Tob. Sci., 1964, 8-17, p. 67-69, ISSN.0082-4623
Extent of tobacco root development as related to nicotine content of the plant parts
Duke University, Durham, North Carolina USA; Liggett and Myers Tobacco Company, Durham, No. Carolina USA
Amount of root development, as conditioned by depth of soil, influences the total nicotine content of the tobacco plant and the percentage nicotine content of each of the plant organs. Soil depth is only one among the several factors that are known...