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http://dx.doi.org/10.12791/KSBEC.2017.26.4.424

Optimum Nutrient Concentration to Improve Growth and Quality of Strawberry Cultivars 'Berrystar' and 'Jukhyang' in Hydroponics  

Choi, Su Hyun (Protected Horticulture Research Institute, NIHHS, RDA)
Choi, Gyeong Lee (Protected Horticulture Research Institute, NIHHS, RDA)
Jeong, Ho Jeong (Protected Horticulture Research Institute, NIHHS, RDA)
Kim, Seung Yu (Protected Horticulture Research Institute, NIHHS, RDA)
Lee, Seong Chan (Technology Services Division, NIHHS, RDA)
Choi, Hyo Gil (Department of Horticulture, Kongju National University)
Publication Information
Journal of Bio-Environment Control / v.26, no.4, 2017 , pp. 424-431 More about this Journal
Abstract
This study was conducted to set the optimum nutrient solution concentration by growth stage for new strawberry cultivars 'Berrystar' and 'Jukhyang'(Fragaria ${\times}$ ananassa Duch. cvs. 'Berrystar', 'Jukhyang') grown through hydroponics to improve the quality and yield. Three different EC levels were applied to the nutrient solution. The treatment levels were 0.7, 1.0 and 1.3 times higher than the nutrient concentration standard for 'Seolhyang' based on the 'Manual for strawberry cultivation' of Rural Development Administration. Based on the results, there were no significant differences in growth of 'Berrystar' by EC level. 'Jukhyang' showed the most vigorous growth grown in 1.3 times higher nutrient concentration. While the growth of 'Berrystar' and 'Jukhyang' grown in higher EC level has leaves with more chlorophyll concentration. However the quantum yield of leaves was not affected by the treatments. On the treatment with 1.3 times higher EC level, the weight, length, width and firmness of 'Berrystar' and 'Jukhyang' were significantly high. The sugar contents of the harvest analyzed by HPLC did not differed particularly, but the percentage composition of reducing sugar and non-reducing sugar were presented differently depending on the treatments. Marketable fruit yield increased as nutrient concentration increases. However, there were no large differences by treatments. Meanwhile, 'Jukhyang' showed significant difference by nutrient concentration and had the largest yield for a treatment grown in 1.3 times higher EC level. Based on these results, it is recommended to provide the same nutrient solution concentration level to the nutrient concentration standard of 'Seolhyang' for 'Berrystar', and the 1.3 times higher level for 'Jukhyang'.
Keywords
chlorophyll; HPLC; non-reducing sugar; quantum yield;
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