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
Milwaukee Air and Water Show Milwaukee Air and Water Show The Milwaukee Air & Water Show is an air show held on the shores of Lake Michigan in Milwaukee, Wisconsin, in the United States. It is billed as "the largest two-day event in Wisconsin," with an attendance of almost 1,000,000 people in 2012. A predecessor to the airshow was first held at Festa Italiana in 2002 to celebrate its 25th anniversary. TCF Bank joined as the title sponsor and the Milwaukee Air & Water Show staged its first event at Veterans Park in 2004. In 2005 the Navy's Blue Angels returned to Milwaukee after six