Influência do uso e ocupação do solo sobre a qualidade da água: subsídio à gestão dos recursos hídricos à gestão dos recursos hídricos da Bacia Hidrográfica da Serra da Mantiqueira (UGRHI-1)

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Avaliação temporal e espacial do balanço de radiação, de energia e da evapotranspiraçâo no noroeste paulista, face a mudança no uso do solo

Pós-graduação em Agronomia - FEIS

Efeitos de práticas de descompactação do solo em área sob sistema plantio direto

Soil compaction is one of the limiting factors in areas subjected to direct seeding. The method used to break up the compacted layer should disturb the soil as little as possible, as well as maintain the ground cover. The aim of this study was to evaluate the influence of subsoiling, scarification and use of shaft-type furrowing mechanisms when sowing, on preserving the ground cover, water content and soil density, as well as the effects on maize yield in a dystroferic Red Nitosol, cultivated under a system of direct seeding for ten years. The experimental design was of randomised blocks, with eight soil management treatments: subsoiling to a depth of 0.40 m before sowing the winter crop, subsoiling to 0.40 m before sowing the maize, scarification to 0.30 m before the winter crop, scarification to 0.30 m before the maize, scarification to 0.20 m before the winter crop, scarification to 0.20 m before the maize, direct seeding of the maize with a shaft-type furrowing mechanism and direct seeding of the maize using a double disc furrower. There were four replications. Subsoiling and scarification influenced the preservation of the ground cover, soil density and water content immediately after sowing, but did not interfere in plant development or grain yield in the maize crop. The use of shaft-type furrowing mechanisms in the sowing operation had no effect on any of the parameters under study.

Estudo da influência da cinza de casca de arroz e da cal nas propriedades do solo-cimento auto-adensável

Pós-graduação em Engenharia Civil - FEIS

Implicações da disposição de lodo de estação de tratamento de esgoto em solo no Brasil

The management of solid waste originated from the treatment of domestic and industrial sewage in wastewater treatment plants is a current challenge in the Brazilian reality. However, the planning and the final destination of sludge end up being overlooked, causing serious damage to human health and the environment. The use of sewage sludge in the agriculture is growing in Brazil and is regulated by the Resolução CONAMA Nº 375/2006 which establishes the criteria and parameters so that the sludge can be disposed on the ground safely to the environment and the population. This study aims to define the effects of using sewage sludge in soil according to the results of the bibliographic survey of theoretical and practical studies using this waste in the recovery and conditioning of soil for agriculture and recuperation of degraded areas, and to define whether such type of sludge recycling is environmentally and socially feasible and safe. It can be said that the reuse of sewage sludge in soil meets the search requirements for an alternative that brings agronomic, environmental and economic benefits, as well as being an environmental and social healthy alternative if properly attended the laws that deal with the subject, anyway those should be reviewed and updated taking into account Brazilian soil and climate conditions, thus justifying need for more studies in the area

Estudo de parâmetros climáticos como subsídio à gestão ambiental da vertente paranaense da bacia hidrográfica do rio Itararé

Pós-graduação em Geografia - FCT

Efeitos da disposição de lodo de ETE de indústria alimentícia no solo: estudo de caso

Pós-graduação em Geociências e Meio Ambiente - IGCE

Análise das relações entre parâmetros geolétricos e vazões para o aquífero livre de Caçapava do Sul - RS

The geophysical methods may be employed in aquifer system studies, as determination of groundwater level, soil/rock contact, beyond estimative of the aquifer thickness horizon. The geoeletric methods are particularly relevant in evaluations of the oilfields systems, due to directs relations between porosity and electrical resistivity, which allow inferences about oil and gas production. The indirect estimative of the productions in free aquifers system is something complex before of the diverse variables responsible for factors or physical phenomena, as clays minerals, which conditioned the physical parameters by electric geophysical methods. This paper present analyzed correlation among electrical resistivity, chargeability and direct measure flow in shallow wells, for determination of statistical relationships between parameters and evaluation of the geological constraints evolved. The study count with the 23 shallow wells located in free aquifer, constituted by alteration materials of the granites localized in Caçapava do Sul (RS). The geophysical data are acquired by vertical electric sounding in Schlumberger array. The correlations between electrical resistivity and flow, chargeability and flow, thickness of the soil/saprolite and flow indicated relationships between physical and hydrogeologic parameters, with variations conditioned by factors as porosity, permeability, besides intrinsic geological heterogeneities such soil variable thickness and rock fragments with several alteration degrees.

