Abstract : One of the cultural practices that influence crop productivity is the application of fertilizer as much as plants need more nutrients during the first half of the growing period. This experiment was conducted to evaluate the nutrient uptake of rice plants fertilized with commercial chicken manure as well as the profitability of growing lowland rice fertilized with commercial chicken manure under different water management systems. An area of 667 m2 was laid out in a split plot in a randomized complete block design (RCBD) with three replications. Different water management was designated as the main plot (WM1 = Flooded and WM2 = Unflooded) and rate of fertilizer application as the subplot. The results revealed that the application of chicken manure at 9 t/ha resulted in a grain yield of 2.78 t/ha in unflooded conditions which was statistically similar to the yield under flooded conditions (2.83 t/ha). The application of chicken manure resulted in higher total nutrient uptake of lowland rice. The nutrient uptake for nitrogen, phosphorus and potassium was higher in flooded than in unflooded water management systems. The results of this experiment indicate that lowland rice can be productively grown under an unflooded water management system utilizing chicken manure as organic fertilizer. The culture of rice under unflooded conditions can save water by more than 50%. Growing lowland rice under flooded conditions is more than unflooded condition under the condition of this experiment.