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Características estruturais de pastos de Brachiaria decumbens diferidos por 140 dias e estratégias de adubação nitrogenada - doi: 10.4025/actascianimsci.v33i4.10212 Animal Sciences
Teixeira, Fábio Andrade; UESB; Bonomo, Paulo; UESB; Pires, Aureliano José Vieira; UESB; Silva, Fabiano Ferreira; UESB; Martins, Giselle Caroline Fernandes; UESB; Cardoso, Elisângela Oliveira; UESB.
O objetivo deste trabalho foi avaliar as características estruturais de pastos de Brachiaria decumbens diferidos por 140 dias, visando determinar a estratégia mais adequada de adubação nitrogenada. Foram estudadas quatro estratégias de adubação no início e no final do verão (0-0, 100-0, 50-50, 0-100 kg ha-1 de N), respectivamente, com quatro repetições. Para avaliação das densidades volumétricas, a forragem foi colhida em três estratos: estrato A- acima de 40 cm; B- 20-40 cm; e C- 0-20 cm do solo. O índice de tombamento foi menor (p < 0,05) para a estratégia de adubação com 100 kg ha-1 de N aplicados no final do verão. No estrato B foram observadas maiores (p < 0,05) densidades de forragem total, de lâmina foliar e de colmo verde para estratégia de...
Tipo: Pesquisa de campo Palavras-chave: Forragicultura e pastagens acamamento; Densidade; Diferimento; Pastagem; Perfilho; Ureia falling; Density; Deferment; Grazing; Tiller; Urea.
Ano: 2011 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/10212
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Características morfogênicas de Braquiárias em resposta a diferentes adubações - DOI: 10.4025/actasciagron.v31i2.7032 Agronomy
Santos, Luciana Carvalho; UESB; Bonomo, Paulo; UESB; Silva, Verusca Bulhões; UESB; Patês, Neusete Maria da Silva; UESB; Silva, Cristina Cavalcante Félix da; Secretaria de Estado da Agricultura e do Desenvolvimento Agrário; Pires, Aureliano José Vieira; UESB.
As características morfogênicas da Brachiaria brizantha e Brachiaria decumbens foram estudadas em função de diferentes adubações. O estudo foi conduzido em casa-de-vegetação e foram avaliadas duas cultivares de Braquiária (B. Brizantha cv. Marandu e B. decumbens cv. Basilisk) e cinco diferentes adubações (sem adubo, P, N, NP e NK). O ensaio foi conduzido em esquema fatorial 2 x 5, em delineamento inteiramente ao acaso, com quatro repetições. As avaliações morfogênicas englobaram as taxas de aparecimento foliar, alongamento foliar e filocrono. Foi bastante expressiva a resposta das cultivares quanto às variáveis estudadas em relação ao suprimento de nitrogênio, porém não houve resposta para fósforo e potássio. O capim-Basilisk se mostrou mais produtivo que...
Palavras-chave: 5.01.00.00-9 Agronomia adubo; Brachiaria brizantha; Brachiaria decumbens; Folhas; Perfilho fertilizer; Brachiaria brizantha; Brachiaria decumbens; Leaves; Tiller.
Ano: 2009 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/7032
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Development of maize and palisadegrass plants cultivated in intercrop under water deficit R. Bras. Zootec.
Araujo,Leandro Coelho de; Santos,Patrícia Menezes; Mendonça,Fernando Campos; Lima,Nino Rodrigo Cabral de Barros.
The objective of this work was to evaluate the development and productive traits of palisadegrass single cultivated or intercropped with corn, in addition to corn intercropped with pasture, under water deficit at different development stages of the plants. It was used a complete block experimental design with split plots and three replicates. Periods of water deficit were placed in the plots and types of cultivation were placed in the subplots. Irrigation was stopped at germination and initial tillering of palisadegrass and at V4 and V15 stages of corn and returned when soil moisture was 40% of available water capacity. Tiller density and palisadegrass height were evaluated weekly. Dry matter (DM) of fractions of herbage mass as well as leaf area of the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Brachiaria brizantha; Integration; Tiller; Zea mays.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000700001
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Grazing patterns on signalgrass pasture according to location of cattle feces R. Bras. Zootec.
