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Published online 1 May 1970
Published in Agron J 62:415-417 (1970)
© 1970 American Society of Agronomy
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Plant Phenols in Flue-Cured Tobaccos Fertilized at Different Rates1

R. A. Andersen2, J. F. Chaplin3, R. E. Currin4 and Z. T. Ford5

Ten tobacco varieties were subjected during growth to three rates each of N, P and K fertilizer, flue-cured and analyzed for total soluble plant phenols. A small variation for total phenols occurred among varieties averaged over the three fertilizer rates (5.27–6.04%). There was a 15 and 22% relative decrease in phenols at the intermediate (89.6 kg/ha) and high (134.4 kg/ha) N rate, respectively, compared with the lowest rate of N application (44.8 kg/ha). Phosphorus also affected phenol levels in a similar manner, but to a lesser extent. A significant nitrogen with phosphorus interaction was obtained. Little variation was observed in phenols due to increase in potash.

Key Words: Polyphenols • Nitrogen • Potasium • Phosphorus • Potash

1 Cooperative investigations of the Crops Research Division, Agricultural Research Service, U. S. Department of Agriculture, the Kentucky Agricultural Experiment Station, Lexington, Ky. 40506, and the Department of Agronomy and Soils, Clemson University, Clemson, S.C. The investigation reported in this paper is in connection with a project of the Kentucky and South Carolina Experiment Stations and is published with the approval of Directors of Research as Paper No. 69-3-98 and No. 811 of the Journal Series of the Kentucky and South Carolina Agricultural Experiment Stations, respectively.

2 Research Chemist, Crops Research Division, ARS, USDA, and Assistant Professor, Department of Agronomy, University of Kentucky, Lexington, Ky. 40506.

3 Research Agronomist, Crops Research Division, ARS, USDA, Oxford, N.C. 27565.

4 Assistant Professor of Agronomy, Pee Dee Experiment Station, Florence, S.C. 29501.

5 Agricultural Research Technician, Crops Research Division, ARS, USDA, Pee Dee Experiment Station.

Received for publication November 15, 1969.




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Journal of Natural Resources
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Journal of Plant Registrations Journal of
Environmental Quality		 The Plant Genome
Copyright © 1970 by the American Society of Agronomy.