Isn’t that their food? Wouldn’t this be like taking away a banquet and replacing it with gruel?
Foliar spraying of water, dissolved nutrients and chemicals on plant leaves has been used for over 60 years by millions of indoor and outdoor growers. To date, outdoor growers have not had any way to enhance plant CO2 gas uptake for faster growth.
https://apnews.com/0e7847d767f11575bc425c19663a3678