The extraction method is the analytical procedure used to determine the level of a particular nutrient in the soil. The extraction method and nutrient value unit must be provided for each nutrient included in the analysis, so that the nutrient values can be interpreted and classified.
If an extraction method you originally selected for a nutrient isn't supported, you'll see a red notice. Please select a different extraction method. Otherwise, the soil analysis can't be used for creating Nutrition Plans.
These extraction methods are available for nutrient interpretation and classification:
| Parameter/Nutrient | Extraction method |
| Boron (B) | Hot water |
| Calcium (Ca) | 1 M ammonium nitrate |
| CEC | Leached with 1 M ammonium acetate and 10 % potassium chloride |
| Copper (Cu) | 0.05 M EDTA disodium salt |
| Iron (Fe) | 0.05 M EDTA |
| Magnesium (Mg) | 1 M ammonium nitrate |
| Manganese (Mn) | 1 M ammonium acetate with 2 g/L quinol |
| Nitrogen (N) | Dumas combustion |
| Organic matter | Dumas combustion |
| pH | H2O |
| Phosphorus (P) | Olsen |
| Resine | |
| Potassium (K) | 1 M ammonium nitrate |
| Sodium (Na) | H2O |
| Sulphur (S) | Calcium tetrahydrogen di-orthophosphate |
| Sum of bases | Default |
| Zinc (Zn) | 0.05 M EDTA disodium salt |
If you don't know the extraction method, please contact your laboratory.
Comments
0 comments
Please sign in to leave a comment.