This series consists of subject research files compiled by various Farm Advisors documenting agricultural trials, research findings, extension outreach, and professional engagement in a range of crop production areas. Materials include publications, newsletters, photographs, trial data, experimental reports, newspaper clippings, lecture notes, and administrative documentation. The series is divided into six subseries, each focusing on specific crop types.

This subseries consists of data, publications, articles, newspaper clippings, and trials related to fruit trees. Topics covered include figs, peaches, pears, avocados, apricot, chemical thinning, cherries, cracking, phenological data, persimmons, pomegranates, pesticides, insects, propagation, pruning, California planting, apples, hardwood cutting, rootstocks, fruit quality, dates, grafting, and fruit history.