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| Registros recuperados: 11 | |
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| Difante,Gelson dos Santos; Nascimento Júnior,Domicio do; Silva,Sila Carneiro da; Euclides,Valéria Pacheco Batista; Montagner,Denise Baptaglin; Silveira,Márcia Cristina Teixeira da; Pena,Karine da Silva. |
| Desenvolveu-se este estudo com o objetivo de avaliar o acúmulo de forragem e as características morfogênicas e estruturais do capim-marandu submetido a combinações de alturas e intervalos de corte. O experimento foi realizado no período de agosto de 2003 a abril de 2004. Os tratamentos corresponderam a combinações entre duas alturas (15 e 30 cm) e três intervalos de corte (tempo correspondente para o aparecimento de três, quatro e cinco folhas por perfilho) e foram alocados às unidades experimentais em arranjo fatorial 2 × 3 e delineamento de blocos completos casualizados com três repetições. Foram avaliados o acúmulo total de forragem, o acúmulo de lâminas foliares, colmos e material morto, as variáveis morfogênicas e as estruturais, assim como a altura... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Alongamento de folhas; Altura do dossel; Aparecimento de folhas; Brachiaria brizantha; Ecofisiologia; Produção de forragem. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000500003 |
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| Rodrigues,Carlindo Santos; Nascimento Júnior,Domicio do; Detmann,Edenio; Silva,Sila Carneiro da; Sousa,Braulio Maia de Lana; Silveira,Márcia Cristina Teixeira da. |
| Foram avaliadas as características morfogênicas e estruturais de gramíneas forrageiras com o objetivo de agrupá-las, de acordo com seu padrão de desenvolvimento, em seus respectivos grupos funcionais. As gramíneas foram plantadas em parcelas de 1,0 m² com 24 plantas, em delineamento de blocos completos casualizados com três repetições. Os dados foram submetidos à análise de fatores, reduzindo as variáveis em quatro fatores: desenvolvimento de massa, mortalidade de perfilhos, estádio de desenvolvimento e longevidade foliar. Os dados foram submetidos à análise de agrupamento por otimização de Tocher adotando-se a distância euclidiana média como medida básica de dissimilaridade. As gramíneas foram agrupadas da seguinte forma: Verão - grupo I (Xaraés, Massai,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Análise multivariada; Avaliação de gramíneas; Características estruturais; Morfogênese. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000600010 |
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| Sousa,Braulio Maia de Lana; Nascimento Júnior,Domicio do; Monteiro,Hélida Christhine de Freitas; Silva,Sila Carneiro da; Vilela,Hélio Henrique; Silveira,Márcia Cristina Teixeira da; Rodrigues,Carlindo Santos; Sbrissia,André Fischer. |
| We assessed the accumulation dynamics of forage and its components in Elephant grass cv. Napier (Pennisetum purpureum Schum.) that were subjected to three post-grazing height treatments (30, 50, and 70 cm) from February through May 2009 (experiment one) and December 2009 through May 2010 (experiment two). In experiment one, the grazing events started when the light interception by the canopy reached 95%. The same was adopted for experiment two, except for the first grazing event, which was based on the height of the apical meristems of basal tillers. The experimental design for both experiments was a randomized complete block with three replications. The pastures that were managed at a post-grazing height of 30 cm exhibited lower rates of leaf and stem... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Grazing management; Growth; Light interception; Pennisetum purpureum; Senescence; Tiller categories. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013000900004 |
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| Montagner,Denise Baptaglin; Nascimento Júnior,Domicio do; Sousa,Braulio Maia de Lana; Vilela,Hélio Henrique; Silveira,Márcia Cristina Teixeira da; Euclides,Valéria Pacheco Batista; Silva,Sila Carneiro da; Carloto,Marciele Neves. |
| This study was conducted in order to evaluate the morphogenetic and structural characteristics of guinea grass cv. Mombasa under three post-grazing heights (intense - 30 cm, lenient - 50 cm and variable - 50 in spring-summer and 30 cm in autumn-winter) when sward light interception reached 95% during regrowth. Post-grazing heights were allocated to experimental units (0.25 ha) in a completely randomized block design with three replications. Post-grazing heights affected only leaf elongation rate and the number of live leaves. Pastures managed with variable post-grazing height showed higher leaf elongation rate in the summer of 2007. This management strategy also resulted in a higher number of live leaves. During the spring of 2006, plants showed lower leaf... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ecophysiology; Grazing management; Light interception; Panicum maximum cv. Mombasa; Post-grazing height. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000400008 |
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| Sousa,Braulio Maia de Lana; Santos,Manoel Eduardo Rozalino; Vilela,Hélio Henrique; Silveira,Márcia Cristina Teixeira da; Rocha,Gabriel de Oliveira; Freitas,Cássia Aparecida Soares; Silva,Natascha Almeida Marques da; Nascimento Júnior,Domicio do. |
| The study was carried out between March 1st and July 1st, 2011, in order to evaluate the tillering pattern of the deferred Piata palisade grass (Brachiaria brizantha cv. Piata). Three sward heights were evaluated in the beginning of the period of deferment: lower (20 cm), medium (30 cm) and higher (40 cm). The experimental design was of completely randomized blocks with three replications. The Piata palisade grass deferred with low initial height presented lower leaf area index, lower light interception and higher leaf angle in relation to the ones deferred with medium and high heights. The advance in the period of deferment increased the leaf area index and the light interception by the sward, in a way that the highest values were recorded in the periods... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brachiaria brizantha; Deferred grazing; Ecophysiology; Tiller. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013000100006 |
