Development of a new hybrid aquaponic system for increasing chilli production efficiency

Abstract: One of the concerns regarding aquaponic systems operating without conventional soil is the limited selection of plants available for cultivation. For a wider use of aquaponic systems increasing yields are inevitable. The aim of our research, started in 2017, was to eliminate the drawbacks of aquaponic systems using alternative solutions in order to remain in the framework of sustainable agriculture. In order to meet the above challenges, a hybrid, automated aquaponic system was installed in which the soil was not removed completely from the systems that are not completely closed as fish receive fresh water as well keeping in this way hormones impeding growth at a low level. Crucians and African catfish were placed into two tanks of 7 m³. Further novelty of the system is the application of quail dung in a quantity determined specially for increasing the natural efficiency of the system. Three methods of cultivation were used and plant macro- and microelements were measured. Results indicate that the system is suitable for growing different chilli types while quail dung input contributes to increase yield significantly therefore it can be integrated into aquaponic systems excellently.