Interpretive Nutrient Levels for Plant Analysis
Fern, Boston
| Low | Normal | High | Excessive | |
|---|---|---|---|---|
| Nitrogen (% DW) | 1.50 |
2.10 |
3.00 |
5.00 |
| Phosphorus (% DW) | 0.15 |
0.25 |
0.70 |
1.00 |
| Potassium (% DW) | 1.00 |
1.60 |
3.80 |
6.00 |
| Calcium (% DW) | 0.25 |
0.40 |
2.50 |
4.00 |
| Magnesium (% DW) | 0.15 |
0.25 |
1.00 |
1.50 |
| Sulfur (% DW) | 0.10 |
0.20 |
0.50 |
0.75 |
| Manganese (ppm DW) | 15 |
27 |
200 |
500 |
| Iron (ppm DW) | 15 |
28 |
300 |
1000 |
| Copper (ppm DW) | 4 |
6 |
32 |
50 |
| Boron (ppm DW) | 10 |
20 |
70 |
100 |
| Zinc (ppm DW) | 10 |
33 |
65 |
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
