where Ca and Ci are the atmospheric and sub-stomatal partial pressures of CO2 respectively. The rate of evaporation from a leaf can be determined using a photosynthesis system. These scientific instruments measure the amount of water vapour leaving the leaf and the vapor pressure of the ambient air. Photosynthetic systems may calculate water use efficiency (A/E), g, intrinsic water use efficiency (A/g), and Ci. These scientific instruments are commonly used by plant physiologists to measure CO2 uptake and thus measure photosynthetic rate.
where Ca and Ci are the atmospheric and sub-stomatal partial pressures of CO2 respectively. The rate of evaporation from a leaf can be determined using a photosynthesis system. These scientific instruments measure the amount of water vapour leaving the leaf and the vapor pressure of the ambient air Photosynthetic systems may calculate water use efficiency (A/E) g, intrinsic water use efficiency (A/g), and Ci. These scientific instruments are commonly used by plant physiologists to measure CO2 uptake and thus measure photosynthetic rate