The objective in this research was to utilize nitrogen feltilizer to increase the nutrient content of swamp grass. This research arranged by using Factorial Randomizad Complete Design with four levels of urea fertilizer consentrations (0 g urea / 10 kg soils, 0,2717 g urea / 10 kg soils, 0,5434 g urea /10 kg soils, and 0,8152 g urea / 10 kg soils) and three kinds of swamp grass (Hymenachne amp/…