Fig. 2
From: Effect of vapour pressure deficit on gas exchange of field-grown cotton
Variation in a stomatal conductance (gs), b photosynthesis (Asat), and c air temperature (Tair) for sowing time and water treatments; and d the frequency of gas exchange measurements in different VPDL environments. Sowing dates were 5th October 2011 (S1), 9th November 2011 (S2) and 30th November 2011 (S3), respectively. Water treatments were early limited water (ES, green), late limited water (LS, purple) and non-stressed (NS, orange), respectively