Plant diseases and their control by biological means in Cuba

Abstract

Beginning in 1989, the breakup of the Soviet Bloc disrupted trade and cut off Cuba's source of subsidized fuel oil, making many modern agricultural practices impossible, including the wide use of pesticides. Among Cuba's responses was an emphasis on biological control of plant diseases. Research into biological control began in the 1930s, and after the revolution many scientists maintained an unofficial interest. When the 1989 economic crisis occurred, the government placed a high priority on biocontrol, and researchers were in a position to begin immediate implementation. For example, the construction of factories for the mass production of biological agents had been approved in 1988, and are currently in operation. Disease monitoring was undertaken before the current crisis, with more than 90% of Cuban agriculture using it to some extent. Such monitoring has allowed a reduction in pesticide use. Since the 1989 onset of economic crisis the monitor system has not been greatly modified for use with biological control techniques, but an example of a successful transition from chemical treatment to biocontrol in Cuba is in banana plantations.