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Effect of Water Content in Substrates as According to Growth Stage on the Growth and Yield of Paprika in Summer Hydroponics  

Rhee, Han-Cheol (Protected Horticulture Experiment Station, NHRI, RDA)
Seo, Tae-Cheol (Protected Horticulture Experiment Station, NHRI, RDA)
Choi, Gyoeng-Lee (Protected Horticulture Experiment Station, NHRI, RDA)
Roh, Mi-Young (Protected Horticulture Experiment Station, NHRI, RDA)
Cho, Myeung-Whan (Protected Horticulture Experiment Station, NHRI, RDA)
Kim, Young-Cheol (Protected Horticulture Experiment Station, NHRI, RDA)
Publication Information
Journal of Bio-Environment Control / v.20, no.4, 2011 , pp. 258-262 More about this Journal
Abstract
This study was carried out to investigate the effect the water content in substrates as according to growth stage on the growth and yield of paprika in summer hydroponics. Treatments of I, II and III were composed of 55-65-60, 50-60-55 and 45-55-50 % in water contents of growth stages, respectively. Time domain reflectometry (TDR) sensors were used in a drip irrigation system. The early growth of paprika was increased by high medium water content of treatment I. Mean fruit weight was not affected by medium water content, but the fruit number per plant and yield were increased at high medium water content of treatment I. The yield of treatment I was higher than that of treatment II and III. The incidence of brown stem fruit, blossom end rot and sunburn was decreased with increasing water content of medium. Occurred in the low water content of medium. The nitrogen (N) was higher content in brown stem fruit than normal stem, but mineral contents such as potassium (K), calcium (Ca), magnesium (Mg) etc. were not affected.
Keywords
blossom end rot; brown stem fruit; growth stage; TDR;
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