Effect of increasing densities of Urochloa brizantha cv. Marandu on Eucalyptus urograndis initial development in silvopastoral system
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1007/s11676-018-0635-4 http://hdl.handle.net/11449/170842 |
Resumo: | In silvopasture system, the coexistence of eucalyptus seedlings with other species may result in growth reduction, especially during eucalyptus early development. Therefore, studies elucidating how forage species affect the eucalyptus growth can provide important information for their rational management aiming to obtain the maximum gain of the system. The aim of this work was to evaluate the effect of increasing densities of Urochloa brizantha cv. Marandu in the early development of Eucalyptus urograndis. An experiment was conducted in 20 L pots, in an open and semi-controlled area, during 90 days after planting of eucalyptus. A completely randomized design with four replications was used, in a 6 × 7 factorial system, meaning six evaluation periods and seven densities of U. brizantha: 0 (control), 22, 33, 44, 67, 89 and 111 plants m−2. Fortnightly, eucalyptus height, stem diameter and chlorophyll fluorescence (Fv/Fm) were evaluated. At the end of experimental period, the net assimilation rate, stomatal conductance and transpiration rate of eucalyptus plants were determined, in addition to the dry matter of eucalyptus (leaves and stem) and U. brizantha (leaves). In coexistence with 111 plants m−2, eucalyptus had reduction of 63.9% on total dry matter and 72.7% on leaf area, compared to the control. From the density of 22 plants m−2, U. brizantha negatively interfere significantly the growth of E. urograndis. Up to 8 plants m−2 there are no reductions greater than 5% in eucalyptus height and stem diameter. |
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Repositório Institucional da UNESP |
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Effect of increasing densities of Urochloa brizantha cv. Marandu on Eucalyptus urograndis initial development in silvopastoral systemCompetitionEucalyptusInterferencePalisade grassIn silvopasture system, the coexistence of eucalyptus seedlings with other species may result in growth reduction, especially during eucalyptus early development. Therefore, studies elucidating how forage species affect the eucalyptus growth can provide important information for their rational management aiming to obtain the maximum gain of the system. The aim of this work was to evaluate the effect of increasing densities of Urochloa brizantha cv. Marandu in the early development of Eucalyptus urograndis. An experiment was conducted in 20 L pots, in an open and semi-controlled area, during 90 days after planting of eucalyptus. A completely randomized design with four replications was used, in a 6 × 7 factorial system, meaning six evaluation periods and seven densities of U. brizantha: 0 (control), 22, 33, 44, 67, 89 and 111 plants m−2. Fortnightly, eucalyptus height, stem diameter and chlorophyll fluorescence (Fv/Fm) were evaluated. At the end of experimental period, the net assimilation rate, stomatal conductance and transpiration rate of eucalyptus plants were determined, in addition to the dry matter of eucalyptus (leaves and stem) and U. brizantha (leaves). In coexistence with 111 plants m−2, eucalyptus had reduction of 63.9% on total dry matter and 72.7% on leaf area, compared to the control. From the density of 22 plants m−2, U. brizantha negatively interfere significantly the growth of E. urograndis. Up to 8 plants m−2 there are no reductions greater than 5% in eucalyptus height and stem diameter.University of Sao Paulo – USP/ESALQ, Avenida Pádua Dias 11Sao Paulo State University – UNESP/FCAV, Via de Acesso Prof. Paulo Donato Castellane s/nSao Paulo State University – UNESP/FCAV, Via de Acesso Prof. Paulo Donato Castellane s/nUniversidade de São Paulo (USP)Universidade Estadual Paulista (Unesp)Colmanetti, Michel Anderson AlmeidaBacha, Allan Lopes [UNESP]da Costa Aguiar Alves, Pedro Luis [UNESP]de Paula, Rinaldo Cesar [UNESP]2018-12-11T16:52:38Z2018-12-11T16:52:38Z2018-03-31info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article1-7application/pdfhttp://dx.doi.org/10.1007/s11676-018-0635-4Journal of Forestry Research, p. 1-7.1993-06071007-662Xhttp://hdl.handle.net/11449/17084210.1007/s11676-018-0635-42-s2.0-850445831632-s2.0-85044583163.pdf18206261000810270000-0001-9088-3924Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal of Forestry Researchinfo:eu-repo/semantics/openAccess2023-12-08T06:22:26Zoai:repositorio.unesp.br:11449/170842Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T19:47:33.624904Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Effect of increasing densities of Urochloa brizantha cv. Marandu on Eucalyptus urograndis initial development in silvopastoral system |
