Calculette PhosphoBio
The PhosphoBio calculator is a tool in the form of an Excel workbook that allows the calculation of phosphorus and potassium balances at the rotation level in order to help farmers and their advisors identify practices leading to the storage or removal of P and K from the soil. It inclues organic farming references acquired during the PhosphoBio project:
- P and K contents of grains and straw of the main crops
- Composition of the main fertilizers usable in organic farming for calculating phosphorus and potassium balances
- Relationships between changes in soil Olsen P2O5 and exchangeable K2O content and phosphorus or potassium balances, allowing for the estimation of probable changes in soil P and K contents based on fertilization practices
- Olsen P2O5 content thresholds adapted to organic farming to which soil P content measured at the beginning of the rotation and estimated at the end of the rotation are comparated in order to provide fertilization advice
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| Name in original language | Calculette PhosphoBio |
| Name in English | Calculette PhosphoBio (no English version). The English name would be : "PhosphoBio calculator » or « Phosphorus and Potassium balances calculator for Organic Farming » |
| Designer/ manufacturer | Chambre d'agriculture France |
| Accessibility | Free |
| Weblink | https://www.rmt-fertilisationetenvironnement.org/moodle/course/section.php?id=1341 |
| Countries of primary use | France |
| Main language | French |
| Other languages available | None |
| Brief description of the tool | The PhosphoBio calculator is a tool in the form of an Excel workbook that allows the calculation of phosphorus and potassium balances at the rotation level in order to help farmers and their advisors identify practices leading to the storage or removal of P and K from the soil. It inclues organic farming references acquired during the PhosphoBio project: |
| Target user | Advisors, Farmer |
| Target crops | Wheat, Maize, Potatoes, Barley, Beans, Oats, Oilseed rape, Peas, Rye, Soybean, Sunflower, Sorghum |
| Type of tool | Desk/computer based tool |
| The tool assesses or provides guidance on | Nutrient recommendation |
| Nutrients assessed | Phosphorus (P), Potassium (K) |
| The tool relies on a base recommendation system | No |
| The assessment frequency should be | Once per rotation |
| Required data input is | Crop, Soil analysis result, Nutrient input, Soil type, Farm location |
| The data can be imported from other tools and systems | No |
| The tools main output format is | Value in tool |
| Data can be exported | No |
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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
