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Potatoes, Irish

Interpretive Nutrient Levels for Plant Analysis

Potatoes, Irish


Low Normal High Excessive
Nitrogen (% DW) 3.50
4.50
6.00
7.50
Phosphorus (% DW) 0.22
0.29
0.50
0.61
Potassium (% DW) 1.50
2.00
4.10
5.00
Calcium (% DW) 0.65
0.76
1.00
4.00
Magnesium (% DW) 0.20
0.40
1.00
1.25
Sulfur (% DW) 0.20
0.30
0.50
1.00
Manganese (ppm DW) 20
30
250
800
Iron (ppm DW) 40
50
100
600
Copper (ppm DW) 5
7
20
200
Boron (ppm DW) 18
25
50
180
Zinc (ppm DW) 35
45
250
500