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nitrogen stabilizers for agricultural use; nitrification inhibitors used as soil conditioners for agricultural purposes for reducing the rate at which ammonium is converted to nitrate; chemicals, namely, additives for use as nitrogen stabilizers in fertilizer for agricultural use; chemicals, namely, additives for use as nitrification inhibitors for agricultural use; fertilizers; agricultural chemicals for nitrogen management in soils, except fungicides, herbicides, insecticides and parasiticides; agricultural chemicals for reducing nitrogen loss, increasing nitrogen availability, and increasing nitrogen uptake by crops