Agriculture · Essential Nutrients
Agricultural Nutrients — Numbers That Matter
The raw elements that feed the world: nitrogen, phosphorus, potassium, and beyond. Without these inputs, global crop yields would collapse by 30–50%. Every number links to a primary source.
Global Fertilizer Production (2023)
~208M tonnes nutrients
Total nutrient content (N + P₂O₅ + K₂O) produced worldwide.
Nitrogen accounts for roughly 58%, phosphate 23%, and potash 19%. Over 90% of mined phosphate rock goes directly to fertilizer.
Global Ammonia Production (2024)
~157M tonnes
Ammonia (NH₃) is the starting material for nearly all nitrogen fertilizers. About 70% of global ammonia goes to fertilizer production. China alone produces roughly 31% of the world total, followed by Russia, India, and the United States.
Phosphate Rock Reserves (Global)
~71B tonnes
Morocco alone holds ~50 billion tonnes — roughly 70% of the world's phosphate reserves. At current mining rates, global reserves could last over 300 years, but distribution is extremely uneven.
Potash Reserves (Global)
~4.8B tonnes K₂O
Canada leads with 1.1 billion tonnes, followed by Laos (~1B t), Russia (~920M t), and Belarus (~750M t). Global potash production in 2024 was ~76 million tonnes of KCl product.
The Big Three — N, P, K
N
Nitrogen
Drives leaf growth, chlorophyll production, and protein synthesis. The most consumed nutrient by volume.
Raw material
Atmospheric N₂
Reserves
Effectively unlimited
Ammonia output 2024
~157M t
Fertilizer share
~58% of total
Top producer
China (~31%)
P
Phosphorus
Essential for root development, energy transfer (ATP), and flowering. Mined as phosphate rock — no synthetic substitute.
Raw material
Phosphate rock
Reserves
~71B t
Production 2025
~240M t rock
Reserve life
~300+ years
Top reserves
Morocco (70%)
K
Potassium
Regulates water uptake, enzyme activation, and disease resistance. Mined as potash (KCl or K₂SO₄).
Raw material
Potash ore
Reserves
~4.8B t K₂O
Production 2024
~76M t KCl
Reserve life
~100+ years
Top producer
Canada (33%)
Secondary & Micronutrients
S
Sulfur
Critical for protein synthesis and chlorophyll. Key raw material for sulfuric acid (H₂SO₄), which is needed to process phosphate rock into fertilizer.
Raw material
Petroleum/gas byproduct
Reserves
Effectively unlimited*
Production 2024
~85M t
Top producer
China (~23%)
USGS MCS 2026 ·
*Byproduct of oil/gas refining, not a mined primary resource
Zn
Zinc
Essential micronutrient for enzyme function, growth hormones, and starch formation. Zinc deficiency affects ~50% of global cereal-growing soils.
Raw material
Zinc ore (sphalerite)
Reserves
~210M t
Mine production 2024
~12M t
Top producer
China (~33%)
B
Boron
Required for cell wall structure, pollen viability, and sugar transport. Though needed in tiny amounts, deficiency causes crop failure across wide areas.
Raw material
Borate minerals
Reserves
~1.2B t
Production 2024
~4.2M t B₂O₃
Top producer
Turkey (~60%)
Where Do Fertilizer Nutrients Go? (2023)
58%
Nitrogen (N)
~120M t
23%
Phosphate (P₂O₅)
~48M t
19%
Potash (K₂O)
~40M t
+S, Zn…
Secondary & Micro
Growing demand
Phosphate Rock Reserves by Country
Economically recoverable reserves. Morocco's dominance in phosphate is one of the most extreme resource concentrations on Earth. Source: USGS MCS 2026; Discovery Alert
Potash Reserves by Country (K₂O equivalent)
Source: Natural Resources Canada — Potash Facts (updated Jan 2026); USGS MCS 2026
NPK + Secondary Nutrients — Quick Comparison
How do the key agricultural nutrients compare on reserves, production, and supply risk?
| Nutrient | Global Reserves | Annual Production | Reserve Life | Concentration Risk |
|---|---|---|---|---|
| Nitrogen (N) | Unlimited | ~157M t NH₃ | ∞ | Low |
| Phosphorus (P) | ~71B t rock | ~240M t rock | ~300 yrs | Very High |
| Potassium (K) | ~4.8B t K₂O | ~76M t KCl | ~100+ yrs | Moderate |
| Sulfur (S) | Eff. unlimited* | ~85M t | ∞* | Low |
| Zinc (Zn) | ~210M t | ~12M t | ~18 yrs | Moderate |
| Boron (B) | ~1.2B t | ~4.2M t B₂O₃ | ~280 yrs | High |