Floating plant cultivation is one solution that can be developed in Lebak Swampland during flood periods. Invitation compost is the result of weathering from water weeds that have been completely decomposed, so that it can be used as a source of organic matter for agricultural cultivation activities. This study aims to measure the nutrient content in invitation compost and chicken manure, analyze the effect of organic matter (invitation compost and manure) on the nutrient content of pH and C-Organic and analyze plant high yields and eggplant production results in each treatment in floating agricultural systems. The content of solicitation compost and chicken manure has a slightly acidic pH of H2O and a very high C-organic content. The best growing medium is to use solicitation compost (375 g) and chicken manure (375 g), which have optimal pH and C-organic content. Soil treatment (500 g) and invitation (250 g) had the best effect on eggplant plant height, while the best yield was obtained from the treatment of invitation compost (375 g) and chicken manure (375 g).