Paragraph 9
In the case of fluid fertilisers, additional information on the fertilising components may be expressed in equivalent terms of weight versus volume (kilograms per hectolitre or grams per litre).In the case of fluid fertilisers which are for foliage spraying, the soluble calcium content may be declared if it is not less than 8% calcium oxide (5.7% calcium).
TABLE 1
(a). MINIMUM TRACE ELEMENT CONTENT (PERCENTAGE WEIGHT OF FERTILISER)
| 1. Applied to the soil | 2. Leaf Spray | ||
|---|---|---|---|
| (a) Crops or grassland | (b) Horticultural use | ||
| Boron (B) | 0.01 | 0.01 | 0.01 |
| Cobalt (Co) | 0.002 | — | 0.002 |
| Copper (Cu) | 0.01 | 0.002 | 0.002 |
| Iron (Fe) | 0.5 | 0.02 | 0.02 |
| Manganese (Mn) | 0.1 | 0.01 | 0.01 |
| Molybdenum (Mo) | 0.001 | 0.001 | 0.001 |
| Zinc (Zn) | 0.01 | 0.002 | 0.002 |
(b). MINIMUM SECONDARY NUTRIENT CONTENT (PERCENTAGE WEIGHT OF FERTILISER)
| 2% magnesium oxide (MgO) ie 1.2% Mg. |
| 3% sodium oxide (Na2O) ie 2.2% Na. |
| 5% sulphur trioxide (SO3) ie 2% S. |
TABLE 2
CHELATING AGENTS FOR TRACE ELEMENTS
| Name | Abbreviation | Chemical Symbols |
|---|---|---|
| Sodium potassium or ammonium salts or acid salts of: | ||
| ethylene diamine tetraacetic acid: | EDTA | C10H16O8N2 |
| diethylene triamine pentaacetic acid: | DPTA | C14H23O10N3 |
| ethylene diamine-di (O-hydroxyphenyl acetic) acid: | EDDHA | C18H20O6N2 |
| hydroxy-2 ethylene diamine triacetic acid: | HEEDTA | C10H18O7N2 |
| ethyldiamine-di (O-hydroxy P-methyl phenyl) acetic acid: | EDDHMA | C20H24N2O6 |
| ethylene diamine di (5-carboxy-2-hydroxyphenyl) acetic acid: | EDDCHA | C20H20O10N2 |