Much of the recent literature on various aspects of pesticide1 residues associated with plants has been thoroughly and critically reviewed. Amongst the outstanding reviews are those on persistent pesticides by Robinson (1970); on pesticides in people by Wassermann et al. (1967); on dipyridylium herbicides by Akhavein and Linscott (1968); on translocation of fungicides by Wain and Carter (1967); on mercury compounds by Smart (1968) and by Caldwell (1971); on systemic pesticides in woody plants by Riley et al. (1965); on residues and the cuticula of leaves by Linskens et al. (1965); on molluscicides by Strufe (1968); and on forage crops by George et al. (1967a). Research literature on residues in food, feed, and fibre plants and in tobacco, is scanned here from 1964, continuing our earlier review (Finlayson and MacCarthy, 1965), and emphasising recent contributions. We have confined our study largely to work on accepted compounds used in commercial production of crops, but have perforce ignored much good work on weeds and ornamentals.