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| Registros recuperados: 13 | |
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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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| 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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| 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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| Vilela,Hélio Henrique; Rezende,Adauton Vilela de; Vieira,Paulo de Figueiredo; Andrade,Gustavo Augusto; Evangelista,Antônio Ricardo; Almeida,Geraldo Benedito de Souza. |
| Objetivou-se neste trabalho avaliar as características bromatológicas de silagens de milho produzidas com milho em diversos estádios de maturação. Utilizou-se delineamento experimental de blocos casualizados, com quatro repetições, em esquema de parcelas subdivididas no tempo. Os cultivares Geneze 2004, Agroceres 1051, Pioneer 30S40 e Pioneer 30F90 foram ensilados nos seguintes estádios de maturação: grãos sem linha de leite (SLL); redução da linha de leite em 1/3 do grão (1/3 LL); 1/2 do grão (1/2 LL); 2/3 do grão (2/3 LL); e camada negra (CN) formada. A porcentagem de MS das silagens variou de 26,5 a 45,0%. As maiores perdas de efluente ocorreram nas silagens dos cultivares AG1051 e P30S40 no estádio sem linha de leite, que não apresentaram perdas a... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Digestibilidade; Linha de leite; Matéria seca. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982008000700008 |
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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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| 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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| 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; 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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| 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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| 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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| Rezende,Adauton Vilela de; Evangelista,Antônio Ricardo; Valeriano,Alexandre Rocha; Siqueira,Gustavo Rezende; Vilela,Hélio Henrique; Lopes,Jalison. |
| Características agronômicas e bromatológicas de seis cultivares de girassol (Helianthus annuus L.), colhidas aos 95 e 110 dias após a semeadura, foram avaliadas para produção de silagem. Utilizaram-se os híbridos Cargill C 11, Braskallb DK 180, Braskallb DK 4040, Morgon M 92007, Morgon M 742 e a variedade V 2000 da EMBRAPA. O delineamento foi o de blocos casualizados, com quatro repetições, em esquema fatorial 2 x 6, sendo considerados como fatores a idade de corte e as cultivares. As plantas foram picadas mecanicamente em partículas de 2,0 a 3,0 cm de tamanho e ensiladas por 30 dias em silos de "PVC" com dez centímetros de diâmetro e quarenta centímetros de comprimento. Avaliaram-se as produções e os teores de matéria seca (MS), concentrações de proteína... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Helianthus annuus; Maturação; Qualidade; Rendimento. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542007000300042 |
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| Registros recuperados: 13 | |
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