Vapour-pressure deficit the plant may dry out and die. For this reason the ideal range for VPD in a greenhouse is from 0.45 kPa to 1.25 kPa, ideally sitting at around 0.85 kPa. As a general rule, most plants grow well at VPDs of between 0.8 and 0.95 kPa. In ecology, it is the difference between the actual water vapour pressure and the saturation water vapour pressure at a particular temperature. Unlike relative humidity, vapour-pressure deficit has a simple nearly straight-line relationship to the rate of evapotranspiration and other measures of evaporation. To compute the VPD, we need the ambient (greenhouse) air
Asian water monitor crocodile’, ‘little crocodile’) and even sometimes called "ta kuat" (), which in fact refers to a Bengal monitor ("V. bengalensis"), a different species. In Indonesian and Malay, the water monitor is called "biawak air", to differentiate it from the "biawak pasir" ("sand lizard"), "Leiolepis belliana". Asian water monitor The Asian water monitor ("Varanus salvator"), also called common water monitor, is a large varanid lizard native to South and Southeast Asia. It is one of the most common monitor lizards in Asia, ranging from Sri Lanka and coastal northeast India to Indochina, Malay Peninsula, and Indonesian islands where it lives close