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Search Results: 1 - 10 of 13339 matches for " Mariluza Pinto Coelho Lacerda "
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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: Macronutrients concentrations in leave, stem, and root tissues of Schizolobium amazonicum Herb. were determined under greenhouse conditions using the missing element technique. The experimental design was a completely randomized block with four replications and 13 treatments. Seedlings 0.05–0.10 -m high were planted into 3 L pots filled with nutritive solution. Based on the concentrations of macronutrients in the leaves of the complete and the deficient treatments, suitable and deficient levels (g kg-1) of macronutrients for S. amazonicum are: a) suitable: 4 for P; 15 for K; 40 for Ca; 4 for Mg; and 3 for S; 33of B; 5 of Cu; 540 of Fe, 88 of Mn; and 71 of Zn; b) critical: 1 for P; 4 for K; 8 for Ca; 1 for Mg; and 2 for S; 31 of B; 4 of Cu; 140 of Fe; 38 of Mn; and 24 of Zn
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.
Qualidade de um solo sob diferentes usos e sob Cerrado nativo
Araújo, Ricardo;Goedert, Wenceslau J.;Lacerda, Marilusa Pinto Coelho;
Revista Brasileira de Ciência do Solo , 2007, DOI: 10.1590/S0100-06832007000500025
Abstract: sustainable soil use is becoming increasingly relevant given the increase of anthropic activities. in order to evaluate the soil quality, soil samples were collected from five areas: natural cerrado (reference), native pasture, planted pasture, annual crops under conventional tillage and pine forest. the areas are located in the federal district, brazil, in a clayey red yellow latosol (acrustox). the following soil quality attributes were measured: bulk density, mechanical resistance to penetration, water infiltration rate, organic matter content, cation exchange capacity, carbon of microbial biomass and basal respiration. based on the obtained data a comparative diagram was drawn and a soil quality index calculated for each type of use. the results showed a close inverse relationship between soil quality and intensity of use to which the areas were submitted. by analyzing these attributes and the establishment of a comparative model it was possible to evaluate the level of soil degradation caused by each type of use in each area.
Rela??es pedomorfogeológicas nas chapadas elevadas do Distrito Federal
Barbosa, Inara Oliveira;Lacerda, Marilusa Pinto Coelho;Bilich, Marina Rolim;
Revista Brasileira de Ciência do Solo , 2009, DOI: 10.1590/S0100-06832009000500029
Abstract: detailed studies of pedologic characterization, as well as of relationships between pedology, geology and geomorphology are important for the comprehension of the soil distribution in a landscape. the objective of this study was to evaluate the pedomorphogeological relationships in the chapadas elevadas of the distrito federal, by the chemical, physical, mineralogical and geochemical characterization of the soils found in this landscape compartment. two representative top-sequences of the pedologic distribution were selected in this geomorphologic unit, whose soils were formed from metasedimentary rocks of the grupo paranoá, represented by red oxisols (latosols), yellow-red oxisols and cambisols. the physical, chemical and mineralogical properties of the oxisols of the two top-sequences were mostly similar. the color variation in the oxisols was due to the differentiated fe oxide mineralogy - predominantly hematite in lv and goethite in lva. however, the icp-aes analysis showed similar fe2o3 levels in oxisols, indicating a material of origin (metasedimentary rock) with similar geochemical composition. the goethite formation in lva was related to the geomorphological position of development, on the edges of the plateau, where the water table oscillation resulted in the formation of a lithoplintic horizon, with consequently deficient drainage conditions. the cambisols were chemically similar to oxisols, due to the source material, consisting of pre-weathered sedimentary rock. the pedomorphogeological relations showed that the soil distribution in the chapadas elevadas of the distrito federal is linked to the geomorphologic evolution and regional geology.
Soils distribution model based on relation between geology, geomorphology and pedology, at the High Plateau of Distrito Federal, Brazil Modelo de distribución de suelos basado en la relación entre geología, geomorfología y edafología, en el Altiplano del Distrito Federal, Brasil
Inara Oliveira Barbosa,Marilusa Pinto Coelho Lacerda,Marina Rolim Bilich
Revista de la Asociación Geológica Argentina , 2010,
Abstract: Studies of the relation between geology and geomorphic surfaces are important for understanding the soil distribution in the landscape. In the Distrito Federal the scale survey does not evidence some pedologic features. This study aimed to generate a pedological distribution model in Distrito Federal High Plateau with more detailed scale, from the relations between geology, geomorphology and soils. The study area is located in the midwest portion of the Distrito Federal. To generate the soil map it was used geoprocessing tools (GIS) supported by field checking. The soil map was obtained from crossing the geoforms (hypsometric and slope) with the geology map. The established pattern of soil distribution in the Distrito Federal High Plateau was shown to be representative. The study allowed establishing the relations between the soil classes with geomorphology and defining altimetry classes, slope and geology on the soil occurrence. Los estudios de las relaciones entre geología y superficies geomórficas son importantes para entender la distribución de suelo en el paisaje. En el Distrito Federal la escala de levantamiento no evidencia rasgos pedológicos. Este estudio tiene como objeto generar un modelo de distribución pedológico en el Altiplano del Distrito Federal. Para generar el mapa de suelo fueron utilizadas herramientas de reprocesamiento soportadas por GIS para la verificación de campo. El mapa de suelo fue obtenido cruzando las geoformas (hipsométricas y pendiente) con el mapa geológico. Los dise os establecidos de distribución de suelo en el Altiplano del Distrito Federal fueron mostrados como representativos. El estudio permitió establecer las relaciones entre las clases de suelo con la geomorfología y definir clases de altimetría, pendiente y geología en las ocurrencias de suelo.
