Farm
From librae wiki
Farm is an asset that produces food. 1 Farm produces 1 Food in one week. This is a constant, other parameters, such as construction cost and maintenance change depending on circumstances.
Construction cost
Fuel: 50 + 50 * surface_bio_quality_offset + 10 * atmo_quality_offset + 10 * effective_cosmic_ray_intensity
Maintenance cost
Fuel: 0.1 + 0.125 * atmosphere_bio_quality_offset + 2 * surface_bio_quality_offset
Workforce: 0.25