Leaf Elongation Rate
Mostrando 13-24 de 77 artigos, teses e dissertações.
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13. Frequencies and intensities of defoliation in Aruana Guineagrass swards: accumulation and morphological composition of forage
The objective of this study was to assess the accumulation and morphological composition of forage in Aruana Guineagrass (Panicum maximum cv. Aruana) swards subjected to intermittent stocking with sheep. Experimental treatments when grazing was introduced included low (95%) and high (98%) incident light interception and low (10 cm)- and high (15 cm)-residue
Revista Brasileira de Zootecnia. Publicado em: 2012-04
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14. Morphogenetic and tillering dynamics in Tanzania grass fertilized and non-fertilized with nitrogen according to season
The objectives of this study were to evaluate morphogenetic characteristics and tillering dynamics in Tanzania grass fertilized and non-fertilized with nitrogen, under intermittent grazing, in the spring and the summer. The main plots were composed of four nitrogen rates (0, 100, 200 and 300 kg/ha) and the subplots were growth seasons: spring (October, Novem
Revista Brasileira de Zootecnia. Publicado em: 2012-03
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15. Produtividade e qualidade da forragem e do feno de capim tifton 85 adubado com N e colhido em duas idades de rebrota / Productivity and quality of forage and hay of Tifton 85 grass fertilized with N and harvested at two ages of regrowth
Three experiments were conducted with Tifton 85 grass. The first objective was to evaluate the structural characteristics and bromatological composition of forage under effect of different doses of nitrogen (0, 25, 50, 75 and 100 kg N ha-1 in each cut) and two ages of regrowth (28 and 35 days). The experimental design was a randomized block design with 5x2 f
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 08/12/2011
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16. Morfogênese, acúmulo de forragem e teores de nutrientes de Panicum maximum cv. Tanzânia submetido a diferentes severidades de desfolhação e fertilidades contrastantes / Morphogenesis, forage net accumulation and nutritional status of Panicum maximum cv Tanzânia under contrasting fertilization rates and grazing intensities
Nitrogen is the most important nutrient regulating pasture production. Response to N fertilization depends on residual leaf area index and other nutrient availability. The aim of this study was to evaluate morphogenetic and structural characteristics, grazing interval, forage yield and nutritional status of Tanzania guinea grass under contrasting defoliation
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 05/12/2011
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17. Morphogenesis on age categories of tillers in marandu palisadegrass
Knowledge regarding morphogenetic characteristics has contributed to the understanding of plant responses to variations in climatic conditions and management practices. However, the original framework has been developed for temperate grass species, and indicates no ontogenetic effect on the expression of morphogenetic traits. Similar information for tropical
Scientia Agricola. Publicado em: 2011-12
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18. Morphogenetic and structural characteristics of tillers of guinea grass of different age and grazing severities
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 w
Revista Brasileira de Zootecnia. Publicado em: 2011-10
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19. Morphogenesis of dwarf elephant grass clones in response to intensity and frequency of defoliation in dry and rainy seasons
The aim of this study was to evaluate during the dry and rainy seasons the morphogenesis traits of two clones of dwarf elephant grass under different management strategies. The study was conducted in a factorial 2 × 2 × 3 design, using two clones, one green and one purple, two residual heights, 25 and 45 cm, and three frequencies of defoliation according t
Revista Brasileira de Zootecnia. Publicado em: 2011-07
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20. Morphogenesis of Tanzania guinea grass under nitrogen doses and plant densities
The objective of this work was to evaluate effects of nitrogen fertilization and plant density on morphogenesis of Tanzania guinea grass. It was used a random block design with 12 treatments and two replications in a 4 × 3 factorial arrangement, with four doses of nitrogen (N) (without N application, 80, 160 or 320 kg/ha.year) and three plant densities (9,
Revista Brasileira de Zootecnia. Publicado em: 2011-07
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21. Morphogenetic characteristics and management of Tanzania grass.
The objective of this work was to evaluate the effect of grazing interval and period of evaluation over tissue turnover in Tanzania grass pastures (Panicum maximum cv. Tanzania) and to ascertain if herbage accumulation rate can be used as a criterion to establish a defoliation schedule for this grass in Southeast of Brazil. A randomized block design with a s
Pesquisa Agropecuária Brasileira. Publicado em: 2011
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22. Crescimento de capim-braquiária influenciado pelo grau de sombreamento e pela estação do ano.
O objetivo deste trabalho foi avaliar, nas diferentes estações do ano, as características morfogênicas e estruturais e a produção de matéria seca de Brachiaria decumbens Stapf., cultivada em três graus de sombreamento: área de pastagem exclusivamente com B. decumbens, área próxima ao bosque e área com bosque de Eucalyptus grandis consorciado com
Pesquisa Agropecuária Brasileira. Publicado em: 2011
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23. Avaliação de clones de capim-elefante manejados sob lotação rotacionada. / Evaluation of clones of elephant grass managed under rotational stocking.
This work aimed to describe and evaluate the morphogenetic and structural traits, and quality of two clones of elephant grass grazed under rotacional grazing. We used a completely randomized design with three replicates (paddocks) in a split plot, where clones were the whole plot and grazing cycles in a split plot, for evaluate morphogenetic and structural t
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 19/02/2010
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24. MORPHOGENESIS OF NATIVE GRASSES UNDER LEVELS OF NITROGEN / MORFOGÊNESE DE GRAMÍNEAS NATIVAS SOB NÍVEIS DE ADUBAÇÃO NITROGENADA
No período de maio de 2008 a março de 2009 foi desenvolvido experimento em área da Universidade Federal de Santa Maria, com o objetivo de avaliar as características morfogênicas e estruturais de oito gramíneas nativas (Andropogon lateralis, Aristida laevis, Axonopus affinis, Erianthus angustifolius, Paspalum notatum, Paspalum plicatulum, Piptochaetium
Publicado em: 2010