The purpose of this study was to determine the content of Zinc, Iron, Copper, and Manganese in various forage swamp in the rainy season and dry season. This study uses Factorial Completely Randomized Design. The first factor was the seasonal (rain and dry) and the second factor is the forages (Oryza rupifogon, Mimosa gigantika, and Eleoucharis dulcis). Forage samples were analyzed in the Labora…