Development of root biomass in an Eucalyptus globulus plantation under different water and nutrient regimes
Autor(a) principal: | |
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Data de Publicação: | 1995 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10400.5/1378 |
Resumo: | The distribution along the soil profile of Eucalyptus globulus root biomass was followed in a plantation in central Portugal at 1, 2 and 6 years after planting, using an excavation technique. The experimental design consisted of a control (C)and 3 treatments: application of solid fertilizers twice a year (F), irrigation without the application of fertilizers (I) and irrigation combined with liquid fertilizers (IL). Bellow- and above-ground biomass decreased as follows: IL>I>F>C. So, water stress limited growth more severely than nutrient stress. The roots rapidly colonized the top soil volume (0-20 cm depth)during the first year after planting. Fine roots biomass 6 years after planting was 2.2, 1.8 and 1.6 times higher in IL treatment than it was respectively in control, and in F and I treatments. The distribution of fine roots along the soil profile 6 years after planting was more even in IL compared to the other treatments. However, fine roots in the top soil were more concentrated along the tree rows in the irrigated treatments than in the others. The proportion of below-ground biomass relative to the total tree biomass relative to the total tree biomass and the root/shoot ratio were higher in C than in the treatments at early growth stages. This pattern was not so clear 6 years after planting, due to the increased proportion of the tap root relative to total biomass, especially in the IL treatment. |
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Development of root biomass in an Eucalyptus globulus plantation under different water and nutrient regimeseucalyptus globulusbelow-ground biomassbiomass partitioningfertilizersirrigationrootsThe distribution along the soil profile of Eucalyptus globulus root biomass was followed in a plantation in central Portugal at 1, 2 and 6 years after planting, using an excavation technique. The experimental design consisted of a control (C)and 3 treatments: application of solid fertilizers twice a year (F), irrigation without the application of fertilizers (I) and irrigation combined with liquid fertilizers (IL). Bellow- and above-ground biomass decreased as follows: IL>I>F>C. So, water stress limited growth more severely than nutrient stress. The roots rapidly colonized the top soil volume (0-20 cm depth)during the first year after planting. Fine roots biomass 6 years after planting was 2.2, 1.8 and 1.6 times higher in IL treatment than it was respectively in control, and in F and I treatments. The distribution of fine roots along the soil profile 6 years after planting was more even in IL compared to the other treatments. However, fine roots in the top soil were more concentrated along the tree rows in the irrigated treatments than in the others. The proportion of below-ground biomass relative to the total tree biomass relative to the total tree biomass and the root/shoot ratio were higher in C than in the treatments at early growth stages. This pattern was not so clear 6 years after planting, due to the increased proportion of the tap root relative to total biomass, especially in the IL treatment.Kluwer Academic PublishersRepositório da Universidade de LisboaFabião, AntónioMadeira, ManuelSteen, E.Katterer, T.Ribeiro, C.Araújo, C.2009-10-26T16:04:14Z19951995-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.5/1378eng"Plant and Soil". ISSN 0032-079X. 168-169 (1995) 215-2230032-079Xinfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-03-06T14:32:38ZPortal AgregadorONG |
dc.title.none.fl_str_mv |
Development of root biomass in an Eucalyptus globulus plantation under different water and nutrient regimes |
title |
Development of root biomass in an Eucalyptus globulus plantation under different water and nutrient regimes |
spellingShingle |
Development of root biomass in an Eucalyptus globulus plantation under different water and nutrient regimes Fabião, António eucalyptus globulus below-ground biomass biomass partitioning fertilizers irrigation roots |
title_short |
Development of root biomass in an Eucalyptus globulus plantation under different water and nutrient regimes |
title_full |
Development of root biomass in an Eucalyptus globulus plantation under different water and nutrient regimes |
title_fullStr |
Development of root biomass in an Eucalyptus globulus plantation under different water and nutrient regimes |
title_full_unstemmed |
Development of root biomass in an Eucalyptus globulus plantation under different water and nutrient regimes |
title_sort |
Development of root biomass in an Eucalyptus globulus plantation under different water and nutrient regimes |
author |
Fabião, António |
author_facet |
Fabião, António Madeira, Manuel Steen, E. Katterer, T. Ribeiro, C. Araújo, C. |
author_role |
author |
author2 |
Madeira, Manuel Steen, E. Katterer, T. Ribeiro, C. Araújo, C. |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Repositório da Universidade de Lisboa |
dc.contributor.author.fl_str_mv |
Fabião, António Madeira, Manuel Steen, E. Katterer, T. Ribeiro, C. Araújo, C. |
dc.subject.por.fl_str_mv |
eucalyptus globulus below-ground biomass biomass partitioning fertilizers irrigation roots |
topic |
eucalyptus globulus below-ground biomass biomass partitioning fertilizers irrigation roots |
description |
The distribution along the soil profile of Eucalyptus globulus root biomass was followed in a plantation in central Portugal at 1, 2 and 6 years after planting, using an excavation technique. The experimental design consisted of a control (C)and 3 treatments: application of solid fertilizers twice a year (F), irrigation without the application of fertilizers (I) and irrigation combined with liquid fertilizers (IL). Bellow- and above-ground biomass decreased as follows: IL>I>F>C. So, water stress limited growth more severely than nutrient stress. The roots rapidly colonized the top soil volume (0-20 cm depth)during the first year after planting. Fine roots biomass 6 years after planting was 2.2, 1.8 and 1.6 times higher in IL treatment than it was respectively in control, and in F and I treatments. The distribution of fine roots along the soil profile 6 years after planting was more even in IL compared to the other treatments. However, fine roots in the top soil were more concentrated along the tree rows in the irrigated treatments than in the others. The proportion of below-ground biomass relative to the total tree biomass relative to the total tree biomass and the root/shoot ratio were higher in C than in the treatments at early growth stages. This pattern was not so clear 6 years after planting, due to the increased proportion of the tap root relative to total biomass, especially in the IL treatment. |
publishDate |
1995 |
dc.date.none.fl_str_mv |
1995 1995-01-01T00:00:00Z 2009-10-26T16:04:14Z |
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://hdl.handle.net/10400.5/1378 |
url |
http://hdl.handle.net/10400.5/1378 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
"Plant and Soil". ISSN 0032-079X. 168-169 (1995) 215-223 0032-079X |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Kluwer Academic Publishers |
publisher.none.fl_str_mv |
Kluwer Academic Publishers |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
|
repository.mail.fl_str_mv |
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_version_ |
1777302081798930432 |