Effects of struvite recovered from wastes in crop cultivation
2020
Oliveira, Verónica | Monteiro, M.C.H. | Rocha, J.L. | Ferreira, Célia D.
5th International Conference Wastes : Solutions, Treatments and Opportunities, Costa da Caparica, Lisboa, 4-6 setembro de 2019.
Show more [+] Less [-]Struvite recovered from wastes has been considered a promising second generation fertiliser. Themain objective of this work is to evaluate the effecls of struvite fertilisation on i) ryc (Secale cereale L.) cultivation (through a 45-d pot experiment), in terms of macronutrients, micronulrients and heavy metals and ii) on soil fertility (through a 30-d incubation experiment) in terms of available phosphorus and exchangeable bases (Ca2+, Mg2+ and K+). Struvite-fertilisation increased the soil available phosphorus resulting in improvement of the soil fertility class from low to medium class. In terms of exchangeable bases, the soil fertility class did not change. Furthermore, the struvite-fertilisation led to the highest concentration of total phosphorus in the plant. No relevant effects were found regarding the concentralions of Ca, Mg and K in the plant as well as the micronutrients. The leveis of heavy metals on crop did not increase after soiIs fertlisation with struvite.
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