Structural characteristics of marandu palisadegrass swards subjected to continuous stocking and contrasting rhythms of growth
Autor(a) principal: | |
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Data de Publicação: | 2010 |
Outros Autores: | , , , , , |
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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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 |
_version_ |
1748936461859684352 |