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Propriedades de painéis aglomerados fabricados com partículas de eucalipto (Eucalyptus urophylla), paricá (Schizolobium amazonicum) e vassoura (Sida spp.)
Bianche, Juliana Jerásio;Carneiro, Angélica de Cássia Oliveira;Vital, Benedito Rocha;Pereira, Flávia Alves;Santos, Rosimeire Cavalcante dos;Soratto, Déborah Nava;
CERNE , 2012, DOI: 10.1590/S0104-77602012000400012
Abstract: the genus sida may become a promising alternative source for the production of particleboards. nowadays it is used for manufacturing ropes due to the quality of its fibers, however, there is no research relating the production of particleboards using this lignocelluloses material. this study aimed to evaluate the effect of eucalyptus (eucalyptus urophylla), paricá (schizolobium amazonicum) and vassoura (sida spp.) on the physical and mechanical properties of particleboard. particleboard contained 25, 50, 75 and 100% of eucalyptus and paricá or eucalytus and vassoura or paricá an vassoura were fabricated. two (6% and 8%) amounts of urea-formaldehyde adhesive were used. the physical and mechanical properties were determined according to nbr / abnt 14810-3 (associa??o brasileira de normas técnicas - abnt, 2002). it was observed that increase in resin content in the improved some physical and mechanical properties. it was concluded that the amount of vassoura particles on panels had different effects depending on the species used. the increase in the percentage of vassoura particles in the eucalyptus panels did not affect the internal bond, screw withdrawal and hardness. increasing the percentage of vassoura particles on the panels produced with paricá did not affect its hardness and resistance to screw withdrawal. the panels produced with vassoura particle absorbed more water and, consequently, increased the thickness swelling, and therefore is not recommended for use in environments with high humidity. it was concluded that the genus sida, in general, has potential for particleboard production.
THE EFFECT OF BORON DOSES ON PARICA (Schizolobium amazonicum Herb.)
Sebasti?o Ferreira de Lima,Rodrigo Luz da Cunha,Janice Guedes de Carvalho,Carlos Alberto Spaggiari Souza
CERNE , 2003,
Abstract: An experiment was conducted in a greenhouse in order to evaluate the effects of boron on parica growth and on concentration and contents of macro and micronutrients indry matter of shoots and roots. Six treatments constituted by boron doses of 0.0; 0.1; 0.3; 0.9;1.5 and 2.1 mg/dm3 in four replications were used. It was evaluated the characteristics:visual diagnostic, plants height and diameter, dry matter production of shoots and roots,concentration and contents of nutrients in dry matter of shoots and roots. The symptoms ofdeficiency can be observed in new leaves and roots and the toxicity in older leaves. Bothboron deficiency and excess inhibits plants growth, but toxicity is more damaging. The Comportamento do paricá (Schizolobium amazonicum Herb.) submetido ...193approximate dose of 0 Estimate of average equilibrium moisture content of wood for 26Brazilian states, by Hailwood and Harrobin one hydrate sorption theory equation.15mg/dm3 was the best for plants growth in MSPA and MSRA. The concentration of boronincreased in MSPA and MSRA with application of increasing concentration of B, with a smallreduction in concentration of MSRA from the concentration 1.9 mg/dm3. The toxicity of boronbegins when concentration reaches 36.06 mg/dm3 in shoots and 32.38 in roots. The contentsof all nutrients, except Mn and Fe in MSPA and Cu, Fe and B in MSRA, followed its own drymatter production curves.
