The use of recovered struvite and ammonium nitrate in fertigation in a horticultural rotation: agronomic and microbiological assessment
Visualitza/Obre
Data de publicació
2022-12-12ISSN
0959-3330
Resum
Phosphorus and nitrogen recovery from wastewater as struvite and ammonium nitrate (AN) may be viable alternative fertilizers to boost circularity in horticulture. A 2-year fertigated crop rotation in soil under greenhouse conditions was evaluated to determine the efficiency of both recovered products as raw materials for a nutrient solution (NS) manufacture. The effects of these treatments versus synthetic fertilizers were compared in terms of crop performance, plant nutrient uptake, soil chemistry and microbiota. This is the first study to implement struvite through fertigation as the sole source of P in soil crops. Results showed that both recovered products can be used as fertilizers in NS, due to the similar response to the control for different parameters and crops (tomato, lettuce, and cauliflower). However, the AN treatment showed lower yield in the first tomato crop, which results may depend on the cultivar ammonium tolerance. Besides, the concentration of heavy metals in fruits/leaves was below the permissible limits. Total and Olsen phosphorus soil analysis revealed no differences among treatments, resulting in a similar performance of P-struvite to commercial phosphate. Bulk soil bacteria structure, richness and relative dominance were increased over time, while archaea only showed lower evenness, both despite the fertilization strategy. Shannon diversity was not significantly affected. A predominance of ammonia-oxidizing bacteria (AOB) versus archaea (AOA) was observed, while nitrite-oxidizing bacteria (NOB), dominated by Nitrospira, increased with fertigation. Our results demonstrate that fertilizer blends for NS containing recovered nutrients are a feasible alternative to synthetic fertilizers.
Tipus de document
Article
Versió del document
Versió acceptada
Llengua
English
Matèries (CDU)
632 - Malalties i protecció de les plantes
Pàgines
27
Publicat per
Taylor & Francis
Publicat a
Environmental Technology
Citació
Carreras-Sempere, Mar, Carmen Biel, Marc Viñas, Miriam Guivernau, and Rafaela Caceres. 2022. "The Use Of Recovered Struvite And Ammonium Nitrate In Fertigation In A Horticultural Rotation: Agronomic And Microbiological Assessment". 2022. Environmental Technology. https://www.tandfonline.com/doi/full/10.1080/09593330.2022.2154172.
Número de l'acord de la subvenció
EC/LIFE/LIFE16 ENV-ES-000375/EU/Enhanced nitrogen and phosphorous recovery from wastewater and integration in the value chain/LIFE-ENRICH
Programa
Sostenibilitat en Biosistemes
Protecció Vegetal Sostenible
Aquest element apareix en la col·lecció o col·leccions següent(s)
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