Plant and Soil

, Volume 48, Issue 2, pp 435–445 | Cite as

The distribution of potassium, calcium and magnesium in young tomato plants grown in water culture

  • P. D. Humphries
  • V. G. Devonald


Tomato seedlings, cv. Moneymaker were grown in water culture at a low [half] level of K, Ca of Mg as well as in a control in which the three nutrient elements were present at a higher [full] concentration. At weekly intervals, plants were harvested and partitioned. The dry weight and the K, Ca and Mg concentrations of each part were determined. In all treatments characteristic concentration gradients of each element were apparent within the plant, and in the case of K, leaf concentration changed with age. The possibility of internal re-distribution of nutrients seemed greatest in the case of K.

Comparison of nutrient concentration in equivalent leaves from high and low treatments suggests that choice of leaf is not critical in assessing Ca and Mg status, but that the lower leaves during their sixth and seventh weeks of development are most sensitive to K supply. re]19760917


Calcium Potassium Magnesium Plant Physiology Nutrient Concentration 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Martinus Nijhoff Publishers 1977

Authors and Affiliations

  • P. D. Humphries
    • 1
  • V. G. Devonald
    • 1
  1. 1.Science DepartmentBath College of Higher EducationNewton Park

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