Method and rigour
Check command of agricultural LCA and GHG accounting: IPCC Tier 2 emission factors, Cool Farm Tool or SimaPro, functional units per tonne or hectare, and yield gap methods.
Evidence to listen for
- Follows and can justify an established methodology
- Understands contamination, bias, and chain of custody as they apply to the field
- Knows the limits of their techniques and says so
- Documents procedure so results are reproducible and defensible
Five-point scoring guide
Careless method; unaware of contamination, bias, or procedural integrity.
Knows procedures but applies them inconsistently; gaps in documentation.
Sound standard practice; less certain outside familiar techniques.
Rigorous and well documented; understands the limits of each method.
Names the standards used (GHG Protocol Land Sector, PAS 2050), explains boundary choices, and defends allocation decisions between crop and residue.