Morphogenesis and forage accumulation of Urochloa ruziziensis under nitrogen and potassium fertilization management
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Semina. Ciências Agrárias (Online) |
Texto Completo: | https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/34028 |
Resumo: | The objective of this study was to evaluate the effect of nitrogen and potassium fertilization on the morphogenetic and structural characteristics and production of Urochloa ruziziensis in two summer seasons (summer 1, 2010–2011and summer 2, 2011–2012) and the autumn and spring of 2011. A randomized complete block design with four treatments (0, 120, 240, and 360 kg ha-1 year-1 of N and K2O) and five replications was used, with repeated measurements in each season, in a split plot arrangement. The treatments were allocated to the plots and the seasons of the year to the subplots. The phyllochron (PHY),leaf appearance rate (LAR), leaf elongation rate (LER), stem elongation rate (SER), tiller population density (TPD), tiller appearance rate (TAR), tiller mortality rate (TMR), leaf growth rate (LGR), stem growth rate (SGR), senescence rate (SR), forage accumulation rate (FAR), and leaf accumulation rate (LAR) of Urochloa ruziziensis were evaluated. There was a positive quadratic effect for the PHY and ELR, with maximum values of 4.3 days leaf-1 and 0.43 cm tiller-1 day-1, respectively. While the SER increased linearly (0.0012 cm day-1 kg-1 of N and K2O) during summer 2. The TPD, TAR, and TMR increased linearly (averages of 1.53 tillers m-2, 0.04% and 0.02% per kg of N and K2O, respectively) with nitrogen and potassium fertilization during spring and both summer seasons. The LGR, SGR, and SR also increased linearly with N and K2O application rates during summer 2 (0.2809, 0.0082, and 0.0411 kg DM ha-1 day-1, per kg of N and K2O, respectively), while the FAR and LAR increased in a quadratic positive form (maximum values of 175 and 129 kg dry matter (DM) ha-1, corresponding to 294 and 237 kg ha-1 of N and K2O, respectively) during summer 2. Urochloa ruziziensis is a forage plant with a high DM production capacity during the summer and a high seasonal forage production. |
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Morphogenesis and forage accumulation of Urochloa ruziziensis under nitrogen and potassium fertilization managementMorfogênese e acúmulo de forragem da Urochloa ruziziensis sob manejo de adubação nitrogenada e potássicaTiller densityLeaf accumulation rateLeaf elongation rateSteam elongation rate.Densidade de perfilhosTaxa de alongamento de folhasTaxa de alongamento de colmosTaxa de acúmulo de folhas.The objective of this study was to evaluate the effect of nitrogen and potassium fertilization on the morphogenetic and structural characteristics and production of Urochloa ruziziensis in two summer seasons (summer 1, 2010–2011and summer 2, 2011–2012) and the autumn and spring of 2011. A randomized complete block design with four treatments (0, 120, 240, and 360 kg ha-1 year-1 of N and K2O) and five replications was used, with repeated measurements in each season, in a split plot arrangement. The treatments were allocated to the plots and the seasons of the year to the subplots. The phyllochron (PHY),leaf appearance rate (LAR), leaf elongation rate (LER), stem elongation rate (SER), tiller population density (TPD), tiller appearance rate (TAR), tiller mortality rate (TMR), leaf growth rate (LGR), stem growth rate (SGR), senescence rate (SR), forage accumulation rate (FAR), and leaf accumulation rate (LAR) of Urochloa ruziziensis were evaluated. There was a positive quadratic effect for the PHY and ELR, with maximum values of 4.3 days leaf-1 and 0.43 cm tiller-1 day-1, respectively. While the SER increased linearly (0.0012 cm day-1 kg-1 of N and K2O) during summer 2. The TPD, TAR, and TMR increased linearly (averages of 1.53 tillers m-2, 0.04% and 0.02% per kg of N and K2O, respectively) with nitrogen and potassium fertilization during spring and both summer seasons. The LGR, SGR, and SR also increased linearly with N and K2O application rates during summer 2 (0.2809, 0.0082, and 0.0411 kg DM ha-1 day-1, per kg of N and K2O, respectively), while the FAR and LAR increased in a quadratic positive form (maximum values of 175 and 129 kg dry matter (DM) ha-1, corresponding to 294 and 237 kg ha-1 of N and K2O, respectively) during summer 2. Urochloa ruziziensis is a forage plant with a high DM production