Pak Choi Handbook

Computer Technology
Computer technology is an integral part in the production of hydroponic pak choi. Different sensors are used to monitor greenhouse environment parameters. These parameters include temperature of greenhouse air and nutrient solution, relative humidity and carbon dioxide concentration of greenhouse air, light intensities from both sunlight and supplemental lighting, pH, dissolved oxygen (DO), and Electrical Conductivity (EC) of the nutrient solution.

Environmental Parameters

Temperature
Biological Significance	Sensor	Set-Points
Relative Humidity
Biological Significance	Sensor	Set-Points
Carbon Dioxide
Biological Significance	Sensor	Set-Points
Light
Biological Significance	Sensor	Set-Points
Dissolved Oxygen (DO)
Biological Significance	Sensor	Set-Points
pH
Biological Significance	Sensor	Set-Points
Electrical Conductivity (EC)
Biological Significance	Sensor	Set-Points