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| Téo, Saulo Jorge; Machado, Sebastião do Amaral; Figueiredo Filho, Afonso; Reissmann, Carlos Bruno. |
| O objetivo desta pesquisa foi modelar o conteúdo de micronutrientes da biomassa aérea de bracatinga (Mimosa scabrella Bentham). Ao todo, 25 árvores foram amostradas em diversos bracatingais da Região Metropolitana de Curitiba, no Estado do Paraná. As árvores foram derrubadas e seccionadas nos seguintes compartimentos: folhas, galhos < 4 cm, galhos ≥ 4 cm, madeira e casca do fuste, para determinação da massa seca e dos micronutrientes. Vários modelos matemáticos foram testados, além do procedimento stepwise. Os resultados indicaram que as equações para estimar o conteúdo de micronutrientes não apresentaram desempenho satisfatório, exceto para cobre em todos os compartimentos da biomassa e para ferro nos compartimentos da biomassa do fuste e para toda... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bracatinga; Conteúdo de nutrientes; Ciclagem de nutrientes Nutrient modeling nutrient content nutrient cycling.. |
| Ano: 2010 |
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/12 |
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| Santin, Delmar; Wendling, Ivar; Benedetti, Eliziane Luiza; Brondani, Gilvano Ebling; Reissmann, Carlos Bruno; Morandi, Divercindo; Roveda, Luís Fernando. |
| The extrativism method, inappropriate management and the reduction of mate tree populations has resulted in the loss potencial of relevant specimens for future genetic improvement. Few are the techniques and studies, focused on the restoration of degraded mate tree plantations, in order to recover vegetative samples of mature trees. So, an experiment was installed in São Mateus Country, Paraná State-BR, in a mate weakened population whose trees aged approximately 40 years. The objective was to evaluate the efficiency of bark girdling, combined to different pruning intensities, on the sprouting at the base of the trunk of weakened mate trees. A bark ring of 1 cm width, at 20 cm from the base, was removed. Additionally the crown was submitted to three... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Germplasm conservation rejuvenation base sprouting restoration of mate tree populations. Conservação de germoplasma; Rejuvenescimento; Brotação de base; Recuperação de ervais. |
| Ano: 2010 |
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/66 |
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| Keil, Silvia Schmidlin; Reissmann, Carlos Bruno; Pellico Netto, Sylvio. |
| The present paper has as objective the evaluation of the nutritional aspects, fertilization effect and omission of nutrients in the plants grow of canela sassafras (Ocotea odorifera (Vell.) Rohwer), in a vegetation house for 24 months, consisting of 11 treatments and five repetitions, with seasonal collections, using the springer material. The treatments consisted of control (natural soil), complete fertilization (N, P, K, Ca, Mg, S, Zn and B), fertilization with individual nutrients omission (-N, -P, -K, -Ca, -Mg, -S, -B, -Zn) and organic fertilization (bovine manure). Natural fertility soil and plants of canela sassafras originally from natural regeneration dispossess in causality statistical delineation were utilized. The height, diameter length and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ocotea odorifera fertilization nutrient omission. Ocotea odorifera; Fertilização; Omissão de nutriente. |
| Ano: 2010 |
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/2 |
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| Bastos, Marília Camotti; Reissmann, Carlos Bruno; Keseker, Jéssica Fernandes; Pauletti, Volnei; Gaiad, Sérgio; Sturion, José Alfredo. |
| Yerba mate is largely used to produce drinks to human consume. In Spring the plants develop tender young leaves that could represent a new market niche in the yerba-mate industry; this period is called as ”pressafrinha” in this study. This study aimed to analyze the total and hydro soluble nutritional values of young leaves collected in the Spring season and its nutritional potential for human consumption. To represent the ”pressafrinha” young leaves, the collected vegetal material was limited to the third terminal bud. The total and hydro soluble chemical analysis of leaves in the provenances Cascavel (progeny 174), Ivaí (progeny 6), Barão de Cotegipe (progenies 68 and 69) included the following elements: P, K, Ca, Mg, Na, Fe, Mn, Cu and Zn. The content... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Nutrição mineral de plantas; Nutrição humana; Genética Vegetal Ilex paraguariensis; Bevarages; Nutritional recommendations Ilex paraguariensis; Bebida; Recomendações nutricionais. |
| Ano: 2014 |
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/594 |
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| Batista, Araína Hulmann; Motta, Antônio Carlos Vargas; Reissmann, Carlos Bruno; Schneider, Thays; Martins, Iara Lang; Hashimoto, Maurício. |
| Soils with high acidity and low exchangeable bases may be responsible for low yields of Pinus taeda in a forest plantation at Jaguariaíva, Paraná State, Brazil. The aim of this study was to evaluate the effect of liming and fertilisation, applied over litter, on two selected areas with Pinus taeda plantations. Soil, litter and pine needles were evaluated for K, Ca and Mg concentrations and soil acidity parameters. Seven treatments were applied: (i) complete (N, P, K, Zn, Cu, B, Mo, and lime); (ii) without N, P, and K; (iii) without Zn, Cu, B, and Mo; (iv) without K; (v) without Zn; (vi) without lime; and (vii) control (without nutrients and lime). Soil samples were collected at five soil depths (0-5, 5-10, 10-20, 20-40 and 40-60 cm) simultaneously with... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ciência do Solo nutrient deficiency; Reforestation; Litter; Soil reaction; Acidification Nutrição Mineral de Plantas. |
| Ano: 2014 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/18061 |
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