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http://dx.doi.org/10.12791/KSBEC.2022.31.4.279

Comparison of Growth Characteristics of Strawberry according to Integrated Solar Radiation Control by Growth Stages  

Kim, So Hui (Protected Horticulture Research Institute, NIHHS, RDA)
Roh, Mi Young (Protected Horticulture Research Institute, NIHHS, RDA)
Choi, Gyeong Lee (Protected Horticulture Research Institute, NIHHS, RDA)
Lim, Mi Young (Protected Horticulture Research Institute, NIHHS, RDA)
Publication Information
Journal of Bio-Environment Control / v.31, no.4, 2022 , pp. 279-285 More about this Journal
Abstract
This study was carried out to establish proper irrigation standards by growth stages using integrated solar radiation (ISR) for strawberry hydroponics cultivation. The irrigation methods were automatically controlled when it reached ISR values based on the external solar irradiance. The ISR standards were set at 150 J·cm-2 and 200 J·cm-2, and as the last treatment, ISR value was changed from 200 J·cm-2 to 150 J·cm-2 according to growth stage. The timer-automated irrigation system was applied as a control. The monthly average irrigation frequency of 150 J·cm-2, growth stages (150 J·cm-2) treatment in March were 5.6 times, that of 200 J·cm-2, growth stages (200 J·cm-2) treatment in December were 2.7 times, and that of timer system was 3.6-3.8 times. The water use efficiency (WUE) of timer was 19.8 g·L-1 lower than ISR. There was no significant difference in growth and fruit characteristics between ISR and timer. The total yield and rate of marketable fruit of treatments by growth stages was the highest 328 g/10 a and 85.3 %, respectively. Therefore, in case of strawberry hydroponic cultivation, controlling ISR by growth stages was more helpful to improve yield rather than applying same ISR standard during cultivation.
Keywords
accumulated radiation; growth stages; irrigation control; water use efficiency;
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