Traditional and modern harvest index values per crop group, and the
derived HI gap factor that quantifies how much more residue is produced
per unit product under traditional versus modern varieties. Used by
calculate_crop_residues() to compute crop-specific
HI_correction_factor from Modern_variety_adoption shares.
Format
A data frame with columns:
- crop_group
Crop group name (8 groups).
- HI_traditional
Typical harvest index of traditional/landrace varieties (dimensionless, 0-1).
- HI_modern
Typical harvest index of modern/improved varieties (dimensionless, 0-1).
- HI_gap_factor
Ratio of residue:product under traditional versus modern HI: ((1-HI_trad)/HI_trad) / ((1-HI_mod)/HI_mod).
- Source
Literature source references.