NATIONAL

•  Member. Philippine Society of soil Science and Technology. (PSSST). 1996 to present and PRO 1998-1999.
•  Member and Certifier. Organic Certification Center of the Philippines (OCCP). 2001 to present.
•  Member. Conservation Farming Movement, Inc. (CFMI). 1996 to present.
•  Member. Federation of Crop Science Society of the Philippines (FCSSP). 1994 to present.
•  Member. Philippine Association of Research Managers (PHILARM). 1998-1999.
•  Board of Director. Philippine Fruit Association ( PFA ). 1997-1999.
•  Member. PCARRD Scholars Associations, Inc. ( PSAI ). 1996-1999.
•  Regional Chairman. SAVI-Northern Luzon Chapter. 1994-1996.

INTERNATIONAL LEVEL

•  Fellow. Royal Institute of Agriculture . Singapore . 2005 to present.
•  Member. The International Society for Southeast Asian Agricultural Sciences (ISAAAS). 1997 to present.
•  Member. International Geographical Union (IGU). 1988 to present.
•  Member. Gamma Sigma Delta Honor Society of Agriculture. UPLB Chapter. 1988 to present.