Helena Maria de Paula Santana,Marilusa Pinto Coelho Lacerda,Marco Aurélio Barros,Inara Oliveira Barbosa
Pesquisa Agropecuária Tropical , 2009, DOI: 10.5216/pat.v40i1.3839
Abstract: A sustainable environmental management, through a joint vision of natural resources, has been adopted for monitoring land sustainability, particularly those with agricultural use. This work aimed the characterization and definition of pedoenvironmental units, to provide subsidies to the development of sustainable land use plans, through the characterization of the main soil classes found in the Santa Tereza region, Tocantins State, Brazil, and their relations with the relief, geology, agriculture suitability, and land use and occupation, with the use of geoprocessing techniques. In the area of study, a pedological transect, with characterization of seven soil representative profiles, was conducted. The soils were classified as Dystrophic Rhodustox, Distrophic Plintustox, Distrophic Haplustox, Distrophic Haplustept, Typic Troppsamment, and Distrophic Tropsaprent, and over 63.5% of the total area was covered with native vegetation. According to the agricultural suitability evaluation, lands were classified as 2(b)c, 4p, 4(p), 5(n), and 6, and four pedoenvironmental units were individualized: Rhodustox domain, Plintustox domain, Rocks domain + Haplustept, and Quartzipsamment domain + Tropsaprent. KEY-WORDS: Tocantins State soils; agricultural suitability; pedoenvironment; environmental sustainability. A gest o ambiental sustentável, mediante vis o conjunta de recursos naturais, vem sendo adotada para o monitoramento da sustentabilidade do uso de terras, particularmente aquelas de uso agropecuário. Este trabalho teve como objetivo a caracteriza o e delimita o de unidades pedoambientais, a fim de fornecer subsídios para a elabora o de planejamentos de usos racionais de terras, por meio da caracteriza o das principais classes de solos da regi o de Santa Tereza (TO) e suas rela es com o relevo, geologia, aptid o agrícola e uso e cobertura das terras, com o auxílio de técnicas de geoprocessamento. Na área do estudo, foi estabelecido um transecto pedológico, onde foram caracterizados sete perfis pedológicos de representatividade regional. Os solos foram classificados como Latossolo Vermelho e Vermelho-Amarelo, Plintossolo Pétrico, Cambissolo Háplico, Neossolo Quartzarênico e Regolítico. Constatou-se que cerca de 63,5% da área encontra-se com cobertura vegetal nativa. A avalia o da aptid o agrícola das terras permit
Marco Túlio Guimar?es Silva,Marilusa Pinto Coelho Lacerda,Aurélio Alves Amaral Chaves
Pesquisa Agropecuária Tropical , 2009, DOI: 10.5216/pat.v39i4.3842
Abstract: The agricultural development in Goiás State, Brazil, demands growing land use, for times under inadequate management that could lead to environmental degradation. The objective of this research was to use geotechnology to evaluate land use at the Ribeir o Jo o Leite watershed, Goiás State, Brazil (between 16°13′S and 16°39′S, and 48°57′S and 49°11′W). Using the software Spring, thematic maps were generated, based on decisive factors of land agricultural conditions (soil fertility, water and oxygen deficiency, impediment to mechanization and susceptibility to erosion) for elaboration of land agricultural capability maps, at B and C management levels. Land use and occupation maps were also elaborated and subsequently submitted to cross tabulation operations with the agricultural capability generated maps, being obtained the recommended land use map. The results verified that most of the lands of the studied area are under recommended use or below its agricultural potential, with 71.34% and 66.16%, respectively, at B and C management. It was observed that only 1.81% (management B) and 0.92% (management C) of the area present land under inadequate use. These results characterize sustainability of the agricultural land use of Ribeir o Jo o Leite watershed, Goiás, Brazil. KEY-WORDS: Agricultural potential; geoprocessing; remote sensing; watersheds. O desenvolvimento agropecuário no Estado de Goiás demanda utiliza o crescente de terras, por vezes de maneira inadequada, podendo proporcionar degrada o ambiental. Este trabalho objetivou avaliar a adequa o do uso das terras na Microbacia do Ribeir o Jo o Leite, Goiás, Brasil (entre 16°13′S e 16°39′S, e 48°57′S e 49°11′W), utilizando-se geotecnologias. Por meio do software Spring, foram gerados mapas temáticos, baseados nos fatores determinantes das condi es agrícolas das terras (deficiência de fertilidade, água e oxigênio, impedimento à mecaniza o e susceptibilidade à eros o), para a elabora o dos mapas de aptid o agrícola, das terras da área de estudo, nos manejos B e C. Foi, também, elaborado o mapa de uso e ocupa o das terras, o qual foi, posteriormente, submetido a opera es de tabula o cruzada com os mapas gerados de aptid o agrícola, obtendo-se a adequa o do uso das terras. Os resultados constataram que a maior parte das terras da área estudada apresenta utiliza o de acordo ou abaixo do seu potencial agrícola, com 71,34% e 66,16%, respectivamente, n
