| Plant species |
Growth stage (analysed plant part) |
Optimum supply (dry matter) |
|
|
Mg (%) |
S (%)
SO4-S
(mg kg-1) |
| Coconut |
Frond 14 |
0.30 |
0.17 |
| Oil palm |
Frond 17 |
0.25-0.35 |
0.25-0.35 |
| Coffee |
4th pair of leaves from the tip of bearing branches |
0.25-0.40 |
200-1000 |
| Tea |
Plucking (1st leaf + bud) |
0.07-0.23 |
300-500 |
| Almond |
Mid season (leaf) |
0.46 |
0.61 |
| Apple |
(Mid leaf from current season's extension shoot) |
0.21-0.25 |
0.20-0.40 |
| Avocado |
Summer flush (fully expanded leaf, non-fruiting shoot) |
0.25-0.80 |
0.20-0.30 |
| Banana |
Active growth (med. sized suckers, 3rd leaf) |
0.30-0.46 |
0.23-0.27 |
| Cantaloupe |
Mid growth (youngest mature leaf) |
0.35-0.80 |
0.25-1.00 |
| Cherry |
Middle of current season (mid-shoot leaves) |
0.12-0.25 |
0.12-0.20 |
| Citrus |
5-7 months old leaves (mature leaves from non-fruiting spring extension) |
0.26-0.6 |
0.21-0.40 |
| Grapevine |
Flowering (petiole of basal leaf opposite bunch) |
>0.30 |
|
| Guava |
Active growth (mid-shoot leaves from fruiting shoot) |
0.25-0.40 |
|
| Hazelnut |
End of July (mid-terminal leaves) |
0.37 |
0.22 |
| Kiwi fruit |
Fruit filling (1st leaf above fruit) |
0.40-0.50 |
0.33-0.44 |
| Macadamia |
When all leaves hardened (mature leaf from 2nd -3rd whorl of current season's growth) |
0.09-0.11 |
0.17-0.25 |
| Mango |
After flowering (none-bearing branches) |
0.20-0.40 |
|
| Passionfruit |
July-August (youngest fully expanded leaf) |
0.25-0.35 |
0.20-0.40 |
| Peach |
Middle of the current season's extension growth |
0.30-0.80 |
0.20-0.40 |
| Pear |
Leaf + petiole from mid-shoot of current season's extension growth |
0.30-0.50 |
0.17-0.26 |
| Pineapple |
6-8 MAP before flower initiation (youngest mature leaf) |
0.41-0.57 |
0.07-0.10 |
| Plum |
Leaves from middle of current season's extension growth |
0.30-0.80 |
|
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|
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