Villareal R.LTsou S.C.SHSIAO-FENG LOChiu S.C.2022-12-142022-12-142018https://doi.org/10.1201/9781351077033https://www.scopus.com/inward/record.uri?eid=2-s2.0-85052191177&doi=10.1201%2f9781351077033&partnerID=40&md5=e386fb14b05e75b618bdda16f67c9ee5https://scholars.lib.ntu.edu.tw/handle/123456789/626163When the Philippines suffered serious flooding in 1972, only two green leafy vegetables could be regularly found in both urban and rural markets - sweet potato tips and water convolvulus or “Kangkong” (Ipomoea aquatica). All other vegetables were destroyed by about a month’s continuous rain. Tips in this context refer to that portion of the top used for human consumption. The term top is used to denote the entire aboveground part of the plant. © 1985 by CRC Press, Inc.book part2-s2.0-85052191177