AUTHOR=Asaduzzaman Md , Niu Genhua , Asao Toshiki TITLE=Editorial: Nutrients Recycling in Hydroponics: Opportunities and Challenges Toward Sustainable Crop Production Under Controlled Environment Agriculture JOURNAL=Frontiers in Plant Science VOLUME=13 YEAR=2022 URL=https://www.frontiersin.org/journals/plant-science/articles/10.3389/fpls.2022.845472 DOI=10.3389/fpls.2022.845472 ISSN=1664-462X