Santos,Manoel Eduardo Rozalino; Fonseca,Dilermando Miranda da; Gomes,Virgílio Mesquita; Braz,Thiago Gomes dos Santos; Silva,Simone Pedro da; Albino,Ronan Lopes; Santos,Andreza Luzia; Silva,Guilherme Portes.
This study was conducted to evaluate the defoliation patterns on B. decumbens cv. Basilisk (signalgrass) tiller as a function of influence of feces deposited naturally by cattle. The signalgrass was managed with an average height of 25 cm, under continuous stocking and variable stocking rate. Interval and intensity of defoliation, grazing efficiency and forage loss were evaluated in two sites on pasture - one close and the other distant from feces. The completely randomized block design with three replications was adopted. The defoliation rate of the pasture site close to feces was 40% lower than at that distant from feces. This response pattern was similar to defoliation intensity of leaf blade. The leaf blade of the tiller close to feces also achieved...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Brachiaria decumbens; Grazing; Sward structure; Tiller.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000400010
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Nitrogen and potassium supply and the morphogenic and productive characteristics of marandu palisadegrass R. Bras. Zootec.
Megda,Marcio Mahmoud; Monteiro,Francisco Antonio.
The objective of this work was to study morphogenic characteristics, and dry matter production of roots and shoots of marandu palisadegrass (Brachiaria brizantha cv. Marandu) submitted to combinations of nitrogen and potassium, in a nutritive solution, employing silica as substrate. The experiment was carried out in a greenhouse during the summer. It was used a 5² fractionated factorial scheme with 13 combinations of nitrogen and potassium, which were distributed in a randomized block design, with four replications. The nitrogen × potassium interaction was significant for the number of tillers and leaves, for leaf area, for shoots and root section dry mass, for total length and surface and specific length and surface in the roots. Production of aerial part...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Brachiaria brizantha; Leaf; Nutrient solution; Root; Shoot; Tiller.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010000800007
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Piata palisade grass deferred with two distinct initial heights: luminous environment and tillering dynamics R. Bras. Zootec.
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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Tiller population density in deferred Urochroa decumbens pasture and strategies for nitrogen fertilization - doi: 10.4025/actascianimsci.v35i1.10243 Animal Sciences
Teixeira, Fábio Andrade; Universidade Estadual do Sudoeste da Bahia; Bonomo, Paulo; Universidade Estadual do Sudoeste da Bahia; Pires, Aureliano José Vieira; Universidade Estadual do Sudoeste da Bahia; Silva, Fabiano Ferreira; Universidade Estadual do Sudoeste da Bahia; Abreu Filho, George; Universidade Estadual do Sudoeste da Bahia; Viana, Pablo Teixeira; Universidade Estadual do Sudoeste da Bahia.
The objective of this work was to evaluate the tiller population density in Urochroa decumbens pasture deferred for 95 and 140 days, aiming to determine the best strategy for nitrogen fertilization. Four fertilization strategies at the beginning and end of summer (0-0, 100-0, 50-50, 0-100 kg ha-1 of N) were studied, respectively, with four repetitions. For the pastures deferred for 95 days, the population densities of vegetative tillers were greater (p &lt; 0.05) for the strategy 0-100. At the end of the deferment period, the weight of the vegetative tillers per hectare was greater for the strategy 0-100, followed by the strategy 50-50. The densities of vegetative tillers, evaluated in the pastures deferred for 140 days, were greater (p &lt; 0.05)...
Tipo: Pesquisa de campo Palavras-chave: Density; Deferment; Grazing; Tiller; Urea.
Ano: 2013 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/10243
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Tiller size/population density compensation in grazed Coastcross bermudagrass swards Scientia Agricola
Sbrissia,André Fischer; Silva,Sila Carneiro da; Carvalho,Carlos Augusto Brandão de; Carnevalli,Roberta Aparecida; Pinto,Luiz Felipe de Moura; Fagundes,Jaílson Lara; Pedreira,Carlos Guilherme Silveira.
