Growth of marandu palisadegrass subjected to strategies of intermittent stocking

Detalhes bibliográficos
Autor(a) principal: Giacomini,Alessandra Aparecida
Data de Publicação: 2009
Outros Autores: Silva,Sila Carneiro da, Sarmento,Daniel Oliveira de Lucena, Zeferino,Cauê Varesqui, Souza Júnior,Salim Jacaúna, Trindade,Júlio Kuhn da, Guarda,Vítor del'Alamo, Nascimento Júnior,Domicio do
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Scientia Agrícola (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162009000600003
Resumo: Grazing strategies alter sward leaf area patterns of growth, affecting herbage accumulation and utilisation. The objective of this experiment was to evaluate the growth of marandu palisadegrass (Brachiaria brizantha cv. Marandu) swards subjected to strategies of intermittent stocking. The experiment was carried out in Piracicaba, São Paulo, Brazil, from October/2004 to September/2005. Swards were grazed at 95 and 100% canopy light interception (LI) to post-grazing heights of 10 and 15 cm, following a 2 × 2 factorial arrangement with four replications in a randomised complete block design. The response variables evaluated were: crop growth rate, relative growth rate, net assimilation rate, leaf area ratio and leaf weight ratio. In early and late spring, the highest crop growth rate was recorded for treatment 95/15 (11.2 and 10.1 g m-2 day-1, respectively), along with high values of net assimilation rate (4.4 and 6.9 g m-2 day-1, respectively), leaf area ratio (0.0095 and 0.0103 m-2 g-1, respectively) and leaf weight ratio (0.56 and 0.56 g g-1, respectively). To compensate reductions in net assimilation rate plants made some morphological and physiological adjustments increasing leaf area and leaf weight ratio. Relative growth rate and net assimilation rate were 26 and 50% higher, respectively, on swards grazed at 95% than at 100% LI. In early spring treatments 100/10 and 95/15 resulted in the highest relative growth rate (0.086 and 0.059 g m-2 day-1, respectively). Treatment 95/15 resulted in the most favourable pattern of growth (crop growth rate, relative growth rate, net assimilation rate), particularly during the transition period between winter and spring.
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spelling Growth of marandu palisadegrass subjected to strategies of intermittent stockingBrachiaria brizanthacanopy light interceptionregrowthgrazing managementGrazing strategies alter sward leaf area patterns of growth, affecting herbage accumulation and utilisation. The objective of this experiment was to evaluate the growth of marandu palisadegrass (Brachiaria brizantha cv. Marandu) swards subjected to strategies of intermittent stocking. The experiment was carried out in Piracicaba, São Paulo, Brazil, from October/2004 to September/2005. Swards were grazed at 95 and 100% canopy light interception (LI) to post-grazing heights of 10 and 15 cm, following a 2 × 2 factorial arrangement with four replications in a randomised complete block design. The response variables evaluated were: crop growth rate, relative growth rate, net assimilation rate, leaf area ratio and leaf weight ratio. In early and late spring, the highest crop growth rate was recorded for treatment 95/15 (11.2 and 10.1 g m-2 day-1, respectively), along with high values of net assimilation rate (4.4 and 6.9 g m-2 day-1, respectively), leaf area ratio (0.0095 and 0.0103 m-2 g-1, respectively) and leaf weight ratio (0.56 and 0.56 g g-1, respectively). To compensate reductions in net assimilation rate plants made some morphological and physiological adjustments increasing leaf area and leaf weight ratio. Relative growth rate and net assimilation rate were 26 and 50% higher, respectively, on swards grazed at 95% than at 100% LI. In early spring treatments 100/10 and 95/15 resulted in the highest relative growth rate (0.086 and 0.059 g m-2 day-1, respectively). Treatment 95/15 resulted in the most favourable pattern of growth (crop growth rate, relative growth rate, net assimilation rate), particularly during the transition period between winter and spring.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=S0103-90162009000600003Scientia Agricola v.66 n.6 2009reponame:Scientia Agrícola (Online)instname:Universidade de São Paulo (USP)instacron:USP10.1590/S0103-90162009000600003info:eu-repo/semantics/openAccessGiacomini,Alessandra AparecidaSilva,Sila Carneiro daSarmento,Daniel Oliveira de LucenaZeferino,Cauê VaresquiSouza Júnior,Salim JacaúnaTrindade,Júlio Kuhn daGuarda,Vítor del'AlamoNascimento Júnior,Domicio doeng2009-12-04T00:00:00Zoai:scielo:S0103-90162009000600003Revistahttp://revistas.usp.br/sa/indexPUBhttps://old.scielo.br/oai/scielo-oai.phpscientia@usp.br||alleoni@usp.br1678-992X0103-9016opendoar:2009-12-04T00:00Scientia Agrícola (Online) - Universidade de São Paulo (USP)false
