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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

Publisher -
Name Recommendation systems based on legal acts, research-based methodologies and practical experience of industry
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Countries covered Lithuania
Regions covered Whole country
Language Lithuanian

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
Basis of crop K requirements Crop approach
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
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