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| Registros recuperados: 587 | |
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| Oliveira, Tadário Kamel de; Macedo, Renato Luiz Grisi; Venturin, Nelson; Higashikawa, Emílio Manabu. |
| A produção de madeira de eucalipto para serraria está condicionada a longos ciclos de corte, maiores espaçamentos e tratos silviculturais específicos, e permite o consórcio com espécies produtoras de grãos e forragem. Objetivou-se avaliar e caracterizar a dinâmica de crescimento e produtividade de eucalipto, sob diferentes arranjos espaciais em sistema agrossilvipastoril. O experimento foi implantado em área de cerrado, com mudas clonais de um híbrido natural de Eucalyptus camaldulensis Dehnh com E. urophylla S.T. Blake, em consórcio com arroz no primeiro ano, soja no segundo e Brachiaria brizantha nos seguintes. O delineamento utilizado foi o de blocos casualizados com onze tratamentos (arranjos espaciais) e cinco repetições, com parcelas subdivididas no... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Eucalyptus espaçamento; Crescimento; Silvipastoril; Sistema agroflorestal Eucalyptus spacing growth silvipastoral agroforestry system.. |
| Ano: 2010 |
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/40 |
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| Gomes, Joao Bosco Vasconcellos; Araújo Filho, José Coelho de; Curi, Nilton. |
| Landscapes formed on Barreiras Formation sediments occupy signifi cant area on Brazilian territory. Many of these landscapes have highly intensive agricultural use, dueto favorable climate and topography. The objective of this study was to characterize and to compare soil profi les situated on non-dissected coastal plains from southern Bahia to Alagoas, occurring under natural vegetation (forest) and agricultural use. Seven soil profi leswere analyzed and data from six soil profi les obtained in other works were incorporated. Particle size distribution, organic C (OC), Al, Ca, Mg, Al+H, K, Na, P, Fe, Ti and Si were determined. Clay mineralogy was analyzed by X-ray diffraction. Soil profi les occur on fl at relief, have yellow color, weak small to medium... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cohesive character; Barreiras Formation; Kaolinite Caráter coeso; Formação Barreiras; Caulinita. |
| Ano: 2012 |
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/324 |
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| Cardoso de Lima Fonseca Alves, Kaio Cesar; Ribeiro Viola, Marcelo; de Souza, Patrícia Aparecida; Giongo, Marcos; de Mello, Carlos Rogério. |
| A importância das áreas de preservação permanente (APP) encontra-se na função ambiental de manter, preservar e conservar os recursos hídricos e ecossistemas existentes nas bacias hidrográficas. Objetivou-se com o presente trabalho delimitar e quantificar as APP’s de cursos d’água e áreas antropizadas nos limites destas na bacia hidrográfica do rio Formoso, TO. As APP's foram delimitadas considerando-se os limites determinados pelo Código Florestal Brasileiro, sendo amostradas as APP’s dos cursos d'água principais de nível hierárquico 4. O traçado manual da rede de drenagem, a delimitação automática das APP’s e a classificação visual dos conflitos de uso do solo a partir de imagens LANDSAT 5 TM dos anos de 1985, 1998 e 2011 foram realizadas no Sistema de... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Recursos Florestais; Engenharia Florestal; Conservação e gestão de recursos naturais Área de preservação permanente; Geotecnologias; ArcGIS; Legislação Ambiental Permanent preservation area; Geotechnologies; ArcGIS; Environmental Legislation. |
| Ano: 2015 |
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/820 |
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| d'Oliveira, Marcus Vinicio Neves; Oliveira, Luis Claudio; Acuña, Mario Humberto Aravena; Braz, Evaldo Muñoz. |
| We performed a forest growth dynamics study in Acre State, Brazilian southwestern Amazon, where a 20 ha area was logged in 1992. The study was based permanent sample plots (1 ha) established in the logged area and in an unlogged forest immediately after logging operations finished. Forest dynamics parameters were assessed in terms of aboveground dried biomass (AGB). During the study period, three extreme climate events triggered a high impact on both logged and unlogged areas, producing AGB losses greater than those estimated for logging. Twenty years after logging, ingrowth and mortality rates were similar to those expected in an undisturbed forest, and AGB recovery was significantly faster in the logged areas. Forest management, when properly applied,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Recursos florestais; Engenharia florestal Forest management; Above-ground biomass; Experimental plots Gestão florestal; Biomassa acima do solo; Parcelas experimentais. |
| Ano: 2017 |
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/1398 |
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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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| Silva, Carla Raphaela Araújo; Ribeiro, Aristides; Oliveira, Aline Santana de; Klippel, Valéria Hollunder; Barbosa, Robert Louis Pazzeto. |
