Gas exchanges and growth of maize as affected by aeration porosity and soil compaction
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Revista ciência agronômica (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902020000300403 |
Resumo: | ABSTRACT Based on the hypothesis that less than 10% aeration porosity is sufficient to ensure plant development, the objective of this study was to evaluate the effect of levels of aeration porosity and soil density on the gas exchange and growth of maize plants. The experiment was conducted in a greenhouse, in randomized blocks in a 2 × 5 factorial arrangement: two densities (1.6 and 1.7 Mg m-3) and five aeration porosities (0.07, 0.08, 0.09, 0.10 and 0.12 m3 m-3), with five replicates. The interaction between the factors did not have an effect on the analyzed variables. Aeration porosity had a significant effect on photosynthesis, stomatal conductance, relative chlorophyll index (SPAD), plant height and biomass production, whose data were fitted by quadratic models. The highest aeration porosity reduced conductance by 11%, followed by 7% reduction in photosynthesis and 6.4% in SPAD. Aeration porosities lower than 0.10 m3 m-3 did not cause significant reduction in the values of gas exchange and growth of maize. At soil density of 1.7 Mg m-3, photosynthesis, SPAD, chlorophyll b, total chlorophyll and carotenoids were higher, but with no increments in biomass and leaf area. It is concluded that aeration porosities greater than 0.10 m3 m-3 are more limiting to plants due to changes in soil attributes, such as penetration resistance and water content. The highest contents of chlorophyll b and carotenoids at the highest density are acclimatization responses to the stress condition. |
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Gas exchanges and growth of maize as affected by aeration porosity and soil compactionSoil aerationPhysical qualityEcophysiologyZea mays L.ABSTRACT Based on the hypothesis that less than 10% aeration porosity is sufficient to ensure plant development, the objective of this study was to evaluate the effect of levels of aeration porosity and soil density on the gas exchange and growth of maize plants. The experiment was conducted in a greenhouse, in randomized blocks in a 2 × 5 factorial arrangement: two densities (1.6 and 1.7 Mg m-3) and five aeration porosities (0.07, 0.08, 0.09, 0.10 and 0.12 m3 m-3), with five replicates. The interaction between the factors did not have an effect on the analyzed variables. Aeration porosity had a significant effect on photosynthesis, stomatal conductance, relative chlorophyll index (SPAD), plant height and biomass production, whose data were fitted by quadratic models. The highest aeration porosity reduced conductance by 11%, followed by 7% reduction in photosynthesis and 6.4% in SPAD. Aeration porosities lower than 0.10 m3 m-3 did not cause significant reduction in the values of gas exchange and growth of maize. At soil density of 1.7 Mg m-3, photosynthesis, SPAD, chlorophyll b, total chlorophyll and carotenoids were higher, but with no increments in biomass and leaf area. It is concluded that aeration porosities greater than 0.10 m3 m-3 are more limiting to plants due to changes in soil attributes, such as penetration resistance and water content. The highest contents of chlorophyll b and carotenoids at the highest density are acclimatization responses to the stress condition.Universidade Federal do Ceará2020-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902020000300403Revista Ciência Agronômica v.51 n.3 2020reponame:Revista ciência agronômica (Online)instname:Universidade Federal do Ceará (UFC)instacron:UFC10.5935/1806-6690.20200043info:eu-repo/semantics/openAccessSilva,Francisca Gleiciane daAssis Junior,Raimundo Nonato deMesquita,Rosilene OliveiraMarques,Edilaine da SilvaMota,Jaedson Cláudio Anunciatoeng2020-08-05T00:00:00Zoai:scielo:S1806-66902020000300403Revistahttp://www.ccarevista.ufc.br/PUBhttps://old.scielo.br/oai/scielo-oai.php||alekdutra@ufc.br|| ccarev@ufc.br1806-66900045-6888opendoar:2020-08-05T00:00Revista ciência agronômica (Online) - Universidade Federal do Ceará (UFC)false |
