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KMID : 0903619930340020091
Journal of the Korean Society for Horticultural Science
1993 Volume.34 No. 2 p.91 ~ p.98
Effect of Misting Intervals of Nutrient Solution on the Growth and Fruit Yield of Tomato





Abstract
An intermittent aeroponics system was designed and tested for potential use in plant growth and fruit yield studies. Tomato (Lycopersicon esculentum Mill)were grown in the system on a misting schedule of 60-sec, 30-sec and 10-sec at 10-min intervals with full strength of Yamazaki¢¥s solution recommended for tomato production.
1. Leaf area, dry weight of each organ, number of flowers, number of fruits set and fruit dry weight were greater in the 30-sec spray every 10-min among treatments.
2. Total dry weight and net assimilation rate(NAR) were closely related to the leaf area but slightly differed by the root environment as affected by the misting intervals of nutrient solution.
3. When specific leaf area(SLA) was high, NAR was lowered. However SLA and NAR could be altered by adjusting the misting interval of nutrient solution.
4. Root growth was strongly affected by the misting interval of nutrient solution so that shoot/root ratio was the lowest in the plot of 30-sec spray of nutrient solution every 10min.
5. Leaf dry weight and total dry weight were also closely related to the fruit dry weight but total dry weight and fruit dry weight showed the significant differences between misting intervals of nutrient solution.
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