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This article in AJ

  1. Vol. 62 No. 3, p. 415-417
     
    Received: Nov 15, 1969


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doi:10.2134/agronj1970.00021962006200030032x

Plant Phenols in Flue-Cured Tobaccos Fertilized at Different Rates1

  1. R. A. Andersen2,
  2. J. F. Chaplin3,
  3. R. E. Currin4 and
  4. Z. T. Ford5

Abstract

Abstract

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.

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