QUALITY AND NUTRIENT UPTAKE OF KALE (BRASSICA OLERACEA VAR. ACEPHALA) ON AQUAPONIC SYSTEM WITH APPLICATION OF THE RECIRCULATING AQUACULTURE SYSTEM

• Main Author: FAZA AULIA (NIM : 11414021), ALVIN
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/25419
• Institution: Institut Teknologi Bandung

<p align="justify">Kale (Brassica oleracea L. var. acephala) are plants that have a high nutritional content because they are rich in vitamins, minerals, dietary fiber, and many antioxidant compounds. Kale are very attractive to the public because of the high content of phytochemicals that are very good for health. The content of phytochemicals is high in kale because these plants are rich in concentrations of vitamins, minerals, dietary fiber, glucosinolates, and antioxidant compounds including polyphenols and phenolic acids. Directorate General of Horticulture stated that in 2013 and 2014 there was a decrease in crop production of the Brassica group in Indonesia by 3.03%. One of the causes of the decline in the production of Brassica plants due to decreased harvest area of 3.27%. Therefore an innovation is needed for the cultivation of the Brassica group, especially kale in overcoming the decrease in harvested area, namely using an aquaponics system modified by applying the principle of the Recirculating Aquaculture System (RAS). The purpose of this study was to determine the quality of kale plants based on levels of chlorophyll, fiber content, and vitamin C, and determine the macronutrient nutrient uptake of nitrogen and phosphorus in kale with nutrients derived from feed feces and fish. The research was conducted at the Bandung Institute of Technology's Greenhouse, located on Ganesa Campus. This research was conducted by determining the quality and uptake of nutrients from kale whose nutrients were drained directly from fish tanks and kale plants whose nutrients had been through biofilter in one system. The results of the chlorophyll content found that kale plants that received direct nutrition from fish tanks had the highest value of 6.44 mg / L The highest vitamin C content was found in kale plants that received nutrients after going through biofilter having the highest value of 426.84 mg / 100gram. The highest fiber content found in kale plants that get nutrients after going through biofilter has the highest value of 2.13 g / 100gram. The highest uptake of nitrogen and phosphorus found in kale plants that received nutrients after going through biofilter had the highest value of 121.485 g / plant for nitrogen and 91.745 g / plant for phosphorus. The results of organoleptic analysis showed that there were no differences from all parameters in kale plants in mechanical filters and kale plants in hydroponic tank. <p align="justify"> <br />