capacity during the summer and a high seasonal forage production.O objetivo deste trabalho foi avaliar o efeito das adubações nitrogenada e potássica sobre as características morfogênicas e estruturais e de produção de Urochloa ruziziensis, em duas estações de verão (de 2010/2011 - verão 1; e de 2011/2012 - verão 2), outono e primavera de 2011. Foi utilizado o delineamento de blocos completos casualizados com quatro tratamentos (0, 120, 240 e 360 kg ha-1 ano-1 de N e K2O) e cinco repetições, sob medidas repetidas no tempo (estações do ano), num arranjo de parcelas subdivididas. Os tratamentos foram alocados às parcelas e as estações do86rte ano às subparcelas. Foram avaliados o filocrono (FILO), as taxas de aparecimento de folhas, as taxas de alongamento de folhas (TAlF) e de colmos (TAlC), a densidade populacional de perfilhos (DPP), as taxas de natalidade (TNP) e mortalidade (TMP) de perfilhos, as taxas de crescimento de folhas (TCF) e de colmos (TCC) e de senescência (TS), e as taxas de acúmulo de forragem (TAF) e de folhas (TAcFol) de Urochloa ruziziensis. Houve efeito quadrático negativo para FILO e positivo TAlF, com valores mínimo de 4,3 dias folha-1para 208 kg ha-1 de N e de K2O,e máximo de 0,43 cm perfilho-1 dia-1para 234 kg ha-1 de N e K2O, respectivamente, enquanto que a TAlC aumentou linearmente (0,0012 cm pefilho-1 dia-1 por kg de N e K2O) durante o verão 2. A DPP, as TNP e TMP aumentaram linearmente (médias de 1,53 perfilhos m-2, 0,04% e 0,02% por kg de N e K2O, respectivamente) com os tratamentos durante as estações de primavera e verões 1 e 2. As TCF, TCCe TS também aumentaram linearmente às doses de N e K2O (0,2809; 0,0082 e 0,0411kg ha-1 dia-1 de MS por kg de N e K2O, respectivamente), enquanto as TAF e TAFol aumentaram de forma quadrática positiva (valores máximos de 175 e 129 kg ha-1 dia-1 de MS, correspondentes a 294 e 237 kg ha-1 de N e K2O, respectivamente) durante o verão 2. A Urochlo aruziziensis configura-se como planta forrageira de alta capacidade de produção de massa seca durante o verão e de alta estacionalidade de produção forrageira.UEL2019-06-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionpesquisa empírica de campoapplication/pdfhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/3402810.5433/1679-0359.2019v40n4p1605Semina: Ciências Agrárias; Vol. 40 No. 4 (2019); 1605-1618Semina: Ciências Agrárias; v. 40 n. 4 (2019); 1605-16181679-03591676-546Xreponame:Semina. Ciências Agrárias (Online)instname:Universidade Estadual de Londrina (UEL)instacron:UELenghttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/34028/25502Copyright (c) 2019 Semina: Ciências Agráriashttp://creativecommons.org/licenses/by-nc/4.0info:eu-repo/semantics/openAccessLima, Karla Rodrigues deCarvalho, Carlos Augusto Brandão deAzevedo, Flavio Henrique VidalCampos, Fabio Prudêncio deSilva, Aline Barros daDias, Ana Carla Chaves2022-10-19T12:49:32Zoai:ojs.pkp.sfu.ca:article/34028Revistahttp://www.uel.br/revistas/uel/index.php/semagrariasPUBhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/oaisemina.agrarias@uel.br1679-03591676-546Xopendoar:2022-10-19T12:49:32Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)false |
dc.title.none.fl_str_mv |
Morphogenesis and forage accumulation of Urochloa ruziziensis under nitrogen and potassium fertilization management Morfogênese e acúmulo de forragem da Urochloa ruziziensis sob manejo de adubação nitrogenada e potássica |
title |
Morphogenesis and forage accumulation of Urochloa ruziziensis under nitrogen and potassium fertilization management |
spellingShingle |
Morphogenesis and forage accumulation of Urochloa ruziziensis under nitrogen and potassium fertilization management Lima, Karla Rodrigues de Tiller density Leaf accumulation rate Leaf elongation rate Steam elongation rate. Densidade de perfilhos Taxa de alongamento de folhas Taxa de alongamento de colmos Taxa de acúmulo de folhas. |
title_short |
Morphogenesis and forage accumulation of Urochloa ruziziensis under nitrogen and potassium fertilization management |
title_full |
Morphogenesis and forage accumulation of Urochloa ruziziensis under nitrogen and potassium fertilization management |
title_fullStr |
Morphogenesis and forage accumulation of Urochloa ruziziensis under nitrogen and potassium fertilization management |
title_full_unstemmed |
Morphogenesis and forage accumulation of Urochloa ruziziensis under nitrogen and potassium fertilization management |
title_sort |
