Lime and gypsum to improve root depth of orange crop in an Ultisol of the Coastal Tablelands
Autor(a) principal: | |
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Data de Publicação: | 2009 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Revista Brasileira de Engenharia Agrícola e Ambiental (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662009000700004 |
Resumo: | Coastal Tableland is a landscape unit in the North East of Brazil in which the main soils are Ultisols. In these soils, a compacted layer denominated "cohesive horizon" occurs and root growth is limited by it. An experiment with five treatments and six replications was set up in order to study how liming and gypsum could improve root depth of orange (Citrus sinensis L. Osbeck) crop in an Ultisol in which a compacted layer was found at 0.3 m. Treatments were: A - No liming and no gypsum; B - Liming to achieve 60% base saturation; C - B + 1 t of gypsum ha-1 ; D - B + 2 t of gypsum ha-1 and E - B + 3 t of gypsum ha-1. Gypsum increased calcium and sulfate in the cohesive horizon. Surface application of lime and gypsum did not cause changes in soil density and total porosity in the cohesive horizon. An improvement of root length was observed at the cohesive horizon. |
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Lime and gypsum to improve root depth of orange crop in an Ultisol of the Coastal Tablelandscompacted layercohesive horizonroot growthCoastal Tableland is a landscape unit in the North East of Brazil in which the main soils are Ultisols. In these soils, a compacted layer denominated "cohesive horizon" occurs and root growth is limited by it. An experiment with five treatments and six replications was set up in order to study how liming and gypsum could improve root depth of orange (Citrus sinensis L. Osbeck) crop in an Ultisol in which a compacted layer was found at 0.3 m. Treatments were: A - No liming and no gypsum; B - Liming to achieve 60% base saturation; C - B + 1 t of gypsum ha-1 ; D - B + 2 t of gypsum ha-1 and E - B + 3 t of gypsum ha-1. Gypsum increased calcium and sulfate in the cohesive horizon. Surface application of lime and gypsum did not cause changes in soil density and total porosity in the cohesive horizon. An improvement of root length was observed at the cohesive horizon.Departamento de Engenharia Agrícola - UFCG2009-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662009000700004Revista Brasileira de Engenharia Agrícola e Ambiental v.13 suppl.0 2009reponame:Revista Brasileira de Engenharia Agrícola e Ambiental (Online)instname:Universidade Federal de Campina Grande (UFCG)instacron:UFCG10.1590/S1415-43662009000700004info:eu-repo/semantics/openAccessSobral,Lafayette F.Cintra,Fernando L. D.Smyth,Jot T.eng2009-11-25T00:00:00Zoai:scielo:S1415-43662009000700004Revistahttp://www.scielo.br/rbeaaPUBhttps://old.scielo.br/oai/scielo-oai.php||agriambi@agriambi.com.br1807-19291415-4366opendoar:2009-11-25T00:00Revista Brasileira de Engenharia Agrícola e Ambiental (Online) - Universidade Federal de Campina Grande (UFCG)false |
dc.title.none.fl_str_mv |
Lime and gypsum to improve root depth of orange crop in an Ultisol of the Coastal Tablelands |
title |
Lime and gypsum to improve root depth of orange crop in an Ultisol of the Coastal Tablelands |
spellingShingle |
Lime and gypsum to improve root depth of orange crop in an Ultisol of the Coastal Tablelands Sobral,Lafayette F. compacted layer cohesive horizon root growth |
title_short |
Lime and gypsum to improve root depth of orange crop in an Ultisol of the Coastal Tablelands |
title_full |
Lime and gypsum to improve root depth of orange crop in an Ultisol of the Coastal Tablelands |
title_fullStr |
Lime and gypsum to improve root depth of orange crop in an Ultisol of the Coastal Tablelands |
title_full_unstemmed |
Lime and gypsum to improve root depth of orange crop in an Ultisol of the Coastal Tablelands |
title_sort |
Lime and gypsum to improve root depth of orange crop in an Ultisol of the Coastal Tablelands |
author |
Sobral,Lafayette F. |
author_facet |
Sobral,Lafayette F. Cintra,Fernando L. D. Smyth,Jot T. |
author_role |
author |
author2 |
Cintra,Fernando L. D. Smyth,Jot T. |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Sobral,Lafayette F. Cintra,Fernando L. D. Smyth,Jot T. |
dc.subject.por.fl_str_mv |
compacted layer cohesive horizon root growth |
topic |
compacted layer cohesive horizon root growth |
description |
Coastal Tableland is a landscape unit in the North East of Brazil in which the main soils are Ultisols. In these soils, a compacted layer denominated "cohesive horizon" occurs and root growth is limited by it. An experiment with five treatments and six replications was set up in order to study how liming and gypsum could improve root depth of orange (Citrus sinensis L. Osbeck) crop in an Ultisol in which a compacted layer was found at 0.3 m. Treatments were: A - No liming and no gypsum; B - Liming to achieve 60% base saturation; C - B + 1 t of gypsum ha-1 ; D - B + 2 t of gypsum ha-1 and E - B + 3 t of gypsum ha-1. Gypsum increased calcium and sulfate in the cohesive horizon. Surface application of lime and gypsum did not cause changes in soil density and total porosity in the cohesive horizon. An improvement of root length was observed at the cohesive horizon. |
publishDate |
2009 |
dc.date.none.fl_str_mv |
2009-12-01 |
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=S1415-43662009000700004 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662009000700004 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S1415-43662009000700004 |
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 |
Departamento de Engenharia Agrícola - UFCG |
publisher.none.fl_str_mv |
Departamento de Engenharia Agrícola - UFCG |
dc.source.none.fl_str_mv |
Revista Brasileira de Engenharia Agrícola e Ambiental v.13 suppl.0 2009 reponame:Revista Brasileira de Engenharia Agrícola e Ambiental (Online) instname:Universidade Federal de Campina Grande (UFCG) instacron:UFCG |
instname_str |
Universidade Federal de Campina Grande (UFCG) |
instacron_str |
UFCG |
institution |
UFCG |
reponame_str |
Revista Brasileira de Engenharia Agrícola e Ambiental (Online) |
collection |
Revista Brasileira de Engenharia Agrícola e Ambiental (Online) |
repository.name.fl_str_mv |
Revista Brasileira de Engenharia Agrícola e Ambiental (Online) - Universidade Federal de Campina Grande (UFCG) |
repository.mail.fl_str_mv |
||agriambi@agriambi.com.br |
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1750297679218343936 |