Morphogenetic and structural characteristics of signal grass in response to liming and defoliation severity
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Pesquisa Agropecuária Tropical (Online) |
Texto Completo: | https://revistas.ufg.br/pat/article/view/49212 |
Resumo: | The control of soil acidity through liming and the adoption of adequate management are essential to the maintenance of pastures productivity. The morphogenetic and structural characteristics of Urochloa decumbens cv. Basilisk, in canopies with (0.7 t ha-1 and 1.0 t ha-1) or without liming and subjected to severe or lenient cuttings (stubble corresponding to 40 % or 60 % of the pre-harvest height, respectively), were evaluated throughout regrowth, during late spring and summer. Treatments were distributed in a 3 x 2 factorial arrangement, in a completely randomized block design, with 3 replications (80 m² plots). Increased liming rates do not result in benefits to the herbage mass, tiller population density or a faster canopy recovering. The average tiller weight decreases, while the duration of regrowth linearly increases, with increasing liming rates, particularly in late spring. Stem elongation and leaf senescence rates increase and leaf elongation rates decrease from the 15th day of regrowth, regardless of the liming rates or defoliation severities. Post-harvest heights ranging from 40 % to 60 % of the pre-harvest height showed to be within the tolerance limits to defoliation of U. decumbens. The liming rates adopted had only marginal impacts on the morphogenetic characteristics of U. decumbens. |
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Morphogenetic and structural characteristics of signal grass in response to liming and defoliation severityCaracterísticas morfogênicas e estruturais de capim-braquiária em resposta a calagem e severidade de corteUrochloa decumbens cv. Basiliskstem elongationregrowth dynamicslight interception.Urochloa decumbens cv. Basiliskalongamento de colmosdinâmica de rebrotaçãointerceptação luminosaThe control of soil acidity through liming and the adoption of adequate management are essential to the maintenance of pastures productivity. The morphogenetic and structural characteristics of Urochloa decumbens cv. Basilisk, in canopies with (0.7 t ha-1 and 1.0 t ha-1) or without liming and subjected to severe or lenient cuttings (stubble corresponding to 40 % or 60 % of the pre-harvest height, respectively), were evaluated throughout regrowth, during late spring and summer. Treatments were distributed in a 3 x 2 factorial arrangement, in a completely randomized block design, with 3 replications (80 m² plots). Increased liming rates do not result in benefits to the herbage mass, tiller population density or a faster canopy recovering. The average tiller weight decreases, while the duration of regrowth linearly increases, with increasing liming rates, particularly in late spring. Stem elongation and leaf senescence rates increase and leaf elongation rates decrease from the 15th day of regrowth, regardless of the liming rates or defoliation severities. Post-harvest heights ranging from 40 % to 60 % of the pre-harvest height showed to be within the tolerance limits to defoliation of U. decumbens. The liming rates adopted had only marginal impacts on the morphogenetic characteristics of U. decumbens.O controle da acidez do solo por meio de calagem, aliado à adoção de manejo correto, são fatores essenciais para a manutenção da produtividade de pastagens. Avaliaram-se, ao longo da rebrotação, no final da primavera e verão, as características morfogênicas e estruturais da Urochloa decumbens cv. Basilisk, em dosséis que receberam (0,7 t ha-1 e 1,0 t ha-1) ou não calagem, submetidos a cortes severos ou lenientes (resíduo correspondente a 40 % ou 60 % da altura pré-corte, respectivamente). Os tratamentos foram distribuídos em arranjo fatorial 3 x 2, em delineamento de blocos completos casualizados, com 3 repetições (parcelas de 80 m²). O aumento nas doses de calcário não resulta em maior massa de forragem, densidade populacional de perfilhos ou recuperação mais rápida do dossel. O peso médio de perfilhos diminui, enquanto a duração da rebrotação aumenta linearmente, com aumentos nas doses de calcário, particularmente no final da primavera. Aumentos nas taxas de alongamento de colmos e senescência de folhas e diminuição nas taxas de alongamento de folhas ocorrem a partir do 15º dia de rebrotação, independentemente da quantidade de calcário ou severidade de corte. Severidades de corte variando de 40 % a 60 % da altura pré-corte mostraram-se dentro dos limites de tolerância à desfolhação em U. decumbens. As doses de calcário adotadas tiveram apenas impactos marginais nas características morfogenênicas de U. decumbens.Escola de Agronomia - Universidade Federal de Goiás2018-02-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionAvaliado por paresapplication/pdfhttps://revistas.ufg.br/pat/article/view/49212Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics]; v. 48, n. 1, Jan./Mar. 2018; 1-11Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics); v. 48, n. 1, jan./mar. 2018; 1-11Pesquisa Agropecuária Tropical; v. 48, n. 1, jan./mar. 2018; 1-111983-4063reponame:Pesquisa Agropecuária Tropical (Online)instname:Universidade Federal de Goiás (UFG)instacron:UFGenghttps://revistas.ufg.br/pat/article/view/49212/25153Copyright (c) 2018 Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics)info:eu-repo/semantics/openAccessElgalise Techio Pereira, LilianRodrigues Herling, ValdoCesar Avanzi, JuniorCarneiro da Silva, Sila2020-07-13T18:57:43Zoai:ojs.revistas.ufg.br:article/49212Revistahttps://revistas.ufg.br/patPUBhttps://revistas.ufg.br/pat/oaiaseleguini.pat@gmail.com||mgoes@agro.ufg.br1983-40631517-6398opendoar:2024-05-21T19:56:18.163979Pesquisa Agropecuária Tropical (Online) - Universidade Federal de Goiás (UFG)true |
