Foliar feeding with the lights off?

L

letbet420

Member
The best time to foliar is when the plants stomata is most open. The Stomata is most open ONE HOUR AFTER LIGHTS TURN OFF. The benefits of foliar will best be seen in Veg and the first two weeks of flower. Also the higher the humidity. The longer the spray will stay on the leafs which means better penetration. Better penetration means better absorption Thur the stomata.
 
L

lithosphere

New Member
kinda dead post but trying to learn more, why would the stomata be most open an hour after lights out? from what I understand the stomata open during lights on and close during lights off, while open they allow nutrients to pass through and allow heat and unfortunately moisture to escape. Higher intensity of light and correct moisture levels will allow the stomata to open to their fullest, I was curious if there was a function I am missing during dark phases? also the only arguments I have seen against daytime foliar spraying is possible light burn and damage to bulbs, both of those things can easily be mitigated it seems. does spraying the top of leaves offer the same absorption rates day or night and the underside of leaves more effective during lights on?
 
westbmorekush

westbmorekush

Well-Known Member
billy4479 said:
So im trying to dig up some data on the subject and i found this ,,,,,,,,,,,,,,,,,,,,,,,,,,,,Dr. H.B. Tukey, renowned plant researcher and head of the Michigan State University (MSU) Department of Horticulture in the 1950s, working with research colleague S.H. Wittwer at MSU, first proved conclusively that foliar feeding of plant nutrients really works. Researching possible peaceful uses of atomic energy in agriculture, they used radioactive phosphorus and radiopotassium to spray plants, then measured with a Geiger counter the absorption, movement, and utilization of these and other nutrients within plants. They found plant nutrients moved at the rate of about one foot per hour to all parts of the plants."[2]
Foliar feeding is considered especially useful for introducing trace elements, or for "emergency" feeding of plants which are found to have a specific shortage. But in some cases, with tomatoes, for example, it is believed that foliar feeding during flower set causes a dramatic increase in fruit production.

reminds me of that simpsons epiosde with the tamaco
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fartoblue

fartoblue

Well-Known Member
Old thread I know but it seems the OP has still not had his question answered as everyone is saying different things.

Anyone know the real answer? I have searched the web and everyone gives differing advice.

My lights in veg come on at 4am so not an ideal time to get out of bed and start spraying.
 
Herb & Suds

Herb & Suds

Well-Known Member
fartoblue said:
Old thread I know but it seems the OP has still not had his question answered as everyone is saying different things.

Anyone know the real answer? I have searched the web and everyone gives differing advice.

My lights in veg come on at 4am so not an ideal time to get out of bed and start spraying.
Click to expand...
I have been foliar feeding for years and always do it at lights out and leave fans on 24/7
 
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