Management of sludge from fish ponds at the edge of the Itaparica Reservoir (Brazil): an alternative to improve agricultural production

Silva, Jorge Luiz Araújo da; Araújo, Maria do Socorro Bezerra de; Sampaio, Everardo Valadares de Sá Barretto; Ludke, Jorge Vítor; Primo, Dário Costa

doi:10.1007/s10113-017-1181-x

Cited by 9 publications

(4 citation statements)

References 19 publications

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“…Em um experimento de cultivo intensivo de peixes, realizado por Silva et al (2018) no reservatório de Itaparica -Bahia -Brasil, utilizando o lodo oriundo de viveiros de alevinos, verificou-se uma melhora nas características físicas do substrato, reduzindo a densidade e aumentando a capacidade de retenção de água, indicando o grande potencial do lodo para a agricultura.…”

Section: Tratamentosunclassified

Uso do lodo proveniente dos viveiros de cultivos de peixes na produção de mudas de Pitanga (Eugenia Uniflora l.)

Alves

Firmo

Melo

et al. 2022

RICA

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O objetivo deste trabalho foi avaliar o uso do lodo proveniente de viveiros de cultivo de peixes na produção de mudas de pitanga, Eugenia uniflora L., através da Interação Agricultura - Aquicultura (IAA), como uma forma de mitigar o impacto ambiental causado pela piscicultura. Para a avaliação da composição do lodo, foram coletadas amostras de um viveiro de produção de peixes e analisadas as variáveis físico-químicas, matéria orgânica, umidade, relação carbono/nitrogênio e macronutrientes. O lodo foi aplicado no solo, em diferentes proporções, para verificação do crescimento das mudas em casa de vegetação. O desenho experimental foi inteiramente casualizado, com quatro blocos, cada bloco contendo cinco tratamentos e quatro repetições. A fase de experimentação foi encerrada após 80 dias de cultivo, quando as mudas atingiram uma altura em torno de 20 cm. Posteriormente foram medidas o comprimento total, o diâmetro do colmo e a quantidade de folhas de cada muda. O estudo mostrou que na medida em que se aumentou os níveis de lodo do viveiro de peixe, houve um incremento no desenvolvimento das mudas. O tratamento com 100% de inclusão de lodo obteve o melhor rendimento, com os seguintes resultados: 28,03 cm de média do comprimento total, 1,81 mm de média do diâmetro do colmo e 18,18 a média do número de folhas. A matéria orgânica e os macronutrientes encontrados no lodo dos viveiros podem ser disponibilizados para as plantas como condicionador de solo, economicamente viável, proporcionando ganhos de produtividade. A pesquisa forneceu subsídios para a utilização dos resíduos do lodo do fundo dos viveiros na produção de mudas. Para o desenvolvimento de uma piscicultura sustentável, é fundamental que haja um aproveitamento dos resíduos gerados pelos viveiros na agricultura, possibilitando a sua mitigação e o destino correto do resíduo.

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Section: Tratamentosunclassified

Uso do lodo proveniente dos viveiros de cultivos de peixes na produção de mudas de Pitanga (Eugenia Uniflora l.)

Alves

Firmo

Melo

et al. 2022

RICA

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“…(2) Regional economic theory Regional economy refers to the production complex formed by the interaction and interaction of internal and external factors in the regional economy. The regional economic development model is a comprehensive analysis of the internal and external factors and characteristics, development stages and internal operating mechanisms of economic development in specific regions and specific historical conditions [10][11]. Regional economic theory is a theory that studies how to optimize the allocation of production resources in a specific space (specific area) in order to maximize economic benefits.…”

Section: The Planting Structure Of Citrusmentioning

confidence: 99%

Coupling Relationship between the Changes of Citrus Planting Structure and the Development of Regional Agricultural Economy in South China

