Aquaponics production of white radish microgreens (Raphanus sativus var. Daikon) as an option for Tilapia Resource-limited aquaculture farmers

Objetive: to evaluate the production of white radish shoots (Raphanus sativus var. Daikon) in on-demand coupled aquaponics systems without climate control. Design/ Methodology/ Approach: three treatments with three replicates each were established production of white radish microgreens with no substrate. In treatment H, a 50% commercial hydroponic solution was used, in treatment D distilled water was used, and in treatment T we used water derived from the tilapia culture. Results: the production of radish microgreens in semi-open systems without climatic control was similar in the treatments with water derived from tilapia culture and the 50% hydroponic solution. Limitations/ Implications of the study: it is necessary to test this type of shoots culture with a greater number of species and under different conditions, as well as testing restrictions or sanitary remediation. The production obtained presented significant biological contamination issues, so radish microgreens were not suitable for human consumption. Findings/ Conclusions: it was possible to use the water from a tilapia farm in aquaponics systems coupled on-demand for the hydroponic production of white radish microgreens. However, there was no difference between aquaponics and the production obtained with hydroponic fertilizers.