Several compensatory mechanisms in pastures do not allow optimisation of responses from the processes of herbage production and utilisation. Compensation due to tiller size/density relationships is one of these mechanisms. This experiment evaluated this process for Coastcross bermudagrass and compared the responses to those reported for temperate forages. Treatments were "steady state" sward surface heights of 5, 10, 15, and 20 cm that were maintained from August, 1998, through July, 1999 by sheep grazing. The experimental design was a randomised complete block, replicated four times. Pasture responses were evaluated on four separate dates (15/12/1998, 25/01/1999, 07/04/1999 and 04/07/1999) with respect to: tiller population density, tiller weight, leaf...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cynodon; LAI; Tiller; Morphology.
Ano: 2001 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162001000400002
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Tillering and biomass partitioning of Mombasa grass under nitrogen fertilization during regrowth R. Bras. Zootec.
Garcez Neto,Américo Fróes; Gobbi,Kátia Fernanda; Silva,Janielen da; Santos,Tiago Machado dos.
Biomass partitioning in forages is highly variable during plant development and with the rate of nutrient supply. This study was carried out with the objective to evaluate the tillering pattern and biomass partitioning of Mombasa grass (Megathyrsus maximus cv. Mombaça) subjected to rates of nitrogen (N) during regrowth. The treatments consisted of three weekly rates of N: control (without N supply), 25 and 50 mg dm-3 of N, which were evaluated by 1, 2, 4, 8, 16 and 32 days after defoliation. The design was of completely randomized blocks in a 3 × 6 factorial arrangement with three replicates. The number of tillers was measured and harvesting and weighting of the following morphological components were performed: leaf (leaf blades), pseudostem, stem base...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Forage; Morphology; Structure; Tiller.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000800004
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Tillering dynamics in pastures of guinea grass subjected to grazing severities under intermittent stocking R. Bras. Zootec.
Montagner,Denise Baptaglin; Nascimento Júnior,Domicio do; Vilela,Hélio Henrique; Sousa,Braulio Maia de Lana; Euclides,Valéria Pacheco Batista; Silva,Sila Carneiro da; Carloto,Marciele Neves.
This experiment was carried out to analyze the tillering dynamics of the species Panicum maximum cv. Mombaca subjected to three post-grazing heights: residue of 30 cm (30); residue of 50 cm (50); and residue of 50 cm during spring and summer, lowered to 40 cm in the first fall season grazing and to 30 cm in the following grazing cycle, resuming to 50 cm after the first grazing of the following spring season (50-30). Grazings were initiated whenever the swards intercepted 95% of the incident light. The post-grazing heights were allocated in the experimental units in a completely randomized block design with three replications. The density of basal tillers did not vary between the residual heights evaluated. Swards managed with variable residual height...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Grazing management; Light interception; Panicum maximum; Stability index; Tiller.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000300010
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Tillering dynamics of Tanzania guinea grass under nitrogen levels and plant densities - doi: 10.4025/actascianimsci.v34i4.13382 Animal Sciences
Braz, Thiago Gomes dos Santos; Universidade Federal de Viçosa; Fonseca, Dilermando Miranda da; Universidade Federal de Viçosa; Freitas, Fabrício Paiva de; Universidade Federal de Viçosa; Martuscello, Janaina Azevedo; Universidade Federal de São João del-Rei; Santos, Manoel Eduardo Rozalino; Universidade Federal de Uberlândia; Santos, Márcia Vitória; Universidade Federal Rural da Amazônia.
This study evaluated the influence of nitrogen levels (N) and plant density (D) on the tillering dynamics of Tanzania guinea grass (Panicum maximum Jacq.). Treatments were arranged in a completely randomized block design with 12 treatments and two replicates in a factorial scheme (4 × 3) with four levels of N (0, 80, 160 or 320 kg ha-1 N) and three plant densities (9, 25, and 49 plant m-²). Higher number of tillers was observed in the treatment with 9 plants m-² and under higher levels of N, especially in the second and third generations. Still, the N influenced quadratically the appearance rate of basal and total tillers, which were also affected by plant density and interaction N × D. However, the appearance rate of aerial tiller was not influenced by...
Tipo: Pesquisa de campo Palavras-chave: 5.04.04.00-8; 5.04.04.01-6 light interception; Panicum maximum; Tiller; Appearance rate; Mortality rate.
Ano: 2012 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/13382
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