Effects of frequency and cutting height on dry-matter production, chemical composition, and regrowth of guinea grass

Detalhes bibliográficos
Autor(a) principal: Favoretto, Vanildo
Data de Publicação: 2014
Outros Autores: Tonini Júnior, Ricardo, Reis, Ricardo Andrade, Rodrigues, Luís Roberto de Andrade
Tipo de documento: Artigo
Idioma: por
Título da fonte: Pesquisa Agropecuária Brasileira (Online)
Texto Completo: https://seer.sct.embrapa.br/index.php/pab/article/view/17208
Resumo: This work was carried out at Faculdade de Ciências Agrárias e Veterinárias de Jaboticabal/ UNESP, São Paulo State, Brazil, in order to study the effect of two frequencies (35 and 42 days) and two cutting heights (15cm and 30cm from soil) on dry-matter production, chemical composition, and morphological and physiological characteristics of regrowth of guinea grass (Panicum maximum Jacq.) from January to April, 1984. Plants cut at intervals of 42 days showed higher percentage of decapitated tillers (53.70%), lower regrowth vigor (918.89kg DM/ha/21 days), and higher dry-matter production (12,652.67 kg/ha) than plants cut at 35 day Intervals. Regrowth vigor was better correlated with the percentage of decapitated tillers (r=- 0.60*) than with the levels of total nonstructural carbohydrates of stem basis (r = -0.04) and underground parts (r = -0.39). On the basis of dry-matter and crude protein productions, as well as chemical composition, guinea grass could be used from January to April at intervals of 42 days, independently of the cutting heights studies.
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spelling Effects of frequency and cutting height on dry-matter production, chemical composition, and regrowth of guinea grassEfeito da altura e da frequência de corte sobre a produção, composição bromatológica e vigor de rebrota do capim-coloniãomanagement; cutting time; total non structural carbohydratesmanejo; época de corte; carboidratos totais não estruturaisThis work was carried out at Faculdade de Ciências Agrárias e Veterinárias de Jaboticabal/ UNESP, São Paulo State, Brazil, in order to study the effect of two frequencies (35 and 42 days) and two cutting heights (15cm and 30cm from soil) on dry-matter production, chemical composition, and morphological and physiological characteristics of regrowth of guinea grass (Panicum maximum Jacq.) from January to April, 1984. Plants cut at intervals of 42 days showed higher percentage of decapitated tillers (53.70%), lower regrowth vigor (918.89kg DM/ha/21 days), and higher dry-matter production (12,652.67 kg/ha) than plants cut at 35 day Intervals. Regrowth vigor was better correlated with the percentage of decapitated tillers (r=- 0.60*) than with the levels of total nonstructural carbohydrates of stem basis (r = -0.04) and underground parts (r = -0.39). On the basis of dry-matter and crude protein productions, as well as chemical composition, guinea grass could be used from January to April at intervals of 42 days, independently of the cutting heights studies.O trabalho foi conduzido no Campus da Faculdade de Ciências Agrárias e Veterinárias de Jaboticabal/UNESP com o objetivo de estudar o efeito de duas frequências (35 e 42 dias) e duas alturas do corte (15 cm e 30 cm do solo) sobre as características morfo-fisiológicas de recuperação, a produção e a composição bromatológica do capim-colonião (Panicum maximum Jacq.). Os resultados revelaram que plantas cortadas a intervalos de 42 dias apresentaram maior percentagem de perfilhos decapitados (53,70%), menor vigor de rebrota (918,89 kg de MS/ha/21 dias), porém maior produção de matéria seca (12.652,67 kg/ha). O vigor de rebrota mostrou melhor correlação com a percentagem de perfilhos decapitados (r = -0,60*), do que com os teores de carboidratos totais não estruturais da base do colmo (r = -0,04) e da parte subterrânea (r = -0,39). Com base nas produções de matéria seca e de proteína bruta, bem como, na composição bromatológica, o capim-colonião poderia ser cortado, no período de janeiro a abril, a intervalos de 42 dias, independentemente das alturas adotadas (15 cm ou 30 cm de solo).Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraFavoretto, VanildoTonini Júnior, RicardoReis, Ricardo AndradeRodrigues, Luís Roberto de Andrade2014-04-17info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/17208Pesquisa Agropecuaria Brasileira; v.22, n.11/12, nov./dez. 1987; 1279-1285Pesquisa Agropecuária Brasileira; v.22, n.11/12, nov./dez. 1987; 1279-12851678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/17208/11527info:eu-repo/semantics/openAccess2014-10-15T18:16:05Zoai:ojs.seer.sct.embrapa.br:article/17208Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-10-15T18:16:05Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Effects of frequency and cutting height on dry-matter production, chemical composition, and regrowth of guinea grass
