and 13 samples are enough to evaluate the physiological parameters in marandu palisadegrass. The Hatheway method could be applied to experiments that need higher accuracy with a reduction in the minimum difference to be detected between the treatments and a consequent increase in the number of samples to be collected.
publishDate 2021
dc.date.none.fl_str_mv 2021-04-22
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://www.revistas.usp.br/sa/article/view/184664
10.1590/1678-992X-2020-0176
url https://www.revistas.usp.br/sa/article/view/184664
identifier_str_mv 10.1590/1678-992X-2020-0176
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://www.revistas.usp.br/sa/article/view/184664/170843
dc.rights.driver.fl_str_mv Copyright (c) 2021 Scientia Agricola
http://creativecommons.org/licenses/by-nc/4.0
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Copyright (c) 2021 Scientia Agricola
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 Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz
publisher.none.fl_str_mv Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz
dc.source.none.fl_str_mv Scientia Agricola; v. 78 n. Supl. 1 (2021); e20200176
Scientia Agricola; Vol. 78 Núm. Supl. 1 (2021); e20200176
Scientia Agricola; Vol. 78 No. Supl. 1 (2021); e20200176
1678-992X
0103-9016
reponame:Scientia Agrícola (Online)
instname:Universidade de São Paulo (USP)
instacron:USP
instname_str Universidade de São Paulo (USP)
instacron_str USP
institution USP
reponame_str Scientia Agrícola (Online)
collection Scientia Agrícola (Online)
repository.name.fl_str_mv Scientia Agrícola (Online) - Universidade de São Paulo (USP)
repository.mail.fl_str_mv scientia@usp.br||alleoni@usp.br
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