; and (2) also on consideration of— (A) historical State enrollment rates; (B) the extent and magnitude in each State of the conservation needs and of the impact of agricultural production on water quality, water quantity, wetlands, and wildlife habitat; (C) the degree to which implementation of the conservation reserve program in each State is, or will be, effective in helping producers address such needs and mitigate such impact; and (D) equitable geographic distribution of acres, as determined by the Secretary. . 2106. Payments (a) Cost sharing payments Section 1234(b) of the Food Security Act of 1985 ( 16 U.S.C. 3834(b) ) is amended— (1) by amending paragraph (1) to read as follows: (1) In general In making cost sharing payments to an owner or operator under a contract entered into under this subchapter, the Secretary shall pay 50 percent of the cost of, as the Secretary determines appropriate and in the public interest— (A) establishing permanent vegetation, including site preparation, cover, fertilizer, seeding, and planting; (B) carrying out erosion control practices necessary to stabilize the site for vegetation established under subparagraph (A); (C) installing fencing to protect riparian areas and buffers; (D) carrying out water development practices associated with excluding livestock from protected riparian areas; (E) installing fencing and carrying out water development practices to facilitate transition to livestock grazing on lands enrolled under the grasslands enrollment option; (F) conducting the necessary and appropriate mid-contract management activities to maintain the permanent cover and associated benefits; and (G) carrying out other water quality conservation measures and practices. ; (2) in paragraph (2)— (A) in subparagraph (B)— (i) in the heading, by inserting or haying after grazing ; and (ii) by inserting for grazing livestock or harvesting hay before pursuant to ; and (B) in subparagraph (C), by inserting made by the Secretary before under this subchapter