Uso das terras da parte norte da bacia do Rio Descoberto, Distrito Federal, Brasil
Chaves, Aurélio Alves Amaral;Lacerda, Marilusa Pinto Coelho;Kato, Eiyti;Goedert, Wenceslau J.;Ramos, Maria Lucrécia Gerosa;
Bragantia , 2010, DOI: 10.1590/S0006-87052010000300024
Abstract: this work had the objective to evaluate the land use in the northern region of the environmental protection area of descoberto river, which encompasses the watersheds of the streams barroc?o, bucanh?o and cap?o da on?a, accomplished with the support of geoprocessing techniques. a land use map of the area was produced through analysis and treatment of spot 4 satellite images, obtained in 2003, using the software envi 3.6. then, the adequation of land use was checked using cross-tabulation between the maps of present and potential use for agriculture, with the software arcview 8.3, allowing development of a map of land use suitability. the results showed that most of the area has been used under its agricultural potential, characterizing sustainability in the use of the natural resources, particularly of the soils.
Indicadores de qualidade de Latossolo Vermelho sob diferentes usos
Chaves, Aurélio Alves Amaral;Lacerda, Marilusa Pinto Coelho;Goedert, Wenceslau J.;Ramos, Maria Lucrécia Gerosa;Kato, Eiyti;
Pesquisa Agropecuária Tropical , 2012, DOI: 10.1590/S1983-40632012000400002
Abstract: the evaluation and monitoring of soil quality, in the micro-drainage basins which contribute directly to the rio descoberto reservoir, in the rio descoberto drainage basin, distrito federal (df), brazil, are necessary, due to its disordered rural occupation. thus, this study aimed at evaluating the quality indicators of red latosol (rl), in micro-drainage basins located in the northern rio descoberto drainage basin, under diversified uses and managements: savannah (sa), reforestation (rf), native pasture (np), cultivated pasture (cp), agriculture with covered soil (ac) and agriculture with partial soil covering (ap). soil density (sd) presented the lowest value for sa and the highest one for ap. the cp area showed the highest values for soil resistance to penetration, reflecting the effect of animal trampling. the highest value for organic matter (om) was 55.5 g kg-1, in the cp, and the lowest one was observed in the ac (37.5 g kg-1), where decomposition processes are favored. the cation exchange capacity varied from 7.80 cmolc dm-3 (np) to 9.75 cmolc dm-3 (rf), pointing out the liming effect. the values obtained for microbial biomass carbon and basal respiration showed positive effects of the grass root system in the development of microorganisms. among the soil quality attributes evaluated, the om and sd stood out, confirming that a more intensive agricultural activity is directly related to the quality reduction of the rl evaluated.
Mapeamento preliminar de solos com horizonte B textural e B nítico na regi?o de Lavras, MG
Lacerda, Marilusa Pinto Coelho;Quéméneur, Joel Jean Gabriel;Andrade, Hélcio;Alves, Helena Maria Ramos;Vieira, Tatiana Grossi Chiquiloff;
Ciência e Agrotecnologia , 2009, DOI: 10.1590/S1413-70542009000300018
Abstract: studies of characterization of soils and establishment of relationships among pedology, geology and geomorphology allow the elaboration of models of soil distribution in landscaping. this study aimed at studies of this nature, with the purpose of representing the distribution of soils with argillic horizons in the landscape of lavras region, mg, through the generation of preliminary soil map, using geoprocessing techniques. the studies were accomplished on alfisols and ultisols, once these soils present characteristics related to the variation of the geochemistry composition of the igneous rocks of origin, reflecting on several attributes of the soils, emphasizing the color and the content of fe2o3. field trips were accomplished with morphological, physical and chemical evaluation of profiles of representative soils, developed from geological units of different geochemical compositions, establishing the pedogeologic relationships and also verifying the distribution of the soils in the landscape, with the establishment of the pedogeomorphologic relationships. it was observed that such soils are developed in the area of relief characterized by slopes from 12% to 45%, originating different soils classes with argillic horizons, directly related to the variation of the parent material. the criteria established in the relationships among pedology, geology and geomorphology allowed evaluating the distribution of the soils in the studied landscape, and the generation of a preliminary soil map, with individualization of soils with argillic horizons.
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