Recommendation system by: -
Recommendation systems based on legal acts, research-based methodologies and practical experience of industry
There is no unified recommendation system on nutrient management in Lithuania. Recommendation systems consist of legal acts, research-based recommendations and methodologies, and the practical experience of individual companies/agronomists.
Wheat
Maize
Potatoes
Nitrogen
Phosphorus
Potassium
| Crops covered | Wheat, Maize, Potatoes, Vegetables, Cover crops, Other cereals, Brassicas |
| Nutrients covered | Nitrogen (N), Phosphorus (P), Potassium (K) |
| Target soil pH Recommendations based on soil and cropping types | Provided |
| Nitrogen | |
| Crops for Nitrogen Recommendation | Maize, Potatoes, Wheat |
| Nitrogen Analysis Options | Organic matter, Total N, Humus |
| Soil Nitrogen Assess Method | Lab Analysis |
| Factors for estimated Soil Mineral N | |
| Soil Nitrogen content measurement | Extraction with KCl; K2SO4; Tiurin method |
| Phosphorus | |
| Crops for Phosphorus Recommendation | Maize, Potatoes, Wheat |
| Soil Phosphorus content measurement | Lab based method |
| Phosphorus Sampling Frequency | Every 3-4 years |
| Lab analysis method for Phosphorus | Phosphorus and Potassium are determined by the Egner - Rim - Domingo (A-L) method. The soil is extracted in a solution of 1 M Lactic acid, 3 M Acetic acid, 1 M ammonium acetate, pH 3.7. Soil to solvent ratio 1:20, stirred for 4 hours ; |
| Potassium | |
| Crops for Potassium Recommendation | Maize, Potatoes, Wheat |
| Soil Potassium content measurement | Lab based analysis |
| Lab analysis method for Potassium | Phosphorus and Potassium are determined by the Egner - Rim - Domingo (A-L) method. The soil is extracted in a solution of 1 M Lactic acid, 3 M Acetic acid, 1 M ammonium acetate, pH 3.7. Soil to solvent ratio 1:20, stirred for 4 hours ;NIR; |
| Potassium Sampling Frequency | Every 3-4 years |
| Potassium Measurement Method | NIR |
| Soil available Potassium(Κ) from potash clays | Both soil tests and soil type |
| Guidance for minimizing nitrate leaching | Provided |
| Crops for which the recommended N rate is adapted depending upon nitrate leaching risk | Wheat |
| Nitrogen | |
| Dry Springs | Not Considered |
| Advice on irrigation for N recommendation | Not Provided |
| Spring Crop N content | Accounted for |
| Accepted methods for assessment of spring crop N content | Lab analysis; |
| Phosphorus | |
| Spring Crop P content | Not Accounted for |
| Accepted methods for assessment of spring crop P content | |
| Nitrogen | |
| Current in season crop N requirement | Estimated |
| Basis for N Requirement Estimation | Standard values for crop N content |
| Expected yields | Estimated in season N requirement can be adjusted for expected yields |
| Basis of crop N requirements | Crop approach |
| Phosphorus | |
| Current in season crop P requirement | Estimated |
| Basis for P requirement estimation | Standard values for crop P content |
| Expected yields | Estimated P requirement can be adjusted for expected yields |
| Basis of crop P requirements | Crop approach |
| Potassium | |
| Current in season crop K requirement | Estimated |
| Basis for K requirement estimation | Standard Yield |
| Expected yields | Estimated K requirement can be adjusted for expected yields |
| Crops for which yield adjustments are made | Wheat, Maize, Potatoes |
| Adjustments for Potato Recommendations | |
| Recommendations on length of growing season, variety, haulm length and/or determinacy groups | Not available |
| Available adjustments for potatoes | Timing of N application; Timing requirements for N use with manure |
| Adjustments for nitrate leaching, gaseous N-losses and Ammonia Mitigation | |
| N adjustments to account for gaseous N-losses are included for | Not included |
| Fertiliser types and additives change recommendation | |
| Ammonia mitigation strategies used for manufactured fertilisers | |
| Manure application methods used for reducing ammonia emissions | |
| Organic materials nutrient content | |
| Crop available N for different types of organic material | Calculated |
| Organic materials for which crop available N is calculated | Farmyard manure (cattle, goat, pig, sheep, horse, duck), Cattle slurry, Pig slurry, Poultry manure, Digestate, Compost, Biosolids, Waste derived materials e.g. paper crumble, food waste |
| Crop available nutrients from organic materials accounted for | Nitrogen (N), Phosphorus (P), Potassium (K) |
| Nutrients for which there is an option to input own organic material nutrient analysis | Nitrogen (N), Phosphorus (P), Potassium (K) |
| Types of organic materials for which regulation stipulates a sampling requirement | Certain types |
| Guidance on fertilizer application timings | |
| Guidance on the rate of fertiliser to apply at each timing | Provided |
| Number of fertilizer N applications in wheat | 3 |
| Application number between maize and potatoes | Does not differ |
| Number of fertiliser N applications in maize (or potatoes) | |
| P & K application frequency in winter wheat | Once a year |
| P & K application frequency between maize and potatoes | Does not differ |
| P & K application frequency in maize (or potatoes) | |
| Crops with guidance available for the placement of fertilisers | Wheat, Maize, Potatoes |
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
