Gerardo Offemaria Ocfemia, Philippine plant pathologist (Guinobatan, Albay 23 April 1891 – Pasay City 16 November 1959)
Studied the cause of bunchy-top of abaca or Manila hemp and its method of transmission (1930)
Designed insect-proof chambers (1931)
Proposed an insect as vector of the Fiji disease of sugar cane (1932)
Proposed that cadang-cadang disease of coconut is a virus disease (1937)