P-CaCl2 analyse
P-CaCl2 is the result of determining the amount of phosphate available to the plant, using CaCl2 (a light salt). P-CaCl2 indicates how much phosphate is directly available to the crop. In recent years, it has been have found that the Olsen-P test is not always reliable for assessing P requirements, as several studies have shown yield increases in cereals that received P despite high expected P levels in the soil. The P-CaCl2 test has been assessed through trials as more accurate than the Olsen-P test in certain areas of Denmark with naturally high levels of oxalate-extractable aluminum in the soil. Additionally, the method is expected to be more reliable on soils with low pH values. The method can be used as a supplementary test for soils where the Olsen-P test is not reliable, giving a more accurate assessment of the actual P requirement in the field.
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| Name in original language | P-CaCl2 analyse |
| Name in English | P-CaCl2 analyse |
| Designer/ manufacturer | Eurofins |
| Accessibility | Sold commercially |
| Weblink | https://www.eurofins-agro.com/en/p-cacl2 |
| Countries of primary use | global |
| Main language | English |
| Other languages available | None |
| Brief description of the tool | P-CaCl2 is the result of determining the amount of phosphate available to the plant, using CaCl2 (a light salt). P-CaCl2 indicates how much phosphate is directly available to the crop. In recent years, it has been have found that the Olsen-P test is not always reliable for assessing P requirements, as several studies have shown yield increases in cereals that received P despite high expected P levels in the soil. The P-CaCl2 test has been assessed through trials as more accurate than the Olsen-P test in certain areas of Denmark with naturally high levels of oxalate-extractable aluminum in the soil. Additionally, the method is expected to be more reliable on soils with low pH values. The method can be used as a supplementary test for soils where the Olsen-P test is not reliable, giving a more accurate assessment of the actual P requirement in the field. |
| Target user | Farmer |
| Target crops | Wheat, Maize, Potatoes, Barley, Oats, Oilseed rape, Peas, Rye |
| Type of tool | Soil analysis |
| The tool assesses or provides guidance on | Soil nutrient content |
| Nutrients assessed | Phosphorus (P) |
| Nutrients assessed in the lab | P |
| The tool relies on a base recommendation system | No |
| The assessment frequency should be | As much as needed |
| Required data input is | Soil analysis result |
| The data can be imported from other tools and systems | No |
| The tools main output format is | PDF file |
| Data can be exported | Yes |