MERSI M. SOLLE Pengarang Yosefina Lewar, SP., MP Dosen Pembimbing 2 Ir. Ali Hasan, M.Si Dosen Pembimbing 1 I Komang Sudarma, SP., MP Penguji 1 Dr. Laurensius Lehar, S.P. M.P Penguji 2

Long beans (Vigna sensis L.) are a type of vegetable that is widely used as a source of food and medicine. One of the factors affecting the productivity of long beans is due to the availability of seeds. One of the factors affecting the productivity of long bean plants is the availability of seeds. Therefore, fertilizer is needed that can increase the crop production of long beans. One of the materials that can be used is banana weevil liquid organic fertilizer. So, the purpose of this study was to examine the effect of differences in the concentration of liquid organic fertilizer from banana weevil on the yield and quality of organic long bean seeds and to determine the concentration of liquid organic fertilizer for banana weevil which gave good yield and quality of organic long bean seeds.This study used a rando mized block design (RBD) with one factor and was repeated five times.The factors were tested with five treatment levels without POC (P0),10 ml POC/L (P1),20 ml POC/L (P2), 30ml POC/L (P3) and 40 ml POC/ L (P4).Supporting variable sinclude; soil media analysis before harvesting and NPK analysis on banana weevil liquid organic fertilizer, while the main variable sinclude;number of dry pods perplant,number of dry pods perplot, dry seed weight per plant, seed weight per plot, weight of 100 seeds, germination capacity, germination speed and simultaneous growth. The results of the study and thequality of organic long beanseeds wereinfluenced by differences in the concentration of liquid organic fertilizer from banana weevil and the concentration of liquid organic fertilizer for banana weevil gave the best results for yield and the best quality of organic long bean seeds was P4 (40 ml /L). Keywords: Seed, Long Beans, Organic Fertilizer, Banana Weevil