Chemical Fertilizers
Manufactured mineral and chemical fertilizers, beginning with Lawes's superphosphate process and later expanding to industrial nitrogen, phosphate, and potassium fertilizers.
Core metadata
- ID: chemical_fertilizers
- Era: Industrial
- First known date: 1842 (exact)
- Region: Rothamsted and Deptford, England
- Review status: source_checked
- Maturity: established
Prerequisites
Dependents
- Green Revolution (green_revolution_agriculture)
- Synthetic Ammonia Research (synthetic_ammonia_research)
Fields
Field lanes
- Agriculture & Food Systems: Inputs
Node sources
- Sir John Bennet Lawes, 1st Baronet (Encyclopaedia Britannica, 2026, textbook) • Supports: node, maturity
- The History of Rothamsted Research (Rothamsted Research, 2026, official_agency) • Supports: node, maturity
Prerequisite edge evidence
Edge/source evidence summary:
- Prerequisite edges: 3
- Average edge confidence: 71%
- Prerequisite sources: 3
- expert_inference: 1
- textbook: 2
| Prerequisite | Type | Confidence | Evidence level | Note | Sources |
|---|---|---|---|---|---|
| Advanced Chemistry (advanced_chemistry) | enabling | 78% | textbook | Lawes's superphosphate process depended on chemical treatment of phosphate materials with sulfuric acid. |
|
| Agriculture (agriculture) | historical_predecessor | 72% | textbook | Chemical fertilizers are an input technology for crop agriculture, so agriculture is the application lineage rather than a manufacturing component. |
|
| Mining (mining) | common_dependency | 62% | expert_inference | Phosphate rock, bones, and mineral inputs made extraction and supply chains important for fertilizer production. |
|
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