-DATE- 19870401 -YEAR- 1987 -DOCUMENT_TYPE- CONFERENCE -AUTHOR- F. CASTRO -HEADLINE- FIFTH UJC CONGRESS -PLACE- PALACE OF CONVENTIONS-HAVANA -SOURCE- HAVANA RADIO RELOJ NET. -REPORT_NBR- FBIS -REPORT_DATE- 19870403 -TEXT- Castro Participates FL012220 Havana Radio Reloj Network in Spanish 2032 GMT 1 Apr 87 [Text] Commander in Chief Fidel Castro is attending the second working session of the first day of the Fifth UJC Congress. Over 1,500 delegates continue to discuss very important matters, such as those regarding the work of young people in various areas of our economy. Over 500 guests also attended the opening session during which Fidel spoke on several occasions about the work stability of youth, its role in the sugar industry, and the introduction of scientific findings in the sugar harvest. Juan Herrera, sugar industry minister, and Rosa Elena Simeon, president of the Cuban Academy of Sciences, indicated that numerous delegates also discussed those subjects. -END-