📚 Commodity Knowledge Base

Free reference guide to commodities we trade — specs, uses, trade routes, pricing and more. Published by Tetra Commodity Trading, Singapore.

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Fertilizers
Ammonia
The foundational nitrogen chemical used to produce urea, DAP, nitric acid and virtually all nitrogen fertilizers.
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Fertilizers
DAP (Diammonium Phosphate)
A high-analysis phosphorus fertilizer, the most widely traded phosphate fertilizer globally.
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Fertilizers
NPK (Compound Fertilizer)
A granular fertilizer containing nitrogen, phosphorus and potassium in a single product for balanced crop nutrition.
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Fertilizers
Urea
The world's most widely used nitrogen fertilizer, also used in industrial applications.