Hey guys
Has anyone out there checked the temperature of their canopy / leaves using an infrared temp gun? I'm curious in the difference of the leaf surface temperature between LED, and HID lighting, in relation to the ambient air temp.
Also does anyone out there know the "optimal" leaf surface temperature? The actual temperature of the plant itself? Not alot of information covering the subject. One source says that with HID lighting and an ambient air temp of 75, the leaf surface temperature is 85'. That to me, would mean that a leaf surface temperature of 85 is ideal, people have been using HID's for along time and this is the temperature they get the best results with. The temperature of the plant, effects the metabolic rate, which effects the rate of growth.. So to me this is a pretty important piece of information, and some data and input on the subject would be great.
I have an LED setup, and with my infrared gun I get a reading of 78degree's with an ambient air temperature of 79. My Led light has a few infrared diodes but still doesn't put out much radiant heat, when compared to HID lighting. So I get a 1degree temperature decrease of the leaf when compared to the ambient temp. Humidity also plays a role, the lower the humidity, the higher the rate of transpiration, and that leads to evaporation and cools the leaf. My RH is 43% Anyone else have a temp gun to post some results?
Thanks MP
Has anyone out there checked the temperature of their canopy / leaves using an infrared temp gun? I'm curious in the difference of the leaf surface temperature between LED, and HID lighting, in relation to the ambient air temp.
Also does anyone out there know the "optimal" leaf surface temperature? The actual temperature of the plant itself? Not alot of information covering the subject. One source says that with HID lighting and an ambient air temp of 75, the leaf surface temperature is 85'. That to me, would mean that a leaf surface temperature of 85 is ideal, people have been using HID's for along time and this is the temperature they get the best results with. The temperature of the plant, effects the metabolic rate, which effects the rate of growth.. So to me this is a pretty important piece of information, and some data and input on the subject would be great.
I have an LED setup, and with my infrared gun I get a reading of 78degree's with an ambient air temperature of 79. My Led light has a few infrared diodes but still doesn't put out much radiant heat, when compared to HID lighting. So I get a 1degree temperature decrease of the leaf when compared to the ambient temp. Humidity also plays a role, the lower the humidity, the higher the rate of transpiration, and that leads to evaporation and cools the leaf. My RH is 43% Anyone else have a temp gun to post some results?
Thanks MP