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Effect of Water Content in Coir Substrates on the Growth and Yield of Mini-Paprika in Summer Hydroponics  

Rhee, Han 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)
Jeong, Jae Woan (Protected Horticulture Experiment Station, NHRI, RDA)
Cho, Myeung Hwan (Protected Horticulture Experiment Station, NHRI, RDA)
Kim, Young Cheol (Protected Horticulture Experiment Station, NHRI, RDA)
An, Chul Geun (Gyeongnam Agriculture Research & Extension Services)
Publication Information
Journal of Bio-Environment Control / v.21, no.3, 2012 , pp. 236-242 More about this Journal
Abstract
This study was carried out to investigate the effect the water content in coir substrates as according to growth stage on the growth and yield of mini-paprika of three varieties 'E 499524' (red color), 'E 499526' (yellow colar) and 'E 499531' (orange colar) 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 mini-paprika was increased by high medium water content of treatment I in all of three varieties. 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 in all of three varieties. The sugar content was increased by low medium water content of treatment in all of three varieties. 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. Mineral contents of fruits such as nitrogen (N), potassium (K), calcium (Ca), magnesium (Mg) etc. were not affected in all of three varieties.
Keywords
blossom-end rot; brown-stem fruit; growth stage; TDR;
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