Chemical and physical fertility indicators of a weakly-structured Ultisol after liming and mulching
Autor(a) principal: | |
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Data de Publicação: | 2009 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Scientia Agrícola (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162009000600012 |
Resumo: | In the humid tropic, chemical and physical soil properties that decrease soil's nutrient availability and increase oxygen deficiency are important as restrictions to crop growth. The objective of this study was to evaluate the relations between plant growth and chemical and physical fertility indicators of an Ultisol developed from sediments of the Itapecuru Formation in Central-Northern state of Maranhão, Brazil. An experiment was established with randomized block design, four replicates, and six treatments: 6.0 Mg ha-1 mulch with or without liming; 3.0 Mg ha-1 mulch with or without liming; bare soil with or without liming. Determinations in the plants included leaf area index, net assimilation rate, and the yield parameters: mean number and weight of ears, 100-kernel weight, harvest index, and total grain yield. Soil determinations consisted of bulk density variations on the surface and at 20 cm, effective porosity evolution after intentional flooding, and alterations in chemical indicators such as cation exchange capacity, bases saturation, organic carbon, and macronutrient contents. Mulching and liming were equivalent with regard to their influence on leaf area yield, but mulching was more important for corn productivity because of its greater effect on net photosynthesis. |
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Chemical and physical fertility indicators of a weakly-structured Ultisol after liming and mulchingZea mays L.growthyieldeffective porosityIn the humid tropic, chemical and physical soil properties that decrease soil's nutrient availability and increase oxygen deficiency are important as restrictions to crop growth. The objective of this study was to evaluate the relations between plant growth and chemical and physical fertility indicators of an Ultisol developed from sediments of the Itapecuru Formation in Central-Northern state of Maranhão, Brazil. An experiment was established with randomized block design, four replicates, and six treatments: 6.0 Mg ha-1 mulch with or without liming; 3.0 Mg ha-1 mulch with or without liming; bare soil with or without liming. Determinations in the plants included leaf area index, net assimilation rate, and the yield parameters: mean number and weight of ears, 100-kernel weight, harvest index, and total grain yield. Soil determinations consisted of bulk density variations on the surface and at 20 cm, effective porosity evolution after intentional flooding, and alterations in chemical indicators such as cation exchange capacity, bases saturation, organic carbon, and macronutrient contents. Mulching and liming were equivalent with regard to their influence on leaf area yield, but mulching was more important for corn productivity because of its greater effect on net photosynthesis.Escola Superior de Agricultura "Luiz de Queiroz"2009-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162009000600012Scientia Agricola v.66 n.6 2009reponame:Scientia Agrícola (Online)instname:Universidade de São Paulo (USP)instacron:USP10.1590/S0103-90162009000600012info:eu-repo/semantics/openAccessMoura,Emanoel Gomes deCoelho,Kátia PereiraFreitas,Idelfonso Colares deAguiar,Alana das Chagas Ferreiraeng2009-12-03T00:00:00Zoai:scielo:S0103-90162009000600012Revistahttp://revistas.usp.br/sa/indexPUBhttps://old.scielo.br/oai/scielo-oai.phpscientia@usp.br||alleoni@usp.br1678-992X0103-9016opendoar:2009-12-03T00:00Scientia Agrícola (Online) - Universidade de São Paulo (USP)false |
dc.title.none.fl_str_mv |
Chemical and physical fertility indicators of a weakly-structured Ultisol after liming and mulching |
title |
Chemical and physical fertility indicators of a weakly-structured Ultisol after liming and mulching |
spellingShingle |
Chemical and physical fertility indicators of a weakly-structured Ultisol after liming and mulching Moura,Emanoel Gomes de Zea mays L. growth yield effective porosity |
title_short |
Chemical and physical fertility indicators of a weakly-structured Ultisol after liming and mulching |
title_full |
Chemical and physical fertility indicators of a weakly-structured Ultisol after liming and mulching |
title_fullStr |
Chemical and physical fertility indicators of a weakly-structured Ultisol after liming and mulching |
title_full_unstemmed |
Chemical and physical fertility indicators of a weakly-structured Ultisol after liming and mulching |
title_sort |
Chemical and physical fertility indicators of a weakly-structured Ultisol after liming and mulching |
author |
Moura,Emanoel Gomes de |
author_facet |
Moura,Emanoel Gomes de Coelho,Kátia Pereira Freitas,Idelfonso Colares de Aguiar,Alana das Chagas Ferreira |
author_role |
author |
author2 |
Coelho,Kátia Pereira Freitas,Idelfonso Colares de Aguiar,Alana das Chagas Ferreira |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Moura,Emanoel Gomes de Coelho,Kátia Pereira Freitas,Idelfonso Colares de Aguiar,Alana das Chagas Ferreira |
dc.subject.por.fl_str_mv |
Zea mays L. growth yield effective porosity |
topic |
Zea mays L. growth yield effective porosity |
description |
In the humid tropic, chemical and physical soil properties that decrease soil's nutrient availability and increase oxygen deficiency are important as restrictions to crop growth. The objective of this study was to evaluate the relations between plant growth and chemical and physical fertility indicators of an Ultisol developed from sediments of the Itapecuru Formation in Central-Northern state of Maranhão, Brazil. An experiment was established with randomized block design, four replicates, and six treatments: 6.0 Mg ha-1 mulch with or without liming; 3.0 Mg ha-1 mulch with or without liming; bare soil with or without liming. Determinations in the plants included leaf area index, net assimilation rate, and the yield parameters: mean number and weight of ears, 100-kernel weight, harvest index, and total grain yield. Soil determinations consisted of bulk density variations on the surface and at 20 cm, effective porosity evolution after intentional flooding, and alterations in chemical indicators such as cation exchange capacity, bases saturation, organic carbon, and macronutrient contents. Mulching and liming were equivalent with regard to their influence on leaf area yield, but mulching was more important for corn productivity because of its greater effect on net photosynthesis. |
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=S0103-90162009000600012 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162009000600012 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0103-90162009000600012 |
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 |
Escola Superior de Agricultura "Luiz de Queiroz" |
publisher.none.fl_str_mv |
Escola Superior de Agricultura "Luiz de Queiroz" |
dc.source.none.fl_str_mv |
Scientia Agricola v.66 n.6 2009 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 |
_version_ |
1748936461842907136 |