CAN fertilizer contains a total of 26% nitrogen in the forms of ammonium and nitrate. It is a top fertilizer used to fertilize all plants except rice, especially in lime-free soils with acidic pH. CAN fertilizer, on the one hand, provides the plant with the nitrate it needs, and on the other hand, it meets the nitrogen that the plant will need throughout the entire growing season by retaining ammonium ions by soil colloids.