2021

AJAS

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The purpose of this article is to explore the coupling relationship between the change of planting structure of the citrus industry and the development of regional agricultural economy under the research of the continuous development of planting technology and industrial form, update the concepts and concepts, and promote the continuous development of the citrus industry chain with a cluster development model. Rich and perfect. This article will use specific research methods to analyze specific problems, compare data and draw conclusions. Through theoretical innovation, farewell to the extensive planting model, combined with regional economic characteristics, cultivate new planting methods. The results of the study show that the output of citrus in 2018 increased by 13.76 million tons from 2012, from 26.45 million tons in 2012 to 40.21 million tons in 2018. Among the many fruit productions, it is still relatively large. Therefore, according to the analysis of different planting structures, the model is used to determine the impact of the impact of crop yield changes on the crop planting structure, crop industry, other industries, and even the economic society, providing valuable experience for the research and application of citrus cultivation and regional agricultural economy.

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“…The plant BCF represents the efficiency of a plant at accumulating a metal from the surrounding environment in its tissues. It is calculated via (Casas 2005) where C o is the concentration of the trace element in the plant (mg/kg) and C e is the environmental concentration (i.e., the concentration in the soil, in mg/kg).…”

Section: Bioconcentration Factor (Bcf)mentioning

confidence: 99%

“…The accumulation of metals in agricultural soils is a growing concern because of food safety issues and potential health risks, as well as their adverse effects on soil ecosystems (Schlundt et al 2020). Metals are toxic to terrestrial (Wadgaonkar et al 2018) and aquatic (da Silva et al 2018) life. Due to the persistence, concentration, and diffusion of metals in biological systems, considerable research has been directed into developing the most appropriate technologies for treating metal-contaminated soils (Connell 2018).…”

Section: Introductionmentioning

confidence: 99%

Health risk assessment of heavy metals (Cu, Zn, and Mn) in wild oat grown in soils amended with sediment dredged from the Joumine Dam in Bizerte, Tunisia

Chabchoubi

Mtibaa

Ksibi

et al. 2020

Euro-Mediterr J Environ Integr

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The Joumine Dam located in northern Tunisia has lost more than 20% of its initial storage capacity due to sedimentation, meaning that sediment management is necessary. The sediments at the reservoir bottom act as a sink for nutrients and chemicals originating from the upper agricultural lands and take the form of suspended particles. We proposed that the dredged sediments could be used to amend arid to semiarid soils, as this would partially cover the financial burden of dredging works and reduce the volume of these deposits. However, to check the feasibility of using the sediments as a fertilizer, it was necessary to assess the potential health risks from contaminants in the sediments. Therefore, the present study aimed to evaluate the human health risk (i.e., the hazard quotient, HQ) from heavy metals consumed due to the ingestion of Bromus ramosus (wild oat) grown in soil amended with the Joumine Dam sediments. Plant growth was monitored in macrocosm (amendment rate of 1.17%) and microcosm (amendment rate ≤ 10%) bioassays to elucidate the metal concentrations in roots, stems, leaves, and seeds. Zn, Cu, and Mn concentrations were analyzed in the plants grown in the macrocosm experiments, while the follow-up was only performed for Zn in the plants grown in the microcosm experiments. The human exposure to soil pollutants (HESP) evaluation model was adopted to evaluate the health risk (HQ) to humans through direct and indirect oral exposure to heavy metals in wild oat. At the macrocosm scale, Cu was found to be the main source of risk (HQ = 1.86) to children. At the microcosm scale, utilization of the sediment reduced the mobility and bioavailability of copper in the soil, thus decreasing the potential health risk from this metal. Graphic abstract

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Management of sludge from fish ponds at the edge of the Itaparica Reservoir (Brazil): an alternative to improve agricultural production

Cited by 9 publications

References 19 publications

Uso do lodo proveniente dos viveiros de cultivos de peixes na produção de mudas de Pitanga (Eugenia Uniflora l.)

Uso do lodo proveniente dos viveiros de cultivos de peixes na produção de mudas de Pitanga (Eugenia Uniflora l.)

Coupling Relationship between the Changes of Citrus Planting Structure and the Development of Regional Agricultural Economy in South China

Health risk assessment of heavy metals (Cu, Zn, and Mn) in wild oat grown in soils amended with sediment dredged from the Joumine Dam in Bizerte, Tunisia

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