NEWS

OBIC 2026-03-23

Fixed

Set maximal value of D_NW to 300 in ind_nretention to prevent errors for high leaching values [OBI-37]

OBIC 2026-02-11

Changed

Rename organization of repo to nmi-agro

OBIC 2026-02-03

Changed

Adjusted the interpolation of nitrogen leaching to surface and groundwater recorded in table nleach_table

OBIC 2026-01-30

Added

Adds GitHub action to check the package on R-hub

Fixed

Fixes external link at obic_water_functions

OBIC 2025-12-18

Added

Function ind_gw_target() to modify I_H_GWR (renamed to I_E_GWR) with a correction factor based on soiltype and groundwaterclass akin to the groundwaterrecharge score from BBWPC.

Changed

Argument useClassicOBI is added to obi_field(), obi_field_dt(), and obi_farm(). This argument defaults to TRUE, when TRUE, only agronomic indicators are calculated and aggregated. When FALSE, water-related indicators (groundwater recharge, pesticide leaching, and nitrogen use efficiency in relation to groundwater and surface water) are included in the environmental score and subsequently in the total score.
When useClassicOBI = FALSE, indicators for water quality and quantity ( I_E_GW_NLEA, I_E_SW_NLEA, I_E_PEST, and I_E_GWR) are included in the calculation of S_E_OBI_A.
B_DRAIN no longer has a default value and must be supplied when useClassicOBI = FALSE
M_GREEN is set to TRUE for potato and maize on sandy soils by add_management(). This means that M_GREEN is overwritten for such cultivations when using one of the wrapper functions.
renamed I_H_NGW to I_E_GW_NLEA
renamed I_H_NSW to I_E_SW_NLEA
renamed I_H_PEST to I_E_PEST
renamed I_H_GWR to I_E_GWR
renamed I_E_NGW to I_E_GW_NRET, I_E_NGW is still part of the obic_field() and obic_farm() outputs but its use is deprecated, switch over to I_E_GW_NRET
renamed I_E_NSW to I_E_SW_NRET, I_E_NSW is still part of the obic_field() and obic_farm() outputs but its use is deprecated, switch over to I_E_SW_NRET
calc_psp() no longer changes makkink factors for specific months in a rotation. Instead, makkink factors are adjusted within a single year. For example, if in 2015 potato is grown followed by a green manure and grassland in 2016, the makkink factors in 2015 for months 1,2 3, 10, 11, and 12 are set to 0.6 (even tough the green manure partially grows in 2016). One can now indicate in which months a green manure is grown, default is from 10 up to and including 3. Lastly, the makkink factor for green manure is only set to 0.6, and only when this is higher than the non-green manure factor. The makkink factor for month 10 used to be 0.74
Introduced argument B_AREA_DROUGHT for obic_field() and as possible column in obic_field_dt() and obic_farm(). This argument is passed on to ind_gw_recharge() which is only called when useClassicOBI == FALSE. When B_AREA_DROUGHT is missing but required, it is assigned a value in by obic_field() based on B_SOILTYPE_AGR and B_AER_CBS whilst raising a warning.

Fixed

B_FERT_NORM_FR and B_DRAIN can now be supplied when using obic_field_dt() or obic_farm(). The value is set to 1 when not supplied.

OBIC 2025-08-04

Added

BRP crop codes for 2025: 7137, 7138, 7135, 7134

OBIC 2025-07-30

Changed

the format of groundwater class values (B_GWL_CLASS) that are accepted by OBIC functions and recorded in OBIC tables. Acceptable input values for B_GWL_CLASS are now: "I", "Ia", "Ic", "II", "IIa", "IIb", "IIc", "III", "IIIa", "IIIb", "IV", "IVc", "IVu", "sV", "sVb", "V", "Va", "Vad", "Vao", "Vb", "Vbd", "Vbo", "VI", "VId", "VII", "VIId", "VIII", "VIIId", "VIIIo", "VIIo", "VIo".
OBIC no longer supports B_GWL_CLASS value "-". For fields with groundwater class "-", the user is advised to use expert judgment on what the most suitable groundwater class is. Fields with "-" are typically found in locations with very variable or very deep groundwater levels such as flood plains or hills.
In the table nleach_table, column B_GT is renamed B_GWL_CLASS for consistency. The values in this column have also been modified to no longer have the prefix "Gt" to align with the rest of the package.
In the table waterstress.obic, column gt is renamed B_GWL_CLASS for consistency. The values in this column have also been modified to no longer have the prefix "Gt" to align with the rest of the package.

