The county base acreage allotment for the 1971 crop shall be apportioned to old cotton farms in the county on the basis of the domestic acreage allotment established for the farm for the 1970 crop. For the 1972 and each subsequent crop of upland cotton the county base acreage allotment shall be apportioned to old cotton farms in the county on the basis of the farm base acreage allotment established for such farm for the preceding year. The county committee may reserve not in excess of 10 per centum of the county allotment which, in addition to the acreage made available under the proviso in subsection (c), shall be used for (A) establishing allotments for farms on which cotton was not planted (or regarded as planted) during any of the three calendar years immediately preceding the year for which the allotment is made, on the basis of land, labor, and equipment available for the production of cotton, crop-rotation practices, and the soil and other physical facilities affecting

the production of cotton; and (B) making adjustments of the farm allotments established under this paragraph so as to establish allotments which are fair and reasonable in relation to the factors set forth in this paragraph and abnormal conditions of production on such farms, or in making adjustments in farm allotments to correct inequities and to prevent hardships. No part of such reserve shall be apportioned to a farm to reflect new cropland brought into production after

If for any crop the total acreage of cotton planted on a farm is less than the farm base acreage allotment, the farm base acreage allotment used as a base for the succeeding crop shall be reduced by the percentage by which such planted acreage was less than such farm base acreage allotment, but such reduction shall not exceed 20 per centum of the farm base acreage allotment for the preceding crop. If not less than 90 per centum of the base acreage allotment for the farm is planted to cotton, the farm shall be considered to have an acreage planted to cotton equal to 100 per centum of such allotment. For purposes of this paragraph, an acreage on the farm which the Secretary determines was not planted to cotton because of drought, flood, other natural disaster, or a condition beyond the control of the producer shall be considered to be an acreage planted to cotton. For the purpose of this paragraph, the Secretary shall, in the event producers of wheat or feed grains are permitted to do so, permit producers of cotton to have acreage devoted to soybeans, wheat, feed grains, guar, castor beans, triticale, oats, rye or such other crops as the Secretary may deem appropriate considered as devoted to the production of cotton to such extent and subject to such terms and conditions as the Secretary determines will not impair the effective operation of the cotton or soybean program.

If no acreage is planted to cotton for any three consecutive crop years on any farm which had a farm base acreage allotment for such years, such farm shall lose its base acreage allotment.