; and (B) for practices that relate to water quality or water quantity that result in benefits that primarily occur outside of the land on which the practices are implemented, offer increased incentives and higher cost-share rates to producers than are otherwise statutorily authorized through the conservation stewardship program and the environmental quality incentives program. (3) Reservation of funds and acres In each of fiscal years 2019 through 2023, the Secretary shall use not less than 10 percent of any funds or acres available with respect to the conservation stewardship program and the environmental quality incentives program, in carrying out this subsection, to target the most effective practices for improving the quality or quantity of source water. (4) Priority In carrying out this subsection, the Secretary shall give priority— (A) to practices determined by the Secretary, using the Conservation Practices Physical Effects matrix developed by the Secretary, to be the most effective; and (B) to practices implemented in local priority areas identified under paragraph (2)(A). .