Production of laminated veneer lumber LVL using veneer of Schizolobium amazonicum, Eucalyptus saligna and Pinus taeda  [PDF]
Setsuo Iwakiri,Jorge Luis Monteiro de Matos,Juliana Afonso Pinto,Lívia Cássia Viana
CERNE , 2010,
Abstract: This research evaluated the quality of laminated veneer lumber - LVL manufactured with veneers of Schizolobium amazonicum (paricá), Eucalyptus saligna and Pinus taeda. The LVL panels were manufactured in the laboratory conditions composed by seven veneers, 2,0 mm thickness, with different structural compositions, using phenol-formaldehyde resin. The veneers of Schizolobium amazonicum- paricá- were pre-classified by using stress wave machine. The veneers of Eucalyptus saligna and Pinus taeda were disposed in the face layer to reinforce the structural strength of LVL panels. The LVL quality was evaluated using glue line shear strength and static bending test (MOE and MOR, edge and flat). Grading of paricá veneers based on MOEd did not affected significantly the results of the glue line shear strength and MOE and MOR edge. For the MOE and MOR flat, the use of veneers of MOEd grade 1 contributed significantly to increasing the average values of these properties. In the same way, using the Eucalyptus saligna veneers on the face of LVL resulted in higher average values of MOE and MOR, edge and flat.
Occurrence of Pantophthalmus kerteszianus and P. chuni (Diptera: Pantophthalmidae) on parica in Para State, Brazil Ocorrência de Pantophthalmus kerteszianus e P. chuni (Diptera: Pantophthalmidae) em paricá, no Estado do Pará
Alexandre Mehl Lunz,Telma Fátima Coelho Batista,Valéria do Socorro Vale do Rosário,Odineila Martins Monteiro
Pesquisa Florestal Brasileira , 2010, DOI: 10.4336/2012.pfb.61.71
Abstract: This is the first register of Pantophthalmus kerteszianus Enderlein e P. chuni Enderlein (Diptera: Pantophthalmidae) attacking parica trees [Schizolobium parahyba (Vell.) S. F. Blake var. amazonicum (Huber ex Ducke) Barneby] in Paragominas, Para State, Brazil. Whereas Para State has the largest area with parica plantation in Brazil, there is a risk of these insects become important pests of this crop. doi: 10.4336/2010.pfb.30.61.71 As ocorrências de Pantophthalmus kerteszianus Enderlein e P. chuni Enderlein s o registradas pela primeira vez em reflorestamentos com paricá [Schizolobium parahyba (Vell.) S. F. Blake var. amazonicum (Huber ex Ducke) Barneby] no Estado do Pará, Município de Paragominas. Considerando que o Pará possui a maior área plantada de paricá no Brasil, existe o risco de esses insetos tornarem-se pragas importantes dessa cultura. doi: 10.4336/2010.pfb.30.61.71
Análise econ mica dos sistemas de cultivo com Schizolobium parahyba var. amazonicum (Huber ex Ducke) Barneby (Paricá) E Ananas comosus var. erectifolius (L. B. Smith) Coppus & Leal (Curauá) no município de Aurora do Pará (pa), Brasil Economical analysis of cultivation systems with Schizolobium parahyba var. amazonicum (Huber ex Ducke) Barneby (Parica) and Ananas comosus var. erectifolius (L. B. Smith) Coppus & Leal (Curaua) crop at Aurora do Pará, Brazil
Castro Coimbra Cordeiro,A Cordeiro de Santana,O.A Lameira,I Matos Silva
Revista de la Facultad de Agronomía , 2009,
