Cited by 60Phosphorus and nutrient managementAgricultural Science and FertilizationAgriculture, Plant Science, Crop Management

Algal biomass from wastewater: soil phosphorus bioavailability and plants productivity

Castro, Jackeline de Siqueira, Calijuri, Maria Lúcia, Mattiello, Edson Marcio, Ribeiro, Vinícius José, Assemany, Paula Peixoto·2020·Science of The Total Environment

Abstract

The cultivation of microalgae in wastewater allows to obtain a biomass concentrated in nutrients and organic material. This biomass added to phosphate fertilizers can promote a slow release of the nutrient and consequently a higher absorption of phosphorus (P). The objective of this study was to investigate P uptake by plants subjected to triple superphosphate (TSP) fertilization, added with microalgae biomass (MB) grown in wastewater. TSP was added with different MB proportions in order to verify if there would be a different behaviour in P release for millet (Pennisetum glaucum L.) plants. With the proportion that maximized P accumulation in plants, a second experiment was carried out to investigate whether MB exerts influence of P diffusion in the soil. Finally, a third trial was conducted in a greenhouse, where TSP and TSP + 12% MB were applied to the soil under different phosphorus doses in corn (Zea mays L.). The proportion of MB in TSP that maximized the increase of P content and concentration in plants was approximately 12% MB. From this proportion, a reduction in the values of the variables analysed in the plant with the increase of the proportion of MB in the biofertilizer was observed. Similar behaviour was observed when evaluating P diffusion in sandy and clay soils. Fertilizers TSP and TSP + 12% MB showed no difference in P diffusion in the soil, while the ratio of 30% MB clearly impaired P diffusion. In a greenhouse, the P content presented significant difference for the tests carried out with TSP and TSP + 12% MB fertilizer, in which the latter provided higher P recovery rate by plants. Therefore, MB added to TSP had a positive influence on plant development and its P recovery capacity when applied in a proportion of 12% MB to the fertilizer mass.

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Crossref · 10.1016/j.scitotenv.2019.135088

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Authors
Castro, J. D. S., Calijuri, M. L., Mattiello, E. M., Ribeiro, V. J., & Assemany, P. P.
Affiliations
  • Universidade Federal de Viçosa (BR)
  • Universidade Federal de Lavras (BR)
Corresponding author
Castro, Jackeline de Siqueira
Venue
Science of The Total Environment
Publisher
Elsevier BV
Published
2020-04
Volume
711
Pages
135088
ISSN
0048-9697 (ISSN-L)
OpenAlex
W2990645959
Cited by
60
References
27
Citations by year
2026: 2 · 2025: 11 · 2024: 10 · 2023: 8 · 2022: 12 · 2021: 12 · 2020: 5
FWCI
5.55
Type
journal article
Language
en
Open access
closed
Locations
  • The Science of The Total Environment (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Conselho Nacional de Desenvolvimento Científico e Tecnológico (405230/2015-0)
  • Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
Topics
  • Physical Sciences › Environmental Science › Waste Management and Disposal › Phosphorus and nutrient management
  • Life Sciences › Agricultural and Biological Sciences › Soil Science › Agricultural Science and Fertilization
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Agriculture, Plant Science, Crop Management
Keywords
microalgal biomass, soil phosphorus bioavailability, phosphorus fertilizer, triple superphosphate, biofertilizers, plant phosphorus uptake, millet, maize, plant productivity
MeSH terms
Biological Availability, Fertilizers, Phosphorus, Soil, Biomass, Wastewater

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