Added

The table waterstress.obic now supports more groundwaterclasses. Classes such as IIIb are now included in waterstress.obic$B_GWL_CLASS. The new classes with prefixes and suffixes have the same values as rows with the same roman numeral. So, with the same cropname and soilunit, III and IIIb have the same values for the different stresses.
additional B_GWL_CLASS values to nleach_table ("Ia", "Ic", "IIa", "IIc", "IIIa", "IVu", "IVc", "Va", "Vao", "Vad", "Vbo", "Vbd", "sV", "sVb", "VIo", "VId", "VIIo", "VIId", "VIIIo", "VIIId")

Removed

function format_gwt(). OBIC now supports groundwater classes with prefixes and suffixes. For fields with groundwater class "-", the user is advised to use expert judgment on what the most suitable groundwater class is. Fields with "-" are typically found in locations with very variable or very deep groundwater levels such as flood plains or hills.

OBIC 2025-05-20

Fixed

Fixes missing nf_* values in crops.obic [OBI-31]

OBIC 2024-08-12

Added

Adds the new cultivations from 2024 [PL-33]

OBIC 2024-02-09

Fixed

Fixes error in validation of B_LU_BRP by enabling calculations with brp codes of 2023 [OBI-28]
Fixes classification of grasland met/zonder herinzaai in crops.obic

Changed

B_LU_WATERSTRESS_OBIC of 265 (grasland blijvend), 331, and 3718 from 'grasland met herinzaai' to 'grasland zonder herinzaai' in crops.obic

Removed

Removes urls to bodemconsult.nl due to invalid SSL certificate, which is not accepted by CRAN

OBIC 2023-11-24

Fixed

Fixes calculation of N surplus used for I_H_NGW and I_H_NSW

OBIC 2023-10-16

Added

Add calc_permeability for calculating top soil permeability
Add ind_permeability for calculating the index for top soil permeability
Add variable leach_to to calc_n_efficiency and ind_n_efficiency to calculate and evaluate leaching to ground water and surface water
Add vignette obic_water_functions, describing the functions that evaluates the effect of soil quality on groundwater quality

Changed

Updated N use norms for onions
Update calc_nleach by soil and land use dependent default n supply, issue #154
Update calculations in the functions calc_pesticide_leaching, ind_pesticide_leaching, calc_psp, ind_psp, ind_gw_recharge,calc_n_efficiency and ind_n_efficiency
Add soil type and land use dependent NLV estimate in calc_nleach
In the input for ind_gw_recharge the variables B_LU_BRP, D_WRI_K, and B_GWL_CLASS are added, and D_WRI_WHC is removed
In calc_n_efficiency, D_NLV is removed from the input variables

Fixed

Fixes plotting of regime curve in workability vignette #149
Extremely high EOS values for some cultivations fixing #162 & #134
Updated bibliography of packages in vignettes
N use norm for 1935 (maiskolfsilage)
N use norms of 1926 and 1927 (agrarisch natuurmengsel and overige akkerbouwgewassen), increased to match "Akkerbouwgewassen, overig" (RVO, 2022)

Added

CITATION file and additional author data in the package DESCRIPTION

OBIC 2023-08-29

Added

Adds function obic_recommendations_bkp for determining management recommendations to improve soil quality

Fixed

Fixes error in formatting of B_AER_CBS for LG01 and LG02 in format_aer [OBI-20]

OBIC 2023-03-28

Fixed

Added missing values in nf_ columns in crops.obic

OBIC 2023-03-21

Fixed

Update crops.obic for missing b_lu_brp codes

OBIC 2023-03-03

Added

add obic_farm to assess soil quality on farm level (plus unit tests), #OBI-8
total farm score farm_obi_score as output reflecting the percentage of fields in the highest class for the OBI score, #OBI-8

Changed

output handling in obic_field is updated to have more flexibility and avoid undesired calculations

OBIC 2023-02-17

Fixed

Fixes to generate clearer error message when incorrect B_LU_BRP is supplied.

