Each commodity committee is authorized to incur such expenses as the Secretary finds are reasonable and are likely to be incurred by the said commodity committee during each fiscal period for the maintenance and functioning of such committee, including its proportionate share of the expenses of the Control Committee; and for such research and service activities relating to handling of the fruit for which the commodity committee was established as the Secretary may determine to be appropriate. The funds to cover such expenses shall be acquired by the levying of assessments as provided in § 917.37.