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http://dx.doi.org/10.12791/KSBEC.2017.26.1.7

Effect of Drainage Reusing Ratio on Growth and Yield of Summer-cultivated Paprika in Recycling Hydroponic Cultivation  

Jang, Dong-cheol (Department of Horticulture, Kangwon National University)
Choi, Ki-Young (Department of Controlled Agriculture, Kangwon National University)
Kim, II-Seop (Department of Horticulture, Kangwon National University)
Publication Information
Journal of Bio-Environment Control / v.26, no.1, 2017 , pp. 7-12 More about this Journal
Abstract
This experiment was conducted to analyze the effect of drainage reuse rate on the growth and fruiting of summer paprika in closed hydroponic cultivation. The experiment was carried out for 25 weeks from March to September 2015 with 0, 20, 30, 50% mixing ratio of waste nutrient solution using non - recycling hydroponic cultivation as a control. As a result, stem diameter of the test was different in the groups 1 and 2, but no difference showed as the group progressed more than 3 groups. L.A.I tended to decrease with increasing drainage mixing ratio. The number of nodes in the 50% reuse test group was 1.4 compared to the control group, but there was no significant difference. The number of harvested nodes was significantly different in the control group (11.1 nodes) and the 50% reuse test group (8.7 nodes), and the harvested nodes tended to decrease as the drainage was reused. The ratio of harvest was also the same as that of the harvesting node, and the control was the highest at 33.2% and the lowest at the 50% reuse test at 27.6%. Relative yields were reduced by 30%, 35% and 45% in the control group in the first group, and this tendency was also observed in the second and fourth groups. However, in the 3 and 5 groups, the production of 50% test group increased by 13% and 5%. The ratio of unmarketable fruit was increased 2%, 4%, 4%, and 7% in 0%, 20%, 30% and 50% reuse test, respectively. In conclusion, if the decrease in yield due to the decline in early growth is carefully managed, even if the imbalance of inorganic ions occurs after the mid-term growth, the growth of the crop will enter into a stable period and the re-use will not be worried about the growth and the yield decrease.
Keywords
capsicum annuum L.; closed-loop soilless culture; harvested fruit ratio; relative yield;
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Times Cited By KSCI : 2  (Citation Analysis)
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