NUTRI-CHECK NET platform

Recommendation system by: Expert group, members from research and advisory services

The system provides recommendations for soil management and fertilisation of arable and vegetable crops.

Wheat

Maize

Potatoes

Nitrogen

Phosphorus

Potassium

Publisher	Expert group, members from research and advisory services
Name	Handboek bodem en bemesting / Handbook soil and fertilisation
Weblink	https://www.handboekbodemenbemesting.nl/nl/handboekbodemenbemesting.htm
Countries covered	Netherlands
Regions covered	Whole country
Language	Dutch/Flemish

Crops covered	Wheat, Maize, Potatoes, Onions, Carrot, Vegetables, Cover crops, Other cereals, Brassicas, Sugar beet, Other Vegetables, Other arable crops
Nutrients covered	Nitrogen (N), Phosphorus (P), Potassium (K), Sulphur (S), Calcium (Ca), Magnesium (Mg), Boron (B), Copper (Cu), Manganese (Mn), Zinc (Zn)
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, N-supply capacity
Soil Nitrogen Assess Method	Estimated
Factors for estimated Soil Mineral N	Soil type, Rainfall, Past management
Soil Nitrogen content measurement	CaCl2 (0.01 M) Spectrofotometric measuring
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	Ammonium lactate; Calcium chloride; P-water
Potassium
Crops for Potassium Recommendation	Maize, Potatoes, Wheat
Soil Potassium content measurement	Lab based analysis
Lab analysis method for Potassium	Calcium chloride; NIR;
Potassium Sampling Frequency	Every 3-4 years
Potassium Measurement Method	Lab Analysis: K-HCl
Soil available Potassium(Κ) from potash clays	The new system no longer looks for soil type, just soil test/soil analysis

Guidance for minimizing nitrate leaching	Not Provided
Crops for which the recommended N rate is adapted depending upon nitrate leaching risk	None

Nitrogen
Dry Springs	Not Considered
Advice on irrigation for N recommendation	Not Provided
Spring Crop N content	Not Accounted for
Accepted methods for assessment of spring crop N content
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	Other
Expected yields	Estimated in season N requirement can be adjusted for expected yields
Basis of crop N requirements	Crop approach, Whole rotation
Phosphorus
Current in season crop P requirement	Estimated
Basis for P requirement estimation	Other
Expected yields	Estimated P requirement can be adjusted for expected yields
Basis of crop P requirements	Crop approach, Rotation 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, Rotation 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	Available
Available adjustments for potatoes	Variety, soil type; There are general recommendations for seed potatoes, ware potatoes and starch potatoes. And guidelines for adaptation based on variety and/or maturity type (early, late, very late)

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, Green manure crops
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	-
Types of organic materials for which regulation stipulates a sampling requirement	Certain types

Guidance on fertilizer application timings	Provided, Adjusted for the total amount of nutrient applied
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	Different
Number of fertiliser N applications in maize (or potatoes)	1-2
P & K application frequency in winter wheat	Several times 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	Maize, Potatoes

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General information