Access

You are not currently logged in.

Access your personal account or get JSTOR access through your library or other institution:

login

Log in to your personal account or through your institution.

Effects of Humate, Agar-agar, and EDTA on the Development of Tomato Seedlings in Aerated and Non-aerated Water Cultures

S. GUMIŃSKI, Z. GUMIŃSKA and J. SULEJ
Journal of Experimental Botany
Vol. 16, No. 46 (January 1965), pp. 151-162
Published by: Oxford University Press
Stable URL: http://www.jstor.org/stable/23686775
Page Count: 14
  • Download ($42.00)
  • Cite this Item
Effects of Humate, Agar-agar, and EDTA on the Development of Tomato Seedlings in Aerated and Non-aerated Water Cultures
Preview not available

Abstract

The effect of sodium humate on the development of tomato seedlings in aerated and non-aerated water cultures has been compared with the effect of colloidal solutions of agar-agar. Similar comparisons have been made between the activities of humate and EDTA. The experiments have been conducted in fresh media as well as in nutrient solutions that had been formerly used for growing other tomato seedlings. Finally, a comparison between effects of humate and EDTA on tomato seedlings growing in nutrient solutions with various concentrations of calcium, magnesium, and iron salts in aerated and non-aerated water cultures has been carried out. Media used for growth experiments have been tested microbiologically, and qualitative analyses of their organic compounds have been made. A distinct relationship between physiological activities of humate, EDTA, and the concentrations of calcium, magnesium, and iron cations in the medium has been found. It has also been shown that in non-aerated media the plants mostly suffer the deficiency of available iron; this is prevented by the addition of either humate or EDTA.

Page Thumbnails

  • Thumbnail: Page 
[151]
    [151]
  • Thumbnail: Page 
152
    152
  • Thumbnail: Page 
153
    153
  • Thumbnail: Page 
154
    154
  • Thumbnail: Page 
155
    155
  • Thumbnail: Page 
156
    156
  • Thumbnail: Page 
157
    157
  • Thumbnail: Page 
158
    158
  • Thumbnail: Page 
159
    159
  • Thumbnail: Page 
160
    160
  • Thumbnail: Page 
161
    161
  • Thumbnail: Page 
162
    162
  • Thumbnail: Page 
[unnumbered]
    [unnumbered]
  • Thumbnail: Page 
[unnumbered]
    [unnumbered]