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Submitted by Mario BC (mario@bc.ufrpe.br) on 2019-06-07T12:38:51Z No. of bitstreams: 1 Hugo Neves de Barros Lima.pdf: 1220603 bytes, checksum: c658e573e08380b6cfe52e3b763b2e72 (MD5) Made available in DSpace on 2019-06-07T12:38:51Z (GMT). No. of bitstreams: 1 Hugo Neves de Barros Lima.pdf: 1220603 bytes, checksum: c658e573e08380b6cfe52e3b763b2e72 (MD5) Previous issue date: 2019-02-22 Conselho Nacional de Pesquisa e Desenvolvimento Científico e Tecnológico - CNPq The potential of silvopastoral systems in northeast Brazil needs to be better assessed in order to exploit their full capacity. In this research, we evaluated morphometric measures, the production of firewood and timber and the physical characteristics of wood of the legume species Gliricidia sepium (Jacq.) Steud and Mimosa caesalpiniifolia Benth. in consortium with Brachiaria decumbens Stapf. Nitrogen, C, isotopic composition (δ15N and δ13C), and digestibility of tree leaves after seven years of planting were also analyzed. After adult trees were cut, the morphometric growth of the tree species was evaluated. Additional response variables included N, C, isotopic composition (δ15N and δ13C) and digestibility of tree leaves at 120-day intervals. The effect of shading on biomass production of Brachiaria decumbens Stapf was also evaluated every 56 days, as well as their N, C, isotopic composition (δ15N and δ13C) and digestibility. No statistical effect was found for the timber and firewood production among the studied species (p=0.1190, p=0.1299, p=0.2579, respectively). However, the sabia had the greatest value of wood density for branches with a diameter > 2.55 cm and < 4.13 cm (0.94 g cm-3) and 0.99 g cm-3 in the stems with diameter ≥ 4.14 cm (p 2.55 cm and < 4.13 cm and 4.31 kcal g-1 in the stems with diameter ≥ 4.14 cm. Gliricidia presented values of 4.08 kcal g-1 in the branches with diameter > 2.55 cm and < 4.13 cm and 4.15 kcal g-1 in the stems with diameter ≥ 4.14 cm (p

Submitted by (edna.saturno@ufrpe.br) on 2017-03-17T15:56:06Z No. of bitstreams: 1 Amanda Ferreira de Lima.pdf: 377887 bytes, checksum: fd40358a75475fdcdaedd3f5aa3cd8bc (MD5) Made available in DSpace on 2017-03-17T15:56:06Z (GMT). No. of bitstreams: 1 Amanda Ferreira de Lima.pdf: 377887 bytes, checksum: fd40358a75475fdcdaedd3f5aa3cd8bc (MD5) Previous issue date: 2009-07-22 Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES Conselho Nacional de Pesquisa e Desenvolvimento Científico e Tecnológico - CNPq The morphogenic characteristics of Panicum maximum Jacq. clones were evaluated during the regrowth period under water stress. The experiment was carried out in a greenhouse at the Animal Science Department - UFRPE, from March to September 2008. Samples collected in the of Sergipe state, municipalities of Pernambuco (São José da Coroa Grande, São Bento do Una and Itambé) and the Mombaça, Tanzania and Massai cultivars were evaluated. The seedlings were transplanted to experimental pots and fertilized with limestone and nitrogen. Two standardization cuts were performed and 27 days after the 2nd cut the clones were submitted to water stress. The establishment period until the application of water stress lasted 27 days. The experimental treatments were of 7, 14, 21 and 28 days without irrigation in order to evaluate the morphogenic characteristics in the regrowth period at 2, 4, 6, 8, 10, 12 and 14 days. A completely randomized design as a 4 x 7 (four periods of water stress x seven clones) factorial arrangement was used. Seven evaluations were performed in alternated days during the regrowth period. Estimates of plant height, leaf blade length, number of emerging green leaves, number of dead leaves and total number of tiller were the morphogenic characteristics evaluated during the regrowth period. Clone means were submitted to Tukey test at 5% of probability. Number of tillers, leaf blade length, plant height, number of dead leaves and number of green leaves were submitted to the analysis of variance in a repeated measure model within each stress period. No significant effect on clone regrowth under water stress from 7 to 28 days was detected. The highest water stress level favor the plant development after cutting. Objetivou-se avaliar as características morfogênicas de clones de Panicum maximum Jacq. durante o período de rebrote após períodos de suspensão hídrica. O experimento foi realizado no Telado do Departamento de Zootecnia da UFRPE, no período de março a setembro de 2008. Foram avaliados materiais coletados nos municípios de Sergipe, São José da Coroa Grande, São Bento do Una e Itambé e os cultivares Mombaça, Tanzânia e Massai. As mudas foram transplantadas para vasos com capacidade para 7,5kg, preenchidos com solo previamente destorroado e corrigido, na proporção de 2 t/ha, fevereiro de 2008. Realizou-se adubação nitrogenada, na proporção de 50 kg/ha, em abril de 2008. Após o período de estabelecimento foram aplicados os períodos de suspensão hídrica. Foram realizados dois cortes de uniformização e 27 dias após o 2o corte os clones foram submetidos à suspensão hídrica. O período de estabelecimento até a aplicação dos períodos de estresse durou 37 dias. Os tratamentos experimentais constaram de submeter os clones a períodos de suspensão hídrica (sete, quatorze, vinte e um e vinte e oito dias sem irrigação) e avaliar as características morfogênicas no período de rebrota. O delineamento experimental utilizado foi o inteiramente casualizado, em um arranjo fatorial quatro x sete. Foram realizadas sete avaliações em dias alternados no período de rebrote. As variáveis estudadas foram altura da planta, comprimento da lâmina foliar, número de folhas verdes em expansão, número de folhas mortas e número total de perfilhos. Para comparação entre médias de clones utilizou-se o teste Tukey, a 5% de probabilidade. A rebrota dos clones avaliados pouco diferenciam após níveis de suspensão hídrica de 7 a 28 dias. O maior nível de suspensão hídrica avaliado favorece o desenvolvimento da planta após o corte.