Home Itens selecionados Provedores de dados OAI Créditos Sobre Ajuda

			Busca avançada
	Provedor de dados PFB - Pesquisa Florestal Brasileira (14) Autor Bellote, Antonio Francisco Jurado (14) Silva, Helton Damin da (7) Andrade, Guilherme de Castro (5) Dedecek, Renato Antonio (5) Ferreira, Carlos Alberto (3) Corrêa, Robson Schaff (2) Maeda, Shizuo (2) Bognola, Itamar Antonio (1) Brand, Martha Andreia (1) Bruijnzeel, Leendert Adriaan (1) Franciscon, Luziane (1) Furtado, Thielly Schmidt (1) Gava, José Luiz (1) Lavoranti, Osmir José (1) Rizzi, Nivaldo Eduardo (1) Santana, Dalva Luiz de Queiroz (1) Tomazello Filho, Mario (1) Tomazello Filho, Mario de Castro (1) Tussolini, Elson Luiz (1) Valin, Marina (1) Mais... Palavra-chave Fertilization (2) Fertilização (2) Fósforo (2) Nutrientes (2) Nutrients (2) Phosphorous (2) Reforestation (2) Soil fertility (2) Adubação (1) Age (1) Anatomia da madeira (1) Anéis de crescimento (1) Atributos químicos (1) Biomass (1) Biomassa (1) Carbon sequestration (1) Cinza de biomassa (1) Crescimento vegetal (1) Densidade (1) Densidade da madeira (1) Mais... Tipo do documento Info:eu-repo/semantics/article (14) Ano 2011 (5) 2010 (5) 2004 (2) 2003 (2) País Brazil (14) Idioma Português (14)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 14 Primeira ... 1 ... Última Soil Physical and Chemical Attributes and Their Relation to Pinus taeda Growth and Productivity. PFB - Pesquisa Florestal Brasileira Bellote, Antonio Francisco Jurado; Dedecek, Renato Antonio. In order to evaluate the effect of soil chemical and physical attributes on the productivity of 20 year-old Pinus taeda stands planted on different soil types and with different growth rates, four sites were selected based on previous inventory, in two municipalities in the State of Paraná. Experimental plots were established on these areas where dominant trees were selected. Data on DBH and height were recorded and stem cross section disks at different heights were collected. Also, soil samples at different depths were collected. Growth variables and tree volumes were analyzed and correlations with soil chemical and physical traits were estimated. The results showed that wood production was influenced mainly by soil physical traits. Of special importance... Tipo: Info:eu-repo/semantics/article Palavras-chave: Soil compaction soil fertility wood production thinning Compactação do solo fertilidade do solo produtividade de madeira; Desbaste.. Ano: 2011 URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/203 Dendronutrition as a tool to evaluate Pinus taeda wood productivity and quality PFB - Pesquisa Florestal Brasileira Bellote, Antonio Francisco Jurado; Tomazello Filho, Mario; Dedecek, Renato Antonio. The objective of this work was to evaluate the effect of mineral nutrients on tree growth and wood quality of Pinus taeda, on commercial plantation at 20 years after planting, on different soil types. Experimental plots were set, and from trees representing each population, stem disks were collected at different heights. Treegrowth, wood quality and growth ring parameters – tracheids diameter and radial density by X-ray densitometry – were analyzed and related to mineral nutrient contents. Results showed negative correlation among Mn and Mg stem disk contents and Pinus taeda tree growth; negative correlation was also obtained among Ca, Mg and Mn contents and tracheids dimensions and wood density. There was no correlation among N, P, K and B contents in... Tipo: Info:eu-repo/semantics/article Palavras-chave: Mineral nutrition; Wood density; Tracheids; Tree rings; Forest soils. Nutrientes minerais; Densidade da madeira; Traqueídeos; Anéis de crescimento; Solos florestais.. Ano: 2010 URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/132 Nutrient Accumulation in Eucalyptus grandis Biomass and Litter Using Urban Waste and Mineral Fertilizer PFB - Pesquisa Florestal Brasileira Andrade, Guilherme de Castro; Bellote, Antonio Francisco Jurado; Silva, Helton Damin da; Rizzi, Nivaldo Eduardo; Gava, José Luiz. Large quantities of organic wastes are produced mainly in big cities, annually. There is urgent demand for safe and possible economic practices for its use on forest plantations. This study evaluated the effects of the application of urban waste and mineral fertilizers on Eucalyptus grandis W. Hill ex Maiden plantation growing on Neossolo Quartzarênico, analyzing nutrient contents in the litter and in the above ground biomass of trees at 86 months old. The results showed that those plots that received organic wastes presented biomass increments of 36.9 % and largest contents of N, P, K and Ca, 86 months after the establishment. After harvesting, largest nutrient pools remained on those same plots (18 % to 49 %), contributing significantly to maintain... Tipo: Info:eu-repo/semantics/article