Influência do manejo de residuos vegetais na umidade do solo e na produtividade do feijoeiro irrigado por pivô central

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

Utilização da modelagem sistêmica para analisar o efeito da variação climática no parâmetro produtividade da água na laranja Natal (Citrus sinensis L. Osbeck) no Estado de São Paulo

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

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

Pós-graduação em Geociências e Meio Ambiente - IGCE

Purificação, imobilização e caracterização bioquímica de lipase produzida por Penicillium sect. Gracilenta CBMAI 1583 em cultivo submerso

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Análise da interface adesiva entre pinos de fibra de vidro e dentina intrarradicular submetida à irrigação com diferentes agentes condicionantes

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

Avaliação do processo de contaminação e remediação de água subterrânea por hidrocarbonetos

Pós-graduação em Engenharia Civil e Ambiental - FEB

Simulação de modelagem qualitativa para avaliação preliminar da qualidade da água na Bacia do Ribeirão das Perdizes em Campos do Jordão/SP, como subsídio ao enquadramento

The purpose of this research was to present the principles for the implementation of a future water body classification program at the UGRHI-1 (Management Unit of Water Resources-1/São Paulo, Brazil) using qualitative and quantitative water modeling. Our study area was in Campos do Jordão, a city in the state of São Paulo, specifically in the Perdizes river watershed, which is included in the UGRHI-1. The water quality assessment used a modeling mehtodology that can support a future study for the classification of water bodies in the region. The behavior of DO and BOD parameters was assessed in the water quality scenarios, considering the variations of flows, loads, reductions in withdrawals and different efficiencies in sewage treatment. The model used was QUAL2E developed by USEPA (United States Environmental Protection Agency) that received a new graphic interface named QUAL2R model. The reference flows Q7,10, Q95% and Qm used were obtained through the DAEE (Department of Water and Electric Energy) hydrologic regionalization method. It was noted that of the 9 proposed scenarios, only scenario 6 that was predicted in the flow regime Qm with the existence of a treatment system capable of removing 93% of the BOD, in the Perdizes River remained 67.5% of the time in class 2. Scenario 8 predicted a 50% reduction in In scenario 8 a reduction of 50% in the flow captured in CA-04, associated with the efficiency of 93% of BOD removal keeping the river in class 2. In scenario 9 the minimum required efficiency in sewage treatment in the flow regime Q95% for keeping the river in class 2 was also calculated and the value of 94.7% was obtained.

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

Influência de pressões de trabalho, espaçamentos e altura de instalação na distribuição de água de aspersor autocompensante

Pós-graduação em Agronomia (Ciência do Solo) - FCAV

Avaliação da erosão hídrica por meio da Equação Universal de Perda de Solo Modificada (MEUPS) na bacia hidrográfica do Ribeirão Jacutinga, Rio Claro (SP)

Water erosion is one of the main processes responsible for soil degradation, resulting in loss of parcels of land suitable for agriculture, to the loss of agricultural inputs and the resulting drift of pesticides and excess sediment to rivers, causing phenomena such as the siltation and eutrophication of water bodies. Such a scenario makes it necessary to perform work of a technical and scientific to provide subsidies to land-use planning, in order to protect natural resources biotic and abiotic. To develop this work is necessary to find a unit of analysis capable of integrating the different elements of the landscape, hydrosphere, atmosphere, biosphere and lithosphere. Therefore we adopt for this work the watershed as main unit studies. From this question, this project will focus on the assessment of surface water erosion through MEUPS (Equation Modified Universal Soil Loss) predictive model. With the aid of maps, remote sensing products, and the use of geotechnology, this study aims to evaluate for the for Natural Erosion Potential the basin of the Jacutinga river, located in Rio Claro - SP

Análise morfométrica e definição do potencial de uso do solo da microbacia do rio Veríssimo, Veríssimo - MG

