Structural characteristics of marandu palisadegrass swards subjected to continuous stocking and contrasting rhythms of growth

Detalhes bibliográficos
Autor(a) principal: Mesquita,Priscila de
Data de Publicação: 2010
Outros Autores: da Silva,Sila Carneiro, Paiva,Adenilson José, Caminha,Fábio Olegário, Pereira,Lilian Elgalise Techio, Guarda,Vítor Del'Álamo, 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=S0103-90162010000100004
Resumo: The concept of sward target has been used recently to characterise grazing management practices, but its efficiency to monitor and control sward structure questioned since it corresponds to a single sward structural feature, usually sward surface height. The objective of this experiment was to evaluate sward structure and its patterns of variation throughout the year on continuously stocked marandu palisadegrass swards maintained at 30 cm and subjected to contrasting rhythms of growth from January 2007 to April 2008. Treatments corresponded to three nitrogen application rates (150, 300 and 450 kg ha-1 of N) plus the control (no N fertilisation), and were allocated to experimental units according to a complete randomised block design, with four replications. Sward herbage mass, morphological composition, leaf area index (LAI), foliage angle and light interception were evaluated. The increase in nitrogen application rates resulted in increased sward herbage mass, proportion of leaf and stem, and reduction in the proportion of dead material. These modifications were in line with the increase in LAI and reduction in foliage angle, although they did not modify sward light interception. Despite the wide range of nitrogen application rates used, there was a common pattern of variation in sward structure. Overall, changes in sward structural characteristics generated by the range of growth rhythms studied were small, indicating that sward height corresponded to an efficient way to monitor and control the grazing process and sward structure, and can be used to define targets of grazing management.
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spelling Structural characteristics of marandu palisadegrass swards subjected to continuous stocking and contrasting rhythms of growthBrachiaria brizanthanitrogensward structuresward heightgrazing managementThe concept of sward target has been used recently to characterise grazing management practices, but its efficiency to monitor and control sward structure questioned since it corresponds to a single sward structural feature, usually sward surface height. The objective of this experiment was to evaluate sward structure and its patterns of variation throughout the year on continuously stocked marandu palisadegrass swards maintained at 30 cm and subjected to contrasting rhythms of growth from January 2007 to April 2008. Treatments corresponded to three nitrogen application rates (150, 300 and 450 kg ha-1 of N) plus the control (no N fertilisation), and were allocated to experimental units according to a complete randomised block design, with four replications. Sward herbage mass, morphological composition, leaf area index (LAI), foliage angle and light interception were evaluated. The increase in nitrogen application rates resulted in increased sward herbage mass, proportion of leaf and stem, and reduction in the proportion of dead material. These modifications were in line with the increase in LAI and reduction in foliage angle, although they did not modify sward light interception. Despite the wide range of nitrogen application rates used, there was a common pattern of variation in sward structure. Overall, changes in sward structural characteristics generated by the range of growth rhythms studied were small, indicating that sward height corresponded to an efficient way to monitor and control the grazing process and sward structure, and can be used to define targets of grazing management.Escola Superior de Agricultura "Luiz de Queiroz"2010-02-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162010000100004Scientia Agricola v.67 n.1 2010reponame:Scientia Agrícola (Online)instname:Universidade de São Paulo (USP)instacron:USP10.1590/S0103-90162010000100004info:eu-repo/semantics/openAccessMesquita,Priscila deda Silva,Sila CarneiroPaiva,Adenilson JoséCaminha,Fábio OlegárioPereira,Lilian Elgalise TechioGuarda,Vítor Del'ÁlamoNascimento Júnior,Domicio doeng2010-03-16T00:00:00Zoai:scielo:S0103-90162010000100004Revistahttp://revistas.usp.br/sa/indexPUBhttps://old.scielo.br/oai/scielo-oai.phpscientia@usp.br||alleoni@usp.br1678-992X0103-9016opendoar:2010-03-16T00:00Scientia Agrícola (Online) - Universidade de São Paulo (USP)false
dc.title.none.fl_str_mv Structural characteristics of marandu palisadegrass swards subjected to continuous stocking and contrasting rhythms of growth
title Structural characteristics of marandu palisadegrass swards subjected to continuous stocking and contrasting rhythms of growth
spellingShingle Structural characteristics of marandu palisadegrass swards subjected to continuous stocking and contrasting rhythms of growth
Mesquita,Priscila de
Brachiaria brizantha
nitrogen
sward structure
sward height
grazing management
title_short Structural characteristics of marandu palisadegrass swards subjected to continuous stocking and contrasting rhythms of growth
title_full Structural characteristics of marandu palisadegrass swards subjected to continuous stocking and contrasting rhythms of growth
title_fullStr Structural characteristics of marandu palisadegrass swards subjected to continuous stocking and contrasting rhythms of growth
title_full_unstemmed Structural characteristics of marandu palisadegrass swards subjected to continuous stocking and contrasting rhythms of growth
title_sort Structural characteristics of marandu palisadegrass swards subjected to continuous stocking and contrasting rhythms of growth
author Mesquita,Priscila de
author_facet Mesquita,Priscila de
da Silva,Sila Carneiro
Paiva,Adenilson José
Caminha,Fábio Olegário
Pereira,Lilian Elgalise Techio
Guarda,Vítor Del'Álamo
Nascimento Júnior,Domicio do
author_role author
author2 da Silva,Sila Carneiro
Paiva,Adenilson José
Caminha,Fábio Olegário
Pereira,Lilian Elgalise Techio
Guarda,Vítor Del'Álamo
Nascimento Júnior,Domicio do
author2_role author
author
author
author
author
author
dc.contributor.author.fl_str_mv Mesquita,Priscila de
da Silva,Sila Carneiro
Paiva,Adenilson José
Caminha,Fábio Olegário
Pereira,Lilian Elgalise Techio
Guarda,Vítor Del'Álamo
Nascimento Júnior,Domicio do
dc.subject.por.fl_str_mv Brachiaria brizantha
nitrogen
sward structure
sward height
grazing management
topic Brachiaria brizantha
nitrogen
sward structure
sward height
grazing management
description The concept of sward target has been used recently to characterise grazing management practices, but its efficiency to monitor and control sward structure questioned since it corresponds to a single sward structural feature, usually sward surface height. The objective of this experiment was to evaluate sward structure and its patterns of variation throughout the year on continuously stocked marandu palisadegrass swards maintained at 30 cm and subjected to contrasting rhythms of growth from January 2007 to April 2008. Treatments corresponded to three nitrogen application rates (150, 300 and 450 kg ha-1 of N) plus the control (no N fertilisation), and were allocated to experimental units according to a complete randomised block design, with four replications. Sward herbage mass, morphological composition, leaf area index (LAI), foliage angle and light interception were evaluated. The increase in nitrogen application rates resulted in increased sward herbage mass, proportion of leaf and stem, and reduction in the proportion of dead material. These modifications were in line with the increase in LAI and reduction in foliage angle, although they did not modify sward light interception. Despite the wide range of nitrogen application rates used, there was a common pattern of variation in sward structure. Overall, changes in sward structural characteristics generated by the range of growth rhythms studied were small, indicating that sward height corresponded to an efficient way to monitor and control the grazing process and sward structure, and can be used to define targets of grazing management.
publishDate 2010
dc.date.none.fl_str_mv 2010-02-01
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=S0103-90162010000100004
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162010000100004
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0103-90162010000100004
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.67 n.1 2010
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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