October 2025 Release

This post outlines the October 2025 updates of the FDM libraries: @svenvw/fdm-app, @svenvw/fdm-calculator, @svenvw/fdm-core, and @svenvw/fdm-data. This release introduces a wide range of improvements across the application, calculation engine, and data management, focusing on enhanced user experience, improved performance, and expanded functionality.

FDM Application Enhancements (@svenvw/fdm-app)

• Fertilizer Management:
  • Users can now edit previously created fertilizer applications, both for individual fields or a given cultivation type.
  • The fertilizer list now displays the RVO mestcode colored by fertilizer type for easier identification.
  • The design of the fertilizer application list has been improved with icons and better spacing.
  • The term "Meststoftype" has been replaced with "Mestcode (RVO)" in fertilizer forms.
• Nutrient Management:
  • The nutrient advice page now shows a progress bar for nutrients with an advice of 0.
  • Doses between 0 and 1 kg/ha are now displayed with a precision of 2 decimal places.
  • The fertilizer applications page for a field now includes metrics for norms, nitrogen balance, and nutrient advice.
• Farm & Field Management:
  • A new page has been added at farm details to manage organic certifications for a farm.
  • A new page has been added at farm details to state whether the farmer has done grazing or intends it for a year.
  • For cultivations, default dates based on the cultivation catalogue date are used for b_lu_start and b_lu_end if available when adding a field with a cultivation.
• Nitrogen Balance:
  • In case a field has an error at the nitrogen balance calculation, the balance at farm level and other fields are still shown, but an error message for the specific field is shown.
• Error Reporting:
  • Calculation errors at nitrogen balance calculation are now submitted to Sentry.
  • Other "other" errors for loaders and actions are also submitted to Sentry.
• Performance:
  • The app now uses cached versions of the calculator functions for norms and balance.
• Bug Fix:
  • The atlas no longer redirects the users to an invalid route when they don't have any farms.
  • Fixed link in header of fertilizers.

FDM Calculator Upgrades (@svenvw/fdm-calculator)

• Nitrogen Balance:
  • The nitrogen balance can now be calculated per field instead of only per farm.
  • The nitrogen balance calculation now gracefully handles errors for individual fields. Instead of failing the entire farm calculation, it will now return partial results for successfully calculated fields and provide specific error messages for fields that encountered issues.
• Nutrient Advice:
  • Added getNutrientAdvice and requestNutrientAdvice to fetch nutrient advices from the NMI API.
• Norms:
  • Added functions to calculate the norm filling by fertilizer application for NL 2025.
  • Fixes to differentiate stikstofgebruiksnorm for grassland based on "beweiden" or "volledig maaien".
• Performance:
  • Added cached versions of main calculator functions for balance and norms to enable caching.

FDM Core Developments (@svenvw/fdm-core)

• Cultivation:
  • Adds b_lu_start_default and b_date_harvest_default to cultivations catalogue as the default start and harvest dates of a cultivation.
  • Adds getDefaultDatesOfCultivation as helper function to determine default dates for cultivations.
• Grazing:
  • Add the table intending_grazing to store if the farm is planning to perform grazing.
  • Add the functions setGrazingIntention, removeGrazingIntention, getGrazingIntention and getGrazingIntentions to manage if a farm is planning to do grazing.
• Organic Certification:
  • Add tables organic_certifications and organic_certifications_holding to store information of farm if they have organic certificates.
  • Add the functions addOrganicCertification, isOrganicCertificationValid, listOrganicCertifications, getOrganicCertification, and removeOrganicCertification to manage organic certifications of a farm.
• Fertilizers:
  • Add p_type_rvo as new parameter to fertilizersCatalogue. It describes the 'Mestcode' according to RVO (Dutch government).
• Fields:
  • Improve check for b_isproductive by checking if name contains 'buffer'.
  • Add the missing options for b_acquiring_method: "In gebruik van een terreinbeherende organisatie" (nl_03), "Tijdelijk gebruik in het kader van landinrichting" (nl_04), "Pacht van geringe oppervlakten" (nl_10) and "Natuurpacht" (nl_11).
• Performance:
  • Add new db schema fdm-calculator to cache calculation results and store calculation errors. The decorator function withCalculationCache enables adds the functionality to add caching to calculator functions.

FDM Data Updates (@svenvw/fdm-data)

• Cultivation Catalogue:
  • Adds b_lu_start_default and b_date_harvest_default to BRP catalogue.
• Fertilizer Catalogue:
  • Add p_type_rvo to baat catalogue.

FDM Docs (@svenvw/fdm-docs)

• Update and extend the documentation for 2025 Dutch Fertilizer Application Norms, e.g. explaining how filling is calculated.

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These updates reflect our ongoing commitment to providing a robust and comprehensive platform for farm data management. We encourage you to explore these new features and welcome any feedback or contributions on our GitHub repository.