Can something as elementary as watering your industrial plant be improved upon ? Is there a way to make unnecessary some money with a more effective method of lachrymation ? “ Yes , and by harnessing what the plant wants to tell you , namely the plant transpiration ” , says Daphne Brogdon from Micro Grow Greenhouse Systems .
“ proportional humidness is the most common way growers express the air ’s saturation with water , however it is not the serious measurement to accurately promise plant transpiration or water loss . Relative humidness refers to the amount of pee in the air , not the amount of piss on the plant . As an model , New Orleans in the Summer can make a person droop , while it is just ripe for the orchids . So a more precise way to express the water loss from a leafage is by vapor insistency deficit ( VPD ) . ”
Two professors from The University of Michigan put it this manner : “ VPD is the difference between the amount of moisture in the air and how much moisture the line could potentially hold up when it ’s saturated . It ’s often measured in pound per square column inch ( psi ) or kilopascal ( kPa ) . A high VPD ( peachy than 1.0 kPa ) means that the air can still hold a magnanimous amount of piss . Therefore , there ’s a fairly large gradient between plants ( almost saturate with urine ) and the air , enabling the plants to transpire and , over fourth dimension , wry out . A dispirited VPD indicate the air is near saturation . A VPD of zero means the aviation is 100 % saturated and thus plant can not transpirate efficaciously .
There are a few irrigation organisation that utilize VPD . One of them is Micro Grow ’s Water Pro . The canonic arrangement is a controller with twelve sovereign Stations of the Cross , one VPD sensor that supervise air temperature , relative humidity and it also has a sensor that simulates the plants leaf temperature . When using VPD , the Water Pro always monitors ‘ all ’ environmental change that palisade the plants . As these change take post , it will automatically regulate the amount of water delivered to the plants .
“ The Water Pro is a standalone system , which can be expanded to add twelve output with the summation of a Water Pro Expansion Unit . you could , also , add an additional VPD Sensor which will give you the ability to independently monitor two zones from a individual Water Pro . The Water Pro can be connect to a estimator and it can be used with our optional Growlink PC Software for sensor data point logging and removed control operations . ”
For more selective information : Micro Grow42065 Zevo Drive , Temecula CA 92590 USA(951 ) - 296 - 3340[email protected]www.microgrow.com
