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 |
Funded by the European Union and UK Research and Innovation (UKRI). Views and opinions expressed are however those of the author(s) only and do not necessarily reflect those of the European Union, European Commission or UKRI. Neither the European Union, European Commission nor UKRI can be held responsible for them.
Project Coordinators
Sarah Kendall
sarah.kendall@adas.co.ukSpyros Fountas
sfountas@aua.grheurope.nutrichecknet@gmail.com
Project Partners
