Xavier Agricultural Extension Services (XAES) is an attached unit of the Xavier Science Foundation (XSF) of the College of Agriculture, Xavier University in Cagayan de Oro City.

It is tasked to provide agricultural extension services to poor small farmers and rural agricultural workers in the poor provinces of Mindanao.

XAES has been in existence since 1959 after the College of Agriculture was founded in 1953 by Fr. William F. Masterson, S.J. A decade later, Xavier Science Foundation was established as a holding institution of support projects and programs of other units of the College of Agriculture, including XAES. XAES derives its legal personality from the Xavier Science Foundation, Inc.

XAES has its humble beginnings in the provinces of Misamis Oriental and Bukidnon. It branched out to Ipil, Zamboanga del Sur in 1986. In 1992 and 1996 XAES’ ceased its operations in Misamis Oriental and Bukidnon respectively to focus on the province of Zamboanga del Sur and eventually the entire Region 9, now composed of the provinces of Basilan, Zamboanga City, Zamboanga del Sur, Zamboanga del Norte and Zamboanga Sibugay. The decision to place focus in Region 9 was based on the fact this is one of the regions in Mindanao that registered high incidence of poverty.

Within Region 9 are communities of the disadvantage indigenous Subanen peoples, Christian and Muslim marine fisherfolk, share tenants and upland settler-occupants.

Since 1986, the services of XAES has gradually expanded and touched base with poor farmers in more municipalities in the region. From a couple of extension workers in 1986, XAES has now employed 15 extension workers and community organizers to work in 18 municipalities in Zamboanga del Sur, Zamboanga del Norte and Zamboanga Sibugay provinces.

At present, XAES is implementing projects aimed at providing extension services and improving the quality of life of more than 1,000 rural households in the region.