OBIC 2023-01-11

Fixed

Fixes calculation of field capacity at calc_waterretention

Fixed

Fixes plotting of regime curve in workabilty vignette #149

Changed

Update the GitHub Actions to the most recent version
Update RoxygenNote to v7.2.3

OBIC 2022-03-26

Changed

The function ind_sulpher is renamed to ind_sulfur in documentation

Added

all functions are extended with examples and return

Changed

standardize output variables of pedotransfer parameters Wosten

Fixed

Fixes many spelling errors in the documentation
Set title in decription to title case
Fix links to external websites
Fix duplicated indicator in recom.obic (in dev/ppr_maatregel.r), issue #164
Fix setorder after merge in calc_n_effieciency
Fix setorder after merge in calc_som_balance

Removed

Removes /docs as the documentation website is now automatically generated by GitHub Actions

Deprecated

The function ind_sulpher is deprecated due to renaming

OBIC 2022-01-11

Added

Add ppr_bouwplan_tables.R in dev/scripts
Add merge_nema_tables.R in dev/scripts
Add ppr_crops_crumbleability.R in dev/scripts
Add arguments B_GWL_GHG, B_GWL_GLG and B_Z_TWO to obic_field and obic_field_dt
Activate calc_workability
Add calc_makkink to add makkink factors to crop table
Add calc_psp to estimate precipitation surplus
Add ind_nematodes and ind_nematodes_list to estimate the index for nematode risks
Add ind_gw_recharge to estimate the groundwater recharge index
Add calc_n_efficiency and ind_n_efficiency to estimate N efficiency
Add calc_pesticide_leaching and ind_pesticide_leaching to evaluate retention of pesticides in topsoil
Add check to ppr_weight_obic to check if all indicators in weight.obic occur in column_descriptions_obic
Add vignette obic_workability, describing how workability is calculated and affected by its input variables
Add vignette obic_introduction as a short tutorial describing the OBIC principles
Add vignette obic_score_aggregation to illustrate the aggregation principles used
Add table weather.obic with monthly mean precipitation, temperature and evaporation
Add table crops.makkink with mean Makkink factors per crop type
Add table nema.crop.rot.obic added with crop sensitivity for nematodes
Add table nema.obic with threshold values per species
Add GitHub Action to run R-CMD-Check for changes on master and development
Add coverage of unit tests

Changed

Update documentation for workability
Update weight.obic for workability
Update column_descriptions_obic.Rdata
Update documentation for nematodes
Update calc_workability
Rename B_Z_TWO to B_GWL_ZCRIT
Improve function description of ind_workability
Increase required days post GLG for maize on sand or loess to match October 1
Increase required days post GLG for maize on other soils to match October 20
season.obic can now be merged on both landuse and soiltype
Update binnenveld with BodemSchat data (via OBIC-helpers)
obic_field can be used for multiple fields with field-ID

Removed

Removes A_COM_FR and A_CACO3_IF from input as they were not used #145

Fixed

Error in grass_age: age was incorrectly estimated for multiple fields
Removed negative values from season.obic
Ensured total_days >= req_days_pre_glg + req_days_post_glg in season.obic
Root depth was incorrectly assigned for maize and nature
Fix the format of NEWS.md so that it is shown on the package website
Remove the prefixes and suffixed of B_GWL_CLASS

OBIC 2021-09-27

Added

Check on column names in obic_field_dt
tests on obic_field_dt

Fixed

Fixed check on required column names in obic_field_dt

OBIC 2021-09-16

Added

Adds unit test for obic_field

Fixed

Fixes ascii signs issues

OBIC 2021-05-20

Added

ind_man_ess.R and tests are added for update aggregated management scores, issue #131

