| 3102.21.00 | 00 | Ammonium sulfate; double salts and mixtures of ammonium sulfate and ammonium nitrate: | | | | |
| 3102.21.00 | 00 | Ammonium sulfate | t | Free | | Free |
| 3102.29.00 | 00 | Other | t | Free | | Free |
| 3102.30.00 | 00 | Ammonium nitrate, whether or not in aqueous solution | t | Free | | Free |
| 3102.40.00 | 00 | Mixtures of ammonium nitrate with calcium carbonate or other inorganic nonfertilizing substances | t | Free | | Free |
| 3102.50.00 | 00 | Sodium nitrate | t | Free | | Free |
| 3102.60.00 | 00 | Double salts and mixtures of calcium nitrate and ammonium nitrate | t | Free | | Free |
| 3102.80.00 | 00 | Mixtures of urea and ammonium nitrate in aqueous or ammoniacal solution | t | Free | | Free |
| 3102.90.01 | 00 | Other, including mixtures not specified in the foregoing subheadings | t | Free | | Free |
| 3103 | | Mineral or chemical fertilizers, phosphatic: | | | | |
| 3103.10.00 | | Superphosphates | | Free | | Free |
| 3103.10.00 | 10 | Normal and enriched superphosphates, less than 40 percent available phosphorus pentoxide (P2O5) equivalent | t | | | |
| 3103.10.00 | 20 | Concentrated superphosphates, 40 percent or more available phosphorus pentoxide (P2O5) equivalent | t | | | |
| 3103.90.01 | 00 | Other | t | Free | | Free |
| 3104 | | Mineral or chemical fertilizers, potassic: | | | | |
| 3104.20.00 | 00 | Potassium chloride | t | Free | | Free |
| 3104.30.00 | 00 | Potassium sulfate | t | Free | | Free |
| 3104.90.01 | 00 | Other | t | Free | | Free |
| 3105 | | Mineral or chemical fertilizers containing two or three of the fertilizing elements nitrogen, phosphorus and potassium; other fertilizers; goods of this chapter in tablets or similar forms or in packages of a gross weight not exceeding 10 kg: | | | | |
| 3105.10.00 | 00 | Products of this chapter in tablets or similar forms or in packages of a gross weight not exceeding 10 kg | kg | Free | | Free |
| 3105.20.00 | 00 | Mineral or chemical fertilizers containing the three fertilizing elements nitrogen, phosphorus and potassium | t | Free | | Free |
| 3105.30.00 | 00 | Diammonium hydrogenorthophosphate (Diammonium phosphate) | t | Free | | Free |
| 3105.40.00 | | Ammonium dihydrogenorthophosphate (Mono- ammonium phosphate) and mixtures thereof with diammonium hydrogenorthophosphate (Diammonium phosphate) | | Free | | Free |
| 3105.40.00 | 10 | Ammonium dihydrogenorthophosphate (Monoammonium phosphate) | t | | | |
| 3105.40.00 | 50 | Other | t | | | |
Harmonized Tariff Schedule of the United States inquiry: 3203Ã
