Comparison · fertilizer
Organic amendments: compost vs farmyard manure vs poultry manure vs vermicompost
Compare bulky organic amendments by class and context.
| Dimension | Compost | Farmyard manure | Poultry manure | Vermicompost |
|---|---|---|---|---|
| Category | Fertilizer | Fertilizer | Fertilizer | Fertilizer |
| Class | organic | organic | organic | organic |
| Typical grade (N-P₂O₅-K₂O) | Variable, low analysis — typically well under 2% each of N, P₂O₅, and K₂O on an as-applied basis | Variable, low analysis — typically a few percent or less each of N, P₂O₅, and K₂O, depending on livestock species, bedding, and storage | Variable, low-to-moderate analysis — generally higher in nitrogen and phosphorus than cattle manure, exact content depending on bird type, diet, bedding, and storage | Variable, low analysis — generally a few percent or less each of N, P₂O₅, and K₂O, with nutrients in more readily available forms than raw feedstock |
Methodology
Class/description read from each entry.
Limitations
- Nutrient content of organic materials is highly variable — test before use.
Sources
This article draws on the following authoritative sources. See our sources & methodology for how they are selected.
- [1]IFA — International Fertilizer Association (opens in a new tab)Moderate
International Fertilizer Association (IFA)
- Type:
- Standards body
- Jurisdiction:
- Global
- Accessed:
- 2026-07-12