; (B) producers in rural areas, as determined by the Secretary; and (C) socially disadvantaged farmers, as determined by the Secretary. (4) Study; report to Congress (A) Study Not later than 2 years after the date of enactment of this subsection, and every 2 years thereafter, the Secretary shall conduct a study regarding changes in soil health and soil organic carbon levels as a result of the practices used under this subsection. (B) Report to Congress Not later than 2 years after the date of enactment of this subsection, and every 2 years thereafter, the Secretary shall submit to Congress a report describing and analyzing the results of the study conducted under subparagraph (A). (C) Inclusion The report under subparagraph (B) shall include an analysis of— (i) the effect of various practices on soil organic carbon levels; (ii) the extent to which the lessons learned in carrying out this subsection can be transferred to other geographic regions; (iii) further data required to substantiate the connection between soil organic carbon levels and crop yield and resiliency, if applicable; (iv) the effect of multiple practices on soil organic carbon levels; (v) potential barriers to data collection across a variety of geographic regions