Micro-nutrients | Content (mg/kg) | ||
Low | Medium | High | |
Iron | <3.0 | 3.0 - 5.0 | >5.0 |
Copper | <0.3 | 0.3 - 0.5 | >0.5 |
Zinc | <0.9 | 0.9 - 1.5 | >1.5 |
Manganese | <0.6 | 0.6 - 1.0 | >1.0 |