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Evaluation of the fertilizer potential of Chlorella vulgaris and Scenedesmus obliquus grown in agricultural drainage water from maize fields.
Alvarenga, Paula; Martins, Marta; Ribeiro, Henrique; Mota, Mariana; Guerra, Inês; Cardoso, Helena; Silva, Joana Laranjeira.
Afiliación
  • Alvarenga P; LEAF - Linking Landscape, Environment, Agriculture and Food Research Center, Associated Laboratory TERRA, Instituto Superior de Agronomia, University of Lisbon, Tapada da Ajuda, 1349-017 Lisbon, Portugal. Electronic address: palvarenga@isa.ulisboa.pt.
  • Martins M; LEAF - Linking Landscape, Environment, Agriculture and Food Research Center, Associated Laboratory TERRA, Instituto Superior de Agronomia, University of Lisbon, Tapada da Ajuda, 1349-017 Lisbon, Portugal.
  • Ribeiro H; LEAF - Linking Landscape, Environment, Agriculture and Food Research Center, Associated Laboratory TERRA, Instituto Superior de Agronomia, University of Lisbon, Tapada da Ajuda, 1349-017 Lisbon, Portugal.
  • Mota M; LEAF - Linking Landscape, Environment, Agriculture and Food Research Center, Associated Laboratory TERRA, Instituto Superior de Agronomia, University of Lisbon, Tapada da Ajuda, 1349-017 Lisbon, Portugal.
  • Guerra I; ALLMICROALGAE - Natural Products, SA, 2445-413 Pataias, Portugal(1).
  • Cardoso H; ALLMICROALGAE - Natural Products, SA, 2445-413 Pataias, Portugal(1).
  • Silva JL; ALLMICROALGAE - Natural Products, SA, 2445-413 Pataias, Portugal(1).
Sci Total Environ ; 861: 160670, 2023 Feb 25.
Article en En | MEDLINE | ID: mdl-36473664
Producing microalgae with agricultural drainage water (ADW) allows recycling water and nutrients, with the production of a biofertilizer, avoiding receiving waters' contamination. Chlorella vulgaris and Scenedesmus obliquus were cultivated using ADW and standard media supplementation and presented higher productivities, relatively to the control industrial growth medium (using freshwater). Selected strains were grown outdoors in pilot flat panel photobioreactors, reaching 2.20 g L-1 for S. obliquus and 1.15 g L-1 for C. vulgaris, and degrading herbicides in the ADW to non-quantifiable concentrations. The potential of the C. vulgaris and S. obliquus suspensions to replace 50% of nitrogen (N) mineral fertilization of lettuce (0.5 g pot-1) was evaluated through a pot trial, also using a 2-times (1.0 g pot-1) and 5-times (2.5 g pot-1) higher dose, applied 31 days before lettuce transplanting. Even the lower dose of N, applied via C. vulgaris or S. obliquus suspensions, was able to provide significantly higher lettuce fresh matter yield, relatively to the mineral fertilized control. Soil enzymatic activities were improved, with significantly higher dehydrogenase, ß-glucosidase, and acid phosphatase activities for the 2.5 g pot-1 dose, more marked for S. obliquus, which was also able to increase soil organic matter content. Both the non-fertilized control and microalgae fertilized pots led to similar soil electrical conductivities, 3-fold lower than in the N-mineral fertilized pots, evidencing the capacity of microalgae fertilizers to avoid soil secondary salinization. Results suggest benefits from using ADW from maize cultivation to produce C. vulgaris or S. obliquus suspensions, that can be further used as liquid organic slow-release fertilizer.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Scenedesmus / Chlorella vulgaris / Fertilizantes Idioma: En Revista: Sci Total Environ Año: 2023 Tipo del documento: Article Pais de publicación: Países Bajos
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Scenedesmus / Chlorella vulgaris / Fertilizantes Idioma: En Revista: Sci Total Environ Año: 2023 Tipo del documento: Article Pais de publicación: Países Bajos