; by (II) the average number of acres of land enrolled in the conservation reserve nationally during each of fiscal years 2007 through 2016; and (ii) 30,000,000. . (c) Restrictions on land planted to trees Section 1231 of the Food Security Act of 1985 ( 16 U.S.C. 3831 ) is amended by adding at the end the following: (j) Restrictions on land planted to trees (1) Reduction of base acres In a case in which, as result of a contract under this subchapter, the base acres (as defined in section 1111 of the Agricultural Act of 2014 ( 7 U.S.C. 9011 )) on a farm that are enrolled in the conservation reserve is greater than the acres of available cropland on the farm, the Secretary shall permanently reduce the number of base acres of the farm by the number of acres that are planted to trees under the conservation plan described in section 1232(a)(1). (2) Renewal No contract under this subchapter may be renewed with respect to any acreage that is planted to trees under the conservation plan described in section 1232(a)(1). . (d) Haying and grazing Section 1233(b) of the Food Security Act of 1985 ( 16 U.S.C. 3833(b) ) is amended— (1) in paragraph (2)— (A) by redesignating subparagraphs (A) and (B) as clauses (i) and (ii), respectively, and indenting appropriately; (B) in the matter preceding clause (i) (as so designated), by striking in permitting those activities and inserting the following: “in permitting— (A) those activities ; (C) in subparagraph (A)(ii) (as so designated), by adding and at the end; and (D) by adding at the end the following: (B) those activities and the activities described in paragraph (4), not more than 1/3 of the acres covered by the contract may be harvested during any year; ; (2) in paragraph (3)(B), in the matter preceding clause (i), by striking grazing, the first place it appears and inserting grazing outside the normal grazing period described in paragraph (5), ; (3) by redesignating paragraphs (4) and (5) as paragraphs (6) and (7), respectively