Efeito da altura e da frequência de corte sobre a produção, composição bromatológica e vigor de rebrota do capim-colonião
title Effects of frequency and cutting height on dry-matter production, chemical composition, and regrowth of guinea grass
spellingShingle Effects of frequency and cutting height on dry-matter production, chemical composition, and regrowth of guinea grass
Favoretto, Vanildo
management; cutting time; total non structural carbohydrates
manejo; época de corte; carboidratos totais não estruturais
title_short Effects of frequency and cutting height on dry-matter production, chemical composition, and regrowth of guinea grass
title_full Effects of frequency and cutting height on dry-matter production, chemical composition, and regrowth of guinea grass
title_fullStr Effects of frequency and cutting height on dry-matter production, chemical composition, and regrowth of guinea grass
title_full_unstemmed Effects of frequency and cutting height on dry-matter production, chemical composition, and regrowth of guinea grass
title_sort Effects of frequency and cutting height on dry-matter production, chemical composition, and regrowth of guinea grass
author Favoretto, Vanildo
author_facet Favoretto, Vanildo
Tonini Júnior, Ricardo
Reis, Ricardo Andrade
Rodrigues, Luís Roberto de Andrade
author_role author
author2 Tonini Júnior, Ricardo
Reis, Ricardo Andrade
Rodrigues, Luís Roberto de Andrade
author2_role author
author
author
dc.contributor.none.fl_str_mv

dc.contributor.author.fl_str_mv Favoretto, Vanildo
Tonini Júnior, Ricardo
Reis, Ricardo Andrade
Rodrigues, Luís Roberto de Andrade
dc.subject.por.fl_str_mv management; cutting time; total non structural carbohydrates
manejo; época de corte; carboidratos totais não estruturais
topic management; cutting time; total non structural carbohydrates
manejo; época de corte; carboidratos totais não estruturais
description This work was carried out at Faculdade de Ciências Agrárias e Veterinárias de Jaboticabal/ UNESP, São Paulo State, Brazil, in order to study the effect of two frequencies (35 and 42 days) and two cutting heights (15cm and 30cm from soil) on dry-matter production, chemical composition, and morphological and physiological characteristics of regrowth of guinea grass (Panicum maximum Jacq.) from January to April, 1984. Plants cut at intervals of 42 days showed higher percentage of decapitated tillers (53.70%), lower regrowth vigor (918.89kg DM/ha/21 days), and higher dry-matter production (12,652.67 kg/ha) than plants cut at 35 day Intervals. Regrowth vigor was better correlated with the percentage of decapitated tillers (r=- 0.60*) than with the levels of total nonstructural carbohydrates of stem basis (r = -0.04) and underground parts (r = -0.39). On the basis of dry-matter and crude protein productions, as well as chemical composition, guinea grass could be used from January to April at intervals of 42 days, independently of the cutting heights studies.
publishDate 2014
dc.date.none.fl_str_mv 2014-04-17
dc.type.none.fl_str_mv
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/17208
url https://seer.sct.embrapa.br/index.php/pab/article/view/17208
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/17208/11527
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
publisher.none.fl_str_mv Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
dc.source.none.fl_str_mv Pesquisa Agropecuaria Brasileira; v.22, n.11/12, nov./dez. 1987; 1279-1285
Pesquisa Agropecuária Brasileira; v.22, n.11/12, nov./dez. 1987; 1279-1285
1678-3921
0100-104x
reponame:Pesquisa Agropecuária Brasileira (Online)
instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron:EMBRAPA
instname_str Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron_str EMBRAPA
institution EMBRAPA
reponame_str Pesquisa Agropecuária Brasileira (Online)
collection Pesquisa Agropecuária Brasileira (Online)
repository.name.fl_str_mv Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
repository.mail.fl_str_mv pab@sct.embrapa.br || sct.pab@embrapa.br
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