Palavras-chave: Reforestation; Organic wastes; Mineral nutrition. Plantios florestais; Resíduos orgânicos; Adubação; Nutrição mineral.. Ano: 2011 URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/207 Biometric characteristics and seedlings nutrition of Pinus taeda under salinity stress at Humic Distrocryept PFB - Pesquisa Florestal Brasileira Maeda, Shizuo; Silva, Helton Damin da; Bellote, Antonio Francisco Jurado. The application of cellulosic waste in forest plantations is an alternative to disposal, but more studies are necessary to confirm the safity of this disposal. The response of Pinus taeda L. to salinity in Humic Distrocryept was evaluated. In plantation, the seedlings were assessed for their height and stem diameter (SD), and at 120 days, were assessed the SD, height, dried root biomass (DRB), shoot (DBS) and total dried matter (TDM). The contents of P, K, Ca, Mg and Na were determinated, and, based on these levels it was estimated the quantity of these elements and calculated the efficiency use in leaves and roots and translocation to the shoot. Except the relationship between DSB/DRB, the other variables were significantly influenced by increased... Tipo: Info:eu-repo/semantics/article Palavras-chave: Electric conductivity; Plant growth; Nutritional efficiency. Condutividade elétrica; Crescimento vegetal; Eficiência de utilização.. Ano: 2010 URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/110 Changes in chemical characteristics of a Litholic Humic Neosol grown with Pinus taeda, promoted by the application of cellulosic residue PFB - Pesquisa Florestal Brasileira Maeda, Shizuo; Silva, Helton Damin da; Bellote, Antonio Francisco Jurado. The aim of this work was to evaluate, in vase, the effect of cellulosic residue in soil and chemical characteristics of effluents resulting from that application in Litholic Humic Neosol layers collected in the 0 to 10 and 10 cm to 30 cm. Doses of sludge, equivalent to 0, 10, 20, 40 and 80 Mg ha-1 were implanted in a randomized design. Aliquots corresponding to doses of sludge, collected on the treatment were mixed to the soil layer of 0 to 10 cm and placed in vessels after the completion of the soil layer from 10 cm to 30 cm. At 117 days after implantation of the test, samples were collected from the soil layer from 0 to 20 cm and from the effluent resulting from the application of water for irrigation. The treatments changed the characteristics... Tipo: Info:eu-repo/semantics/article Palavras-chave: Soil attributes cellulosic residue. solos; Atributos químicos; Resíduo celulósico.. Ano: 2010 URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/145 Carbon Accumulation in Pinus taeda Estimated by X-rays Densitometry and Trunk Analysis PFB - Pesquisa Florestal Brasileira Bellote, Antonio Francisco Jurado; Dedecek, Renato Antonio; Lavoranti, Osmir José; Tomazello Filho, Mario de Castro; Andrade, Guilherme de Castro. The objective of this work was to evaluate Pinus aeda growth and based on X-ray methods of  densitometry and bole analyses to develop mathematical models to estimate carbon amount accumulated on trees of different ages varying on DBH. Five P. taeda plantations were selected on sites of different soils, thinning intensity and growing rate. On each site dominant trees were selected and discs cuts from different heights were collected and submitted to X-ray densitometry for trunk analyses. Mathematical models were developed, to generated equations to compare by testing their statistical identity and equality and to validate by bootstrap methods. The results showed that P. taeda productivity was influenced by soil and silvicultural practices; X-ray... Tipo: Info:eu-repo/semantics/article Palavras-chave: Productivity; Mathematical models; Carbon sequestration; Thinning; Forestry sites. Produtividade; Modelos matemáticos; Seqüestro de carbono; Desbaste; Sítios florestais.. Ano: 2011 URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/208 Soil properties and variability of tracheid dimensions and wood density in Pinus caribaea var. hondurensis PFB - Pesquisa Florestal Brasileira Corrêa, Robson Schaff; Bellote, Antonio Francisco Jurado. The understanding of wood quality in relation to different forest sites is of fundamental relevance in current timber market. There are only few studies available concerning soil and wood quality of tropical pinots. So, the goal of this work was to characterize tracheid dimensions and wood density of Pinus caribaea var. hondurensis, correlating these variables with soil properties at different sites. Discs were taken at 1.3 m height and comprised two radial samples in each of the four dominant trees removed at four different sites. Measurements for wood density were made from the third to the eleventh year old rings, and the measurement of tracheid