Spatial variability of soil acidity attributes and the spatialization of liming requirement for corn

Detalhes bibliográficos
Autor(a) principal: Hurtado, Sandro Manuel Carmelino
Data de Publicação: 2009
Outros Autores: Silva, Carlos Alberto, Resende, Álvaro Vilela de, Von Pinho, Renzo Garcia, Inácio, Euzelina dos Santos Borges, Higashikawa, Fábio Satoshi
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFLA
Texto Completo: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542009000500022
http://repositorio.ufla.br/jspui/handle/1/7034
Resumo: In Brazil, technicians, in most cases, ignore the aspects related to the spatial variability of the soil acidity attributes when liming requirement is calculated. The objective of this study was to validate the liming practice, evaluating the presence of spatial variability of the soil acidity attributes and the existence of areas with differentiated liming requirement, which were calculated by different methods. The experiment was carried out in an area cultivated with corn under conventional management and irrigation. The soil (0-0.2 m) was sampled in a conventional way (composite soil sample) and in a systematic scheme, by use of a grid sampling. In sequence to the soil fertility attributes analysis, it was calculated the liming requirement, according to the methods of SMP pH, aluminum neutralization and elevation of soil Ca and Mg levels, and increase of the soil base saturation. After the descriptive analysis of the data set was accomplished, the semivariograms were calculated and the maps were obtained through the kriging technique. Absence of spatial dependence, as well as the non necessity of limestone application, was observed for the Al neutralization calculation method. Spatial dependence was only verified for the soil acidity attributes and to the liming requirement calculated by the base saturation and SMP pH methods; for these two methods, the semivariogram ranges obtained varied from 35.7 to 200.5 m. The results have highlighted the existence of differentiated liming requirement zones when the variability of the soil acidity attributes was considered in the calculation of the dose and type of limestone to be used for corn soil acidity correction.
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spelling Spatial variability of soil acidity attributes and the spatialization of liming requirement for cornVariabilidade espacial de atributos de acidez do solo e espacialização da necessidade de calagem para o milhoLiming of soilsGeology - Statistical methodsAgriculture - Statistical methodsCalagem dos solosGeologia - Métodos estatísticosAgricultura - Métodos estatísticosIn Brazil, technicians, in most cases, ignore the aspects related to the spatial variability of the soil acidity attributes when liming requirement is calculated. The objective of this study was to validate the liming practice, evaluating the presence of spatial variability of the soil acidity attributes and the existence of areas with differentiated liming requirement, which were calculated by different methods. The experiment was carried out in an area cultivated with corn under conventional management and irrigation. The soil (0-0.2 m) was sampled in a conventional way (composite soil sample) and in a systematic scheme, by use of a grid sampling. In sequence to the soil fertility attributes analysis, it was calculated the liming requirement, according to the methods of SMP pH, aluminum neutralization and elevation of soil Ca and Mg levels, and increase of the soil base saturation. After the descriptive analysis of the data set was accomplished, the semivariograms were calculated and the maps were obtained through the kriging technique. Absence of spatial dependence, as well as the non necessity of limestone application, was observed for the Al neutralization calculation method. Spatial dependence was only verified for the soil acidity attributes and to the liming requirement calculated by the base saturation and SMP pH methods; for these two methods, the semivariogram ranges obtained varied from 35.7 to 200.5 m. The results have highlighted the existence of differentiated liming requirement zones when the variability of the soil acidity attributes was considered in the calculation of the dose and type of limestone to be used for corn soil acidity correction.No Brasil, a prática de calagem desconsidera, na maioria das vezes, os aspectos relacionados à variabilidade espacial dos atributos de acidez do solo. Objetivou-se, neste estudo, validar a prática da calagem, avaliando a presença de variabilidade espacial de atributos de acidez do solo e a existência de áreas com necessidades diferenciadas de corretivo, por meio de diferentes métodos de cálculo da necessidade de calagem. O experimento foi realizado em lavoura de milho sob manejo convencional. O solo foi amostrado de forma convencional (amostra composta) e sistemática (mediante uso de grade amostral), na profundidade de 0-0,2 m. Posteriormente à análise de fertilidade de rotina, determinaram-se as necessidades de calagem segundo os métodos do tampão SMP, da neutralização de alumínio e elevação do Ca e Mg, e da saturação por bases. Após análise descritiva, foram obtidos os semivariogramas e os mapas por krigagem. Ausência de dependência espacial, assim como da necessidade de aplicação do corretivo calcário foram observadas para o método da neutralização de Al. A dependência espacial foi encontrada para os atributos de acidez do solo e para as necessidades de calagem calculadas pelos métodos de saturação por bases e pH SMP, com alcances variando entre 35,7 e 200,5 m. Esses últimos mostraram também, uma coincidência regionalizada entre as maiores demandas de calcário. Os resultados permitiram evidenciar a existência de zonas de aplicação de calcário diferenciadas, quando consideradas a variabilidade dos atributos de acidez do solo no cálculo espacializado da dose e o tipo de corretivo calcário a ser utilizado.Editora da Universidade Federal de Lavras2009-10-012015-04-30T13:35:23Z2015-04-30T13:35:23Z2015-04-30info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articletext/htmlhttp://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542009000500022HURTADO, S. M. C. et al. Spatial variability of soil acidity attributes and the spatialization of liming requirement for corn. Ciência e Agrotecnologia, Lavras, v. 33, n. 5, p. 1351-1359, set./out. 2009.http://repositorio.ufla.br/jspui/handle/1/7034Ciência e Agrotecnologia v.33 n.5 2009reponame:Repositório Institucional da UFLAinstname:Universidade Federal de Lavras (UFLA)instacron:UFLAHurtado, Sandro Manuel CarmelinoSilva, Carlos AlbertoResende, Álvaro Vilela deVon Pinho, Renzo GarciaInácio, Euzelina dos Santos BorgesHigashikawa, Fábio Satoshienginfo:eu-repo/semantics/openAccess2016-09-27T17:35:38Zoai:localhost:1/7034Repositório InstitucionalPUBhttp://repositorio.ufla.br/oai/requestnivaldo@ufla.br || repositorio.biblioteca@ufla.bropendoar:2016-09-27T17:35:38Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)false
