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Effect of High Concentrations of Sodium or Chloride Salts in Soil on the Growth of and Mineral Uptake by Tomatoes  

강경희 (영남농업시험장 부산원예시험장)
권기범 (영남농업시험장 부산원예시험장)
최영하 (영남농업시험장 부산원예시험장)
김회태 (영남농업시험장 부산원예시험장)
이한철 (영남농업시험장 부산원예시험장)
Publication Information
Journal of Bio-Environment Control / v.11, no.3, 2002 , pp. 121-126 More about this Journal
Abstract
This study was conducted to investigate the effect of high concentration of sodium salts and chlorides in soil on the growth of tomato and the uptake of minerals. The growth inhibition rates of plant height and dry weight were different depending on salts, but they were not related to the electric conductivities (EC) and acidities (pH) in the soil solution. The orders of growth inhibition were Cl, SO$_4$, CO$_3$, PO$_4$＞NO$_3$ in the sodium salts series, and Na, K, Mg, NH$_4$＞Ca in the chlorides. The growth inhibition rates of the sodium salts series tended to be larger than those of the chloride series. Yield was lower 30%~10% in the sodium salt and chloride series than in the control. Chlorophyll content, photosynthetic rate and stomatal conductance were lower in the sodium salts and chloride series than in the control. Mineral concentration was lower in sodium salts and chlorides than in control. The nitrate absorption was inhibited in all salts except for NaNO$_3$ and NH$_4$Cl, and specially in NaCl and Na$_2$SO$_4$ treatments of the sodium salts and in KCl treatment of chloride series. K concentration was reduced NaCl and Na$_2$SO$_4$ treatments compared with the other salts. In the sodium salt series, calcium and magnesium concentration were decreased antagonistically when sodium concentration was increased.
Keywords
chlorophyll content; photosynthetic rate; stomatal conductance;
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