DAP Fertilizer: What Buyers Should Know
Diammonium phosphate (DAP) is a high-phosphorus granular fertilizer with an NPK analysis of 18-46-0, applied at planting to boost root development and early growth in row crops. Buyers source DAP from China for high available phosphate, uniform granules, and competitive bulk pricing.
The key specifications are total and available P2O5, water-soluble phosphorus, granule hardness, and moisture. High water-soluble phosphorus ensures fast early-season uptake. The curated suppliers below are screened against these criteria.
Curated Suppliers — DAP Fertilizer
7 Checks Before Choosing a DAP Fertilizer Supplier
1. Nutrient analysis
Standard DAP is 18-46-0; confirm total and available P2O5 on the certificate.
2. Water-soluble P2O5
Look for high water-soluble phosphate (typically 90%+ of total) for fast uptake.
3. Granule hardness
Hard, uniform 2-4mm granules reduce breakage and dust in handling.
4. Moisture
Keep moisture low (below 2%) to avoid caking in storage and shipping.
5. Color & purity
Light color and low impurities indicate consistent production quality.
6. Application timing
Place DAP at or before planting; manage starter placement near the seed zone carefully.
7. Packaging
50kg bags, jumbo bags, or bulk; confirm import registration for your market.
Frequently Asked Questions
What is the NPK of DAP fertilizer?
DAP has an NPK analysis of 18-46-0: 18% nitrogen and 46% phosphate (P2O5) with no potassium.
When should I apply DAP?
DAP is best applied at or before planting to support root development and early crop establishment.
Is DAP water soluble?
DAP is highly water soluble and releases phosphorus quickly; it is also used in starter and fertigation programs.
What is the MOQ for DAP from China?
Typically 25-50 metric tons per container or bulk order; see each supplier profile for exact terms.