La estruvita como fuente de fósforo reciclado; Efectos sobre el desarrollo del girasol (Helianthus Annuus) y guisante (Pisum Sativum)
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2018-02-23
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Jaén: Universidad de Jaén
Resumen
[ES] El fósforo es un macroelemento esencial para el desarrollo de las plantas y por tanto, uno de los principales elementos que se añaden a los cultivos. Es un recurso finito y debido a la continua demanda de alimentos, las fuentes de roca fosfatada se están agotando.
La necesidad de evitar esta situación plantea estrategias de gestión encaminadas a reducir las pérdidas y residuos generados y potenciar el reciclado de fósforo. La estruvita, precipitado obtenido en aguas residuales, es una de las estrategias para el reciclado.
Este estudio pretende evaluar los efectos de concentraciones crecientes de estruvita sobre la producción de biomasa aérea y radicular de plantas modelo de rápido crecimiento (girasol y guisante), en comparación con el superfosfato; principal fuente de fósforo en agricultura.
Los resultados demuestran que la estruvita tiene un comportamiento similar al superfosfato. Por tanto, es una alternativa más sostenible al uso de fertilizantes fosfatados convencionales.
[EN] Phosphorus (P) is an essential macro-element for plants development. lt is one of the main elements added to crops. P is a finite resource and due to the increasing population and P demand, main sources of mineral P are running out. Strategies for an optimal P management, based on an efficient use and P recycling are emerging. The use of struvite, a mineral precipitate recovered from wastewater, is one of the strategies to recycle phosphorus. This study aims to evaluate the effects of increasing concentrations of struvite on the aerial and root biomass production of rapidly developing model plants (sunflower and pea), compared to superphosphate; the most common source of phosphorus in agriculture. The results obtained demonstrate that plants treated with struvite have a similar behavior than superphosphate, and therefore struvite is an adequate and sustainable and recycled source of P which can be an alternative to superphosphate.
[EN] Phosphorus (P) is an essential macro-element for plants development. lt is one of the main elements added to crops. P is a finite resource and due to the increasing population and P demand, main sources of mineral P are running out. Strategies for an optimal P management, based on an efficient use and P recycling are emerging. The use of struvite, a mineral precipitate recovered from wastewater, is one of the strategies to recycle phosphorus. This study aims to evaluate the effects of increasing concentrations of struvite on the aerial and root biomass production of rapidly developing model plants (sunflower and pea), compared to superphosphate; the most common source of phosphorus in agriculture. The results obtained demonstrate that plants treated with struvite have a similar behavior than superphosphate, and therefore struvite is an adequate and sustainable and recycled source of P which can be an alternative to superphosphate.