morphogenesis of tanzania guinea grass under nitrogen doses and plant densities

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ID: 213262
2011
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Abstract
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, 25 or 49 plants/m²). Harvest was performed at 25 cm from the ground when the canopy intercepted 95% of the incident light. Rates of leaf appearance and pseudostem elongation were positively and linearly influenced by nitrogen, whereas phillochron and leaf life span were influenced linearly and negatively. Leaf elongation responded positively to two factors, whereas leaf senescence rate and number of live leaves were not influenced by the factors evaluated. Number of total, basal and aerial tillers were greater at the density of 9 plants/m² and at the nitrogen dose of 320 kg/ha.year. Nitrogen increases production of leaves and tillers in Tanzania guinea grass defoliated at 95% of light interception, but high density of plants reduces the number of tiller per bunch.
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braz2011revistamorphogenesis Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Thiago Gomes dos Santos Braz;Dilermando Miranda da Fonseca;Fabrício Paiva de Freitas;Janaina Azevedo Martuscello;Manoel Eduardo Rozalino Santos;Márcia Vitória Santos;Vinícius Valim Pereira
Journal european journal of lipid science and technology
Year 2011
DOI
10.1590/S1516-35982011000700004
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