Abstract: O objetivo do trabalho foi analisar a viabilidade econ mica dos sistemas de cultivo com Schizolobium parahyba var. amazonicum (Huber ex Ducke) Barneby e Ananas comosus var. erectifolius (L. B. Smith) Coppus & Leal, considerando-se três sistemas distintos: I) Monocultivo de Paricá; II) Monocultivo de Curauá; e III) Sistema Paricá e Curauá. Os sistemas foram implantados no Campo Experimental da Empresa Tramontina Belém, localizado no município de Aurora do Pará (PA). A partir dos registros das contas de despesa e receita do or amento unitário, elaborados para cada sistema, foi construído o fluxo de caixa. A viabilidade econ mica foi determinada por meio do valor presente líquido (VPL), raz o benefício/custo (B/C) e taxa interna de retorno (TIR). Utilizou-se como custo de oportunidade uma taxa de juros de longo prazo de 12% ao ano. Os custos e as receitas foram mensurados em R$/ha. Os resultados mostraram que o monocultivo de Curauá apresentou o maior VPL (R$ 19.853,44), seguido do sistema agroflorestal de Paricá e Curauá (R$ 9.507,795). O sistema Paricá e Curauá apresentou a maior rela o benefício/custo (1,29) enquanto a menor ficou com o monocultivo de Paricá. Das atividades analisadas, o monocultivo de Curauá apresentou maior TIR (44%), seguido do sistema Paricá e Curauá (33%), valores superiores ao custo de oportunidade. A associa o Paricá e Curauá mostrou-se economicamente viável, tanto para agricultores que desejam implantar um povoamento florestal, quanto para as empresas madeireiras interessadas na redu o dos custos da implanta o de povoamentos florestais. The main purpose of this work was to analyze the economic viability of crop systems with Schizolobium parahyba var. amazonicum (Huber ex Ducke) Barneby and Ananas comosus var. erectifolius (L. B. Smith) Coppus & Leal, considering three distinct systems: I) parica Monoculture; II) Curauá monoculture; and III) Paricá + Curauá system. The experiment was carried out in the Tramontina's Belém experimental field in Aurora do Pará, PA. From the registers of the accounts of expenditure and prescription of the unitary budget, elaborated for system each, a box flow was elaborated. The economic viability was determined through calculations of: Net Present Value (NPV), Benefit/cost ratio (B/C.R), Break-even point (BEP) and Internal Rate of Return (IRR) in three distinct activities. For tax calculations of a 12% of discounting was chosen. The costs and the prescriptions had been esteem in R$/ha. Results showed that Curauá monoculture had a greater VPL (R$ 19,853.44), followed by the plantation of parica a
Propriedades de chapas fabricadas com partículas de madeira de Eucalyptus urophylla S. T. Blake e de Schizolobium amazonicum Herb.
Naumann, Rafael Baptista;Vital, Benedito Rocha;Carneiro, Angêlica de Cássia Oliveira;Lucia, Ricardo Marius Della;Silva, José de Castro;Carvalho, Ana Márcia Macêdo Ladeira;Colli, Andréia;
Revista árvore , 2008, DOI: 10.1590/S0100-67622008000600020
Abstract: this work aimed to evaluate the properties of particleboards produced with eucalyptus urophylla (density 0.55 g/cm3) and schizolobium amazonicum (density 0.30 g/cm3).five wood proportions and two types of particle (shavings and chips) were used to manufacture the boards. board dimension was 60 cm x 60 cm x 1 cm and average density 0.60g/cm3. eight percent of urea-formaldehyde adhesive was used. boards were pressed at 170 oc and 32 kgf/cm2 of pressure in 8 minute cycles. board properties were determined according to nbr 14810-3 standard. there was no influence of the variables on board density and linear expansion. generally,increasing the percentage of paricá increased the values of some properties such as moe, mor, screw holding, water absorption after 24 hours and internal bond, probably due to increased compaction rate. the type of particle used affected only the internal bond and thickness swelling of the boards. the boards produced with wood chip-originated particles (smaller slenderness ratio) presented higher internal bond. however, thickness swelling was higher.
