Interpretive Nutrient Levels for Plant Analysis
Fir, Any
| Low | Normal | High | Excessive | |
|---|---|---|---|---|
| Nitrogen (% DW) | 0.45 |
0.66 |
2.22 |
3.50 |
| Phosphorus (% DW) | 0.05 |
0.07 |
0.26 |
0.40 |
| Potassium (% DW) | 0.20 |
0.28 |
1.84 |
2.50 |
| Calcium (% DW) | 0.09 |
0.12 |
1.39 |
2.00 |
| Magnesium (% DW) | 0.04 |
0.05 |
0.26 |
0.40 |
| Sulfur (% DW) | 0.07 |
0.11 |
0.22 |
0.40 |
| Manganese (ppm DW) | 70 |
200 |
1600 |
2000 |
| Iron (ppm DW) | 25 |
35 |
120 |
200 |
| Copper (ppm DW) | 1 |
2 |
8 |
25 |
| Boron (ppm DW) | 10 |
15 |
35 |
75 |
| Zinc (ppm DW) | 10 |
20 |
50 |
100 |
Ag Analytical Services Lab
Hours: Monday-Friday, 8:00 AM - 4:00 PM
- Email aaslab@psu.edu
- Office 814-863-0841
- Fax 814-863-4540
Ag Analytical Services Lab
Hours: Monday-Friday, 8:00 AM - 4:00 PM
- Email aaslab@psu.edu
- Office 814-863-0841
- Fax 814-863-4540
