There is hereby created a fertilizer research fund. All moneys credited to the fund shall be expended to the agricultural experiment station under the supervision of Kansas state university for the purpose of conducting research on fertilizers, anhydrous ammonia and related materials concerning efficient methods of application, storage and handling, their effect upon environmental quality, and efficiency and safety in the use of fertilizers, anhydrous ammonia and related materials in crop production. All expenditures shall be made in accordance with the appropriations acts upon warrants of the director of accounts and reports issued pursuant to vouchers approved by the director of the agricultural experiment station of Kansas state university or by a person or persons designated by the director.