Kinetic tensiometric dependences and isotherms of wetting leaves of the Prime potato were obtained for aqueous solutions and submicron dispersions of nonmicelle-forming surfactants (Tween 85, Brij L4, and Silwet L-77). A technique has been developed for determining the rate of penetration of the studied liquids into potato leaves. The penetration rate increases with increasing surfactant concentration. The permeability and wetting efficiency increase in the following row: Tween 85