Interpretive Nutrient Levels for Plant Analysis

Grapes, Bloom Time


Low Normal High Excessive
Nitrogen (% DW) 0.80
1.20
2.20
6.00
Phosphorus (% DW) 0.01
0.17
0.30
1.00
Potassium (% DW) 1.00
1.50
2.5
7.00
Calcium (% DW) 0.05
1.00
2.50
3.00
Magnesium (% DW) 0.02
0.30
0.50
3.00
Sulfur (% DW) 0.10
0.15
0.80
2.00
Manganese (ppm DW) 2
25
1000
7500
Iron (ppm DW) 10
30
100
800
Copper (ppm DW) 1
5
15
200
Boron (ppm DW) 20
25
50
400
Zinc (ppm DW) 25
30
60
500

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