; and (ii) 30 percent of annual grain crop acres, as in use on the date of enactment of this Act, to agroforestry, perennial grazing, perennial grain crops, or other perennial production systems by not later than December 31, 2040. (3) Farmland preservation (A) 2030 goal The rate of conversion of agricultural land to development, and the rate of conversion of grassland to cropping, should be reduced by at least 80 percent, as compared to those rates for calendar year 2023 by not later than December 31, 2030. (B) 2040 goal There should be no conversion of agricultural land to development, or grassland to cropping, by December 31, 2040. (4) Pasture-based livestock The livestock sector should— (A) establish advanced grazing management, including management-intensive rotational grazing, on at least— (i) 50 percent of all grazing land by not later than December 31, 2030; and (ii) 100 percent of all grazing land by not later than December 31, 2040; (B) (i) reduce greenhouse gas emissions related to feeding of ruminants by at least— (I) 1/3 by not later than December 31, 2030; and (II) 1/2 by not later than December 31, 2040; and (ii) accomplish the reductions described in clause (i) by— (I) reducing nongrazing feeding of ruminants; (II) growing feed grains and forages with soil health and nutrient management practices that minimize net greenhouse gas emissions from cropland; and (III) designing livestock feed mixtures and supplements to mitigate enteric methane emissions; (C) re-integrate livestock and crop production systems at farm, local, and regional levels to facilitate environmentally sound management and field application of manure and reduce the need for long-term manure storage by increasing acreage on individual farms under crop-livestock integrated management by at least— (i) 100 percent as compared to calendar year 2017 levels by not later than December 31, 2030; and (ii) 300 percent as compared to calendar year 2017 levels by not later than December 31, 2040