DISTRIBUTION OF DDT-¹⁴C IN NICOTIANA TABACUM

Abstract

Rose, Nr,sron eNo CnrNc, H. H, 1974. Distribution of DDT-uC inNicotiana tabacum. Can. J. Plant Sci. 54: 403-407. Tobacco, Nicotiana tabacum L., when grown in aerated nutrient solution, quartz sand or field soil, took up p,p'-DDT from the medium. The major portion of the total DDT in the plant was located in the root although the stem portions of the plant also accumulated the pesticide. The distribution of DDT varied within the shoot portion, with the largest concentration being in the lower leaves of the plant.When the DDT in the shoot was expressed in quantity (pg DDT per sample), the leaves of mid-stalk insertion contained the most DDT. (Schciniger 1955 ). The combusted contents were equilibrated for 30 min by shak-

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