Suchergebnisse

The use of treated wastewater for irrigation may become an alternative for regions facing water scarcity. This study aimed to evaluate the effects of wastewater reuse in the cultivation of radish (Raphanus sativus L.). The experiment was conducted in the greenhouse of the Department of Agricultural Engineering (DEA), located at the Federal University of Sergipe/Campus of São Cristóvão from August to September 2011. The effluent was collected at the Sewage Treatment Plant (WWTP) Rosa Elze, located in the municipality of São Cristóvão/SE. Irrigation was performed using five different dilutions, and was accomplished using the method of the Food and Agriculture Organization (FAO) 56. The experimental design was a completely randomized design (CRD) with five replications and two plants per useful plot. The study evaluated height, fresh and dry shoot matter, length and fresh weight of root, fruit diameter and number of leaves. The data were subjected to ANOVA and means were compared by the Tukey test at 5 % probability, with no significant difference. Regarding the microbiological quality of the bulb, the results of the enumeration of coliforms, mesophilic aerobic bacteria and the detection of Salmonella demonstrate that the radish is within the standards established by legislation. ; A utilização de água residuária tratada para irrigação pode se tornar uma alternativa para regiões que enfrentam escassez de água. O presente trabalho teve como objetivo avaliar os efeitos do reuso de efluente doméstico na cultura do rabanete (Raphanus sativus L.). O experimento foi realizado em casa de vegetação do Departamento de Engenharia Agronômica (DEA), localizada na Universidade Federal de Sergipe/Campus de São Cristóvão no período de agosto a setembro de 2011. O efluente foi coletado na Estação de Tratamento de Esgotos (ETE) Rosa Elze, localizada no Município de São Cristóvão/SE. As irrigações foram feitas utilizando-se cinco diluições diferentes. A lâmina de irrigação foi obtida pelo método do Food and Agriculture Organization (FAO) 56. O delineamento experimental utilizado foi inteiramente casualizado (IC), com cinco repetições e duas plantas por parcela útil. Foram avaliados altura, massa seca e fresca da parte aérea; comprimento e massa fresca da raiz; diâmetro do fruto e número de folhas. Os dados obtidos foram submetidos à análise de variância e as médias comparadas pelo teste de Tukey ao nível de 5% de probabilidade, não havendo diferença significativa. Em relação à qualidade microbiológica do bulbo, realizou-se a enumeração de coliformes termotolerantes, de bactérias aeróbias mesófilas e a pesquisa de Salmonella, os resultados demonstram que o rabanete encontra-se dentro dos padrões estabelecidos pela legislação. ; A utilização de água residuária tratada para irrigação pode se tornar uma alternativa para regiões que enfrentam escassez de água. O presente trabalho teve como objetivo avaliar os efeitos do reuso de efluente doméstico na cultura do rabanete (Raphanus sativus L.). O experimento foi realizado em casa de vegetação do Departamento de Engenharia Agronômica (DEA), localizada na Universidade Federal de Sergipe/Campus de São Cristóvão no período de agosto a setembro de 2011. O efluente foi coletado na Estação de Tratamento de Esgotos (ETE) Rosa Elze, localizada no Município de São Cristóvão/SE. As irrigações foram feitas utilizando-se cinco diluições diferentes. A lâmina de irrigação foi obtida pelo método do Food and Agriculture Organization (FAO) 56. O delineamento experimental utilizado foi inteiramente casualizado (IC), com cinco repetições e duas plantas por parcela útil. Foram avaliados altura, massa seca e fresca da parte aérea; comprimento e massa fresca da raiz; diâmetro do fruto e número de folhas. Os dados obtidos foram submetidos à análise de variância e as médias comparadas pelo teste de Tukey ao nível de 5% de probabilidade, não havendo diferença significativa. Em relação à qualidade microbiológica do bulbo, realizou-se a enumeração de coliformes termotolerantes, de bactérias aeróbias mesófilas e a pesquisa de Salmonella, os resultados demonstram que o rabanete encontra-se dentro dos padrões estabelecidos pela legislação.

Parallel to the growing demand for multiple uses of water, conflicts between its users appear, contributing to the increase in the number of cases submitted to the Judiciary. This study aimed at analyzing the existence of mediation as a method of resolving possible conflicts related to water resources in the Sergipe River Basin. The qualitative approach research was developed based on a bibliographic survey, by means of consultations with books, pertinent legislation, articles in scientific and non-scientific journals and, documental, through the analysis of the minutes of the meetings of the Sergipe River Basin Committee, its Internal Regulations and the Climatological Report that analyses the rainfall variability by regions in Sergipe, from 2000 to 2017. The results revealed that despite moving towards recognizing mediation as a method for resolving conflicts, the Committee faced several difficulties in carrying out decentralized management of water resources, especially with regard to the resolution of water disputes. Possible solutions to some of the problems faced by the Committee can be pointed out, such as training its members in water resource management and conflict management, in addition to making them aware of participating frequently in Committee meetings and also stimulating the participation of the population in these meetings.

The aim of this work was to evaluate the soil chemical parameters and microbiological quality of biquinho pepper fruits irrigated with treated wastewater and different irrigation depths. The experiment was carried out in protected environment with the application of four irrigation depths corresponding to 50, 75, 100 and 125% of the crop evapotranspiration with three concentrations of 0, 50 and 100% of treated wastewater in the cultivation of biquinho pepper in pots. The experimental design was in randomized blocks in a 3 x 4 factorial scheme, totaling 12 treatments, with three replications. The soil chemical parameters were determined before and after the growing the pepper with treated wastewater. Reference evapotranspiration (ETo) was estimated by the FAO Penman-Monteith method using data obtained from an Automatic Weather Station installed inside the protected environment. The microbiological quality was analyzed by quantifying fecal coliforms and the presence of Salmonella sp. recommended by Brazilian National Agency for Sanitary Surveillance (ANVISA). All pepper samples were in accordance with the limits recommended by the legislation and, therefore, the use of wastewater in pepper irrigation did not represent a risk to public health. The soil chemical parameters were changed in different ways after the application of the treated wastewater, being motivated by both soil and wastewater chemical characteristics.