This proceedings contains commissioned background papers used by conference work groups focusing on nine aspects of farmworker substance abuse, and the action plan developed by the work groups. The keynote address by Felipe G. Castro examines risk factors for substance abuse and addiction among Chicano farmworkers, particularly adolescent and young adult males; factors related to attitude change, behavior change, and relapse; family dynamics and related values among Mexican migrant workers; and acculturation differences among farmworkers. In the "Plan of Action for the Year 2000," the work groups identify problems in eight areas (research, continuity of care, funding and other resources, access to services, culturally appropriate models, coordination of services, leadership, and education and advocacy), and make recommendations in each area for policy formation and for meeting the needs of adults, adolescents, and mothers and babies. The commissioned papers are: (1) "Health Status and Contributing Factors for the Perinatal Life Cycle" (Anne Doolen and James A. Martin); (2) "Substance Abuse among Latino and Farmworker Adolescents" (Devon Davidson); (3) "Farmworker Substance Abuse Issues and Concerns for the Adult Life Cycle" (Tino De Anda); (4) "Farmworker Substance Abuse Prevention for the Perinatal Life Cycle" (Carol J. Dauenhauer Giese); (5) "Education, Advocacy, and Resource Development for the Farmworker Adolescent" (Nancy Vaughn); (6) "Education, Advocacy, and Resource Development for the Adult Migrant Farmworker" (David S. Anderson); (7) "Targeting the Pediatric Age Group for Prevention" (Phyllis J. Henderson); (8) "The Status of Evaluation and Research Efforts for the Adult Life Cycle" (Silvia Rodriguez Andrew); and (9) "Patterns of Rates of Mortality from Narcotics and Cocaine Overdose in Texas, 1976-87" (Kirk C. Harlow). (KS)