| Este estudo teve como objetivo a avaliação do desenvolvimento de mudas de eucalipto sob distintas lâminas de irrigação na etapa de crescimento. Híbridos de Eucalyptus urograndis (clone A) e Eucalyptus uroglobulos (clone B) foram submetidas às lâminas de 5, 9, 11, 14 e 15 mm. Foram mensuradas a altura, diâmetro do colo, biomassa fresca, biomassa seca e calculado o IQD. Do início ao fim do experimento, a altura das mudas variou de 17,75 a 30,27 cm e de 12,03 a 26,70 cm; o diâmetro do colo de 2,17 a 4,38 mm e de 1,88 a 3,13 mm; a biomassa fresca de 2,60 a 7,86 g muda-1 e 1,66 a 8,04 g muda-1; a biomassa seca de 0,89 a 2,45 g muda-1 e 0,42 a 1,97 g muda-1; e o IQD de 0,06 a 0,238 e 0,04 a 0,189, para os clones A e B, respectivamente. Para o clone A, a lâmina... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Recursos Hídricos; Agrometeorologia; Engenharia Florestal manejo hídrico; Qualidade de mudas; Eucalyptus urophylla x E. grandis; Eucalyptus urophylla x E. globulus. |
| Ano: 2015 |
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/897 |
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| Medeiros, Maria Luiza de Souza; de Pádua, Guilherme Vinícius Gonçalves; Pereira, Márcio Dias. |
| This study aimed to adapt and test the efficiency of electrical conductivity methodology test in quality evaluation of Moringa oleifera Lam seeds. For physiological characterization four seed sets were evaluated by tests of germination, seedlings emergency, speed of emergency index, emergency first count, seedlings length and dry mass and cold test. The electrical conductivity test was carried out at 25 °C for 4, 8, 12, 16 and 24 h of immersion in 75 or 125 mL of distilled water using 25 or 50 seeds. A completely randomized design was used. The best results were obtained when using 50 seeds immersed in 75 mL or 125 mL of distilled water for 4 h. The electrical conductivity test adapted to moringa seeds was efficient in ranking sets of different vigor... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Moringacea; Physiologic potential; Vigor Ciências Florestais; Sementes florestais Moringaceae; Potencial fisiológico; Vigor. |
| Ano: 2017 |
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/1384 |
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| Cordeiro, Márcio Assis; Pereira, Nayara Natacha de Jesus; Binoti, Daniel Henrique Breda; Binoti, Mayra Luiza Marques da Silva; Leite, Hélio Garcia. |
| The present study aimed to show the results of Acacia mangium volumetric estimates obtained through the Schumacher and Hall model compared to the methods of artificial neural networks and support vector machines. To enable this comparative analysis, we used data from 31 trees of Acacia mangium aged 14–17, from a stand located in the northern region of the state of Amapá. Diameter and bark thickness of the trees were measured into relative heights along the stem into 14 sections (0.05%, 1%, 5%, 10%, 15%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, and 95%), with measurement. Total volume with bark was obtained by applying the Smalian formula. In general, the methods that differ from traditional methods showed statistically superior results. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Smalian; Modeling; Volumetric estimates Engenharia Florestal Manejo Florestal Recursos Florestais Smalian; Modelagem; Estimativa volumétrica. |
| Ano: 2015 |
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/596 |
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| Farias, Walda Monteiro; Andrade, Leonaldo Alves de; Albuquerque, Manoel Bandeira de; Cunha, João Rodrigues da. |
| A utilização de macrófitas aquáticas na composição de substratos para produção de mudas de moringa constitui uma alternativa sustentável. Portanto, objetivou-se com esta pesquisa avaliar o desenvolvimento de mudas de moringa, utilizando subtratos com macrófitas aquáticas, e determinar os teores de N, P e K nas mudas. Utilizaram-se diferentes combinações de macrófitas (M), esterco bovino (E) e terra vegetal (TV) para compor os subtratos. O experimento foi conduzido em esquema fatorial 3 × 4, em delineamento em blocos casualizados com quatro repetições. Foram avaliados: alturas das plantas, diâmetro da copa e caule, taxa relativa de crescimento em altura, em diâmetro da copa e do caule, matéria seca da parte aérea e raízes, comprimento de raízes e razão... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Recursos Florestais; Engenharia Florestal; Produção vegetal Composto orgânico; Typha domingensis; Moringa oleifera Organic compound; Typha domingensis; Moringa oleifera. |
| Ano: 2016 |
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/791 |
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| Januário, Aline Bispo Santos; Peres Filho, Otávio; Souza, Marcelo Dias de; Dorval, Alberto; Silva, Marcelo Muniz. |
| The objective of this study was to collect, identify and carry out a faunistic characterization of Geometridae family in Cotriguaçu county, Mato Grosso State, Brazil in different forest fragments. The sampled sites were: Tectona grandis plantation; mixed stand formed by Ficus spp., Astronium sp., Copaia Jacaranda, Syzygium jambolanum and Aspidosperma sp., initial forest regeneration, riparian forest and native forest. The samples were collected from July 2007 to June 2008. In each site, three light traps were placed at 1.5 m above the soil. It was used the model Luiz of Queiroz, with lights twice a month from 6:00pm to 6:00am. The faunistic index of dominance, frequency, abundance and constancy were determined. It was collected 387 individuals, divided in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Synchlora; Semiothisa; Entomofauna; Biodiversity Recursos Florestais; Engenharia Florestal; Entomologia Florestal Synchlora; Semiothisa; Entomofauna; Biodiversidade. |
