Category
Complex fertilizers
Chemically combined NPK grades where every granule carries the full ratio.
A complex NPK is not a blend. Every granule carries the full nutrient ratio, so the material cannot segregate in transit or in the spreader — which is the whole reason to pay more for it than for a bulk blend of the same analysis.
That matters most where application accuracy is worth money: high-value crops, wide spreading widths, and any programme where a striped field will be visible at harvest.
Grades
3 grades in this category
NPK, standard grades
15-15-15 · 16-16-16 · 10-26-26 · 13-19-19 · 8-20-30
Chemically combined NPK, where each granule carries the complete ratio. The practical consequence is that the material cannot separate — not in the wagon, not in the hopper, not across a twenty-four metre bout width.
Specification ↗NPK with S, Mg and micronutrients
NPK + S / Mg / B / Zn to specification
Micronutrients are applied at a few kilograms per hectare, which makes even distribution almost impossible to achieve by blending: a handful of zinc granules in a tonne of NPK will never spread uniformly.
Specification ↗Water-soluble NPK
Fully soluble NPK for fertigation and foliar use
Fertilizer for injection rather than for spreading: fully soluble, chloride-free, and low enough in insoluble residue that it will not block a drip emitter.
Specification ↗
Incoterms 2020 · FCA · FOB · CIF · DAP · CPT · Certificate of analysis per lot
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Complex fertilizers
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