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Poços de Caldas, Brazil

Fonseca e Cruz C.A.,Instituto Estadual Of Florestas | da Cunha A.C.M.C.M.,Instituto Federal Of Educacao | de Paiva H.N.,Federal University of Vicosa | Neves J.C.L.,Federal University of Vicosa
Revista Arvore | Year: 2011

Peltophorum dubium is a fast growing tree species, rustic and excellent for using in mixed forestation in degraded areas. Due to lack of information on the nutrition of this species, the objective of this work was to evaluate the effect of doses of N, P, K, Ca, Mg and S on the growth, biomass production and quality indexs of H/D, H/MSPA, MSPA/MSR and IQD seedlings, and to determine the recommended doses of those elements. In this work, carried out in a greenhouse, a dustrophycous red yellow latosoil was used as substratum. The experiment was designed in a Baconian Matrix, evaluating three doses of the six macronutrients and two additional treatments, one with reference doses and the other one without the addition of nutrients. It was used a complete random experimental design with four replicates. It was noted through the orthogonal contrasts, a significant response of all the variables studied with the application of macronutrients. The nutrients with the best significant effects were P and Mg, and the recommended doses were 600 mg/dm 3 of P, 0.2 cmolc/dm 3 of Mg, and minimum doses of 50 mg/dm 3 of K and 0.8 cmolc/dm 3 of Ca. It was not verified response to application of N and S, for any of the characteristics evaluated, which indicates that the species have a low need of these nutrients.


Fonseca e Cruz C.A.,Instituto Estadual Of Florestas | de Paiva H.N.,Federal University of Vicosa | da Cunha A.C.M.C.M.,Instituto Federal Of Educacao | Neves J.C.L.,Federal University of Vicosa
Ciencia Florestal | Year: 2011

Senna macranthera has great natural occurrence, with potential use in the recovery of degraded areas. However, there is need for information on the nutrition of native forest species. In that sense, the objectives of this study were to evaluate the effect of doses of N, P, K, Ca, Mg and S on growth and quality indices of seedlings of Senna macranthera and to determine their recommended doses. This study was carried out in a greenhouse, using a Red Yellow Argisol, removed from the layer below 20 cm depth, as substratum. The experiment was designed in a Baconian Matrix, and three doses of the six macronutrients and two additional treatments were evaluated, one with reference doses (fertilizer used by default for native species) and the other one without the addition of nutrients. An entirely casualized design was adopted, with four repetitions. The morphologic parameters and quality indices of seedlings were analyzed. Through orthogonal contrasts, a significant response of all the variables studied was verified in relation to the macronutrients applied. The species was most demanding of P and K in comparison to the other macronutrients, and the recommended doses were of 600 mg dm-3 of P and 200 mg dm-3 of K. It is recommended that further studies with lower doses of the nutrients N, Ca, Mg and S be carried out, since, according to this study, the best doses for these nutrients were found for the original soil used as substrate and the lowest dose of the applied treatment.


Santana A.P.,Federal University of Minas Gerais | Santana A.P.,Instituto Estadual Of Florestas | Isaias R.M.S.,Federal University of Minas Gerais
Acta Botanica Brasilica | Year: 2014

Galls are well distributed across the World and among plant families. Their diversity can support the status of conservation of an area as an urban park, once inventories are presented. These inventories also help to understand the morphological patterns of the galls, based on their most common shape, color, host botanical families, inducers and galled organs. This study is about an inventory of galls at Parque Estadual Serra Verde, Brazil. This conservation unit is an urban park strongly anthropized in a transition area of Cerrado and Mata Atlântica. Galls from four different trails were observed, and collected monthly during one year. The terminology morphospecies was used to distinguish the galls because the identification of the inducers were not always possible. Seventy five morphospecies of galls belonging to 43 host plant species of 24 botanical families were observed. Mostly of the galls was induced by Diptera:Cecidomyiidae, in Fabaceae and Myrtaceae. The most common traits were the globoid shape and green color. The leaves were the most frequent galled organ and followed by the stems. All these tendencies had been already observed in other inventories. Comparing current results with other studies at similar areas, we can assume that the Parque Estadual Serra Verde is very important for conservation. Urban green areas are subject to high disturbance and degradation but also increase the quality of life for the population inhabiting the areas nearby. The diversity of galls at Parque Estadual Serra Verde reflects an area with high levels of stress but with moderate botanical diversity. These features make this protected area an important site for the continuous conservation and regeneration, and highlight the environmental value of Parque Estadual Serra Verde. © 2014, Sociedade Botanica do Brasil. All rights reserved.


do Nascimento D.F.,Aloisio Amancio | dos Santos Leles P.S.,Federal Rural University of Rio de Janeiro | de Oliveira Neto S.N.,Federal University of Vicosa | Moreira R.T.S.,Instituto Estadual Of Florestas | Alonso J.M.,Federal Rural University of Rio de Janeiro
Cerne | Year: 2012

This work veriflied the influence of planting spacing on the initial growth of six forest species, at the age of 22 months, in plantations of forest recomposition in the Guandu River Basin. The experiment was installed in the SFE - thermoelectric power plants Barbosa Lima Sobrinho, located in the City of Seropédica-RJ. Forty eight tree species were planted, using the spacings, 1.0 x 1.0, 1.5 x 1.5, 2.0 and 2.0 x 3.0 x 2.0 m, which are the study treatments. At 22 months after planting, it was evaluated the growth in height, diameter at ground level (DNS) and area of the canopy for the species, Anadenanthera macrocarpa Benth. Brenan (angico vermelho), Schinus terebinthifolius Raddi (aroeira pimenteira), Schizolobium parahyba Blake (guapuruvu) Chorisia speciosa St. Hill (paineira), Cordia sp. (babosa branca) and Inga marginata (ingá). It was found that the studied species behaved in a different way in the differents spacing of planting, and that the planting density significantly influenced on the initial growth of all the species. In general, in wider planting spacings, the plants had higher growth.


Do Nascimento I.A.,Federal Rural University of Rio de Janeiro | Braz-Filho R.,State University of Norte Fluminense | De Carvalho M.G.,Federal Rural University of Rio de Janeiro | De Carvalho M.G.,Federal University of Rio de Janeiro | And 2 more authors.
Quimica Nova | Year: 2012

This the first phytochemical investigation of Mimosa artemisiana (Leguminosae-Mimosoideae) describing the isolation and identification of quercitrin, myricitrin, 3,5,4'-trihydroxi-6,7-dimethoxyflavone (6,7-dimethylkaepferol), flavolignans, 3-O-β-D-glucopyranosil sitosterol, lupeol, sitostenone, stigmastenone, campestenone, sitosterol, stigmasterol, campesterol, methyl indole-3-carboxilate and indole-3-carboxaldehyde in the extracts from the leaves and wood of this plant. This is the first registry of 6,7-dimethoxy,4'-hydroxy-flavona and the flavonolignans in this genera. The isolation of all metabolites was made by chromatographic methods and the structures were established on the basis of IR, MS, 1H and 13C NMR spectra analysis, comparison with literature data and GC-MS of mixtures analysis.

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