Efficiency tests for screening production strategies in a lettuce-juvenile tilapia aquaponics system in Brazil

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorEmpresa Brasileira de Pesquisa Agropecuária (EMBRAPA)-
Autor(es): dc.contributorPurdue University-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorNext-Generation Horticultural Systems-
Autor(es): dc.creatorFlores, Roberto Manolio Valladão-
Autor(es): dc.creatorPreckel, Paul V.-
Autor(es): dc.creatorQuagrainie, Kwamena-
Autor(es): dc.creatorWidmar, Nicole Olynk-
Autor(es): dc.creatorSilva, Laura-
Autor(es): dc.creatorda Costa, Jesaias Ismael-
Autor(es): dc.creatorPinho, Sara M.-
Autor(es): dc.creatorPortella, Maria Célia-
Autor(es): dc.creatorBranco, Thais Castelo-
Autor(es): dc.creatorFilho, Manoel Xavier Pedroza-
Data de aceite: dc.date.accessioned2025-08-21T21:22:44Z-
Data de disponibilização: dc.date.available2025-08-21T21:22:44Z-
Data de envio: dc.date.issued2023-03-01-
Data de envio: dc.date.issued2023-03-01-
Data de envio: dc.date.issued2021-12-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1007/s10499-022-00912-9-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/241130-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/241130-
Descrição: dc.descriptionThis article assesses strategies for managing the economic returns to an aquaponics production system with joint products of lettuce and tilapia. Experimental data from Brazil that varied fish stocking density and the fish feeding rate are analyzed using nonparametric efficiency testing methods to identify potentially profitable technologies and their sensitivities to prices of inputs and outputs. Plants and fish production are symbiotic in an aquaponics system, with fish waste providing nutrients for plant growth and plants helping maintain water quality for the fish via filtration. The optimal input/output mix among alternatives is identified, and sensitivity analysis is used to assess the price ranges around recent market conditions (0.18 R$/tilapia fingerling, 2.8 R$/kg for fish feed, 20 R$/kg for juvenile fish, and 1.57 R$/kg for lettuce) over which that technology choice remains optimal. The configuration of production controls is robust to price changes. Results show that at low fish stocking densities (100 fish/m3), the effluent in the water provides insufficient nutrients to plants. In addition, early lettuce harvests (before 26 days) are generally less efficient than treatments that allow more time for plant growth. Sensitivity analysis indicates that the optimality of the identified configuration of production controls is robust with respect to input and output prices.-
Descrição: dc.descriptionEmbrapa Fisheries and Aquaculture Embrapa, Prolongamento da Avenida NS 10, cruzamento com a Avenida LO 18, sentido Norte, loteamento Água Fria, TO-
Descrição: dc.descriptionDepartment of Agricultural Economics Purdue University, 403 W. State St.-
Descrição: dc.descriptionAquaculture Center of Unesp (Caunesp) São Paulo State University, Via de Acesso Professor Paulo Donato Castellane, s/n—Vila Industrial, SP-
Descrição: dc.descriptionLeibniz-Institute of Vegetable and Ornamental Crops (IGZ) Next-Generation Horticultural Systems-
Descrição: dc.descriptionAquaculture Center of Unesp (Caunesp) São Paulo State University, Via de Acesso Professor Paulo Donato Castellane, s/n—Vila Industrial, SP-
Idioma: dc.languageen-
Relação: dc.relationAquaculture International-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectAquaponics-
Palavras-chave: dc.subjectFeeding rate-
Palavras-chave: dc.subjectNonparametric efficiency analysis-
Palavras-chave: dc.subjectStocking density-
Palavras-chave: dc.subjectTilapia and lettuce production-
Título: dc.titleEfficiency tests for screening production strategies in a lettuce-juvenile tilapia aquaponics system in Brazil-
Tipo de arquivo: dc.typelivro digital-
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