Table 2 Summary metrics by crop (per feddan).

From: Medicinal and aromatic plants as climate-smart crops: case studies on Pelargonium graveolens and Viola odorata under Egyptian conditions

Crop

O2 Production

(m³)

CO2 Absorption

(kg)

Net CO2 Footprint

(kg/feddan)

Oil Yield

(kg/feddan)

CO2 per kg Oil

(kg CO₂ eq/kg)

CUE*

Geranium

54,324

155,632

– 375.00

20.00

– 18.75

1.09

Violet

11,148

12,701

15971.65

31.50

507.04

0.43

  1. *CUE = Carbon Use Efficiency (CO₂ absorption / total emissions ratio). Values > 1.0 indicate net carbon sink; values < 1.0 indicate net carbon source.
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