Morphogenesis and forage accumulation of Urochloa ruziziensis under nitrogen and potassium fertilization management |
author |
Lima, Karla Rodrigues de |
author_facet |
Lima, Karla Rodrigues de Carvalho, Carlos Augusto Brandão de Azevedo, Flavio Henrique Vidal Campos, Fabio Prudêncio de Silva, Aline Barros da Dias, Ana Carla Chaves |
author_role |
author |
author2 |
Carvalho, Carlos Augusto Brandão de Azevedo, Flavio Henrique Vidal Campos, Fabio Prudêncio de Silva, Aline Barros da Dias, Ana Carla Chaves |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Lima, Karla Rodrigues de Carvalho, Carlos Augusto Brandão de Azevedo, Flavio Henrique Vidal Campos, Fabio Prudêncio de Silva, Aline Barros da Dias, Ana Carla Chaves |
dc.subject.por.fl_str_mv |
Tiller density Leaf accumulation rate Leaf elongation rate Steam elongation rate. Densidade de perfilhos Taxa de alongamento de folhas Taxa de alongamento de colmos Taxa de acúmulo de folhas. |
topic |
Tiller density Leaf accumulation rate Leaf elongation rate Steam elongation rate. Densidade de perfilhos Taxa de alongamento de folhas Taxa de alongamento de colmos Taxa de acúmulo de folhas. |
description |
The objective of this study was to evaluate the effect of nitrogen and potassium fertilization on the morphogenetic and structural characteristics and production of Urochloa ruziziensis in two summer seasons (summer 1, 2010–2011and summer 2, 2011–2012) and the autumn and spring of 2011. A randomized complete block design with four treatments (0, 120, 240, and 360 kg ha-1 year-1 of N and K2O) and five replications was used, with repeated measurements in each season, in a split plot arrangement. The treatments were allocated to the plots and the seasons of the year to the subplots. The phyllochron (PHY),leaf appearance rate (LAR), leaf elongation rate (LER), stem elongation rate (SER), tiller population density (TPD), tiller appearance rate (TAR), tiller mortality rate (TMR), leaf growth rate (LGR), stem growth rate (SGR), senescence rate (SR), forage accumulation rate (FAR), and leaf accumulation rate (LAR) of Urochloa ruziziensis were evaluated. There was a positive quadratic effect for the PHY and ELR, with maximum values of 4.3 days leaf-1 and 0.43 cm tiller-1 day-1, respectively. While the SER increased linearly (0.0012 cm day-1 kg-1 of N and K2O) during summer 2. The TPD, TAR, and TMR increased linearly (averages of 1.53 tillers m-2, 0.04% and 0.02% per kg of N and K2O, respectively) with nitrogen and potassium fertilization during spring and both summer seasons. The LGR, SGR, and SR also increased linearly with N and K2O application rates during summer 2 (0.2809, 0.0082, and 0.0411 kg DM ha-1 day-1, per kg of N and K2O, respectively), while the FAR and LAR increased in a quadratic positive form (maximum values of 175 and 129 kg dry matter (DM) ha-1, corresponding to 294 and 237 kg ha-1 of N and K2O, respectively) during summer 2. Urochloa ruziziensis is a forage plant with a high DM production capacity during the summer and a high seasonal forage production. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-06-07 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion pesquisa empírica de campo |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/34028 10.5433/1679-0359.2019v40n4p1605 |
url |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/34028 |
identifier_str_mv |
10.5433/1679-0359.2019v40n4p1605 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/34028/25502 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2019 Semina: Ciências Agrárias http://creativecommons.org/licenses/by-nc/4.0 info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2019 Semina: Ciências Agrárias http://creativecommons.org/licenses/by-nc/4.0 |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
UEL |
publisher.none.fl_str_mv |
UEL |
dc.source.none.fl_str_mv |
Semina: Ciências Agrárias; Vol. 40 No. 4 (2019); 1605-1618 Semina: Ciências Agrárias; v. 40 n. 4 (2019); 1605-1618 1679-0359 1676-546X reponame:Semina. Ciências Agrárias (Online) instname:Universidade Estadual de Londrina (UEL) instacron:UEL |
instname_str |
Universidade Estadual de Londrina (UEL) |
instacron_str |
UEL |
institution |
UEL |
reponame_str |
Semina. Ciências Agrárias (Online) |
collection |
Semina. Ciências Agrárias (Online) |
repository.name.fl_str_mv |
Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL) |
repository.mail.fl_str_mv |
semina.agrarias@uel.br |
_version_ |
1799306080360071168 |