| Ano: 2013 |
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/399 |
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| Tessmann, Dauri José; Santos, Álvaro Figueredo dos; Vida, João Batista; Mafacioli, Rudimar. |
| A antracnose, causada pelo fungo Colletotrichum gloeosporioides, é uma doença foliar importante da pupunheira (Bactris gasipaes) nas fases de muda e planta jovem. O objetivo do trabalho foi avaliar a eficiência de fungicidas químicos no controle de antracnose em folhas de pupunheiras jovens, no Noroeste do Paraná. O ensaio foi conduzido com o delineamento experimental em blocos ao acaso, com cinco tratamentos com fungicidas e uma testemunha sem fungicida, com quatro repetições. Foram utilizados os fungicidas chlorotalonil (2 g L-1), chlorotalonil+tiofanato metílico (1 + 0,4 g L-1), tebuconazole (0,2 g L-1), azoxistrobina (80 mg L-1) e calda Viçosa (3 g L-1 de ácido bórico; 5 g L- de sulfato de cobre; 6 g L-1 de sulfato de zinco; 3,5 g L-1 de cal... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Colletotrichum gloeosporiodes; Arecaceae Colletotrichum gloeosporiodes; Arecaceae.. |
| Ano: 2011 |
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/232 |
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| Santana, Dalva Luiz de Queiroz; Ferreira, Carlos Alberto; Martins, Emerson Gonçalves; Silva, Helton Damin da. |
| The grevilea, Grevillea robusta (Cunn), species of the Proteaceae family, native of Australia it was introduced in Brazil and in several other countries of the world, for ornamentation, wind breaks and to shade agricultural crops. In general the grevilea has few pests in its area of natural dispersion and also in Brazil. Recently a severe infestation of the cicada Aethalion reticulatum (Hemiptera: Aethalionidae) was verified in experimental plantings of grevilea’s plantation in São Miguel Arcanjo, SP. This is the first verification of A. reticulatum causing damages to G. robusta. A. reticulatum is an sap sucking insect and the damages in grevilea are similar to the observed in fruit plants. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Grevilea pests; Forest pests; Fruit cicada Pragas da grevílea; Pragas florestais; Cigarrinha das fruteiras. |
| Ano: 2011 |
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/244 |
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| Guimarães, Rafael Zoboli; Gonçalves, Mônica Lopes; Medeiros, Sandra Westrupp. |
| Superficial water quality was monitored in plantation areas with exotic species (Pinus taeda e Pinus ellioti) in Joinville coutry, Santa Catarina, Brazil, between September 2005 and July 2006. The results, obtained in the monitoring area through the comparison of different forested catchments of different forestry ages, were compared with the ones of the native forest. The parameters used in monitoring were temperature, pH, dissolved oxygen (DO), oxygen biochemist demand (OBD), total solids dissolved (TSD), turbidity, and thermo tolerant coliforms (TC). The most significant result was: an average increase of 0,4 units of pH, 42 NMP/100 mL of TC, comparing the water quality in the entrance and exit of the forestry. It had greater stability at temporal and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cubatão river silviculture water qulity Pinus eliottii Pinus taeda. Rio Cubatão silvicultura; Qualidade da água; Pinus elliottii; Pinus taeda.. |
| Ano: 2010 |
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/64 |
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| Behling, Alexandre; Sanquetta, Carlos Roberto; Caron, Braulio Otomar; Schimidt, Denise; Elli, Elvis Felipe; Corte, Ana Paula Dalla. |
| This study aimed to evaluate the content of organic carbon in plant parts (leaves, wood, twigs and bark) of forest species Acacia mearnsii De Wild, Eucalyptus grandis Hill and Mimosa scabrella Benth, under different spacing between trees (2.0 m x 1.0 m, 2.0 m x 1.5 m, 3.0x1.0 m and 3.0 m x 1.5 m), one year after planting. It was also aimed to verify if the conversion factor of 50% can be applied. To determine the organic carbon it was used a carbon analyzer(C-144). The carbon content varied depending on the species, spacing and the part of the plant component used. It was observed that the factors: species, spacing, and parts of the plant are not independent. So, the carbon content measurements should be determined for each species and for each biomass... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Forest species; Biomass; Planting densities Recursos Florestais; Engenharia Florestal; Manejo Espécies florestais; Biomassa; Densidades de plantio. |
| Ano: 2014 |
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/562 |
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| Registros recuperados: 587 | |
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