Interpretive Nutrient Levels for Plant Analysis
Walnut, Black
| Low | Normal | High | Excessive | |
|---|---|---|---|---|
| Nitrogen (% DW) | 1.00 |
1.80 |
3.35 |
5.00 |
| Phosphorus (% DW) | 0.09 |
0.15 |
0.50 |
1.00 |
| Potassium (% DW) | 0.50 |
0.75 |
2.00 |
5.00 |
| Calcium (% DW) | 0.30 |
0.90 |
3.00 |
5.00 |
| Magnesium (% DW) | 0.10 |
0.30 |
1.00 |
3.00 |
| Sulfur (% DW) | 0.05 |
0.10 |
1.00 |
2.00 |
| Manganese (ppm DW) | 10 |
30 |
300 |
500 |
| Iron (ppm DW) | 50 |
100 |
400 |
500 |
| Copper (ppm DW) | 3 |
5 |
20 |
50 |
| Boron (ppm DW) | 25 |
35 |
100 |
200 |
| Zinc (ppm DW) | 15 |
25 |
75 |
150 |
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