Eficiência do uso da água e parâmetros nutricionais na cultura da rúcula submetida a diferentes condições de estresse hídrico

Pós-graduação em Agronomia (Irrigação e Drenagem) - FCA

Agrupamentos de amostras circulares em função das unidades de solo

The objective of the study was to analyze the features of the relief through the variables: maximum altitude (HM); mean altitude (Hmd); minimum altitude (Hm); altitude range (H); average slope length (CVm); minimum length of run-off (Cd) and average steepness of circular samples (I) of the Capivara River Watershed – Botucatu (SP). A total of 4 circular samples were obtained per unit of soil (Quartzipsamment alfisol oxisol - RQ, Udox - LVA and Udorthent - RL). Multivariable analysis and aerial color photographs of 2000, Brazilian Chart and Soil Chart of Botucatu city-SP were used for data analyses. Soil differentiation was performed using the Student-t Test for analyzes of orthogonal contrasts among means of the three soils and analysis of groupings and major components. The grouping analysis of the variables of relief differentiated 75% of LVA and 100% of RL and RQ soil circular samples. The most efficient parameters of relief for differentiation of soils according to their order of importance were as follows: HM, Hm, Hmd and H.

Aplicação de doses de vinhaça sob desenvolvimento vegetativo de pastagem degradada e propriedades físicas do solo

The experiment was conducted in the experimental field of the University of GoiásUEG, UNU Ipameri - GO with the objective of evaluating the effect of different doses of vinasse on the vegetative development of degraded pasture and soil physical properties in two seasons. The pasture used in the experiment was in a state of degradation, and had eight years of formation. The experimental design was randomized blocks consisted of eight treatments and four blocks, totaling 32 experimental units. We evaluated the following soil physical properties: density the soil, particle density, total porosity, infiltration velocity, soil water. We also evaluated the following parameters of vegetative development of grassland: green and dry mass of shoots, effective depth of the root system, the grass height. The results were submitted to analysis of variance at 5% significance level and after we performed regression testing. The vinasse promoted significant effect on all parameters related to vegetative development of both grazing during the rainy season as in the dry. In this case, a model that best fit the dataset vegetative pasture was quadratic. It appeared that the vinasse different doses did not cause changes in the physical properties of the soil.

Remoção de elementos potencialmente tóxicos em resíduo sólido da indústria canavieira para utilização como condicionador de solo na agricultura

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Efeito de dois diferentes programas de intervenção sobre parâmetros cinemáticos da marcha e testes de mobilidade em pacientes com doença de parkinson

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Emissão de CO2 do solo em áreas de restauração na Mata Atlântica

Pós-graduação em Geociências e Meio Ambiente - IGCE

Previsão da capacidade de carga de estacas escavadas em solo arenoso da região de Araquari-SC

In Geotechnical engineering the foundation projects depend on the bearing capacity and the acceptable displacements. One of the possible ways to predict the bearing capacity of foundations is through semi-empirical statistical methods which correlate in-situ tests (SPT and CPT). The piles breaking loads are defined by the interpretation of the load x head displacement curve and the experimental data acquired through the load test. In this work it is studied the behavior of bored piles executed in the Araquari/SC region, comparing the bearing capacity values predicted by the methods DECOURT & QUARESMA MODIFICADO (1996), AOKI & VELLOSO MODIFICADO MONTEIRO (2000), MILITITISKY E ALVES (1985), DECOURT & QUARESMA (1978), MÉTODO DE AOKI & VELLOSO (1975) e PHILOPANNAT (1986), with the results of the load test, evaluating their differences and discussing parameters that have direct effects on the prediction