title |
Effect of increasing densities of Urochloa brizantha cv. Marandu on Eucalyptus urograndis initial development in silvopastoral system |
spellingShingle |
Effect of increasing densities of Urochloa brizantha cv. Marandu on Eucalyptus urograndis initial development in silvopastoral system Colmanetti, Michel Anderson Almeida Competition Eucalyptus Interference Palisade grass |
title_short |
Effect of increasing densities of Urochloa brizantha cv. Marandu on Eucalyptus urograndis initial development in silvopastoral system |
title_full |
Effect of increasing densities of Urochloa brizantha cv. Marandu on Eucalyptus urograndis initial development in silvopastoral system |
title_fullStr |
Effect of increasing densities of Urochloa brizantha cv. Marandu on Eucalyptus urograndis initial development in silvopastoral system |
title_full_unstemmed |
Effect of increasing densities of Urochloa brizantha cv. Marandu on Eucalyptus urograndis initial development in silvopastoral system |
title_sort |
Effect of increasing densities of Urochloa brizantha cv. Marandu on Eucalyptus urograndis initial development in silvopastoral system |
author |
Colmanetti, Michel Anderson Almeida |
author_facet |
Colmanetti, Michel Anderson Almeida Bacha, Allan Lopes [UNESP] da Costa Aguiar Alves, Pedro Luis [UNESP] de Paula, Rinaldo Cesar [UNESP] |
author_role |
author |
author2 |
Bacha, Allan Lopes [UNESP] da Costa Aguiar Alves, Pedro Luis [UNESP] de Paula, Rinaldo Cesar [UNESP] |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidade de São Paulo (USP) Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Colmanetti, Michel Anderson Almeida Bacha, Allan Lopes [UNESP] da Costa Aguiar Alves, Pedro Luis [UNESP] de Paula, Rinaldo Cesar [UNESP] |
dc.subject.por.fl_str_mv |
Competition Eucalyptus Interference Palisade grass |
topic |
Competition Eucalyptus Interference Palisade grass |
description |
In silvopasture system, the coexistence of eucalyptus seedlings with other species may result in growth reduction, especially during eucalyptus early development. Therefore, studies elucidating how forage species affect the eucalyptus growth can provide important information for their rational management aiming to obtain the maximum gain of the system. The aim of this work was to evaluate the effect of increasing densities of Urochloa brizantha cv. Marandu in the early development of Eucalyptus urograndis. An experiment was conducted in 20 L pots, in an open and semi-controlled area, during 90 days after planting of eucalyptus. A completely randomized design with four replications was used, in a 6 × 7 factorial system, meaning six evaluation periods and seven densities of U. brizantha: 0 (control), 22, 33, 44, 67, 89 and 111 plants m−2. Fortnightly, eucalyptus height, stem diameter and chlorophyll fluorescence (Fv/Fm) were evaluated. At the end of experimental period, the net assimilation rate, stomatal conductance and transpiration rate of eucalyptus plants were determined, in addition to the dry matter of eucalyptus (leaves and stem) and U. brizantha (leaves). In coexistence with 111 plants m−2, eucalyptus had reduction of 63.9% on total dry matter and 72.7% on leaf area, compared to the control. From the density of 22 plants m−2, U. brizantha negatively interfere significantly the growth of E. urograndis. Up to 8 plants m−2 there are no reductions greater than 5% in eucalyptus height and stem diameter. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-12-11T16:52:38Z 2018-12-11T16:52:38Z 2018-03-31 |
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://dx.doi.org/10.1007/s11676-018-0635-4 Journal of Forestry Research, p. 1-7. 1993-0607 1007-662X http://hdl.handle.net/11449/170842 10.1007/s11676-018-0635-4 2-s2.0-85044583163 2-s2.0-85044583163.pdf 1820626100081027 0000-0001-9088-3924 |
url |
http://dx.doi.org/10.1007/s11676-018-0635-4 http://hdl.handle.net/11449/170842 |
identifier_str_mv |
Journal of Forestry Research, p. 1-7. 1993-0607 1007-662X 10.1007/s11676-018-0635-4 2-s2.0-85044583163 2-s2.0-85044583163.pdf 1820626100081027 0000-0001-9088-3924 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Journal of Forestry Research |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
1-7 application/pdf |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808129119031918592 |