Fig. 4.

The impact of air [CO₂] and irrigation on dynamics of the proportion of preserved leaves on four axes orders of Coffea arabica, observed from the end of July 2015 to the beginning of July 2016, during active and reduced seasonal growth. Plants were grown under: (A) elevated [CO₂] with irrigation, (B) elevated [CO₂] and rainfed conditions, (C) actual [CO₂] with irrigation and (D) actual [CO₂] and rainfed conditions.