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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.
INITIAL GROWTHING OF PARICá (Schizolobium amazonicum) UNDER NUTRIENT OMISSION AND SODIUM IN NUTRITIVE SOLUTION
Teresa Cristina Lara Lanza de Sá e Melo Marques,Janice Guedes de Carvalho,Mariluza Pinto Coelho Lacerda,Paulo Emílio Ferreira da Mota
CERNE , 2004,
Abstract: This paper aimed to evaluate the production of dry matter in leaves, stems and roots, to identify the effect of nutritional deficiencies, and to describe visual symptoms of macro and micronutrients deficiencies in Shizolobium amazonicum Herb. Seedlings were grown in a greenhouse experiment in 13 treatments. The deficiencies due to macro and micronutrients markedly decreased the production of dry matter. The Schizolobium amazonicum showed different responses to treatments. In the first few weeks, the seeds were able to supply P in the necessary amount but, due to fast growth rates, N was the limiting factor at this stage. Nitrogen and Fe were the most limiting and Mg, S, and Cu, were the least limiting to growth. Sodium was also less limiting to growth.
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.
Aspectos fisiológicos da germina??o e da qualidade de plantulas de Schizolobium amazonicum em resposta à escarifica??o das sementes em lixa e água quente
Shimizu, Elizabeth Santos Cordeiro;Pinheiro, Hugo Alves;Costa, Marcelle Auday;Santos Filho, Benedito Gomes dos;
Revista árvore , 2011, DOI: 10.1590/S0100-67622011000500004
Abstract: seeds of schizolobium amazonicum present physical dormancy which can be broken through different scarification methods. in this work, the effects of sandpaper and hot water seed scarification on physiological aspects related to seed germination and seedling quality were evaluated. seeds of s. amazonicum were scarified by (i) immersion in water at 100°c/2 min and (ii) by scrubbing seeds on sandpaper. non-scarified seeds were used as control. the following variables were evaluated: tissue viability (by using tetrazolium test), germination rate, speed germination index (sgi), seed imbibition rate, endosperm depletion, and seedling emergence rate, uniformity and biomass accumulation. seeds from both treatments were equally dyed by tetrazolium. seeds scarified on sandpaper showed higher germination rate, higher sgi, faster seed imbibition and endosperm depletion than those scarified in water at 100°c/2 min. seeds scarified on sandpaper presented higher seedling emergence rate and emergence index, and their seedlings were more uniform and with greater biomass than those obtained after scarification in water at 100°c/2 min. therefore, scarification of paricá seeds on sandpaper is more efficient in promoting germination and production of uniform seedlings.
Scarification with sulphuric acid of Schizolobium amazonicum Huber ex Ducke seeds - FABACEAE
Cruz, Eniel David;Carvalho, José Edmar Urano de;Queiroz, Rafaela Josemara Barbosa;
Scientia Agricola , 2007, DOI: 10.1590/S0103-90162007000300017
Abstract: seed coat impermeability to water occurs in many species, including schizolobium amazonicum huber ex ducke. to promote germination in seeds with coat impermeability the use of sulphuric acid (h2so4) is recommended. the objective of this study was to identify a better time for the scarification with sulphuric acid for s. amazonicum seeds. the effect of scarification with sulphuric acid for 20, 40 and 60 min on germination and speed germination was studied for seeds that were either sowed immediately after scarification or after a 24-hour period of immersion in water. seeds were sown on a mix of sand and sawdust (1:1). the experimental design was completely randomized with four replications of 50 seeds. the statistical analysis of germination was carried out at six, nine, 12, 15, 18, 21 and 24 days after sowing, in a factorial scheme. for speed germination the means were compared by the tukey test. there was an interaction between treatments to overcome dormancy and immersion time after scarification in most evaluations. immersion in water accelerated the beginning of germination. all treatments to overcome dormancy promoted seed germination. however, scarification for 60 min, showed better germination, 92% when immediately sown and 86.5% when sown after 24 hours. speed germination index was highest for scarified seeds for 60 min followed by immersion in water. scarification for 60 min was the most efficient treatment to promote germination in s. amazonicum seeds.
Nitrogen Metabolism, Carbohydrates and Sucrose in Young Plants of Paricá (Schizolobium amazonicum) Submitted to Different Dosages of Aluminum  [PDF]
Vitor Resende do Nascimento, Diana Jhulia Palheta de Sousa, Jéssica Suellen Silva Teixeira, José Jean Borges Le?o, Liliane Correa Machado, Glauco André dos Santos Nogueira, Candido Ferreira de Oliveira Neto, Ana Ecídia de Araújo Brito, Ricardo Shigueru Okumura, Waldemar Viana de Andrade Júnior
American Journal of Plant Sciences (AJPS) , 2018, DOI: 10.4236/ajps.2018.94066
Abstract: The paricá [Schizolobium amazonicum Huber ex Ducke] is a native species of the Amazon region, belonging to the Fabaceae family and is a legume that has great social and economic importance, raw material for the manufacture of wood panels. Heliophilous, with wood of light density and good workability. Amazonian soils are highly weathered and characterized by high acidity, so Al harms the growth and development of sensitive plants, as well as the presence of resistant and/or tolerant plants. Thus, in this work, we sought to study the biochemical metabolism alterations generated in young plants of Schizolobium amazonicum Huber ex Ducke affected at different dosages of AlCl3. The research was conducted in a greenhouse of the Federal Rural University of Amazonia, using pre-scarified paricá seeds, which were seeded in plastic containers of 3.5 L capacity, with black soil fertilized with NPK 15-15-20. On the 8th day after sowing (DAS), thinning of 5 seedlings was performed for 2, and on day 12 of 2 for 1 seedling. The treatments started after 1 month and 22 days of sowing and the plants were collected 24 days later. A completely randomized experimental design (RED) was used, with 6 treatments (Control, Al 15 mg/L-1, Al 30 mg/L-1, Al 45 mg/L-1, Al 60 mg/L-1 and Al 75 mg/L-1) with 5 replicates each (one plant/pot) totaling 30 experimental units. The AlCl3 dosages resulted in considerable changes in the biochemical variables
Occurrence of Quesada gigas on Schizolobium amazonicum trees in Maranh?o and Pará States, Brazil
Zanuncio, José Cola;Pereira, Fabrício Fagundes;Zanuncio, Teresinha Vinha;Martinelli, Nilza Maria;Pinon, Tobias Baruc Moreira;Guimar?es, Edylene Marota;
Pesquisa Agropecuária Brasileira , 2004, DOI: 10.1590/S0100-204X2004000900015
Abstract: an infestation of quesada gigas olivier (hemiptera: cicadidae) on "paricá" schizolobium amazonicum (huber) ducken (fabales: fabaceae) was reported in the municipalities of itinga, maranh?o state and paragominas, pará state. nymphs of this insect on roots and adults and exuvias on trunks of the plant were observed. exit holes of nymphs in the soil were also observed. the occurrence of q. gigas on s. amazonicum shows the damage potential of this species and the necessity of developing integrated management programs for species of this group, specially in reforested areas with "paricá".
