Duty Rate (from China)
Subheadings
Products classified under Tariff item 3104.90.00
Granular Potassium Fertilizer 0-0-50
Granular potassium fertilizer with a 0-0-50 analysis, providing 50% potassium oxide (K2O) for sidedress applications. It is a potassic mineral fertilizer not otherwise specified under heading 31.04, as it does not match the enumerated salts in chapter note 4.
Liquid Potassium Thiosulfate Fertilizer
Liquid potassium thiosulfate fertilizer containing 25% K2S2O3, used for in-furrow and foliar applications. As a liquid potassic fertilizer not specified in the enumerated salts of chapter note 4, it falls under tariff item 3104.90.00 as 'Other'.
Mono Potassium Phosphate (MKP) Fertilizer
Water-soluble mono potassium phosphate (KH2PO4) fertilizer for fertigation, providing both potassium and phosphorus. Although it contains phosphorus, it is primarily a potassic fertilizer and is not excluded by chapter note 4, so it is classifiable under tariff item 3104.90.00.
Organic Potassium Sulfate Fertilizer
OMRI-listed potassium sulfate fertilizer derived from natural sulfate salts, suitable for certified organic production. As a potassic fertilizer not matching the enumerated salts in chapter note 4, it falls under tariff item 3104.90.00 as 'Other'.
Potassium Chloride Fertilizer (Muriate of Potash)
Granular potassium chloride (KCl), also known as muriate of potash, is a primary potassic fertilizer providing essential potassium for plant growth. It is not excluded by chapter note 4 and is classifiable under tariff item 3104.90.00 as 'Other' potassic fertilizer.
Potassium Magnesium Sulfate Fertilizer
Langbeinite ore-based fertilizer containing potassium, magnesium, and sulfur, used in organic farming. As a mineral potassic fertilizer not matching the specific salts in chapter note 4, it is classifiable under tariff item 3104.90.00.
Potassium Nitrate Fertilizer
Crystalline potassium nitrate (KNO3) fertilizer delivering potassium and nitrogen for greenhouse and hydroponic production. It is not specifically enumerated in chapter note 4 and is classifiable under tariff item 3104.90.00 as 'Other' potassic fertilizer.
Potassium Sulfate Fertilizer (Sulfate of Potash)
Crystalline potassium sulfate (K2SO4), also called sulfate of potash, supplies potassium and sulfur to crops without chloride. It is not enumerated in chapter note 4 and is classifiable under tariff item 3104.90.00 as 'Other' potassic fertilizer.
Sulpomag Potassium-Magnesium Fertilizer
Granulated sulpomag (K2SO4·2MgSO4) providing potassium, magnesium, and sulfur for crop nutrition. As a potassic mineral fertilizer not matching the enumerated salts in chapter note 4, it is classifiable under tariff item 3104.90.00.
Water-Soluble Potassium Fertilizer Blend 13-0-46
Water-soluble potassium fertilizer blend with 13% nitrogen and 46% potassium oxide for foliar and fertigation applications. Although it contains nitrogen, it is potassic-dominant and not specifically enumerated in chapter note 4, so it falls under tariff item 3104.90.00.