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| Registros recuperados: 16 | |
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| Sousa,Braulio Maia de Lana; Vilela,Hélio Henrique; Santos,Manoel Eduardo Rozalino; Rodrigues,Carlindo Santos; Santos,Andreza Luzia; Nascimento Júnior,Domicio do; Assis,Camila Zimmer de; Rocha,Gabriel de Oliveira. |
| This experiment was conducted to estimate the effects of nitrogen fertilization associated with the initial height of the Piata palisade grass on the number and structural characteristics of individual tillers after the deferment period. An area with Brachiaria brizantha cv. Piata measuring approximately 288 m² was used. Combinations of levels of nitrogen fertilization (0, 75 and 150 kg/ha of nitrogen) and initial heights of the sward (low - 20 cm, medium - 30 cm and high - 40 cm) were evaluated. The experimental design was of completely randomized blocks in subdivided plots with three replications. The number of vegetative tillers, the stem length of the vegetative, reproductive and dead tillers, and the number of dead leaves of the reproductive and the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brachiaria brizantha; Seasonal production; Tillering; Tiller population density. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000700009 |
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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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| Sousa,Braulio Maia de Lana; Nascimento Júnior,Domicio do; Monteiro,Hélida Christhine de Freitas; Fonseca,Dilermando Miranda da. |
| This study was conducted to evaluate the daily production of forage and its morphological components, as well as the potential of forage utilization in pastures of Pennisetum purpureum cv. Napier managed with three post-grazing heights (30, 50 and 70 cm). Two experiments were carried out: one from February to May 2009 and another from December 2009 to May 2010, characterizing months of summer and fall. The experimental design was of completely randomized blocks with three replicates. The grazing was performed by crossbred heifers of approximately 270 kg body weight, when the sward intercepted 95% of the incoming light. In both experiments, the pastures managed with post-grazing height of 30 cm, in the summer months (December to March), presented lower... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Light interception; Pasture management; Pasture structure; Pennisetum purpureum. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000800006 |
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| Vilela,Hélio Henrique; Sousa,Braulio Maia de Lana; Santos,Manoel Eduardo Rozalino; Santos,Andreza Luzia; Assis,Camila Zimmer de; Rocha,Gabriel de Oliveira; Faria,Bruno Damaceno; Nascimento Júnior,Domicio do. |
| The objective of this study was to determine the deferment period and the most adequate initial sward height of Brachiaria brizantha cv. Piatã for deferment in the region of Viçosa, Minas Gerais. For so, the following characteristics were evaluated: masses and bulk density of forage and its morphological components, light interception by the sward, leaf area index, leaf angle, sward and extended tiller height and falling index of the deferred piatã grass. The three deferment periods assessed (65, 85 and 105 days) were randomized to the plots and the three sward heights (20, 30 and 40 cm), randomized in the subplots. The experimental design was of completely randomized blocks, with three replicates, in a subdivided plots arrangement. Masses of forage, green... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brachiaria brizantha; Forage bulk density; Leaf area index; Light interception; Pasture management. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000700010 |
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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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| 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; 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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| Montagner,Denise Baptaglin; Nascimento Júnior,Domicio do; Sousa,Braulio Maia de Lana; Vilela,Hélio Henrique; Euclides,Valéria Pacheco Batista; Silva,Sila Carneiro da; Sbrissia,André Fischer; Carloto,Marciele Neves. |
| The objective of this research was to evaluate the effects of tiller age on morphogenic and structural characteristics of guinea grass cv. Mombaca subjected to intermittent stocking and three stubble heights: 30 cm, 50 cm and 50-30 cm. Stubble heights were assigned to experimental units in a completely randomized block design with three replicates. Grazing was performed when canopy intercepted 95% of light incidence. Leaf appearance rate, leaf elongation rate and number of live leaves per tiller were higher in the summer when compared with the winter. Contrarily, stem elongation rate, phyllochron and leaf lifespan were lower in the summer when compared with the winter. During the summer, young tillers had higher leaf appearance and elongation rates when... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ecophysiology; Light interception; Panicum maximum; Stubble height. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011001000006 |
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| Sousa,Braulio Maia de Lana; Nascimento Júnior,Domicio do; Rodrigues,Carlindo Santos; Monteiro,Hélida Christhine de Freitas; Silva,Sila Carneiro da; Fonseca,Dilermando Miranda da; Sbrissia,André Fischer. |
| The objective of this work was to evaluate the morphogenetic and structural characteristics of xaraes palisadegrass submitted to three cutting heights (15, 20 and 25 cm) when the sward reached 95% of light interception during regrowth. The experiment was carried out according to a complete randomized block design with three replications. The sward surface height under the cutting condition of 95% of light interception was very homogeneous with values around 30 cm. The increase in cutting height reduced the leaf elongation rate and the number of live leaves but increased stem elongation rate. As the cutting criterion was the same, before the intense competition for light, the variation in the cutting severity had a small influence on the morphogenetic and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brachiaria brizantha; Ecophysiology; Grazing management; Light interception; Morphogenesis; Sward height. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000100008 |
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| Barbosa,Rodrigo Amorim; Nascimento Júnior,Domicio do; Vilela,Hélio Henrique; Silva,Sila Carneiro da; Euclides,Valéria Pacheco Batista; Sbrissia,André Fischer; Sousa,Braulio Maia de Lana. |
| It was evaluated the morphogenic and structural characteristics of guinea grass under rotational at three grazing intervals and two defoliation intensities. Grazing intervals corresponded to the time needed by the forage canopy to reach 90, 95 or 100% of incident light interception during regrowth and they were evaluated combined to two defoliation severities (post-grazing conditions, 25 and 50 cm of height), being allocated to experimental units according to a complete randomized design, with three replicates and 3 × 2 factorial arrangement. The experiment was conducted from July 2003 to May 2004. For evaluation of morphogenetic and structural characteristics, ten tillers per experimental unit were selected. Morphogenetic and structural characteristics... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Canopy height; Grazing management; Light interception; Panicum maximum. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000500002 |
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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; Vilela,Hélio Henrique; Santos,Andreza Luzia; Santos,Manoel Eduardo Rozalino; Nascimento Júnior,Domicio do; Assis,Camila Zimmer de; Faria,Bruno Damaceno; Rocha,Gabriel de Oliveira. |
| The objective of this study was to evaluate the mass of the forage and of the morphological components, and the sward structure in Piata palisadegrass (Brachiaria brizantha cv. Piata) deferred in function of different initial heights and nitrogen levels. Two levels of nitrogen (75 and 150 kg/ha) and one control without fertilization associated to three initial deferring heights (20, 30, and 40 cm) were evaluated. The design was of completely randomized blocks with three replications in a subdivided plot scheme. A raise in the initial deferment height and in the fertilization elevated the sward and extended tiller heights, the leaf area index, and the light interception by the sward. The piata palisadegrass deferred with an initial height of 40 cm presented... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brachiaria brizantha; Ecophysiology; Grassland management. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000500008 |
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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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| Registros recuperados: 16 | |
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