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KMID : 0903619960370050633
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Journal of the Korean Society for Horticultural Science
1996 Volume.37 No. 5 p.633 ~ p.637
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Effects of Salinity in Nutrient Solution after Transplantiong on the Growth and Fruit Quality of Aeroponically Grown Toamto
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Abstract
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This experiment was carried out to clarify the effects of salinity in nutrient solution after transplanting on the growth and fruit quality of aeroponically grown tomato. Salinity levels were adjusted to 2, 4 and 6 mS/㎝ by addition of NaCl into nutrient solutions. Growth characteristics and fruit quality were recorded and summarized as follows. Root growth were not influenced by salinity treatment in nutrient solution, but leaf fresh and dry weight decreased significantly at EC 6 mS·㎝^(-1) treatment. Plant height was highest in the plots of EC 2 mS·㎝^(-1) before pinching, but decreased with increasing the salinity level. After pinching leaf area and leaf fresh weight were higher in the EC 2-4 mS·㎝^(-1) of salinity level than other plots at 68 days after transplanting. As the salinity level in nutrient solution increased, soluble solids of tomato fruit was increased. Total fresh weight of fruit decreased as the salinity level increased. However, the optimum level of salinity without yield reduction was determined as 2 mS·㎝^(-1) treatment after transplanting into aeroponic systems. Fruit size, fruit fresh and dry weight were decreased as the concentration of NaCl was increased. As the salinity level in nutrient solution was increased, the occurrence of blossom end rot was increased but puffy fruit was decreased.
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