Changed

obic_field() makes use of ind_man_ess

Fixed

check B_GWL_CLASS in calc_waterstressindex(), issue #129

OBIC 2021-05-05

Added

management.obic table added to link management measures to ecosystem services
calc_man_ess.R and tests are added to estimate grouped impact of management on ecosystem servcices, issue #125

Changed

I_M_* and I_*_BCS indicators for management measures and BCS are removed, issue #126
values -999 are replaced by NA
column_descriptions_obic.Rdata is updated
weight.obic is updated

OBIC 2021-04-28

Added

column crops_season to crops.obic
column scientific_names to crops.obic
preparation crops.obic in dev
function format_gwt to reformat input for groundwater table
function format_soilcompaction to reformat input for subsoil compaction
season.obic added as data.table
new function and tests for workability indicator
nema.obic added as data.table
new function and tests for nematode indicator
preparation nema.obic in dev
preparation season.obic in dev
obic_field is added to run obic score for one field
ppr_column_description plus column_descriptions_obic.Rdata
ppr_maatregel plus recom_obic.Rdata
ppr_weights plus weights.obic
I_P_DS and I_P_WS added (drought and wetness stress separately)
add_management added to estimate default values for measures when not given
set of eight I_M_XX indicators for measures are added
set of nine I_X_BCS indicators are added (optional)
new M_codes added: M_LIME, M_NONINVTILL, M_SSPM, M_SOLIDMANURE,M_STRAWRESIDUE, M_MECHWEEDS, M_PESTICIDES_DST, issue #107
obic_field_dt to run obic_field() for a data.table input

Changed

calculation PBI updated for grassland
PBI input is flexible for both grassland and arable
calculation SLV updated
update element_names for A_P_CC, A_P_AL in phosphate_availability.R
update element_names for A_S_RT, A_SOM_LOI, B_AER_CBS, B_SOILTYPE_AGR in sulfur.R
update element_names for B_GWL_CLASS in wateravailability.R
update element_names for B_GWL_CLASS and B_AER_CBS in nretention.R
correct weighing for S_C_A
all element names are updated to English ones
weighing for score calculated is changed into a more generic approach
structure for running obi is changed into one function
weights.obic is extended and used to distinguish for relevant/non-relevant indicators
grass_age function is updated: count actual years
BCS is optional input, and when given it overwrite risk indicators compaction / aggregate stability
M codes for no advice, issue #62
directory dev is updated and cleaned, issue #104
lower and upper limits for soil properties updated
allow unknown B_HELP_WENR in checkmate water_availability, issue 65
very low Mg indicator values for maize are changed, plus tests updated
very low Mg indicator values for grassland on clay and peat, issue 84
evaluation and calculation for Cu are updated

Fixed

setorder in winderodibility

OBIC 2020-09-02

Changed

The water holding capacity is now between 0 and 1 (as theta should be) and uses new evaluation function #67
Lower range of D_NLV is set to -30
Upper range of D_MG is set to 1000
Range of D_P_DU is set between 0 and 1

Fixed

Fixed the use of B_LG_CBS at sulfur
ID can now also be character and does not have to be numeric #66

OBIC 2020-01-16

Added

Adds two other pedotransfer functions (PTFs) to calculate water retention parameters #53

Changed

Optimal pH values of grassland are now the middle value of the class good #55
pF of field capacity is changed from 2.2 to 2.0 #53
Bulk density in the default PTF is now aggregated into 1 continuous function #53
Parameters of evaluation for PAW are adjusted #53
Parameters for the evaluation of sealing are adjusted #57
Changes the formula to calculate nitrogen leaching and run-off #58
Parameters for the evaluation of nretention are adjusted #58
parameters and funs for CEC are updated and split for soil fertility and aggregate stability #59
Parameters for the evaluation of Cu availability are adjusted #59
potassium index is multiplied so that the evaluation is equal for grass and maize #60

Fixed

Improved the function for crumbleability to match the fact sheet #54 #56
Fix error in calc_potassium_availability #59

OBIC 2019-12-13

Added

Adds the evaluation of measures #37
Adds giving recommendations based on the OBI score #37
A relative score per reference group is added #31
Adds the leaching of nitrogen to surface water and groundwater #17
Adds a table with the description of the columns and a vignette about it #46
Adds scoring for environmental performance #31

