Agroeeology is the application of ecology to agriculture and food systems (cf. Altieri, 1987; Gliessman, 1990).  It is increasingly recognized as the scientific discipline that best explains the environmental and often socio-cultural problems of the dominant food system, and the successes and and potentials of sustainable systems. Using tha agroecological paradigm, four essential system properties of agroecosystems have been determined: productivity (level of output); stability (constancy or persistence of output over time); sustainability (recovery from stress, disruptions); equitability (eveness of distribution among various groups) (Conway, 1985).  Agroecology combines knowledge from scientists and practitioners and can be applied at the level of the field, the farm, the region and the nation. More recently, it has been viewed as an international movement as well (cf. Wezel et al., 2009; Dale, 2019).