Research on growing Brassica juncea and Lactuca sativa with organic solution on aeroponics system

Abstract

    The experiment aimed at evaluating the effects of different organic nutrient solutions extracted from agricultural wastes (fish processing, cow dung, azolla) and 4 organic solution concentrates from fish processing waste (1, 2, 4 and 8) % on the growth and yield of B. juncea and L. sativa grown on aeroponic systems. The experiment was arranged in a completely randomized design (CRD) with 3 replicates in the greenhouse. The results showed that the organic solution from fish processing waste had the best effect on growth and yield of B. juncea and L. sativa growth on aeroponic system, The concentrate of 2 % organic solution from fish processing waste was suitable for growing vegetables, as yields of B. juncea and L. sativa reached 3.55 kg (m²)^-1 and 2.67 kg (m²)^-1 (= 72.75 % and 75.85 % compared with inorganic solution) respectively. Using organic solution from fish processing waste to grow B. juncea and L. sativa showed lower NO₃⁻ content than those with Hoagland inorganic solution, and met food safety and hygiene standards.