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

Address

111 Ag Analytical Services Lab
University Park, PA 16802
Directions

Hours: Monday-Friday, 8:00 AM - 4:30 PM

Ag Analytical Services Lab

Address

111 Ag Analytical Services Lab
University Park, PA 16802
Directions

Hours: Monday-Friday, 8:00 AM - 4:30 PM