; (B) the establishment of a reference price (as required under section 105(g)) and an effective price pursuant to section 105; and (C) the determination of the actual crop revenue and agriculture risk coverage guarantee pursuant to section 106. (21) Transitional yield The term transitional yield has the meaning given the term in section 502(b) of the Federal Crop Insurance Act ( 7 U.S.C. 1502(b) ). (22) United States The term United States , when used in a geographical sense, means all of the States. (23) United States premium factor The term United States Premium Factor means the percentage by which the difference in the United States loan schedule premiums for Strict Middling (SM) 1 1/8 -inch upland cotton and for Middling (M) 1 3/32 -inch upland cotton exceeds the difference in the applicable premiums for comparable international qualities. (24) Updated base acres The term updated base acres , with respect to a covered commodity on a farm, means the number of base acres updated by the Secretary under section 101. I Commodity Policy 101. Base acres (a) Mandatory one-Time update of base acres (1) In general As soon as practicable after the date of enactment of this Act, the Secretary shall update base acres on a farm for the 2019 crop year in accordance with this section. (2) Mandatory update For the purpose of applying this title to covered commodities, the Secretary shall determine the updated base acres on a farm by updating all of the base acres for covered commodities on the farm among those covered commodities planted on the farm at any time during the 2014 through 2017 crop years. (3) Update formula The updated base acres among covered commodities on a farm shall be the proportion that— (A) the 4-year average of— (i) the acreage planted on the farm to each covered commodity for harvest, grazing, haying, silage, or other similar purposes for the 2014 through 2017 crop years