Table 2 Classification of enrichment factor
Enrichment factor | Soil quality |
|---|---|
EF < 2 | Deficiency to minimal enrichment |
2 < EF < 5 | Moderate enrichment |
5 < EF < 20 | Significant enrichment |
20 < EF < 40 | Very high enrichment |
EF > 40 | Extremely high enrichment |