Evaluation of Phosphorus Level in Green Lettuce Conventional Grown under Natural Conditions and Aquaponic System

Aquaculture has been on the frontline of public concerns regarding sustainability. Sustainable farming is the farming of the new millennium. Aquaponics is essentially the combination of aquaculture and hydroponics, and it fits very well in the therm „sustainable production technolgy” The aim of this study was to assess the quality of lettuce (Lactuca sativa) production obtained in an integrated aquaponic system with recirculating aquaculture system of pikeperch growing. : The fish was raised in recirculating system. The plants was cultivated in the aquaponic module. Fish species used was represented by pikeperch (Sander lucioperca). Biological plant material used in the experiments was represented by lettuce, Lactuca sativa, variety White Boston. Chemical analyses concerning phosphorus level in plants were carried out over a number of 5 plants in Repetition 1, 5 plants in Repetition 2 and 5 plants in Control Version. Phosphorus was determined in the form of phosphorus pentoxide (P2O5). Determination of phosphorus it was made by dosage in 2% acetic acid from plant material. Colorimetric Determination of P. The differences between P2O5 levels from the salad aquaponically produced and P2O5 levels in salad conventionally produced in natural conditions are statistically significant (p