Interpretive Nutrient Levels for Plant Analysis
Poinsettia, Any
| Low | Normal | High | Excessive | |
|---|---|---|---|---|
| Nitrogen (% DW) | 3.50 |
4.00 |
6.01 |
7.30 |
| Phosphorus (% DW) | 0.15 |
0.30 |
0.61 |
0.90 |
| Potassium (% DW) | 1.00 |
1.50 |
3.51 |
4.00 |
| Calcium (% DW) | 0.50 |
1.00 |
1.75 |
9.99 |
| Magnesium (% DW) | 0.20 |
0.30 |
1.01 |
3.00 |
| Sulfur (% DW) | 0.05 |
0.10 |
0.31 |
1.00 |
| Manganese (ppm DW) | 40 |
60 |
301 |
650 |
| Iron (ppm DW) | 50 |
100 |
301 |
999 |
| Copper (ppm DW) | 1 |
2 |
11 |
200 |
| Boron (ppm DW) | 15 |
25 |
76 |
100 |
| Zinc (ppm DW) | 20 |
25 |
61 |
400 |
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
