Interpretive Nutrient Levels for Plant Analysis
Lettuce, Any
| Low | Normal | High | Excessive | |
|---|---|---|---|---|
| Nitrogen (% DW) | 2.49 |
3.50 |
4.50 |
8.00 |
| Phosphorus (% DW) | 0.39 |
0.40 |
0.70 |
2.00 |
| Potassium (% DW) | 4.49 |
4.50 |
8.00 |
9.99 |
| Calcium (% DW) | 0.80 |
1.00 |
1.80 |
7.00 |
| Magnesium (% DW) | 0.29 |
0.30 |
0.70 |
3.00 |
| Sulfur (% DW) | 0.29 |
0.30 |
0.50 |
2.00 |
| Manganese (ppm DW) | 20 |
50 |
200 |
300 |
| Iron (ppm DW) | 49 |
50 |
150 |
800 |
| Copper (ppm DW) | 2 |
5 |
15 |
100 |
| Boron (ppm DW) | 20 |
30 |
60 |
100 |
| Zinc (ppm DW) | 24 |
25 |
75 |
300 |
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