dimensions were made in the fourth, eighth and eleventh year sold rings. The soil, collected in the canopy... Tipo: Info:eu-repo/semantics/article Palavras-chave: Soil fertility; Soil physics; Silviculture; Tropical pines; Wood anatomy; Wood quality Fertilidade do solo; Física do solo; Silvicultura; Pinheiros tropicais; Anatomia da madeira; Qualidade da madeira. Ano: 2011 URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/195 Phosphate and potash fertilization on Acacia mearnsii De Wild. (Black wattle) plantation. PFB - Pesquisa Florestal Brasileira Andrade, Guilherme de Castro; Bellote, Antonio Francisco Jurado; Ferreira, Carlos Alberto; Silva, Helton Damin da. Acacia mearnsii is the third forest species more planted in Brazil, especially in small farms at Rio Grande do Sul State. The species is also known as black wattle and is important as a source of tannin, timber, pulpwood and rayon. Its fast growth results in high demand of nutrients and fertilization is necessary to keep site productivity. In this paper it is reported the results of the application of four doses of Phosphorous (0, 20, 40, 80g/tree as P2O5) and three of Potassium (0, 20, 40g/tree as K2O), in a factorial designed trial established on a chemically poor soil at the region of Ponta Grossa, State of Paraná, Brazil. Trees were implanted in a 3m X 2m spacing with 35 plants per plot. The fertilizers were applied in furrows between the rows at the... Tipo: Info:eu-repo/semantics/article Palavras-chave: Reforestation; Fertilization; Nutrients; Phosphorous; Potassium; Wood productivity Reflorestamento; Fertilização; Nutrientes; Fósforo; Potássio; Produtividade de madeira. Ano: 2004 URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/1596 Variáveis do processo de briquetagem e qualidade de briquetes de biomassa florestal PFB - Pesquisa Florestal Brasileira Furtado, Thielly Schmidt; Valin, Marina; Brand, Martha Andreia; Bellote, Antonio Francisco Jurado. Na busca pelo aproveitamento dos resíduos gerados desde a produção florestal até os processos de transformação industrial da biomassa, desenvolveu-se o processo de briquetagem. A aglomeração de partículas de madeira facilita as operações de  manuseio do material combustível, além de concentrar a energia disponível em termos de volume. O objetivo do presente trabalho foi avaliar se a matéria-prima tem influência na qualidade do briquete e verificar o efeito da pressão aplicada durante o processo nas  características energéticas e mecânicas do produto final, além de avaliar o comportamento da  mistura de materiais (MIX) em relação aos materiais puros. Os briquetes foram produzidos em uma briquetadeira piloto, tipo pistão hidráulico, a 120 ºC com pressão... Tipo: Info:eu-repo/semantics/article Palavras-chave: Pinus sp. gross calorific value density compressive strength. sp.; Poder calorífico superior; Densidade; Resistência à compressão. Ano: 2010 URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/101 Equations for estimating biomass of aereal compartementes of Eucalyptus benthamii PFB - Pesquisa Florestal Brasileira Silva, Helton Damin da; Ferreira, Carlos Alberto; Corrêa, Robson Schaff; Bellote, Antonio Francisco Jurado; Tussolini, Elson Luiz. This paper presents the results of the adjustment of equations for estimating biomass of aerial compartments of Eucalyptus benthamii trees. The percentile allocation of biomass, in the compartments wood, bark, leaves and branches is also presented. The trees of Eucalyptus benthamii were sampled from stands of 12, 24, 36 and 48 months of age, planted at the spacing 3 m x 2 m, in the region of Guarapuava-PR. For the compartments considered, the generalized logarithmic model gave better indices of adjustment for branches and, together with logarithmic combined variable, the minor error for bark variable. Leaves and wood had minor error with model lnY=b0 +b1*lnDBH and logarithmic combined variable, respectively. The allocation of biomass in the different... Tipo: Info:eu-repo/semantics/article Palavras-chave: Age; Model; Variable Idade; Modelos; Variável. Ano: 2004 URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/1588 Nutrientes minerais, biomassa e deposição de serapilheira em plantio de Eucalyptus com diferentes sistemas de manejo de resíduos florestais PFB - Pesquisa Florestal Brasileira Bellote, Antonio Francisco Jurado; Dedecek, Renato Antonio; Silva, Helton Damin da. Neste trabalho foi avaliado o efeito de diferentes manejos de resíduos florestais no estado nutricionaldas árvores, no conteúdo de nutrientes na serapilheira e a biomassa de serapilheira produzida pelo Eucalyptusgrandis. Foram avaliados quatro sistemas diferentes de manejo de resíduo: (i) remoção de todo resíduo do sítioproveniente da colheita florestal e adubação NPK; (ii) manutenção no sítio de todos os resíduos da