A glasshouse experiment was carried and to measure the translocation of "C-malathion applied to cabbage plants. Cabbage seedlings were transplanted in plastic pots containing 1 kg of alluvial or sandy soil. After growth period of 2 months, the radioactive pesticide was applied to leaves or soils of the grown plants. Radioactivity was detected in stems and roots after 4 and 10 days, respectively, of foliar application; however, no "C-residues could be recovered in either of the used soil. On the other hand, "C-malathion was detected in cabbage roots after 2 days of soil application; it was then translocated up to stems after 6 and 4 days and to leaves after 10 and 6 days with respect to the alluvial and sandy soil-grown plants, respectively. KEYWORDS: Malathion, translocation, cabbage plants, radioactivity