dc.title.none.fl_str_mv Spatial variability of soil acidity attributes and the spatialization of liming requirement for corn
Variabilidade espacial de atributos de acidez do solo e espacialização da necessidade de calagem para o milho
title Spatial variability of soil acidity attributes and the spatialization of liming requirement for corn
spellingShingle Spatial variability of soil acidity attributes and the spatialization of liming requirement for corn
Hurtado, Sandro Manuel Carmelino
Liming of soils
Geology - Statistical methods
Agriculture - Statistical methods
Calagem dos solos
Geologia - Métodos estatísticos
Agricultura - Métodos estatísticos
title_short Spatial variability of soil acidity attributes and the spatialization of liming requirement for corn
title_full Spatial variability of soil acidity attributes and the spatialization of liming requirement for corn
title_fullStr Spatial variability of soil acidity attributes and the spatialization of liming requirement for corn
title_full_unstemmed Spatial variability of soil acidity attributes and the spatialization of liming requirement for corn
title_sort Spatial variability of soil acidity attributes and the spatialization of liming requirement for corn
author Hurtado, Sandro Manuel Carmelino
author_facet Hurtado, Sandro Manuel Carmelino
Silva, Carlos Alberto
Resende, Álvaro Vilela de
Von Pinho, Renzo Garcia
Inácio, Euzelina dos Santos Borges
Higashikawa, Fábio Satoshi
author_role author
author2 Silva, Carlos Alberto
Resende, Álvaro Vilela de
Von Pinho, Renzo Garcia
Inácio, Euzelina dos Santos Borges
Higashikawa, Fábio Satoshi
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Hurtado, Sandro Manuel Carmelino
Silva, Carlos Alberto
Resende, Álvaro Vilela de
Von Pinho, Renzo Garcia
Inácio, Euzelina dos Santos Borges
Higashikawa, Fábio Satoshi
dc.subject.por.fl_str_mv Liming of soils
Geology - Statistical methods
Agriculture - Statistical methods
Calagem dos solos
Geologia - Métodos estatísticos
Agricultura - Métodos estatísticos
topic Liming of soils
Geology - Statistical methods
Agriculture - Statistical methods
Calagem dos solos
Geologia - Métodos estatísticos
Agricultura - Métodos estatísticos
description In Brazil, technicians, in most cases, ignore the aspects related to the spatial variability of the soil acidity attributes when liming requirement is calculated. The objective of this study was to validate the liming practice, evaluating the presence of spatial variability of the soil acidity attributes and the existence of areas with differentiated liming requirement, which were calculated by different methods. The experiment was carried out in an area cultivated with corn under conventional management and irrigation. The soil (0-0.2 m) was sampled in a conventional way (composite soil sample) and in a systematic scheme, by use of a grid sampling. In sequence to the soil fertility attributes analysis, it was calculated the liming requirement, according to the methods of SMP pH, aluminum neutralization and elevation of soil Ca and Mg levels, and increase of the soil base saturation. After the descriptive analysis of the data set was accomplished, the semivariograms were calculated and the maps were obtained through the kriging technique. Absence of spatial dependence, as well as the non necessity of limestone application, was observed for the Al neutralization calculation method. Spatial dependence was only verified for the soil acidity attributes and to the liming requirement calculated by the base saturation and SMP pH methods; for these two methods, the semivariogram ranges obtained varied from 35.7 to 200.5 m. The results have highlighted the existence of differentiated liming requirement zones when the variability of the soil acidity attributes was considered in the calculation of the dose and type of limestone to be used for corn soil acidity correction.
publishDate 2009
dc.date.none.fl_str_mv 2009-10-01
2015-04-30T13:35:23Z
2015-04-30T13:35:23Z
2015-04-30
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542009000500022
HURTADO, S. M. C. et al. Spatial variability of soil acidity attributes and the spatialization of liming requirement for corn. Ciência e Agrotecnologia, Lavras, v. 33, n. 5, p. 1351-1359, set./out. 2009.
http://repositorio.ufla.br/jspui/handle/1/7034
url http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542009000500022
http://repositorio.ufla.br/jspui/handle/1/7034
identifier_str_mv HURTADO, S. M. C. et al. Spatial variability of soil acidity attributes and the spatialization of liming requirement for corn. Ciência e Agrotecnologia, Lavras, v. 33, n. 5, p. 1351-1359, set./out. 2009.
dc.language.iso.fl_str_mv eng
language eng
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 Universidade Federal de Lavras
publisher.none.fl_str_mv Editora da Universidade Federal de Lavras
dc.source.none.fl_str_mv Ciência e Agrotecnologia v.33 n.5 2009
reponame:Repositório Institucional da UFLA
instname:Universidade Federal de Lavras (UFLA)
instacron:UFLA
instname_str Universidade Federal de Lavras (UFLA)
instacron_str UFLA
institution UFLA
reponame_str Repositório Institucional da UFLA
collection Repositório Institucional da UFLA
repository.name.fl_str_mv Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)
repository.mail.fl_str_mv nivaldo@ufla.br || repositorio.biblioteca@ufla.br
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