A composition for being sprayed on the foliage of a plant, which is suspended in water so as to apply to the foliage of the plant by using a paint sprayer or the like, which provides the effects that the photodecomposition of water on the surface of the foliage is advanced, and thereby carbon dioxide assimilation in the plant can be expedited, and an oxygen free radical as produced in a process of a photodecomposition reaction of water can be used for a lipid peroxidation reaction in a plant cell membrane, and a bactericide, an insecticide, a growth regulator and/or a herbicide which are excessively left on the surface of the foliage can be decomposed; and a method of using the same can be provided. A composition for being sprayed on the foliage of a plant, comprising at least one semiconductor photocatalyst(s) as an active ingredient, wherein, if necessary, further comprises at least one carbonate(s) and/or hydrogencarbonate(s) is used. The composition is sprayed on the above-ground part of the plant.
An environmentally safe selective herbicide is provided that includes at least one metal component and at least one chelating agent. The metal component can have a variety of forms, but is preferably in the form of a metal salt, a metal chelate, or combinations thereof. The chelating agent can also have a variety of forms, but is preferably in the form of a metal chelate, a salt, an acid, or combinations thereof. Methods of use are also provided.