Changed

Update of crumbeability groups in crops.obic
Maximum value of A_MN_CC is increased from 30000 to 250000
The code for evaluating in ind_crumbeability is simplified
M_M10 user input changed in D_CP_RUST input, plus comments added #29
new table with weighing factors included 'weight.obic' #32
weighing factors updated in obic_indicators.R #32
Improved the zinc indicator function #39
The evaluation function for sulfur on maize and grass is updated #40
The management function is improved, especially for maize #38
The maximum score of ind_management is adjusted #38
The parameter values for sulfur on arable land is adjusted #41
The optimal pH for grassland depends now on organic matter content and presence of clover #42
The score aggregation is now 60% average of last 4 years and 40% of older years #31
The maximum value for D_CR is limited to 10 #47
The parameters for the evaluation for I_C_K is set to the same as grassland #51
The evaluation for I_C_N is now split into grassland and arable land #50
Set lifecycle status to maturing
The evaluation of I_C_MG is adjusted according to fact sheet

Fixed

Preprocessing, indicators and scores make use of internal copy of the table now rather than referencing to an object outside the scope of the function
Fixed the drought stress, wetness stress and water stress values for GtI in waterstress.obic
For grasslands on peat pr clay, the D_MG is now scaled #51
Limit D_SLV between -30 and 250

OBIC 2019-10-22

Changed

The upper limit for D_BCS is increased from 40 to 50
Switch on crumbleability
For calc_phosphate_availability the category arable is added for the crop categories
Changed evaluation of sulfur for arable fields #26

Fixed

Fixed typo if mais in ind_managment
Fixed test for winderodibility
Use the correct correction factor in calc_sealing_risk #19
Fix for calculating I_P_CEC #24
Fix for calculating difficult values in calc_sombalance #25
Fix for calc_sbal_arable where combinations of soil type and region that do not exist in table 6.2 of Handboek Bodem & Bemesting gave a NA #26
Fix for calc_bcs where a value of 1 is given instead of 0 for bcs_om #28

OBIC 2019-08-02

Added

Adds index and evaluation of the BodemConditieScore
Adds potassium to main functions
Adds a random recommendation to the output

Changed

The upper limit for A_MN_CC is increased from 20000 to 30000
The upper limit for A_CA_CEC is increased from 100 to 400

Fixed

The indicator of pH had the wrong direction
Removed the minus sign before ind_zinc
The function calc_potassium_availability contained a wrong column name for A_PH_CC
Some unknown situations at calc_potassium_availability have now the same values as comparable situations. This should be looked at later

Added

Adds index and evaluation of waterretention parameters
Adds index and evaluation of water related yield stress
Adds index and evaluation of metals (Zn and Cu)
Adds index and evaluation of microbial activity (PMN)
Adds index and evaluation of CEC for soil fertility and structure
Adds waterstress.obic table with information of HELP-tables

Changed

Change crops.obic with crop category related to water stress

OBIC 2019-08-01

Added

Adds index and evaluation of K-availability

OBIC 2019-07-31

Added

Adds crop classification (sensitivity to P, K and S supply)
Adds soil organic matter balance (simple one)
Adds risk for soil compaction (following risk map Van den Akker, 2013)
Adds index and evaluation of Mg-availability
Adds index and evaluation of S-availability (evaluation function need still to be parameterized)
Adds index and evaluation of winderodibility
Adds index and evaluation of soil strategic management (following Label Duurzaam Bodembeheer)
Adds columns crop_eos and crop_eos_residue in crops.obic

OBIC 2019-07-26

Added

The existing functions for pH, P, N, crumbleability, sealing and resistance are integrated into obic()

Changed

The column name brp is changed to B_LU_BRP

OBIC 2019-07-24

Added

Adds main function that wraps all the functions needed to calculated the OBI score and recommendations
Adds documentation website for package using pkgdown #3

OBIC 2019-07-12

Added

Adds evaluation of pH #1
Adds evaluation of nitrogen #2

OBIC 2019-07-08

First version of OBIC