Study on the effects of organic liquid fertilizer on the growth of vegetable seedlings

Organic liquid fertilizer is the fermentation of organic material in a solution containing several elements. Liquid organic fertilizer has various benefits with organic based and natural content composition that can supplement the plant with quick absorption. This study was conducted to cultivate vegetable seedlings using liquid organic fertilizer. The purpose was to enhance the vegetable seedlings growth. The objective of this study was to observe and measure the morphological development of seedlings. Next, to analyse the nitrogen contents in the seedling leaves. Furthermore, this study used four types of organic liquid fertilizers, which are microorganism ingredients (IMO) under T1: microbe under a bamboo tree, T2: Fermented Amino Acid (FAA), T3: microbe under a virgin forest tree, and T4: Fermented Fruit Juice (FFJ), on three varieties of vegetable seedlings (Caixin green stem, lettuce butterhead and lettuce looseleaf). The experiment used Complete Randomized Design (CRD) on the effect of organic liquid fertilizer on vegetable seedlings. The data analysed parameters of growth performances in the crop. The plant height, plant width, and leaf width were recorded throughout this study. Moreover, SPAD chlorophyll meter were used in this study to check the chlorophyll content in the leaves of vegetable seedlings. Lastly, Kjeldahl method were performed to study the nitrogen content in the leaves of vegetable seedlings. This study compared four different types of organic liquid fertilizer on vegetable seedlings. The result showed that the best treatment was the treatment for vegetable seedlings was Caixin green stem T1 (Microbes under Bamboo Trees) because TI had the highest height (3.57cm) and leaf width (2.42cm) compared to other treatments. In conclusion, the study's result suggested that the treatment T1 is the best organic fertilizer to enhance the seedling planting because it had some nutrient sources with high quality of effective microorganisms (EM). Keywords: Vegetable cultivation, tray germination, liquid organic fertilizer, vegetable seedlings, Kjeldahl method, SPAD chlory meter