Cancro em Paricá (Schizolobium parahyba var. amazonicum) no Estado do Pará Canker Disease of Parica (Schizolobium parahyba var. amazonicum) in Para State, Brazil
Célia Regina Tremacoldi,Alexandre Mehl Lunz,Fábio Renato de Souza Costa
Pesquisa Florestal Brasileira , 2010, DOI: 10.4336/2012.pfb.59.69
Abstract: Plantios de paricá, avaliados no Município de Dom Eliseu, Estado do Pará, apresentaram sintomas de cancro. Várias espécies de fungos foram associadas ao cancro observado no campo, mais notavelmente Lasiodiplodia theobromae e Pestalotiopsis sp. Culturas isoladas destes fungos, frequentemente associados a outros (incluindo Fusarium oxysporum, Alternaria e basidiomicetes), foram testadas quanto à patogenicidade em plantas jovens de paricá, com aproximadamente um metro de altura. Apenas L. theobromae produziu cancro sob as condi es testadas, quando discos de cultura foram aplicados usando técnicas de inocula o por ferimento e alta umidade, reproduzindo perfeitamente os sintomas do campo. Pestalotiopsis sp. causou danos muito menores quando comparado a L. theobromae. A confirma o de L. theobromae como agente causal do cancro em paricá ocorreu após o reisolamento do fungo a partir dos tecidos sintomáticos das plantas inoculadas em casa-de-vegeta o, concluindo a verifica o dos Postulados de Koch. Este é o primeiro relato deste patógeno em paricá. Doi: 10.4336/2009.pfb.59.69 Canker have been found in field plantings of parica examined in Dom Eliseu county, Para State, Brazil. Several fungal species were associated with the field canker, most notably Lasiodiplodia theobromae and Pestalotiopsis sp. Isolated cultures of these fungi together with other often associated fungi (including Fusarium oxysporum, Alternaria, basidiomycetes) were tested for pathogenicity on young parica plants, with approximately one meter height. Only L. theobromae produced canker under the conditions tested when discs of culture were applied using wound inoculation techniques and high humidity, which closely mimicked the field symptoms. Pestalotiopsis sp. proved much less damaging compared to L. theobromae. The acknowledgment of L. theobromae as the causal agent of parica canker came after the reisolations of the fungus from symptomatic tissue of inoculated plants, concluding the verification of Koch’s Postulates. This is the first report of this pathogen in paricá.
EFFECT OF BAP ON PROLIFERATION OF Schizolobium amazonicum Huber ex Ducke (PARICA) SHOOTS, IN VITRO
Iracema Maria Castro Coimbra Cordeiro,Osmar Alves Lameira,Selma Toyoko Ohashi,Louise Ferreira Rosal
CERNE , 2004,
Abstract: Parica is a native tropical forest plant pertaining to the ofcaesalpinaceae family. It is species considered of great potential, due its wide use. Aiming reproducing the species, in vitro, stem segments of plantlets established in vitro were excised and inoculated on solid MS supplemented with 0; 1,0; 1,5; 2,0; 2,5 and 3,0 mg.L-1 of BAP with 3% of sucrose, 0,1% of PVP and one control. The activities had been carried out in the Laboratory of Genetic Resources and Biotechnology of the Embrapa Oriental, Amazon, and Belem (PA). The cultures had been under sun photo period for 16 hours 25+ 1°C of temperature. After three weeks of cultivation the explants were evaluated, counting the number and length of explants shoots. The treatment with 3 mg.L-1 BAP presented greater number of shoot proliferation with 2,14 for explants. The shoots were transferred to MS medium in the same conditions of culture for rooting.
