OBIC (version 4.2.3)

calc_management: Calculate the 'performance' of sustainable soil management

Description

This function evaluates the contribution of sustainable soil management following the Label Sustainable Soil Management.

Usage

calc_management(
  A_SOM_LOI,
  B_LU_BRP,
  B_SOILTYPE_AGR,
  B_GWL_CLASS,
  D_SOM_BAL,
  D_CP_GRASS,
  D_CP_POTATO,
  D_CP_RUST,
  D_CP_RUSTDEEP,
  D_GA,
  M_COMPOST,
  M_GREEN,
  M_NONBARE,
  M_EARLYCROP,
  M_SLEEPHOSE,
  M_DRAIN,
  M_DITCH,
  M_UNDERSEED,
  M_LIME,
  M_NONINVTILL,
  M_SSPM,
  M_SOLIDMANURE,
  M_STRAWRESIDUE,
  M_MECHWEEDS,
  M_PESTICIDES_DST
)

Value

The evaluated soil management score according to the Label Sustainable Soil Management. A nmumeric value.

Arguments

A_SOM_LOI

(numeric) The percentage organic matter in the soil (%)

B_LU_BRP

(numeric) The crop code from the BRP

B_SOILTYPE_AGR

(character) The agricultural type of soil

B_GWL_CLASS

(character) The groundwater table class

D_SOM_BAL

(numeric) The organic matter balance of the soil (in kg EOS per ha)

D_CP_GRASS

(numeric) The fraction grassland in crop rotation

D_CP_POTATO

(numeric) The fraction potato crops in crop rotation

D_CP_RUST

(numeric) The fraction rustgewassen in crop rotation

D_CP_RUSTDEEP

(numeric) The fraction diepe rustgewassen in crop rotation (-)

D_GA

(numeric) The age of the grassland (years)

M_COMPOST

(numeric) The frequency that compost is applied (optional, every x years)

M_GREEN

(boolean) measure. are catch crops sown after main crop (option: yes or no)

M_NONBARE

(boolean) measure. is parcel for 80 percent of the year cultivated and 'green' (option: yes or no)

M_EARLYCROP

(boolean) measure. use of early crop varieties to avoid late harvesting (option: yes or no)

M_SLEEPHOSE

(boolean) measure. is sleepslangbemester used for slurry application (option: yes or no)

M_DRAIN

(boolean) measure. are under water drains installed in peaty soils (option: yes or no)

M_DITCH

(boolean) measure. are ditched maintained carefully and slib applied on the land (option: yes or no)

M_UNDERSEED

(boolean) measure. is maize grown with grass underseeded (option: yes or no)

M_LIME

(boolean) measure. Has field been limed in last three years (option: yes or no)

M_NONINVTILL

(boolean) measure. Non inversion tillage (option: yes or no)

M_SSPM

(boolean) measure. Soil Structure Protection Measures, such as fixed driving lines, low pressure tires, and light weighted machinery (option: yes or no)

M_SOLIDMANURE

(boolean) measure. Use of solid manure (option: yes or no)

M_STRAWRESIDUE

(boolean) measure. Application of straw residues (option: yes or no)

M_MECHWEEDS

(boolean) measure. Use of mechanical weed protection (option: yes or no)

M_PESTICIDES_DST

(boolean) measure. Use of DST for pesticides (option: yes or no)

Examples

calc_management(A_SOM_LOI = 4.5,B_LU_BRP = 3732, B_SOILTYPE_AGR = 'dekzand',
B_GWL_CLASS = 'IV',D_SOM_BAL = 1115,D_CP_GRASS = 0.2,D_CP_POTATO = 0.5,
D_CP_RUST = 0.3,D_CP_RUSTDEEP = 0.2,D_GA = 0,M_COMPOST = rep(25,1),
M_GREEN = TRUE, M_NONBARE = TRUE, M_EARLYCROP = TRUE, M_SLEEPHOSE = TRUE, 
M_DRAIN = TRUE, M_DITCH = TRUE, M_UNDERSEED = TRUE,M_LIME = TRUE, 
M_NONINVTILL = TRUE, M_SSPM = TRUE, M_SOLIDMANURE = TRUE,M_STRAWRESIDUE = TRUE,
M_MECHWEEDS = TRUE,M_PESTICIDES_DST = TRUE)