Abstract: The present invention relates to plant growth regulators and processes for regulating plant growth, and more particularly, relates to a technique to regulate the growth of a plant using a substance which is friendly to the global environment. A growth regulator of a plant comprising NaHCO3 and/or KHCO3 as a principal active ingredient is provided.

Abstract: The present invention relates to growth regulators of a plant and processes for regulating the same, and more particularly, relates to a technique to regulate the growth of a plant using a substance which is friendly to the global environment. A growth regulator of a plant comprising NaHCO3 and/or KHCO3 as a principal active ingredient is provided.

Abstract: Sodium hydrogen carbonate powder and/or an aqueous dispersion or solution of sodium hydrogen carbonate is sprayed to weeds by gravity Drop or low-pressure spraying, or blasted to weeds together with compressed air at an ejection pressure (gauge pressure) of 1-10 kgf/cm2, using a high-pressure dry-blasting apparatus.

Abstract: Sodium hydrogen carbonate powder and/or an aqueous dispersion or solution of sodium hydrogen carbonate is sprayed to weeds by gravity Drop or low-pressure spraying, or blasted to weeds together with compressed air at an ejection pressure (gauge pressure) of 1-10 kgf/cm2, using a high-pressure dry-blasting apparatus.

Abstract: A method of artificially forming patina on a copper product surface comprising the steps of blowing granular sodium hydrogen carbonate powder onto the copper product surface to clean and roughen it; wetting the surface with water; and depositing granular sodium hydrogen carbonate powder onto the wet copper surface; thereby forming patina on the copper surface. The step of wetting the copper surface and the step of depositing granular sodium hydrogen carbonate powder onto the wet copper surface are preferably repeated several times. The copper surface is preferably covered with porous sheets during or after the above steps.