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| Sousa,Braulio Maia de Lana; Nascimento Júnior,Domicio do; Silva,Sila Carneiro da; Monteiro,Hélida Christhine de Freitas; Rodrigues,Carlindo Santos; Fonseca,Dilermando Miranda da; Silveira,Márcia Cristina Teixeira da; Sbrissia,André Fischer. |
| This work was performed aiming to evaluate the morphogenetic and structural characteristics of Andropogon gayanus cv. Planaltina species submitted to three cutting heights (20, 27 and 34 cm). The three cutting heights were allocated in experimental units (12 m²) in a complete randomized block design with three replications. The cuts were done when the light interception by the sward reached 95%. At this moment, the sward height revealed itself constant with values close to 50 cm. The lowest cutting height (20 cm) influenced negatively the final leaf blade length, the number of live leaves, the leaf lifespan, the stem elongation rate and the tiller population density, and it influenced positively the phyllochron and the leaf senescence rate. Probably, cuts... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Andropogon gayanus; Ecophysiology; Light interception; Morphogenesis; Sward height. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010001000006 |
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| Barbosa,Rodrigo Amorim; Nascimento Júnior,Domicio do; Vilela,Hélio Henrique; Sousa,Braulio Maia de Lana; Silva,Sila Carneiro da; Euclides,Valéria Pacheco Batista; Silveira,Márcia Cristina Teixeira da. |
| The objective of this research was to assess morphogenetic and structural characteristics of tillers of guinea grass cv. Tanzania at different ages. The pastures of guinea grass were managed in six pasture conditions related to the combination of three frequencies (90, 95, and 99% light interception) and two post-grazing heights (25 and 50 cm). In these six pastures conditions, three tiller ages were evaluated (young, mature, and old). The design was of completely randomized block with three replications. Young tillers exhibited higher leaf appearance rate and leaf elongation rate and, consequently, higher final leaf length and number of live leaves than mature and old tillers, regardless of the pasture condition. On pastures managed with 90 or 95% light... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Grazing management; Light interception; Panicum maximum; Sward height. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000700005 |
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| Zanine,Anderson de Moura; Nascimento Júnior,Domicio do; Sousa,Braulio Maia de Lana; Silveira,Márcia Cristina Teixeira da; Silva,Wilton Ladeira da; Santos,Manoel Eduardo Rozalino. |
| This study was carried out to analyze the tillering profile of Guinea grass (Panicum maximum cv. Tanzania) pastures subjected to two grazing frequencies (time necessary to intercept 90 and 95% of the incoming light) and two post-grazing heights (30 and 50 cm) in the period from November 2005 to October 2006. The experimental design was of completely randomized blocks with three replications, in a 2 × 2 factorial arrangement. At the end of the spring, pastures managed with 90% light interception showed greater tiller appearance rates in relation to pastures managed with 95%, regardless of post-grazing height. In the summer and fall, pastures managed with post-grazing height of 30 cm showed higher tiller appearance rates in comparison with pastures managed... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Grazing frequency; Grazing intensity; Panicum maximum; Plant ecophysiology. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013000300002 |
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| Silveira,Márcia Cristina Teixeira da; Nascimento Júnior,Domicio do; Silva,Sila Carneiro da; Euclides,Valéria Pacheco Batista; Montagner,Denise Bataglin; Sbrissia,André Fischer; Rodrigues,Carlindo Santos; Sousa,Bráulio Maia de Lana; Pena,Karine da Silva; Vilela,Hélio Henrique. |
| Understanding of the morphogenetic characteristics allows comprehension of aspects related to the form and function of forage plants, providing opportunities to identify potentially high productive plants and distinct defoliation management requirements. The objective of this experiment was to carry out a comparative study of ten tropical forage grasses using morphogenetic and structural variables. Treatments corresponded to grasses of the Panicum genus (P. maximum cultivars Tanzânia and Mombaça) and the Brachiaria genus (B. brizantha cultivars Piatã, Marandu, Xaraés, Capiporã and Arapoty; B. decumbens cultivar Basilisk; B. humidicola cultivars Comum and Tupi), evaluated under free growth conditions.. Response variables were leaf appearance and elongation... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brachiaria; Panicum; Morphogenetic and structural variables. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162010000200002 |
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| Silveira,Márcia Cristina Teixeira da; Silva,Sila Carneiro Da; Souza Júnior,Salim Jacaúna de; Barbero,Leandro Martins; Rodrigues,Carlindo Santos; Limão,Veridiana Aparecida; Pena,Karine da Silva; Nascimento Júnior,Domicio do. |
| Grazing management strategies affect not only herbage accumulation but also the efficiency of grazing. This study aimed to evaluate herbage accumulation (leaf, stem and dead material), grazing efficiency and losses of mulato grass (a Brachiaria ruziziensis × Brachiaria brizantha cv. Marandu hybrid) subjected to strategies of rotational stocking management. Treatments consisted of combinations between two post-grazing heights (15 and 20 cm) and two pre-grazing conditions (95 % and maximum canopy light interception (LI)) assigned to experimental units (1200-m² paddocks) according to a 2 × 2 factorial arrangement and a randomized complete block design, with four replications. The experiment was carried out from Jan 2008 to Mar 2009. Season of the year... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brachiaria spp.; Grazing efficiency; Light interception; Grazing management. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162013000400004 |
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| Registros recuperados: 11 | |
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