dc.title.none.fl_str_mv Growth of marandu palisadegrass subjected to strategies of intermittent stocking
title Growth of marandu palisadegrass subjected to strategies of intermittent stocking
spellingShingle Growth of marandu palisadegrass subjected to strategies of intermittent stocking
Giacomini,Alessandra Aparecida
Brachiaria brizantha
canopy light interception
regrowth
grazing management
title_short Growth of marandu palisadegrass subjected to strategies of intermittent stocking
title_full Growth of marandu palisadegrass subjected to strategies of intermittent stocking
title_fullStr Growth of marandu palisadegrass subjected to strategies of intermittent stocking
title_full_unstemmed Growth of marandu palisadegrass subjected to strategies of intermittent stocking
title_sort Growth of marandu palisadegrass subjected to strategies of intermittent stocking
author Giacomini,Alessandra Aparecida
author_facet Giacomini,Alessandra Aparecida
Silva,Sila Carneiro da
Sarmento,Daniel Oliveira de Lucena
Zeferino,Cauê Varesqui
Souza Júnior,Salim Jacaúna
Trindade,Júlio Kuhn da
Guarda,Vítor del'Alamo
Nascimento Júnior,Domicio do
author_role author
author2 Silva,Sila Carneiro da
Sarmento,Daniel Oliveira de Lucena
Zeferino,Cauê Varesqui
Souza Júnior,Salim Jacaúna
Trindade,Júlio Kuhn da
Guarda,Vítor del'Alamo
Nascimento Júnior,Domicio do
author2_role author
author
author
author
author
author
author
dc.contributor.author.fl_str_mv Giacomini,Alessandra Aparecida
Silva,Sila Carneiro da
Sarmento,Daniel Oliveira de Lucena
Zeferino,Cauê Varesqui
Souza Júnior,Salim Jacaúna
Trindade,Júlio Kuhn da
Guarda,Vítor del'Alamo
Nascimento Júnior,Domicio do
dc.subject.por.fl_str_mv Brachiaria brizantha
canopy light interception
regrowth
grazing management
topic Brachiaria brizantha
canopy light interception
regrowth
grazing management
description Grazing strategies alter sward leaf area patterns of growth, affecting herbage accumulation and utilisation. The objective of this experiment was to evaluate the growth of marandu palisadegrass (Brachiaria brizantha cv. Marandu) swards subjected to strategies of intermittent stocking. The experiment was carried out in Piracicaba, São Paulo, Brazil, from October/2004 to September/2005. Swards were grazed at 95 and 100% canopy light interception (LI) to post-grazing heights of 10 and 15 cm, following a 2 × 2 factorial arrangement with four replications in a randomised complete block design. The response variables evaluated were: crop growth rate, relative growth rate, net assimilation rate, leaf area ratio and leaf weight ratio. In early and late spring, the highest crop growth rate was recorded for treatment 95/15 (11.2 and 10.1 g m-2 day-1, respectively), along with high values of net assimilation rate (4.4 and 6.9 g m-2 day-1, respectively), leaf area ratio (0.0095 and 0.0103 m-2 g-1, respectively) and leaf weight ratio (0.56 and 0.56 g g-1, respectively). To compensate reductions in net assimilation rate plants made some morphological and physiological adjustments increasing leaf area and leaf weight ratio. Relative growth rate and net assimilation rate were 26 and 50% higher, respectively, on swards grazed at 95% than at 100% LI. In early spring treatments 100/10 and 95/15 resulted in the highest relative growth rate (0.086 and 0.059 g m-2 day-1, respectively). Treatment 95/15 resulted in the most favourable pattern of growth (crop growth rate, relative growth rate, net assimilation rate), particularly during the transition period between winter and spring.
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=S0103-90162009000600003
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162009000600003
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0103-90162009000600003
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
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