; (2) rooftop farms, outdoor vertical production, and green walls; (3) indoor farms, greenhouses, and high-tech vertical technology farms; (4) hydroponic, aeroponic, and aquaponic farm facilities; and (5) other innovations in agricultural production, as determined by the Secretary. (b) Authorization of appropriations There is authorized to be appropriated to carry out this section $8,000,000 for the period of fiscal years 2019 through 2021. 8. Research, education, and extension initiative The Food, Agriculture, Conservation, and Trade Act of 1990 is amended by inserting after section 1672D ( 7 U.S.C. 5925f ) the following: 1672E. Urban, indoor, and other emerging agricultural production research, education, and extension initiative (a) Competitive research and extension grants authorized In consultation with the Urban Agriculture and Innovative Production Advisory Committee established under section 221(b) of the Department of Agriculture Reorganization Act of 1994, the Secretary may make competitive grants to support research, education, and extension activities for the purposes of enhancing urban, indoor, and other emerging agricultural production by— (1) facilitating the development of urban, indoor, and other emerging agricultural production, harvesting, transportation, aggregation, packaging, distribution, and markets; (2) assessing and developing strategies to remediate contaminated sites; (3) determining and developing the best production management and integrated pest management practices; (4) assessing the impacts of shipping and transportation on nutritional value; (5) identifying and promoting the horticultural, social, and economic factors that contribute to successful urban, indoor, and other emerging agricultural production; (6) analyzing the means by which new agricultural sites are determined, including an evaluation of soil quality, the condition of a building, or local community needs