Assessment of lettuce (lactuca saliva) growth and yield in two different aquaponie systems

Abstract

Abstract : In different types of aquaponic system, the choice of proper planting scheme provides sustainable and vigorous food production. An experiment was conducted for a period of 60 days to evaluate raft system (T,) and bricklets medium (T2) in recirculatory aquaponic system to grow lettuce (Lactuca saliva). Each treatment was replicated thrice. In this study, climbing perch (Anabas testudineus) was used as experimental fish measuring average 8.47±1.26 cm and 12.35±3.79 g in both treatments as length and weight initially. Commercial floating pellet feed was fed to the fish up to satiation twice a day. Bricklets medium (T2) resulted higher number of plant leaves (25.27), plant height (25.37 cm) and leaf area (89.16 cm2) as compared to raft system (T,) where number of plant leaves (22.40), plant height (19.98 cm) and leaf area (72.80 cm2) were found. Moreover, higher lettuce production (kg/m2) was found in T2 (1.60) than T, (1.18). The findings of the study indicated that in recirculatory aquaponic system, bricklets medium is more potential for growth of lettuce compared to raft system.