Interpretive Nutrient Levels for Plant Analysis
Grapes, Any
| Low | Normal | High | Excessive | |
|---|---|---|---|---|
| Nitrogen (% DW) | 0.20 |
0.80 |
1.21 |
6.00 |
| Phosphorus (% DW) | 0.01 |
0.11 |
0.30 |
0.51 |
| Potassium (% DW) | 0.30 |
1.10 |
1.90 |
3.50 |
| Calcium (% DW) | 0.05 |
0.10 |
5.00 |
9.00 |
| Magnesium (% DW) | 0.02 |
0.25 |
0.51 |
3.00 |
| Sulfur (% DW) | 0.10 |
0.15 |
0.80 |
2.00 |
| Manganese (ppm DW) | 30 |
50 |
1000 |
7500 |
| Iron (ppm DW) | 5 |
10 |
300 |
800 |
| Copper (ppm DW) | 1 |
5 |
16 |
200 |
| Boron (ppm DW) | 20 |
25 |
51 |
101 |
| Zinc (ppm DW) | 5 |
25 |
51 |
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