colheitaflorestal e adubação NPK; (iii) remoção do sítio de todo o resíduo da colheita com diâmetro superior a 3 cm eadubação NPK; (iv) remoção de todos os resíduos da colheita, adubação NPK e adição de 15 t.ha-1 de resíduocelulósico + 4 t.ha-1 de cinza de madeira (relação C:N igual a 25:1 e 30:1, respectivamente). Os resultados mostraramque a... Tipo: Info:eu-repo/semantics/article Palavras-chave: Produtividade papel e celulose; Cinza de biomassa; Resíduos industriais. Productivity pulp and paper sludge wood ash industrial residues.. Ano: 2010 URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/60 Ctenarytaina spatulata, Taylor: soil water, mineral nutrients and their relations to eucalyptus dieback PFB - Pesquisa Florestal Brasileira Santana, Dalva Luiz de Queiroz; Bellote, Antonio Francisco Jurado; Dedecek, Renato Antonio. To develop this study it was used Eucalyptus grandis seedlings planted in three-liter pots, filled with soil collected on areas where dieback occurred (Arapoti, PR). The experiment consisted of six soil water level treatments, with and without insects. The experimental design was randomized blocks with 6 replications, arranged in six cages inside a green house. Three cages received insects and other three, not. The experiment consisted of the following treatments: 1. Sat. - soil water content maintained on the saturated conditions; 2. CC – soil water content maintained on field capacity; 3. 60 - humidity of the soil to 60% of the field capacity; 4. 30 - humidity of the soil to 30% of the field capacity; 5. A7 – soil water content maintained 7 days on the... Tipo: Info:eu-repo/semantics/article Palavras-chave: Water stress; Dieback; Eucalyptus pests; Psyllidae Estresse hídrico; Pragas do eucalipto; Psyllidae; Entomologia. Ano: 2003 URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/1618 Efeitos da adubação fosfatada e da aplicação de resíduo de celulose no crescimento de Eucalyptus dunnii PFB - Pesquisa Florestal Brasileira Andrade, Guilherme de Castro; Silva, Helton Damin da; Bellote, Antonio Francisco Jurado; Ferreira, Carlos Alberto. No Brasil, os plantios de árvores de rápido crescimento, principalmente espécies de Eucalyptus e de Pinus, representam uma oferta de milhares de empregos e significativa contribuição ao PIB. Do ponto de vista ambiental, contribuem para reduzir a pressão sobre as florestas nativas, concorrendo assim para a sua preservação e a dos recursos naturais nelas existentes. Esses povoamentos florestais, implantados na sua maioria em solos de baixa fertilidade, apresentam altas taxas de crescimento, necessitando de quantidades significativas de água e nutrientes do solo, o que causa preocupações com a sustentabilidade desses sistemas e com a necessidade de reposição futura de nutrientes. A utilização de resíduos para esta finalidade é considerada prioritária. Neste... Tipo: Info:eu-repo/semantics/article Palavras-chave: Reflorestamento; Fertilização; Nutrientes; Fósforo; Produtividade de madeira Reforestation; Fertilization; Wastes; Nutrients; Phosphorous; Wood productivity. Ano: 2003 URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/1607 Avaliações de sítio e produtividade em plantios de Eucalyptus urograndis com 3 anos de idade em São Paulo, Brasil PFB - Pesquisa Florestal Brasileira Andrade, Guilherme de Castro; Bognola, Itamar Antonio; Bellote, Antonio Francisco Jurado; Franciscon, Luziane; Waterloo, Maarten Johannes; Bruijnzeel, Leendert Adriaan. No Brasil os plantios florestais ocupam 7 milhões de hectares que correspondem a 1% do território (68% com plantações de Eucalyptus e 25% com Pinus) O objetivo desse trabalho foi avaliar plantios de Eucalyptus urograndis. Estoques elevados de Ca e Mg no solo, sugerem uma lixiviação do calcário. A resistência do solo até os 60 cm de profundidade na linha de plantio foi menor do que na entrelinha, indicando que a subsolagem foi eficiente. Os valores de resistência do solo foram mais altos na entrelinha, distante 1 m da linha de plantio, até os 20 cm de profundidade, provavelmente pelo aumento da compactação na preparação da área. A biomassa da copa das árvores diferiu entre as classes de DAP, justificando o uso de equação para a sua estimativa. A variação... Tipo: Info:eu-repo/semantics/article Palavras-chave: Forest plantation; Biomass; Litter; Soil fertility; Soil strength Plantação florestal; Biomassa; Serapilheira Fertilidade do solo; Resistência do solo. Ano: 2011 URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/273 Registros recuperados: 14 Primeira ... 1 ... Última

Empresa Brasileira de Pesquisa Agropecuária - Embrapa Todos os direitos reservados, conforme Lei n° 9.610 Política de Privacidade Área restrita		Embrapa Parque Estação Biológica - PqEB s/n° Brasília, DF - Brasil - CEP 70770-901 Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco