1.    The director of the agricultural experiment station, with respect to all land to be irrigated by water from the Garrison diversion unit of the Pick-Sloan Missouri River basin project, shall promulgate rules and regulations for the determination of best management practices on the affected land. The rules and regulations may be amended from time to time. For the purposes of this section and section 61-24-21, “best management practices” means the application of water, fertilizers, pesticides, and herbicides in amounts that maximize crop production and economically efficient farming, while, at the same time, minimizing chemical or other pollution and degradation of ground or surface water supplies in areas irrigated with water from the Garrison diversion unit. Upon determining the best management practices for all land in question, the director of the agricultural experiment station shall file the information with the headquarters office of the district.

2.    The district in cooperation with other state agencies shall monitor the ground and surface water quality in all areas irrigated with water from the Garrison diversion unit, to determine compliance with the regulations concerning best management practices for farming of that land. If violations of best management practices are discovered, the district shall determine the location of all irrigators causing the violation and shall reduce the amount of water which may be distributed to the violating irrigator consistent with best management practices.