| Product Name | Micronutrient Fertilizer |
| Definition | Fertilizer containing one or more essential micronutrients for crop growth and development, with the nutrient content clearly labeled. Micronutrients are essential elements required by plants in very small amounts (less than 0.1% of dry weight), including boron, zinc, manganese, iron, copper, molybdenum, chlorine. |
| Essential Micronutrients | Boron (B), Zinc (Zn), Manganese (Mn), Iron (Fe), Copper (Cu), Molybdenum (Mo), Chlorine (Cl) |
| Main Types & Specifications | Boron Fertilizers: Borax, Boric Acid, Boron-Magnesium Fertilizer (soil application: 0.5-0.75 kg/mu; foliar spray: 0.1%-0.3% solution).Zinc Fertilizers: Zinc Sulfate (ZnSO₄·7H₂O, Zn 22%), Zinc Oxide, Zinc Chloride, Chelated Zinc (Zinc Sulfate is most common).Manganese Fertilizers: Manganese Sulfate (MnSO₄·H₂O, Mn 31%), Manganese Carbonate, Manganese Chloride, Manganese Oxide (Manganese Sulfate is most common).Iron Fertilizers: Ferrous Sulfate (FeSO₄·7H₂O, Fe 19%), Ferric Sulfate, Chelated Iron (EDTA-Fe).Copper Fertilizers: Copper Sulfate (CuSO₄·5H₂O, Cu 25%), Chelated Copper.Molybdenum Fertilizers: Ammonium Molybdate ((NH₄)₆Mo₇O₂₄·4H₂O, Mo 54%), Sodium Molybdate (Mo 39.7%). |
| Features | Low application rates (50-100 grams to 1 kg per mu); crop-specific nutrient requirements; chelated products provide excellent water solubility for rapid nutrient absorption; multiple application methods (foliar spray, soil application, seed treatment). |
| Main Applications | Boron: Promotes flowering and fruiting; prevents "blossom but no fruit" in rapeseed and cotton; enhances root development and sugar transport.Zinc: Prevents rice "stiff seedling" and corn white seedling; controls fruit tree little leaf disease; improves grain yield and quality (deficient in calcareous soils and paddy soils).Manganese: Prevents gray leaf spot in oats and wheat, brown spot in legumes; increases potato and sugar beet yields.Iron: Controls fruit tree yellowing (chlorosis); chelated iron is highly effective in alkaline soils; important for peanuts, soybeans, and other legumes.Copper: Controls white blast in wheat and barley; prevents branch dieback in fruit trees due to copper deficiency.Molybdenum: Essential for nitrogen fixation in legumes; increases protein content; prevents "whiptail" in cauliflower and citrus yellow spot; works best when combined with rhizobia inoculation. |
| Packaging | Solid products: 25kg/50kg woven bags (PE liner or paper-plastic composite), 1000kg jumbo bags; Liquid products: 200L drums, IBC totes. Packaging must comply with GB 8569 "Solid Chemical Fertilizer Packaging". |
| Storage Conditions | Store in cool, dry, well-ventilated area; protect from moisture and rain; ferrous sulfate and zinc sulfate are highly hygroscopic and should be kept sealed; avoid mixing with alkaline substances. |
| Shipping Requirements | Most solid micronutrient fertilizers are non-hazardous, shipped as general cargo (copper sulfate is Class 9 hazardous material); protect from moisture and rain; handle with care. |
| Quality Standards | Foliar Micronutrient Fertilizer: GB/T 17420-2020 (current); Granular Secondary and Micronutrient Fertilizer: HG/T 5171-2017; Solid Chemical Fertilizer Packaging: GB 8569-1997. Export standards may reference ISO 14855 (biodegradability) and FAO/WHO 2019 (pollutant limits). |
| Minimum Order Quantity | Standard 20-25 tons (1×20'FCL); trial order 5-10 tons (bags) negotiable |
| Delivery Time | Standard 7-15 working days; custom packaging 15-25 working days |
| Payment Terms | T/T (30% deposit, 70% against B/L copy); FOB/CFR/CIF supported |