Tillering and biomass partitioning of Mombasa grass under nitrogen fertilization during regrowth

Detalhes bibliográficos
Autor(a) principal: Garcez Neto,Américo Fróes
Data de Publicação: 2012
Outros Autores: Gobbi,Kátia Fernanda, Silva,Janielen da, Santos,Tiago Machado dos
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Revista Brasileira de Zootecnia (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000800004
Resumo: Biomass partitioning in forages is highly variable during plant development and with the rate of nutrient supply. This study was carried out with the objective to evaluate the tillering pattern and biomass partitioning of Mombasa grass (Megathyrsus maximus cv. Mombaça) subjected to rates of nitrogen (N) during regrowth. The treatments consisted of three weekly rates of N: control (without N supply), 25 and 50 mg dm-3 of N, which were evaluated by 1, 2, 4, 8, 16 and 32 days after defoliation. The design was of completely randomized blocks in a 3 × 6 factorial arrangement with three replicates. The number of tillers was measured and harvesting and weighting of the following morphological components were performed: leaf (leaf blades), pseudostem, stem base and root. Interaction between N rates and regrowth times was found for all variables analyzed. The N supply increased the number and weight of tiller (up to 117.3 and 167.6%, respectively), as well as the shoot dry matter yield of Mombasa grass. That effect was most significant particularly at 32 days of regrowth. Among the treatments receiving N supply, the highest N rate was more significant to leaf and shoot yield only after 6-11 days of regrowth. High N supply must be applied to Mombasa grass only after that time and the biomass harvested between 24-28 days of regrowth.
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spelling Tillering and biomass partitioning of Mombasa grass under nitrogen fertilization during regrowthforagemorphologystructuretillerBiomass partitioning in forages is highly variable during plant development and with the rate of nutrient supply. This study was carried out with the objective to evaluate the tillering pattern and biomass partitioning of Mombasa grass (Megathyrsus maximus cv. Mombaça) subjected to rates of nitrogen (N) during regrowth. The treatments consisted of three weekly rates of N: control (without N supply), 25 and 50 mg dm-3 of N, which were evaluated by 1, 2, 4, 8, 16 and 32 days after defoliation. The design was of completely randomized blocks in a 3 × 6 factorial arrangement with three replicates. The number of tillers was measured and harvesting and weighting of the following morphological components were performed: leaf (leaf blades), pseudostem, stem base and root. Interaction between N rates and regrowth times was found for all variables analyzed. The N supply increased the number and weight of tiller (up to 117.3 and 167.6%, respectively), as well as the shoot dry matter yield of Mombasa grass. That effect was most significant particularly at 32 days of regrowth. Among the treatments receiving N supply, the highest N rate was more significant to leaf and shoot yield only after 6-11 days of regrowth. High N supply must be applied to Mombasa grass only after that time and the biomass harvested between 24-28 days of regrowth.Sociedade Brasileira de Zootecnia2012-08-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000800004Revista Brasileira de Zootecnia v.41 n.8 2012reponame:Revista Brasileira de Zootecnia (Online)instname:Sociedade Brasileira de Zootecnia (SBZ)instacron:SBZ10.1590/S1516-35982012000800004info:eu-repo/semantics/openAccessGarcez Neto,Américo FróesGobbi,Kátia FernandaSilva,Janielen daSantos,Tiago Machado doseng2012-09-06T00:00:00Zoai:scielo:S1516-35982012000800004Revistahttps://www.rbz.org.br/pt-br/https://old.scielo.br/oai/scielo-oai.php||bz@sbz.org.br|| secretariarbz@sbz.org.br1806-92901516-3598opendoar:2012-09-06T00:00Revista Brasileira de Zootecnia (Online) - Sociedade Brasileira de Zootecnia (SBZ)false
dc.title.none.fl_str_mv Tillering and biomass partitioning of Mombasa grass under nitrogen fertilization during regrowth
title Tillering and biomass partitioning of Mombasa grass under nitrogen fertilization during regrowth
spellingShingle Tillering and biomass partitioning of Mombasa grass under nitrogen fertilization during regrowth
Garcez Neto,Américo Fróes
forage
morphology
structure
tiller
title_short Tillering and biomass partitioning of Mombasa grass under nitrogen fertilization during regrowth
title_full Tillering and biomass partitioning of Mombasa grass under nitrogen fertilization during regrowth
title_fullStr Tillering and biomass partitioning of Mombasa grass under nitrogen fertilization during regrowth
title_full_unstemmed Tillering and biomass partitioning of Mombasa grass under nitrogen fertilization during regrowth
title_sort Tillering and biomass partitioning of Mombasa grass under nitrogen fertilization during regrowth
author Garcez Neto,Américo Fróes
author_facet Garcez Neto,Américo Fróes
Gobbi,Kátia Fernanda
Silva,Janielen da
Santos,Tiago Machado dos
author_role author
author2 Gobbi,Kátia Fernanda
Silva,Janielen da
Santos,Tiago Machado dos
author2_role author
author
author
dc.contributor.author.fl_str_mv Garcez Neto,Américo Fróes
Gobbi,Kátia Fernanda
Silva,Janielen da
Santos,Tiago Machado dos
dc.subject.por.fl_str_mv forage
morphology
structure
tiller
topic forage
morphology
structure
tiller
description Biomass partitioning in forages is highly variable during plant development and with the rate of nutrient supply. This study was carried out with the objective to evaluate the tillering pattern and biomass partitioning of Mombasa grass (Megathyrsus maximus cv. Mombaça) subjected to rates of nitrogen (N) during regrowth. The treatments consisted of three weekly rates of N: control (without N supply), 25 and 50 mg dm-3 of N, which were evaluated by 1, 2, 4, 8, 16 and 32 days after defoliation. The design was of completely randomized blocks in a 3 × 6 factorial arrangement with three replicates. The number of tillers was measured and harvesting and weighting of the following morphological components were performed: leaf (leaf blades), pseudostem, stem base and root. Interaction between N rates and regrowth times was found for all variables analyzed. The N supply increased the number and weight of tiller (up to 117.3 and 167.6%, respectively), as well as the shoot dry matter yield of Mombasa grass. That effect was most significant particularly at 32 days of regrowth. Among the treatments receiving N supply, the highest N rate was more significant to leaf and shoot yield only after 6-11 days of regrowth. High N supply must be applied to Mombasa grass only after that time and the biomass harvested between 24-28 days of regrowth.
publishDate 2012
dc.date.none.fl_str_mv 2012-08-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
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status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000800004
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000800004
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1516-35982012000800004
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 Sociedade Brasileira de Zootecnia
publisher.none.fl_str_mv Sociedade Brasileira de Zootecnia
dc.source.none.fl_str_mv Revista Brasileira de Zootecnia v.41 n.8 2012
reponame:Revista Brasileira de Zootecnia (Online)
instname:Sociedade Brasileira de Zootecnia (SBZ)
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instname_str Sociedade Brasileira de Zootecnia (SBZ)
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reponame_str Revista Brasileira de Zootecnia (Online)
collection Revista Brasileira de Zootecnia (Online)
repository.name.fl_str_mv Revista Brasileira de Zootecnia (Online) - Sociedade Brasileira de Zootecnia (SBZ)
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