dc.title.none.fl_str_mv |
Gas exchanges and growth of maize as affected by aeration porosity and soil compaction |
title |
Gas exchanges and growth of maize as affected by aeration porosity and soil compaction |
spellingShingle |
Gas exchanges and growth of maize as affected by aeration porosity and soil compaction Silva,Francisca Gleiciane da Soil aeration Physical quality Ecophysiology Zea mays L. |
title_short |
Gas exchanges and growth of maize as affected by aeration porosity and soil compaction |
title_full |
Gas exchanges and growth of maize as affected by aeration porosity and soil compaction |
title_fullStr |
Gas exchanges and growth of maize as affected by aeration porosity and soil compaction |
title_full_unstemmed |
Gas exchanges and growth of maize as affected by aeration porosity and soil compaction |
title_sort |
Gas exchanges and growth of maize as affected by aeration porosity and soil compaction |
author |
Silva,Francisca Gleiciane da |
author_facet |
Silva,Francisca Gleiciane da Assis Junior,Raimundo Nonato de Mesquita,Rosilene Oliveira Marques,Edilaine da Silva Mota,Jaedson Cláudio Anunciato |
author_role |
author |
author2 |
Assis Junior,Raimundo Nonato de Mesquita,Rosilene Oliveira Marques,Edilaine da Silva Mota,Jaedson Cláudio Anunciato |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Silva,Francisca Gleiciane da Assis Junior,Raimundo Nonato de Mesquita,Rosilene Oliveira Marques,Edilaine da Silva Mota,Jaedson Cláudio Anunciato |
dc.subject.por.fl_str_mv |
Soil aeration Physical quality Ecophysiology Zea mays L. |
topic |
Soil aeration Physical quality Ecophysiology Zea mays L. |
description |
ABSTRACT Based on the hypothesis that less than 10% aeration porosity is sufficient to ensure plant development, the objective of this study was to evaluate the effect of levels of aeration porosity and soil density on the gas exchange and growth of maize plants. The experiment was conducted in a greenhouse, in randomized blocks in a 2 × 5 factorial arrangement: two densities (1.6 and 1.7 Mg m-3) and five aeration porosities (0.07, 0.08, 0.09, 0.10 and 0.12 m3 m-3), with five replicates. The interaction between the factors did not have an effect on the analyzed variables. Aeration porosity had a significant effect on photosynthesis, stomatal conductance, relative chlorophyll index (SPAD), plant height and biomass production, whose data were fitted by quadratic models. The highest aeration porosity reduced conductance by 11%, followed by 7% reduction in photosynthesis and 6.4% in SPAD. Aeration porosities lower than 0.10 m3 m-3 did not cause significant reduction in the values of gas exchange and growth of maize. At soil density of 1.7 Mg m-3, photosynthesis, SPAD, chlorophyll b, total chlorophyll and carotenoids were higher, but with no increments in biomass and leaf area. It is concluded that aeration porosities greater than 0.10 m3 m-3 are more limiting to plants due to changes in soil attributes, such as penetration resistance and water content. The highest contents of chlorophyll b and carotenoids at the highest density are acclimatization responses to the stress condition. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-01-01 |
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=S1806-66902020000300403 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902020000300403 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.5935/1806-6690.20200043 |
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 |
Universidade Federal do Ceará |
publisher.none.fl_str_mv |
Universidade Federal do Ceará |
dc.source.none.fl_str_mv |
Revista Ciência Agronômica v.51 n.3 2020 reponame:Revista ciência agronômica (Online) instname:Universidade Federal do Ceará (UFC) instacron:UFC |
instname_str |
Universidade Federal do Ceará (UFC) |
instacron_str |
UFC |
institution |
UFC |
reponame_str |
Revista ciência agronômica (Online) |
collection |
Revista ciência agronômica (Online) |
repository.name.fl_str_mv |
Revista ciência agronômica (Online) - Universidade Federal do Ceará (UFC) |
repository.mail.fl_str_mv |
||alekdutra@ufc.br|| ccarev@ufc.br |
_version_ |
1750297489852858368 |