Interpretive Nutrient Levels for Plant Analysis
Potatoes, Irish
| Low | Normal | High | Excessive | |
|---|---|---|---|---|
| Nitrogen (% DW) | 3.50 |
4.50 |
6.00 |
7.50 |
| Phosphorus (% DW) | 0.22 |
0.29 |
0.50 |
0.61 |
| Potassium (% DW) | 1.50 |
2.00 |
4.10 |
5.00 |
| Calcium (% DW) | 0.65 |
0.76 |
1.00 |
4.00 |
| Magnesium (% DW) | 0.20 |
0.40 |
1.00 |
1.25 |
| Sulfur (% DW) | 0.20 |
0.30 |
0.50 |
1.00 |
| Manganese (ppm DW) | 20 |
30 |
250 |
800 |
| Iron (ppm DW) | 40 |
50 |
100 |
600 |
| Copper (ppm DW) | 5 |
7 |
20 |
200 |
| Boron (ppm DW) | 18 |
25 |
50 |
180 |
| Zinc (ppm DW) | 35 |
45 |
250 |
500 |
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
