Consulta: creatorFacets:"Andrade, Guilherme de Castro"
Registros recuperados: 8
Data/hora: 02/06/2024 03:56:42

Nutrient Accumulation in Eucalyptus grandis Biomass and Litter Using Urban Waste and Mineral Fertilizer
Provedor de dados: 190
Autores: 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

Carbon Accumulation in Pinus taeda Estimated by X-rays Densitometry and Trunk Analysis
Provedor de dados: 190
Autores: 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

Phosphate and potash fertilization on Acacia mearnsii De Wild. (Black wattle) plantation.
Provedor de dados: 190
Autores: 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

Evaluation of Seedlings Gowth of Eucalyptus badjensis in Substrata from Composted Residues (Pulp and Paper Mill, Brewery Industry and Goat Dung)
Provedor de dados: 190
Autores: Maeda, Shizuo; Andrade, Guilherme de Castro; Ferreira, Carlos Alberto; Silva, Helton Damin da; Agostini, Raul Bortolotto.
The aim of this work was to evaluate the seedling growth of Eucalyptus badjensis Beuzev. &amp; Welch in substrata prepared from different residues: pulp and paper mill wastes (organic sludge and cellulose mill liquid alkaline liquor), brewery malt and also goat manure. The experiment was carried out in the seedlings nursery of the Embrapa Florestas, in Colombo, Paraná. The organic sludge, cellulose mill liquid alkaline liquor and the brewer’s grain were previously composted with sawdust, and goat dung with pinus bark. A randomized blocks design with split-plot arrangement, with four replications was used. Plot treatments were the substrata and split-plot were base fertilization (with and without): 1) mixture of a commercial substratum prepared with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cellulose waste; Substratum; Seedling production. Resíduos; Substratos; Mudas.
Ano: 2011
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/202

Characterization of Substrates Elaborated with Organic Residues to Produce Forest Species Seedlings
Provedor de dados: 190
Autores: Maeda, Shizuo; Dedecek, Renato Antonio; Agostini, Raul Bortolotto; Andrade, Guilherme de Castro; Silva, Helton Damin da.
Considering the need for viable options for destination of waste from agricultural and agriindustries activities waste from logging and brewing industries and goat dregs previously composted, with potential foruse as substrates for the production of seedlings of trees were characterized chemically and physically. The treatments had consisted of the following mixtures: S1) commercial product for substratum (Plantmax® Florestal) + pinus bark partially decomposed - PB (1:1); S2) residue of malt with wooden sawdust - WS (1:4); S3) cellulosicmud with WS (1:1); S4) mixture of treatment S3 product with PB (1:1); S5) black-liquor with WS (4:1); S6) blackliquor with WS (3:2); S7) mixture of the product of treatment 6 with PB (1:1); S8) goat dregs. The following...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cellulosic mud; Black-liquor; Residue of malt; Goat’s grits; Physicist-chemistries characteristic Lodo celulósico; Lixívia celulósica; Lixívia negro; Bagaço de malte; Esterco de caprino; Características físico-químicas.
Ano: 2010
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/133

Efeitos da adubação fosfatada e da aplicação de resíduo de celulose no crescimento de Eucalyptus dunnii
Provedor de dados: 190
Autores: 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
Provedor de dados: 190
Autores: 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

Effects of Urban Waste and Mineral Fertilizers Applications on Eucalyptus grandis Growth and Soil Conditions
Provedor de dados: 190
Autores: Andrade, Guilherme de Castro; Bellote, Antônio Francisco Jurado; Silva, Helton Damin da; Dedecek, Renato Antônio; Gava, José Luiz Lui.
Forest plantations have been studied as a potential ecosystem able to absorb organic residues as fertilizers or soil conditioners. This study evaluate the effects of the application of composted organic waste and mineral fertilizers in a Eucalyptus grandis (W. Hill ex Maiden) plantation with 86 months of age in Neossolo Quartzarênico. It was analyzed wood production, litter decomposition and the physical and chemical changes in the soil properties. It was observed that the municipal composted organic wastes resulted in an increase of 45.6% in wood volume, as compared to the control. It also increase the velocity of the litterdecomposition on average of 28% and 16% for leaves and twigs respectively, increasing the pH level values and the availability of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Reforestation; Liter; Soil water. Plantios florestais; Resíduos; Adubação; Serapilheira; Água do solo.
Ano: 2011
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/205