Effect of Nasa Liquid Organic Fertilizer (LOF) Concentration and Varieties on Growth and Production of Lettuce Plants (Lactuca Sativa L.) with the DFT Hydroponic System

Abstract

Effect of Nasa Liquid Organic Fertilizer (LOF) Concentration and Varieties on Growth and Production of Lettuce Plants (Lactuca sativa L.) with DFT Hydroponic System. Lettuce (Lactuca sativa L.) is a short-lived leaf vegetable that can be grown in both highlands and lowlands. Generally consumed in a raw state so that hygiene is a top priority. Currently the demand for lettuce has not been fulfilled optimally, this is due to constraints in cultivation which causes low quality and yield of lettuce production. Efforts to increase lettuce production can be done by adding organic fertilizers as a source of plant nutrition and selecting the right lettuce varieties. This study aims to determine the interaction between the concentration of Nasa LOF fertilizer and lettuce varieties on the growth and production in hydroponic cultivation with DFT system. This study used a factorial randomized block design  with a 2-factor treatment design. The first factor is the concentration of Nasa LOF with 3 levels, namely 4 mL/L; 6 mL/L; 8 mL/L and the second factor is the lettuce variety with 3 levels, namely the new grand rapid variety of lettuce; karina; kriebo le 873 which consisted of 3 groups. The results of this study showed an interaction between the concentration of Nasa LOF and lettuce varieties on the observed variables of plant height (24 DAP and 31 DAP), number of leaves (31 DAP) and wet weight per lettuce plant (31 DAP). The single treatment of Nasa LOF concentration had no significant effect on all variables observed in lettuce. The single treatment of lettuce varieties affected the observed variables of plant height (10 DAP and 17 DAP), number of leaves (24 DAP) and root length (10 DAP, 17 DAP, 24 DAP, and 31 DAP)