ASN — Sulphur-Enriched Nitrogen with Rapid & Residual Release
Ammonium sulphate nitrate bridges the gap between straight AS and ammonium nitrate: 26% total nitrogen split across nitrate (7%), ammonium (19%) and sulphur at 13%. The nitrate fraction gives immediate crop response while ammonium and sulphur extend availability through the growing season. Standard choice for rapeseed, wheat and potato programmes in sulphur-depleted regions of Northern Europe and the UK. From 1,000 MT.
Technical Specification
- FOB
- CFR
- CIF
- Agriculture
- Blending
- Fertigation
Application Notes
ASN granules apply at 200–350 kg/ha depending on crop sulphur demand and soil test results. The partial nitrate content makes ASN suitable for early spring application when soil temperatures limit urea conversion. Bulk vessel or bagged delivery — moisture maintained below 0.8% to preserve granule integrity through tropical transit.
FAQ
How does ASN compare to applying AS and AN separately?
ASN provides a pre-mixed N:S ratio optimized for sulphur-responsive crops, eliminating separate spreading passes and ensuring uniform nutrient distribution. The combined product reduces logistics cost versus two-product programmes on large arable farms.
Is ASN suitable for chloride-sensitive crops?
Yes. Unlike MOP-based NPK, ASN contains no chloride, making it safe for potatoes, tobacco and fruit trees where chloride accumulation damages quality. The 13% S supports tuber and bulb development.
What is the recommended timing for ASN on winter cereals?
Apply ASN at early tillering (GS 21–25) when crop sulphur demand accelerates. Split application — 60% at tillering, 40% at stem extension — maximizes nitrogen recovery on sandy soils prone to leaching.