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Target Leaf Nutrient Ranges for Tree Fruit
Table 4. Leaf tissue standards for recently mature leaves in different tree fruit species
| Nutrient |
Unit DW |
Applea,c,d,e |
Peara,c,d,e |
Cherryb |
Peachb |
Apricotsa,b |
| Nitrogen (N) |
% |
1.7 – 2.5 |
1.8 – 2.6 |
2.00 – 3.03 |
2.7 – 3.5 |
2.4 – 3.3 |
| Phosphorous (P) |
% |
0.15 – 0.3 |
0.12 – 0.25 |
0.10 – 0.27 |
0.1 – 0.30 |
0.1 – 0.3 |
| Potassium (K) |
% |
1.2 – 1.9 |
1.0 – 2.0 |
1.20 – 3.3 |
1.2 – 3.0 |
2.0 – 3.5 |
| Calcium (Ca) |
% |
1.5 – 2.0 |
1.0 – 3.7 |
1.20 – 2.37 |
1.0 – 2.5 |
1.10 – 4.00 |
| Magnesium (Mg) |
% |
0.25 – 0.35 |
0.25 – 0.90 |
0.30 – 0.77 |
0.25 – 0.50 |
0.25 – 0.80 |
| Sulfur (S) |
% |
0.01 – 0.10 |
0.01 – 0.03 |
0.20 – 0.40 |
0.2 – 0.4 |
0.20 – 0.40 |
| Copper (Cu) |
mg/Kg |
5 – 12 |
6 – 20 |
0 – 16 |
4 – 16 |
4 – 16 |
| Zinc (Zn) |
mg/Kg |
15 – 200 |
20 – 60 |
12 – 50 |
20 – 50 |
16 – 50 |
| Manganese (Mn) |
mg/Kg |
25 – 150 |
20 – 170 |
17 – 160 |
20 – 200 |
20 – 160 |
| Iron (Fe) |
mg/Kg |
60 – 120 |
100 – 800 |
57 – 250 |
120 – 200 |
60 – 250 |
| Boron (B) |
mg/Kg |
20 – 60 |
20 – 60 |
17 – 60 |
20 – 80 |
20 – 70 |
