The acreage allotment established under the provisions of section
of this title for each farm for the 1964 crop may be supplemented by the Secretary by an acreage equal to such percentage, but not more than 10 per centum, of such acreage allotment as he determines will not increase the carryover of upland cotton at the beginning of the marketing year for the next succeeding crop above one million bales less than the carryover on the same date one year earlier, if the carryover on such earlier date exceeds eight million bales. For the 1965 crop, the Secretary may, after such hearing and investigation as he finds necessary, announce an export market acreage which he finds will not increase the carryover of upland cotton at the beginning of the marketing year for the next succeeding crop above one million bales less than the carryover on the same date one year earlier, if the carryover on such earlier date exceeds eight million bales. Such export market acreage shall be apportioned to the States on the basis of the State acreage allotments established under section
of this title and apportioned by the States to farms receiving allotments under section
of this title, pursuant to regulations issued by the Secretary, after considering applications for such acreage filed with the county committee of the county in which the farm is located. The “export market acreage” on any farm shall be the number of acres, not exceeding the maximum export market acreage for the farm established pursuant to this subsection, by which the acreage planted to cotton on the farm exceeds the farm acreage allotment. For purposes of sections
of this title and the provisions of any law requiring compliance with a farm acreage allotment as a condition of eligibility for price support or payments under any farm program, the farm acreage allotment for farms with export market acreage shall be the sum of the farm acreage allotment established under section
of this title and the maximum export market acreage. Export market acreage shall be in addition to the county, State, and National acreage allotments and shall not be taken into account in establishing future State, county, and farm acreage allotments. The provisions of this section shall not apply to extra-long-staple cotton or to any farm which receives price support under section
of this title.