Spatial variability of soil acidity attributes and the spatialization of liming requirement for corn
Autor(a) principal: | |
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Data de Publicação: | 2009 |
Outros Autores: | , , , , |
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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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 |
_version_ |
1815439341262995456 |