The morphometric study in watersheds is a key part to managing watersheds, because from the morphometric indices can determine the risks and potential of each watershed and assess environmental impacts on them generated mainly by human activities. This study aimed to characterize the watershed of the river Verissimo, located in the municipality of Verissimo - MG, analyze morphometric indices and propose how best to use the soil to minimize erosion impacts to resources hídricos.Foi used digital charts 1:100,000 scale and AutoCAD software for the quantification of vector data. The watershed has an area of 146.055 km2 , 55.902 km perimeter. According to the morphometric indices is considered 5th order, highly branched, slightly elongated format of little risk to floods occur, its main channel corresponds to 28.541 kilometers and has undulated, with an average slope of 8.59%. Through the results of morphometric indices and roughness coefficient, shows the potential of watershed land use on pastures for livestock, and soil conservation practices and water to minimize the impacts of erosion and contamination of water resources.

Efeito de dois sistemas de manejo do solo nas propriedades físico-hídricas, desenvolvimento radicular e produtividade do milho

Corn cultivation is part of crop rotation used by irrigation farmers from the southwestern region of São Paulo state, Brazil, who use no-tillage soil management as a kind of sustainable use of soil. The effect of this conservative practice on physical and hydrical properties of the soil, root development and corn crop yield compared to the conventional management was the objective of this work. The experiment was held at the Buriti-Mirim Farm, Angatuba, SP, Brazil, using an irrigated area with a center pivot system and two types of soil management: conventional and no-tillage systems. Although the no-tillage management had higher soil density and less water availability, no significant difference was found for both management systems concerning soil resistance to penetration, root development and crop yield. In both systems of soil management, 90% of roots were concentrated in the first 0-20cm of soil layer.

Produção da cultura da beterraba irrigada com água salina.,

The use of low quality water for agriculture should be performed with care to avoiding excessive accumulation of salts in the soil so not to harm crop development. In order to evaluate the performance of beets under the infl uence of low water quality, an experiment was conducted in a greenhouse of the Department of Agricultural Engineering, Universidade Estadual Paulista in Botucatu, Brazil, from April to July 2012. We used the beet (Beta vulgaris L.) in a completely randomized design with 6 treatments and 5 replications, totaling 30 plots. Treatments consisted of NaCl solutions at different concentrations (2.0, 3.0, 4.0, 5.0 and 6.0 dS m-1) plus a control treatment corresponding to water with no additional salt and electrical conductivity of roughly 0.26 dS m-1. Variables evaluated were total production, commercial production, plant height, number of plants and root diameter. Production of the beet crop was affected by the increasing salinity of irrigation water, characterized by reduced root production of the beets. Total and commercial production showed reductions of 8.82 and 12.2% in accordance with the unit increase of salinity.

Influência dos espaçamentos de plantio da cultura de cana-de-açúcar (Saccharum spp) nos atributos físico-hídricos do solo

The evolution of sugar cane mechanized harvesting made the sector to question the current row spacing used due to its influence on soil compaction. The aim of this study was to evaluate the soil hydro-physical attributes in two row spacings after the farm machinery traffic. The treatments were conducted in a randomized block design with twelve repetitions, being subjected to the variance analyze in double factorial arrangement. The bulk density, the gravimetric water content, and the soil cone index along the position of crop lines (LC) and 0,1m from the row (LP) at the range of depth of 0 to 0.2m and 0.2 to 0.4m were assessed in both row spacings after the fourth harvest season. The results showed that the row spacings of 1.4 and 1.5m did not affect the values of bulk density and gravimetric water content of the soil in all ranges of depth and sample positions studied. However, in the depth range of 0.2 to 0.4 m, the values of soil cone index (IC) in the row spacing of 1.5 m were higher than the values in row spacing of 1.4 m, at both sampling positions. Regardless of row spacing and sample position, the values of soil cone index in the depth range of 0.2 to 0.4m were higher than the depth range of 0 to 0.2m.

Geoprocessamento aplicado na influencia do uso e ocupação do solo na temperatura aparente da superfície do município de Botucatu (SP)

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)