The governing body of any city, when it appears that there is or is likely to be a general infection or infestation of the trees or shrubs within the city by tree or plant disease or insect pest or larvae resulting in damage to or the death of many trees or shrubs, may provide such preventive measures or treatment as may be necessary and may pay the cost from the general fund or other proper fund or from moneys derived from the levy provided in Kan. Stat. Ann. § 12-3203 by the issuance of warrants as hereinafter provided.