Análise econ?mica dos sistemas de cultivo com Schizolobium parahyba var. amazonicum (Huber ex Ducke) Barneby (Paricá) E Ananas comosus var. erectifolius (L. B. Smith) Coppus & Leal (Curauá) no município de Aurora do Pará (pa), Brasil
Castro Coimbra Cordeiro,; Cordeiro de Santana,A; Lameira,O.A; Matos Silva,I;
Revista de la Facultad de Agronomía , 2009,
Abstract: the main purpose of this work was to analyze the economic viability of crop systems with schizolobium parahyba var. amazonicum (huber ex ducke) barneby and ananas comosus var. erectifolius (l. b. smith) coppus & leal, considering three distinct systems: i) parica monoculture; ii) curauá monoculture; and iii) paricá + curauá system. the experiment was carried out in the tramontina's belém experimental field in aurora do pará, pa. from the registers of the accounts of expenditure and prescription of the unitary budget, elaborated for system each, a box flow was elaborated. the economic viability was determined through calculations of: net present value (npv), benefit/cost ratio (b/c.r), break-even point (bep) and internal rate of return (irr) in three distinct activities. for tax calculations of a 12% of discounting was chosen. the costs and the prescriptions had been esteem in r$/ha. results showed that curauá monoculture had a greater vpl (r$ 19,853.44), followed by the plantation of parica and curaua (r$ 9,507.795). the paricá and curauá system showed a high benefit/cost relation (1.29), while parica monoculture the b/c.r was less than 1. among the analyzed activities, the curauá monoculture showed a greater tir (44%) followed by the paricá and curauá system (33%). the association between paricá and curauá showed to be economically recommendable, as for agriculturists, whom they desire to implant a forest stand, as for companies interested in the reduction of the forest costs.
Viabilidade Econ mica de Sistemas Silvipastoris com Schizolobium parahyba var. amazonicum e Tectona grandis no Pará Economical Viability of Silvopastoral Systems with Schizolobium parahyba var. amazonicum Barneby and Tectona grandis in Para, Brazil  [cached]
Rosana Quaresma Maneschy,Ant?nio Cordeiro de Santana,Jonas Bastos da Veiga
Pesquisa Florestal Brasileira , 2010, DOI: 10.4336/2012.pfb.60.49
Abstract: Os sistemas silvipastoris (SSPs) consistem de um conjunto de metodologias que podem ser consideradas promissoras para recuperar áreas de pastagens degradadas da Amaz nia, por integrar o cultivo arbóreo ao pecuária tradicional. Embora já utilizados em pequena escala por produtores inovadores, os SSPs carecem de uma base científica que forne a subsídios técnicos ao seu uso mais amplo, sobretudo quando se trata de justificar a viabilidade econ mica desses sistemas. O objetivo desse estudo foi analisar a viabilidade econ mica de SSPs utilizados por produtores no nordeste do Estado do Pará, comparando-os ao monocultivo tradicional. Os sistemas s o compostos basicamente pelo paricá (Schizolobium parahyba var. amazonicum (Huber ex Ducke) Barneby) ou teca (Tectona grandis L.F.), em pastagens de quicuio-da-amaz nia (Brachiaria humidicola (Rendle) Schweick) pastejados por bovinos. A análise de viabilidade econ mica foi realizada por meio dos métodos: valor presente líquido (VPL), taxa interna de retorno (TIR) e rela o benefício/custo (Rb/c), considerando quatro SSPs e o monocultivo de paricá e teca. Os sistemas compostos por teca apresentam maior atratividade econ mica do que os com paricá, e dentre eles, os arranjos silvipastoris, em que o gado era próprio, foram considerados de melhor viabilidade que os sistemas em monocultivo ou em que a incorpora o animal se dava através do aluguel da pastagem. doi: 10.4336/2009.pfb.60.49 The silvopastoral systems (SPSs) have been considered promising to integrate tree crops in livestock production systems and reclain large areas of degraded pastures of the Brazilian Amazon. They are used on small scale by innovative farmers, the SPSs lack a scientific basis to provide technical subsidies to its wider use, especially when it comes to justifying the economic viability of these systems. The objective of this study was to analyze the economical viability of SPSs, established in farms areas used by producers in the Northeast State of Para and comparing to the traditional monoculture. The systems are composed basically by parica (Schizolobium parahyba var. amazonicum (Huber ex Ducke) Barneby) or teak (Tectona grandis L. F.) in kikuyu grass (Brachiaria humidicola (Rendle) Schweick) under cattle grazing. The analysis of economical viability was realized by the indicators: net present value (NPV), internal rate of return (IRR) and benefit-cost ratio (Rb/c), considering the four models of SPSs and monoculture of parica and teak. The systems composed by teak are economically more attractive than that with paricá, and among all silv
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