variable	description
1000_part_weight	The weight of 1000 seeds
AL_K	Potassium (K) content in soil, measured by extraction with ammonium acetate lactate (AL)
AL_P	Phosphorus (P) content in soil, measured by extraction with ammonium acetate lactate (AL)
bulk_density	The bulk density of seeds
density_harvest	The percentage of gound covered by the crop by harvest
density_spring	The percentage of gound covered by the crop in spring 
gluten	The glutent content of a grain
HCl_K	Potassium (K) content in soil, measured by extraction with hydrochloric acid (HCl)
HCl_P	Phosphorus (P) content in soil, measured by extraction with hydrochloric acid (HCl)
lodging	The permanent displacement of crop stems from their vertical position as a result of stem buckling and/or root displacement
org_C	Organic carbon (C) content
part_grass	The percentage of grass coverage 
part_legume	The percentage of legume coverage
part_other	The percentage of coverage by plant other than grass or legume
pH_H2O	Soil pH measured in ultrapure water in 1:5 ratio (soil:solution, volume:volume)
protein	Amount of protein in the given component 
sugar_content	Percentage of sugar in sugar beets
sugar_yield	Amount of sugar extracted from sugar beets
tot_C	Total carbon (C) content
tot_K	Total potassium (K) content
tot_N	Total nitrogen (N) content
tot_P	Total phosphorus (P) content
yield	Total dry mass of the given component