Main features and technical properties of ADOB® chelates
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| Chelate features | IDHA | EDTA | DTPA | HBED |
|---|---|---|---|---|
| ADOB®’s global patent | yes | no | no | yes, Fe 7% |
| Biodegradable | yes | no | no | no |
| Technology 2.0 | yes | no | no | no |
| Microgranulated, dust-free | yes | yes | yes | no, microcrystallisation |
| Solubility in 20°C | 700-750 g/l | 600-1700 g/l | 550-1800 g/l | 55 g/l |
| Density (kg/m³) | 750-950 | 800-950 | 750-900 | 800-850 |
| Free from anions Cl–, SO4-2, NO3– | yes | no | no | yes |
| Sodic | yes | yes | yes | yes |
| Potassic | no | yes | yes | no |
| Ammonic | no | yes | yes | no |
| Stability constant for iron (Fe) | 10-18 | 10-23 | 10-25 | 10-39 |
| Soil application | yes | yes | yes | yes |
| Foliar application | yes | yes | no | no |
| Fertigation, hydroponics | yes | yes | yes | yes |
| Acceptable soil pH | max. 7.5 (Fe max. 6.5) | max. 7.5 (Fe max. 6.5) | 6.5-7.5 | >7.5-12 |
| Single chelates | yes | yes | only Fe and Mn | only Fe and Zn |
| Pure chelates, chelate mixtures | yes | yes | yes | no |
| Liquid | yes | yes | yes | only formulated, not pure |
| Miscibility with pesticides | according to compatibility table and test trial |
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| Chelation degree | 100% | 100% | 100% | 100% |
| Content of ortho-ortho isomers | only biodegradable SS | none | none | none |
