<abstract xmlns="http://www.w3.org/1999/xhtml"><p>Analysis of leaf samples at intervals between late June and early August of 1979 and 1980 indicated lower mean concentrations of nitrogen and potassium, and higher mean concentrations of iron and manganese in grey than in non-grey (normal) tobacco. In grey tobacco, the concentrations of potassium and iron were present in deficient and toxic levels, respectively, in the majority of the samples throughout the whole sampling periods. Although symptoms on leaves resembled those of iron toxicity, changes in intensity of grey symptoms during sampling were associated with severity of potassium deficiency.</p></abstract>

Analysis of leaf samples at intervals between late June and early August of 1979 and 1980 indicated lower mean concentrations of nitrogen and potassium, and higher mean concentrations of iron and manganese in grey than in non-grey (normal) tobacco. In grey tobacco, the concentrations of potassium and iron were present in deficient and toxic levels, respectively, in the majority of the samples throughout the whole sampling periods. Although symptoms on leaves resembled those of iron toxicity, changes in intensity of grey symptoms during sampling were associated with severity of potassium deficiency.

Seasonal Nutrient Contents in Grey and Non-grey Flue-cured Tobacco

Research Branch, Agriculture Canada, L'Assomption, Quebec, Canada,

Department of Plant Science, McDonald College of McGill University, Ste. Anne de Bellevue, Quebec, Canada,

Engineering and Statistical Research Institute, Agriculture Canada, Ottawa, Ontario, Canada

Contributions to Tobacco & Nicotine Research

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

{"article-title":"Seasonal Nutrient Contents in Grey and Non-grey Flue-cured Tobacco"}

Analysis of leaf samples at intervals between late June and early August of 1979 and 1980 indicated lower mean concentrations of nitrogen and potassium, and...

Seasonal Nutrient Contents in Grey and Non-grey Flue-cured Tobacco

Publié en ligne: 06 janv. 2015

Pages: 265 - 269

Reçu: 03 sept. 1985

Accepté: 23 juil. 1986

DOI: https://doi.org/10.2478/cttr-2013-0576

© 1986 Beiträge zur Tabakforschung International

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.