dc.title.none.fl_str_mv |
Morphogenetic and structural characteristics of signal grass in response to liming and defoliation severity Características morfogênicas e estruturais de capim-braquiária em resposta a calagem e severidade de corte |
title |
Morphogenetic and structural characteristics of signal grass in response to liming and defoliation severity |
spellingShingle |
Morphogenetic and structural characteristics of signal grass in response to liming and defoliation severity Elgalise Techio Pereira, Lilian Urochloa decumbens cv. Basilisk stem elongation regrowth dynamics light interception. Urochloa decumbens cv. Basilisk alongamento de colmos dinâmica de rebrotação interceptação luminosa |
title_short |
Morphogenetic and structural characteristics of signal grass in response to liming and defoliation severity |
title_full |
Morphogenetic and structural characteristics of signal grass in response to liming and defoliation severity |
title_fullStr |
Morphogenetic and structural characteristics of signal grass in response to liming and defoliation severity |
title_full_unstemmed |
Morphogenetic and structural characteristics of signal grass in response to liming and defoliation severity |
title_sort |
Morphogenetic and structural characteristics of signal grass in response to liming and defoliation severity |
author |
Elgalise Techio Pereira, Lilian |
author_facet |
Elgalise Techio Pereira, Lilian Rodrigues Herling, Valdo Cesar Avanzi, Junior Carneiro da Silva, Sila |
author_role |
author |
author2 |
Rodrigues Herling, Valdo Cesar Avanzi, Junior Carneiro da Silva, Sila |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Elgalise Techio Pereira, Lilian Rodrigues Herling, Valdo Cesar Avanzi, Junior Carneiro da Silva, Sila |
dc.subject.por.fl_str_mv |
Urochloa decumbens cv. Basilisk stem elongation regrowth dynamics light interception. Urochloa decumbens cv. Basilisk alongamento de colmos dinâmica de rebrotação interceptação luminosa |
topic |
Urochloa decumbens cv. Basilisk stem elongation regrowth dynamics light interception. Urochloa decumbens cv. Basilisk alongamento de colmos dinâmica de rebrotação interceptação luminosa |
description |
The control of soil acidity through liming and the adoption of adequate management are essential to the maintenance of pastures productivity. The morphogenetic and structural characteristics of Urochloa decumbens cv. Basilisk, in canopies with (0.7 t ha-1 and 1.0 t ha-1) or without liming and subjected to severe or lenient cuttings (stubble corresponding to 40 % or 60 % of the pre-harvest height, respectively), were evaluated throughout regrowth, during late spring and summer. Treatments were distributed in a 3 x 2 factorial arrangement, in a completely randomized block design, with 3 replications (80 m² plots). Increased liming rates do not result in benefits to the herbage mass, tiller population density or a faster canopy recovering. The average tiller weight decreases, while the duration of regrowth linearly increases, with increasing liming rates, particularly in late spring. Stem elongation and leaf senescence rates increase and leaf elongation rates decrease from the 15th day of regrowth, regardless of the liming rates or defoliation severities. Post-harvest heights ranging from 40 % to 60 % of the pre-harvest height showed to be within the tolerance limits to defoliation of U. decumbens. The liming rates adopted had only marginal impacts on the morphogenetic characteristics of U. decumbens. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-02-05 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Avaliado por pares |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://revistas.ufg.br/pat/article/view/49212 |
url |
https://revistas.ufg.br/pat/article/view/49212 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://revistas.ufg.br/pat/article/view/49212/25153 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2018 Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics) info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2018 Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics) |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Escola de Agronomia - Universidade Federal de Goiás |
publisher.none.fl_str_mv |
Escola de Agronomia - Universidade Federal de Goiás |
dc.source.none.fl_str_mv |
Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics]; v. 48, n. 1, Jan./Mar. 2018; 1-11 Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics); v. 48, n. 1, jan./mar. 2018; 1-11 Pesquisa Agropecuária Tropical; v. 48, n. 1, jan./mar. 2018; 1-11 1983-4063 reponame:Pesquisa Agropecuária Tropical (Online) instname:Universidade Federal de Goiás (UFG) instacron:UFG |
instname_str |
Universidade Federal de Goiás (UFG) |
instacron_str |
UFG |
institution |
UFG |
reponame_str |
Pesquisa Agropecuária Tropical (Online) |
collection |
Pesquisa Agropecuária Tropical (Online) |
repository.name.fl_str_mv |
Pesquisa Agropecuária Tropical (Online) - Universidade Federal de Goiás (UFG) |
repository.mail.fl_str_mv |
aseleguini.pat@gmail.com||mgoes@agro.ufg.br |
_version_ |
1799874819852861440 |