Respostas de plantas de Schizolobium amazonicum [S. parahyba var. amazonicum] e Schizolobium parahyba [Schizolobium parahybum] à deficiência hídrica
Carvalho, Cláudio José Reis de;
Revista árvore , 2005, DOI: 10.1590/S0100-67622005000600009
Abstract: juvenile plants of s. amazonicum (paricá) and s. parahyba (guapuruvu) were subjected to two cycles of water stress in greenhouse conditions. the water deficit induced the increase in total soluble amino acids, proline, total soluble sugars and k+ contents in the leaf tissues, lowering osmotic potential values in both species. however, the analysis of the pressure-volume curve results suggests that the species respond differently to water stress, and that s. amazonicum presents greater capacity of osmotic adaptation than s. parahyba.
Modeling Growth and Yield of Schizolobium amazonicum under Different Spacings  [PDF]
Gilson Fernandes da Silva,Salvador Alejandro Gezan,Carlos Pedro Boechat Soares,Luciano Zumerle Zaneti
International Journal of Forestry Research , 2013, DOI: 10.1155/2013/675137
Abstract: This study aimed to present an approach to model the growth and yield of the species Schizolobium amazonicum (Paricá) based on a study of different spacings located in Pará, Brazil. Whole-stand models were employed, and two modeling strategies (Strategies A and B) were tested. Moreover, the following three scenarios were evaluated to assess the accuracy of the model in estimating total and commercial volumes at five years of age: complete absence of data (S1); available information about the variables basal area, site index, dominant height, and number of trees at two years of age (S2); and this information available at five years of age (S3). The results indicated that the 3 × 2 spacing has a higher mortality rate than normal, and, in general, greater spacing corresponds to larger diameter and average height and smaller basal area and volume per hectare. In estimating the total and commercial volumes for the three scenarios tested, Strategy B seems to be the most appropriate method to estimate the growth and yield of Paricá plantations in the study region, particularly because Strategy A showed a significant bias in its estimates. 1. Introduction In the past, logging of high-grade trees in Brazilian natural forests occurred in an unplanned and predatory way. At present, the trend is toward increasingly rigorous environmental legislation to prevent illegal harvesting of natural forests. In Brazil, most wood still comes from native forests. Companies that produce pulpwood and fuelwood constitute a minor part of the total timber production and often fill their needs with their own supply. In contrast, companies that produce sawtimber and plywood correspond to a large proportion of the total production and usually require wood from native forests. The increasing difficulty removing wood from native forests due to legislation or supply has resulted in some companies beginning to produce high economic value species through commercial plantations. However, little is often known about the silviculture of some of these native species, and it is typically difficult to find improved genetic material for high yields and more homogeneous forests. One attractive native species that has been planted in recent years due to its favorable characteristics is Schizolobium amazonicum Huber ex Ducke, known in Brazil as Paricá. This species has rapid growth, a straight bole, natural pruning, and highly valued wood in domestic and foreign markets [1, 2]. Paricá has been widely cultivated by timber companies in the northern and northeastern regions of Brazil, mainly in the
Evaluation of potentical use of the wood of Schizolobium amazonicum “Paricá” and Cecropia hololeuca “Embaúba” for wood cement board manufacture  [PDF]
Setsuo Iwakiri,Leandro Soares da Silva,Rosilani Trianoski,Ghislaine Miranda Bonduelle
CERNE , 2012,
Abstract: This research was developed to evaluate the potential use of Schizolobium amazonicum “Paricá” and Cecropia hololeuca “Embaúba” wood for wood cement board manufacture. Panels with the density of 1.200 kg/m3 were made, using cement CP V ARI as mineral bonding and wood particles without treatment and treated with immersion in cold water, hot water and sodium hydroxide. The panels were pressed at the pressure of 40 kgf/cm2, room temperature and press / clipping time of 24 hours and maturation time of 28 days. The evaluation of the properties of water absorption, thickness swelling, internal bond, modulus of elasticity and modulus of rupture, showed that Schizolobium amazonicum “Paricá” and Cecropia hololeuca “Embaúba” wood are technically feasible for wood-cement board manufacture. It was also found that the panels of embaúba exhibit some properties superior to those of the paricá, and the particles do not necessarily need treatment.
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